
The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) twin satellites, attached to turntable fixtures, at the Astrotech Space Operations processing facility at Vandenberg Air Force Base, California. GRACE-FO will extend GRACE's legacy of scientific achievements, which range from tracking mass changes of Earth's polar ice sheets and estimating global groundwater changes, to measuring the mass changes of large earthquakes and inferring changes in deep ocean currents, a driving force in climate. To date, GRACE observations have been used in more than 4,300 research publications. Its measurements provide a unique view of the Earth system and have far-reaching benefits to society, such as providing insights into where global groundwater resources may be shrinking or growing and where dry soils are contributing to drought. GRACE-FO is planned to fly at least five years. https://photojournal.jpl.nasa.gov/catalog/PIA22338

The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) twin satellites, attached to turntable fixtures, at the Astrotech Space Operations processing facility at Vandenberg Air Force Base, California. GRACE-FO will extend GRACE's legacy of scientific achievements, which range from tracking mass changes of Earth's polar ice sheets and estimating global groundwater changes, to measuring the mass changes of large earthquakes and inferring changes in deep ocean currents, a driving force in climate. To date, GRACE observations have been used in more than 4,300 research publications. Its measurements provide a unique view of the Earth system and have far-reaching benefits to society, such as providing insights into where global groundwater resources may be shrinking or growing and where dry soils are contributing to drought. GRACE-FO is planned to fly at least five years. https://photojournal.jpl.nasa.gov/catalog/PIA22340

One of the two Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) satellites and its turntable fixture at the Astrotech Space Operations processing facility at Vandenberg Air Force Base, California. GRACE-FO will extend GRACE's legacy of scientific achievements, which range from tracking mass changes of Earth's polar ice sheets and estimating global groundwater changes, to measuring the mass changes of large earthquakes and inferring changes in deep ocean currents, a driving force in climate. To date, GRACE observations have been used in more than 4,300 research publications. Its measurements provide a unique view of the Earth system and have far-reaching benefits to society, such as providing insights into where global groundwater resources may be shrinking or growing and where dry soils are contributing to drought. GRACE-FO is planned to fly at least five years. https://photojournal.jpl.nasa.gov/catalog/PIA22339

The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) twin satellites, attached to turntable fixtures, at the Astrotech Space Operations processing facility at Vandenberg Air Force Base, California. GRACE-FO will extend GRACE's legacy of scientific achievements, which range from tracking mass changes of Earth's polar ice sheets and estimating global groundwater changes, to measuring the mass changes of large earthquakes and inferring changes in deep ocean currents, a driving force in climate. To date, GRACE observations have been used in more than 4,300 research publications. Its measurements provide a unique view of the Earth system and have far-reaching benefits to society, such as providing insights into where global groundwater resources may be shrinking or growing and where dry soils are contributing to drought. GRACE-FO is planned to fly at least five years. https://photojournal.jpl.nasa.gov/catalog/PIA22341

The Gravity Recovery and Climate Experiment Follow-on (GRACE-FO) mission is a partnership between NASA and the German Research Centre for Geosciences (GFZ). GRACE-FO is a successor to the original GRACE mission, which began orbiting Earth on March 17, 2002. GRACE-FO will carry on the extremely successful work of its predecessor while testing a new technology designed to dramatically improve the already remarkable precision of its measurement system. The GRACE missions measure variations in gravity over Earth's surface, producing a new map of the gravity field every 30 days. Thus, GRACE shows how the planet's gravity differs not only from one location to another, but also from one period of time to another. Airbus Defence and Space (Friedrichshafen/Germany) is the industrial prime contractor to build the satellites.

This trio of images depicts satellite observations of declining water storage in California as seen by NASA Gravity Recovery and Climate Experiment satellites in June 2002 left, June 2008 center and June 2014 right.

Groundwater storage trends around the United States as measured by the NASA/German Aerospace Center Gravity Recovery and Climate Experiment GRACE satellites between 2003 and 2012.

The figure demonstrates of the capability of the SeaWinds instrument on NASA QuikScat satellite in monitoring both sea ice and ocean surface wind, thus helping to further our knowledge in wind-ice interaction and its effect on climate change.

