DOI: 10.1002/jgrd.50681
论文题名: Evaluation of single field-of-view cloud top height retrievals from hyperspectral infrared sounder radiances with CloudSat and CALIPSO measurements
作者: Yao Z. ; Li J. ; Weisz E. ; Heidinger A. ; Liu C.-Y.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 16 起始页码: 9182
结束页码: 9190
语种: 英语
Scopus关键词: Acoustic devices
; Algorithms
; Clouds
; Infrared devices
; Optical radar
; Atmospheric infrared sounders
; Cloud optical thickness
; Cloud profiling radar
; Cloud top height retrieval
; Cloud-aerosol lidar and infrared pathfinder satellite observations
; Earth observing systems
; Regression algorithms
; Variational algorithms
; Infrared instruments
; algorithm
; CALIPSO
; cloud
; CloudSat
; lidar
; measurement method
; one-dimensional modeling
; spectral analysis
英文摘要: Accurate cloud top height retrievals from hyperspectral infrared (IR) sounder radiances are needed for weather and climate prediction. To account for the nonlinearity of the cloud parameters with respect to the IR radiances, a one-dimensional variational retrieval algorithm is used to derive the cloud top heights (CTHs) from the Atmospheric Infrared Sounder (AIRS) radiances on a single field-of-view basis. The CTHs are evaluated by comparison with the measurements from radar and lidar instruments onboard the Earth Observing System (EOS) CloudSat and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellites. Using the retrievals from a global 3 day dataset, it is found that the variational algorithm compared with the regression algorithm could reduce the variability of the difference between the AIRS and active measurements by 1 km. And the biases of AIRS CTHs range from +1.5 to -1.4 km and from +1.6 to -3.8 km, depending on the Cloud Profiling Radar (CPR) and CALIPSO CTHs between 3 and 18 km, respectively. Globally, the AIRS CTH is overestimated (underestimated) when the CTH from active measurements is below (above) 5 km. The bias decreases from -1.9 to -0.8 km, and the variability decreases from 2.8 to about 1.6 km with the increase of the CALIPSO cloud optical thickness from 0.1 to 2.5. It also reveals that the AIRS CTHs agree better with the CPR than the CALIPSO. © 2013. Her Majesty the Queen in Right of Canada. American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63412
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin-Madison, 1225 West Dayton St, Madison, WI 53706, United States; Center for Satellite Applications and Research, NESDIS/NOAA, Madison, WI, United States; Central University, Taiwan
Recommended Citation:
Yao Z.,Li J.,Weisz E.,et al. Evaluation of single field-of-view cloud top height retrievals from hyperspectral infrared sounder radiances with CloudSat and CALIPSO measurements[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(16)