To verify the lidar data they're collecting on the DC-8 airborne science laboratory, Aeolus mission scientists will use dropsondes, which are devices they'll drop from this tube in the aircraft to collect wind and water vapor data.

NASA Langley Research Center's Kris Bedka, pictured here on the DC-8 flying laboratory, is the lead for an airborne mission called Aeoulus that is advancing laser-based technologies for measuring winds in the lower atmosphere.

The High Altitude Lidar Observatory (HALO) system electronics and diagnostic tools are integrated onto the DC-8 airborne science laboratory at NASA Armstrong Flight Research Center in Edwards, California. The lidar system control electronics are on the right hand side of the rack. The large monitors on the left are used to display real-time images of water vapor and aerosol profiles, which are used by the science team to guide in-flight decisions and navigation. The compact HALO instrument head can be seen directly behind the electronics rack.

Aerosol data from the High Altitude Lidar Observatory (HALO), pictured here, will give mission scientists a better sense how Doppler Aerosol Wind Lidar (DAWN) is working and what its strengths and weaknesses are.

The High Altitude Lidar Observatory (HALO) instrument head, which houses the lidar instrument, is installed onto the DC-8 airborne science laboratory at NASA Armstrong Flight Research Center in Edwards, California. The gold and blue casing holds the laser, optics, detectors, and electronics, which are at the heart of the lidar.

Researchers Anna Noe and Eric Altman check out the Doppler Aerosol Wind Lidar (DAWN), an airborne instrument that uses pulsed lasers to detect the movement of atmospheric aerosols such as dust or sea salt. In detecting those movements, it can profile wind vector — both speed and direction. Researchers are testing DAWNs capabilities during flights over the eastern Pacific.