After dominating the tropical Pacific Ocean for more than two years, the 1998-2000 La Niña cool pool is continuing its slow fade and seems to be retiring from the climate stage, according to satellite data from NASA U.S.-French TOPEX/Poseidon mission.

KENNEDY SPACE CENTER, FLA. - An Antonov aircraft arrives at Vandenberg Air Force Base in California carrying the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - At the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the newly arrived Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) is moved inside. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, CALIF. - The CALIPSO/CloudSat spacecraft is in a transport canister ready for the move to Space Launch Complex 2. There it will be lifted and mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the CALIPSO spacecraft waits to be weighed. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The two satellites will launch aboard a Boeing Delta II rocket no earlier than Oct. 1 from Space Launch Complex 2 at Vandenberg.

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the CALIPSO spacecraft is prepared for weighing. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The two satellites will launch aboard a Boeing Delta II rocket no earlier than Oct. 1 from Space Launch Complex 2 at Vandenberg.

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the CALIPSO spacecraft is weighed. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The two satellites will launch aboard a Boeing Delta II rocket no earlier than Oct. 1 from Space Launch Complex 2 at Vandenberg.

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers prepare the CALIPSO spacecraft for weighing. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The two satellites will launch aboard a Boeing Delta II rocket no earlier than Oct. 1 from Space Launch Complex 2 at Vandenberg.

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the CALIPSO spacecraft is prepared for weighing. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The two satellites will launch aboard a Boeing Delta II rocket no earlier than Oct. 1 from Space Launch Complex 2 at Vandenberg.

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers prepare the CALIPSO spacecraft for weighing. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The two satellites will launch aboard a Boeing Delta II rocket no earlier than Oct. 1 from Space Launch Complex 2 at Vandenberg.

VANDENBERG AIR FORCE BASE, Calif. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the transport canister is lowered toward the covered dual spacecraft CALIPSO and CloudSat below. Once inside the canister, the spacecraft will be moved to Space Launch Complex 2. There the spacecraft will be lifted and mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers hold the Wide Field Camera that they will install on the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft at right. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, Calif. - This is the mission patch for the CALIPSO/CloudSat mission showing the dual spacecraft. It hangs on the wall inside the Astrotech Payload Processing Facility at Vandenberg Air Force Base in California, where the CALIPSO/CloudSat spacecraft is being readied for launch. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. Launch of CALIPSO/CloudSat is scheduled for April 21.

VANDENBERG AIR FORCE BASE, Calif. - On Space Launch Complex 2 at Vandenberg Air Force Base in California, the dual spacecraft CALIPSO and CloudSat, covered by a transport canister, is lifted up into the mobile service tower. There the spacecraft will be mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. Launch of CALIPSO/CloudSat is scheduled for April 21.

KENNEDY SPACE CENTER, FLA. -Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers prepare to attach equipment that will enable the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft to be raised to a vertical position and moved to a workstand. It will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, Calif. - On Space Launch Complex 2 at Vandenberg Air Force Base in California, the dual spacecraft CALIPSO and CloudSat, removed from its transport canister, is being mated in the mobile service tower with the second stage of its Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. Launch of CALIPSO/CloudSat is scheduled for April 21.

VANDENBERG AIR FORCE BASE, Calif. - On Space Launch Complex 2 at Vandenberg Air Force Base in California, a crane is attached to the dual spacecraft CALIPSO and CloudSat, covered by a transport canister. The spacecraft will be lifted and mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. Launch of CALIPSO/CloudSat is scheduled for April 21.

VANDENBERG AIR FORCE BASE, Calif. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the transport canister is lowered over the covered dual spacecraft CALIPSO and CloudSat below. Once inside the canister, the spacecraft will be moved to Space Launch Complex 2. There the spacecraft will be lifted and mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

VANDENBERG AIR FORCE BASE, Calif. - On Space Launch Complex 2 at Vandenberg Air Force Base in California, the dual spacecraft CALIPSO and CloudSat, covered by a transport canister, is lifted up into the mobile service tower. There the spacecraft will be mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. Launch of CALIPSO/CloudSat is scheduled for April 21.

