Airborne lidar observations of wind, water vapor, and aerosol profiles during the NASA Aeolus calibration and validation (Cal/Val) test flight campaign

作者：Kristopher M. Bedka, Amin R. Nehrir, Michael J. Kavaya, Rory A. Barton‐Grimley, Mark Beaubien, Brian Carroll, J. E. Collins, John W. Cooney, G. D. Emmitt, Steven Greco, S. A. Kooi, Tsengdar Lee, Zhaoyan Liu, Sharon Rodier, Gail Skofronick‐Jackson · 发表于：Atmospheric measurement techniques · 年份：2021 · DOI：10.5194/amt-14-4305-2021 · 被引用次数：89 · 研究领域：Atmospheric aerosols and clouds、Atmospheric and Environmental Gas Dynamics、Atmospheric chemistry and aerosols

Abstract. Lidars are uniquely capable of collecting high-precision and high spatiotemporal resolution observations that have been used for atmospheric process studies from the ground, aircraft, and space for many years. The Aeolus mission, the first space-borne Doppler wind lidar, was developed by the European Space Agency (ESA) and launched in August 2018. Its novel Atmospheric LAser Doppler INstrument (ALADIN) observes profiles of the component of the wind vector and aerosol/cloud optical properties along the instrument's line-of-sight (LOS) direction on a global scale. A total of two airborne lidar systems have been developed at NASA Langley Research Center in recent years that collect measurements in support of several NASA Earth Science Division focus areas. The coherent Doppler Aerosol WiNd (DAWN) lidar measures vertical profiles of LOS velocity along selected azimuth angles that are combined to derive profiles of horizontal wind speed and direction. The High Altitude Lidar Observatory (HALO) measures high resolution profiles of atmospheric water vapor (WV) and aerosol and cloud optical properties. Because there are limitations in terms of spatial and vertical detail and measurement precision that can be accomplished from space, airborne remote sensing observations like those from DAWN and HALO are required to fill these observational gaps and to calibrate and validate space-borne measurements. Over a 2-week period in April 2019, during their Aeolus Cal/Val Test Flight ...