The depolarization - attenuated backscatter relation: CALIPSO lidar measurements vs. theory.
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Using measurements obtained by the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite, relationships between layer-integrated depolarization ratio (delta) and layer-integrated attenuated backscatter (gamma) are established for moderately thick clouds of both ice and water. A new and simple form of the delta-gamma relation for spherical particles, developed from Monte Carlo simulations and suitable for both water clouds and spherical aerosol particles, is found to agree well with the observations. A high-backscatter, low-depolarization delta-gamma relationship observed for some ice clouds is shown to result primarily from horizontally oriented plates and implies a preferential lidar ratio - depolarization ratio relation in nature for ice cloud particles containing plates.
author list (cited authors)
Hu, Y., Vaughan, M., Liu, Z., Lin, B., Yang, P., Flittner, D., ... Winker, D.
complete list of authors
Hu, Yongxiang||Vaughan, Mark||Liu, Zhaoyan||Lin, Bing||Yang, Ping||Flittner, David||Hunt, Bill||Kuehn, Ralph||Huang, Jiangping||Wu, Dong||Rodier, Sharon||Powell, Kathy||Trepte, Charles||Winker, David