VANDENBERG AIR FORCE BASE, Calif. - On Vandenberg Air Force Base in California, the dual spacecraft CALIPSO and CloudSat, covered by a transport canister, moves toward the mobile service tower on Space Launch Complex 2. There the spacecraft will be lifted and mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. Launch of CALIPSO/CloudSat is scheduled for April 21.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the cover of the shipping container is lifted away from the newly arrived Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO). CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers prepare a Wide Field Camera for installation on the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

An artist concept of the Ocean Surface Topography Mission/Jason 2 Earth satellite. The Ocean Surface Topography Mission/Jason 2 is an Earth satellite designed to make observations of ocean topography for investigations into sea-level rise and the relationship between ocean circulation and climate change. The satellite also provides data on the forces behind such large-scale climate phenomena as El Niño and La Niña. The mission is a follow-on to the French-American Jason 1 mission, which began collecting data on sea-surface levels in 1992. http://photojournal.jpl.nasa.gov/catalog/PIA18158

VANDENBERG AIR FORCE BASE, Calif. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, a worker secures the transport canister around the dual spacecraft CALIPSO and CloudSat. The spacecraft will be moved to Space Launch Complex 2. There the spacecraft will be lifted and mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

VANDENBERG AIR FORCE BASE, Calif. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, a crane lifts the transport canister covering the dual spacecraft CALIPSO and CloudSat. The spacecraft is being moved to Space Launch Complex 2. There the spacecraft will be lifted and mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

VANDENBERG AIR FORCE BASE, Calif. - On Space Launch Complex 2 at Vandenberg Air Force Base in California, the dual spacecraft CALIPSO and CloudSat, covered by a transport canister, is lifted up into the mobile service tower. There the spacecraft will be mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. Launch of CALIPSO/CloudSat is scheduled for April 21.

KENNEDY SPACE CENTER, FLA. -- Technicians position NASA's CloudSat spacecraft onto a Delta payload attach fitting in a clean room at Vandenberg Air Force Base, Calif. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites and will be launched together. They will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, CALIF. - With the transport canister removed, NASA's CALIPSO/CloudSat spacecraft are mated to the Boeing Delta II second stage in the mobile service tower on Space Launch Complex 2. Launch of the dual spacecraft is scheduled for April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

KENNEDY SPACE CENTER, FLA. -Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers prepare the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft to be lifted and transferred to a workstand. CALIPSO will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - At Vandenberg Air Force Base in California, the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft is offloaded from the Antonov aircraft that delivered it. It will be transported to the VAFB Astrotech Payload Processing Facility. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, an overhead crane moves close to the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft. The crane will lift CALIPSO and move it to a workstand. CALIPSO will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft waits to be transferred from a tilt dolly to a workstand. It will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, CALIF. - One of four Solid Rocket Boosters for the CALIPSO_CloudSat launch is ready for lifting into the mobile service tower, or gantry, where it will be attached to the Boeing Delta II rocket. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites and together will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. Sept. 29.

A Pegasus rocket starts it's first stage burn to propel the SORCE Satellite payload into low-Earth orbit, January 25, 2003, off the coast of Cape Canaveral, FL, The SORCE satellite, Solar Radiation and Climate Experiment,is a joint project with Orbital, NASA and the University of Colorado. The satellite is an atmospheric instrument that will measure incoming radiant energy from the sun. Scientists will use this to address long term atmospheric and climate changes. Other uses will be for ozone research and ultraviolet radiation. (Photo by Eric Roback and Rob Rivers, NASA Langley Research Center)

