TY - JOUR
T1 - Sea surface wind speed estimation from space-based lidar measurements
AU - Hu, Y.
AU - Stamnes, K.
AU - Vaughan, M.
AU - Pelon, J.
AU - Weimer, C.
AU - Wu, D.
AU - Cisewski, M.
AU - Sun, W.
AU - Yang, P.
AU - Lin, B.
AU - Omar, A.
AU - Flittner, D.
AU - Hostetler, C.
AU - Trepte, C.
AU - Winker, D.
AU - Gibson, G.
AU - Santa-Maria, M.
PY - 2008/6/30
Y1 - 2008/6/30
N2 - Global satellite observations of lidar backscatter measurements acquired by the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) mission and collocated sea surface wind speed data from the Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E), are used to investigate the relation between wind driven wave slope variance and sea surface wind speed. The new slope variance - wind speed relation established from this study is similar to the linear relation from Cox-Munk (1954) and the log-linear relation from Wu (1990) for wind speed larger than 7 m/s and 13.3 m/s, respectively. For wind speed less than 7 m/s, the slope variance is proportional to the square root of the wind speed, assuming a two dimensional isotropic Gaussian wave slope distribution. This slope variance - wind speed relation becomes linear if a one dimensional Gaussian wave slope distribution and linear slope variance - wind speed relation are assumed. Contributions from whitecaps and subsurface backscattering are effectively removed by using 532 nm lidar depolarization measurements. This new slope variance - wind speed relation is used to derive sea surface wind speed from CALIPSO single shot lidar measurements (70 m spot size), after correcting for atmospheric attenuation. The CALIPSO wind speed result agrees with the collocated AMSR-E wind speed, with 1.2 m/s rms error. Ocean surface with lowest atmospheric loading and moderate wind speed (7-9 m/s) is used as target for lidar calibration correction.
AB - Global satellite observations of lidar backscatter measurements acquired by the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) mission and collocated sea surface wind speed data from the Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E), are used to investigate the relation between wind driven wave slope variance and sea surface wind speed. The new slope variance - wind speed relation established from this study is similar to the linear relation from Cox-Munk (1954) and the log-linear relation from Wu (1990) for wind speed larger than 7 m/s and 13.3 m/s, respectively. For wind speed less than 7 m/s, the slope variance is proportional to the square root of the wind speed, assuming a two dimensional isotropic Gaussian wave slope distribution. This slope variance - wind speed relation becomes linear if a one dimensional Gaussian wave slope distribution and linear slope variance - wind speed relation are assumed. Contributions from whitecaps and subsurface backscattering are effectively removed by using 532 nm lidar depolarization measurements. This new slope variance - wind speed relation is used to derive sea surface wind speed from CALIPSO single shot lidar measurements (70 m spot size), after correcting for atmospheric attenuation. The CALIPSO wind speed result agrees with the collocated AMSR-E wind speed, with 1.2 m/s rms error. Ocean surface with lowest atmospheric loading and moderate wind speed (7-9 m/s) is used as target for lidar calibration correction.
UR - https://www.scopus.com/pages/publications/47149083712
UR - https://www.scopus.com/pages/publications/47149083712#tab=citedBy
U2 - 10.5194/acp-8-3593-2008
DO - 10.5194/acp-8-3593-2008
M3 - Article
AN - SCOPUS:47149083712
SN - 1680-7316
VL - 8
SP - 3593
EP - 3601
JO - Atmospheric Chemistry and Physics
JF - Atmospheric Chemistry and Physics
IS - 13
ER -