Archived Nasa Climate Change
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NASA Airborne Mission Measures Winds Using Lasers
Posted
May 13, 2019
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3:59Now PlayingResearchers from NASA's Langley Research Center flew onboard the agency’s DC-8 flying laboratory to test an improved version of Doppler Aerosol Wind Lidar (DAWN), an airborne instrument that uses pulsed lasers at varying scan angles 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. The team is also brought along another instrument called the High Altitude Lidar Observatory (HALO). HALO uses a combined Differential Absorption Lidar (DIAL) and High Spectral Resolution Lidar (HSRL) to profile atmospheric aerosols and water vapor. Together these instruments provide a better picture of wind measurements and advance technology that could help improve climate and weather predictions.
In additions to testing these new wind profiling instruments, researchers also sought to validate measurements from Atmospheric Dynamics Mission Aeolus (ADM Aeolus), a European Space Agency (ESA) satellite that also uses doppler lidar to measure wind profiles.
The mission took flight from the DC-8’s base of operations at NASA’s Armstrong Flight Research Center Building 703 in Palmdale, California.
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