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, an overhead crane is attached to the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft. CALIPSO will be lifted and transferred to a workstand. CALIPSO will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft is secure on a workstand. CALIPSO will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) is prepared to be transferred from a tilt dolly to a workstand. It will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, Calif. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers secure the transport canister around the dual spacecraft CALIPSO and CloudSat. The spacecraft will be moved to Space Launch Complex 2. There the spacecraft will be lifted and mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers surround the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft as it is lowered toward a workstand. CALIPSO will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers make adjustments on the tilt dolly before attempting to raise the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft to vertical. CALIPSO will be moved to a workstand. It will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, Calif. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the transport canister covers the dual spacecraft CALIPSO and CloudSat. The spacecraft will be moved to Space Launch Complex 2. There the spacecraft will be lifted and mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft is attached to a tilt dolly. When raised to a vertical position, CALIPSO will be moved to a workstand. It will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers remove a piece of equipment used to help attach the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft to a tilt dolly. CALIPSO will be moved to a workstand. It will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers surround the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft as it is lowered toward a workstand. CALIPSO will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, Calif. - On Space Launch Complex 2 at Vandenberg Air Force Base in California, the dual spacecraft CALIPSO and CloudSat, covered by a transport canister, is ready for lifting up into the mobile service tower. There the spacecraft will be mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. Launch of CALIPSO/CloudSat is scheduled for April 21.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers make adjustments on the tilt dolly before attempting to raise the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft to vertical. CALIPSO will be moved to a workstand. It will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft has been raised to vertical. It will be lifted and transferred to a workstand. CALIPSO will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - At Vandenberg Air Force Base in California, the ground support equipment (GSE) is offloaded from the Antonov aircraft. The GSE will be used for processing the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft to get it ready for launch. CALIPSO was offloaded earlier. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers secure the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft onto a workstand. CALIPSO will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. -- Technicians secure NASA's CloudSat spacecraft to a Delta payload attach fitting in a clean room at Vandenberg Air Force Base, Calif. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites and will be launched together. They will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

KENNEDY SPACE CENTER, FLA. - At Vandenberg Air Force Base in California, the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft is offloaded from the Antonov aircraft that delivered it. It will be transported to the VAFB Astrotech Payload Processing Facility. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. - At Vandenberg Air Force Base in California, the newly arrived Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft leaves the airstrip for transport to the VAFB Astrotech Payload Processing Facility. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, Calif. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers secure the transport canister around the dual spacecraft CALIPSO and CloudSat. The spacecraft will be moved to Space Launch Complex 2. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers prepare to raise the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft to vertical. CALIPSO will be moved to a workstand. It will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, CALIF. - NASA's CALIPSO/CloudSat spacecraft are lifted at Space Launch Complex 2 at Vandenberg Air Force Base in preparation for integration with the Boeing Delta II launch vehicle. Launch of the dual spacecraft is scheduled for April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

VANDENBERG AIR FORCE BASE, Calif. - On Space Launch Complex 2 at Vandenberg Air Force Base in California, the dual spacecraft CALIPSO and CloudSat, removed from its transport canister, is being mated with the second stage of its Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. Launch of CALIPSO/CloudSat is scheduled for April 21.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, a worker installs the Wide Field Camera on the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, Calif. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the transport canister is prepared for lifting. It will be placed over the covered dual spacecraft, CALIPSO and CloudSat, for the move to Space Launch Complex 2. There the spacecraft will be lifted and mated with a Boeing Delta II rocket for launch on April 21. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. It will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft waits on a workstand for installation of a Wide Field Camera, on the floor at left. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

KENNEDY SPACE CENTER, FLA. -- Technicians prepare to move NASA's CloudSat spacecraft for mating to a Delta payload attach fitting in a clean room at Vandenberg Air Force Base, Calif. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites and will be launched together. They will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

KENNEDY SPACE CENTER, FLA. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers prepare to attach equipment that will enable the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) spacecraft to be raised to a vertical position and moved to a workstand. It will undergo state-of-health checks, and electrical ground-support equipment testing. CALIPSO will fly in combination with the CloudSat satellite to provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will join three other satellites in orbit to enhance understanding of climate systems. The launch date for CALIPSO_CloudSat is no earlier than Aug. 22.

