The depolarization - attenuated backscatter relation: CALIPSO lidar measurements vs. theory.
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.
Hu
Yongxiang
Y
Vaughan
Mark
M
Liu
Zhaoyan
Z
Lin
Bing
B
Yang
Ping
P
Flittner
David
D
Hunt
Bill
B
Kuehn
Ralph
R
Huang
Jiangping
J
Wu
Dong
D
Rodier
Sharon
S
Powell
Kathy
K
Trepte
Charles
C
Winker
David
D