VANDENBERG AIR FORCE BASE, Calif. – After arrival of the cargo plane, the shipping container holding the OSTM/Jason-2 satellite is offloaded at Vandenberg Air Force Base. The satellite will be taken to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Steve Greenberg, JPL

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the upper Delta Payload Attach Fitting (UDPAF) is lowered toward the lower Delta Payload Attach Fitting (LDPAF). The LDPAF holds the CloudSat satellite and the UDPAF will hold the CALIPSO satellite. The two sections will be mated. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, Calif. -- Workers prepare to move the shipping container holding the OSTM/Jason-2 satellite onto a flatbed truck at Vandenberg Air Force Base. The satellite will be transported to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Dan Liberotti

VANDENBERG AIR FORCE BASE, Calif. – The OSTM/Jason-2 satellite is transported from the airstrip at Vandenberg Air Force Base. The satellite will be taken to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Steve Greenberg, JPL

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the upper Delta Payload Attach Fitting (UDPAF) has been mated with the lower Delta Payload Attach Fitting (LDPAF). The LDPAF holds the CloudSat satellite and the UDPAF will hold the CALIPSO satellite. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the CALIPSO spacecraft is being fitted with a crane to lift and move the satellite for mating with the Lower Delta Payload Attach Fitting (LDPAF), which contains the CloudSat satellite. The PAF is the interface between the spacecraft and the second stage of the rocket. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, a worker helps secure the upper Delta Payload Attach Fitting (UDPAF) to the lower Delta Payload Attach Fitting (LDPAF). The LDPAF holds the CloudSat satellite and the UDPAF will hold the CALIPSO satellite. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, Calif. – Ground support equipment associated with the OSTM/Jason-2 satellite is offloaded from the cargo plane at Vandenberg Air Force Base. The equipment will accompany the satellite to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Steve Greenberg, JPL

VANDENBERG AIR FORCE BASE, Calif. – Workers adjust the shipping container holding the OSTM/Jason-2 satellite after its placement on the flatbed truck at Vandenberg Air Force Base. The satellite will be transported to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Steve Greenberg, JPL

VANDENBERG AIR FORCE BASE, Calif. – Workers check the shipping container holding the OSTM/Jason-2 satellite after its placement on the flatbed truck at Vandenberg Air Force Base. The satellite will be transported to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Steve Greenberg, JPL

VANDENBERG AIR FORCE BASE, Calif. -- Workers move the shipping container holding the OSTM/Jason-2 satellite on a flatbed truck at Vandenberg Air Force Base. The satellite will be transported to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Dan Liberotti

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the upper Delta Payload Attach Fitting (UDPAF) is lowered toward the lower Delta Payload Attach Fitting (LDPAF). The LDPAF holds the CloudSat satellite and the UDPAF will hold the CALIPSO satellite. The two sections will be mated. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the upper Delta Payload Attach Fitting (UDPAF) is lowered toward the lower Delta Payload Attach Fitting (LDPAF) at right. The UDPAF will hold the CALIPSO satellite and the LDPAF holds the CloudSat satellite. The two sections will be mated. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, Calif. – A photographer (left) captures the moment after the shipping container holding the OSTM/Jason-2 satellite has been offloaded from the cargo plane at Vandenberg Air Force Base. The satellite will be taken to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Steve Greenberg, JPL

VANDENBERG AIR FORCE BASE, Calif. – After being offloaded from the cargo plane, the shipping container holding the OSTM/Jason-2 satellite is moved away from the plane. The satellite will be taken to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Steve Greenberg, JPL

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the upper Delta Payload Attach Fitting (UDPAF) at left is fitted with a crane to lift it and mate it with the lower Delta Payload Attach Fitting (LDPAF) at right. The UDPAF will hold the CALIPSO satellite and the LDPAF holds the CloudSat satellite. The two sections will be mated. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, Calif. – Ground support equipment associated with the OSTM/Jason-2 satellite is placed on a flatbed truck at Vandenberg Air Force Base. The equipment will accompany the satellite to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Steve Greenberg, JPL

VANDENBERG AIR FORCE BASE, Calif. – Workers prepare to move the shipping container holding the OSTM/Jason-2 satellite onto a flatbed truck at Vandenberg Air Force Base. The satellite will be transported to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Steve Greenberg, JPL

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the CALIPSO spacecraft is lowered toward the Lower Delta Payload Attach Fitting (LDPAF). CALIPSO will be mated with the LDPAF, which contains the CloudSat satellite. The PAF is the interface between the spacecraft and the second stage of the rocket. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, Calif. -- At Vandenberg Air Force Base, the truck carrying the OSTM/Jason-2 satellite arrives at the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Dan Liberotti

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers help guide the CALIPSO spacecraft as it is lowered onto a payload attach fitting. CALIPSO will be mated to the Lower Delta Payload Attach Fitting (LDPAF) that contains the CloudSat satellite. The PAF is the interface between the spacecraft and the second stage of the rocket. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, Calif. -- At Vandenberg Air Force Base, workers remove the straps holding the OSTM/Jason-2 satellite shipping container on the flatbed truck. The container will be moved inside the Astrotech processing facility at right. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Dan Liberotti

VANDENBERG AIR FORCE BASE, Calif. -- In front of the Astrotech processing facility at Vandenberg Air Force Base, a forklift begins to lift the OSTM/Jason-2 satellite shipping container off the flatbed truck. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Dan Liberotti

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the CALIPSO spacecraft is lifted for its move to the Lower Delta Payload Attach Fitting (LDPAF). CALIPSO will be mated with the LDPAF, which contains the CloudSat satellite. The PAF is the interface between the spacecraft and the second stage of the rocket. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, CALIF. — Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, workers help secure the CALIPSO spacecraft to the upper Delta Payload Attach Fitting (UDPAF). Later the UDPAF will be mated with the lower Delta Payload Attach Fitting, which contains the CloudSat satellite. The PAF is the interface between the spacecraft and the second stage of the rocket. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the CALIPSO spacecraft is lowered closer to the Lower Delta Payload Attach Fitting (LDPAF). CALIPSO will be mated with the LDPAF, which contains the CloudSat satellite. The PAF is the interface between the spacecraft and the second stage of the rocket. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, Calif. -- At Vandenberg Air Force Base, the truck carrying the OSTM/Jason-2 satellite is ready to transport the cargo to the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Dan Liberotti

VANDENBERG AIR FORCE BASE, CALIF. - Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, the CALIPSO spacecraft is moved toward the Lower Delta Payload Attach Fitting (LDPAF). CALIPSO will be mated with the LDPAF, which contains the CloudSat satellite. The PAF is the interface between the spacecraft and the second stage of the rocket. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, Calif. -- In front of the Astrotech processing facility at Vandenberg Air Force Base, a forklift has removed the OSTM/Jason-2 satellite shipping container off the flatbed truck. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Dan Liberotti

VANDENBERG AIR FORCE BASE, CALIF. — Inside the Astrotech Payload Processing Facility on Vandenberg Air Force Base in California, an overhead crane moves the CALIPSO spacecraft toward the upper Delta Payload Attach Fitting (UDPAF). Later the UDPAF will be mated with the lower Delta Payload Attach Fitting, which contains the CloudSat satellite. The PAF is the interface between the spacecraft and the second stage of the rocket. CALIPSO stands for Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation. CALIPSO and CloudSat are highly complementary satellites that will provide never-before-seen 3-D perspectives of how clouds and aerosols form, evolve, and affect weather and climate. CALIPSO and CloudSat will fly in formation with three other satellites in the A-train constellation to enhance understanding of our climate system. Launch of CALIPSO_CloudSat aboard a Boeing Delta II rocket is scheduled for 3:01 a.m. PDT Sept. 29.

VANDENBERG AIR FORCE BASE, Calif. -- At Vandenberg Air Force Base, the OSTM/Jason-2 satellite shipping container is being moved inside the Astrotech processing facility. The OSTM, or Ocean Topography Mission, on the Jason-2 satellite is a follow-on to Jason-1. It will take oceanographic studies of sea surface height into an operational mode for continued climate forecasting research and science and industrial applications. This satellite altimetry data will help determine ocean circulation, climate change and sea-level rise. OSTM is a joint effort by the National Oceanic and Atmospheric Administration, NASA, France’s Centre National d’Etudes Spatiales and the European Meteorological Satellite Organisation. OSTM/Jason-2 will be launched aboard a United Launch Alliance Delta II 7320 from Vandenberg on June 15. Photo credit: NASA/Dan Liberotti