DOI: 10.1029/2017JD027849
Scopus记录号: 2-s2.0-85047632113
论文题名: Intercomparison Between VIIRS and CrIS by Taking Into Account the CrIS Subpixel Cloudiness and Viewing Geometry
作者: Gong X. ; Li Z. ; Li J. ; Moeller C.C. ; Cao C. ; Wang W. ; Menzel W.P.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 10 起始页码: 5335
结束页码: 5345
语种: 英语
英文关键词: CrIS
; intercomparison
; local zenith angle
; SDR
; subpixel cloudiness
; VIIRS
英文摘要: The Cross-track Infrared Sounder (CrIS) onboard the Suomi National Polar-orbiting Partnership (SNPP) has high radiometric accuracy, which can be used to intercompare and understand the radiometric performance of the thermal emissive bands of the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the same platform. Previous studies usually selected uniform scenes to avoid potential uncertainties due to geolocation errors. This study focuses on all scenes (including nonuniform scenes), as well as CrIS subpixel cloudiness, local zenith angle and surface type, and their impacts on VIIRS/CrIS intercomparisons. A geolocation error correction scheme is applied to mitigate the geolocation mismatch between CrIS and VIIRS. Intercomparison results of three days from 19 to 21 September 2016, a quarterly warm up/cool down calibration period, show overall good agreement in terms of radiance biases (less than 0.2 K in terms of brightness temperature) between VIIRS and CrIS, for scene temperatures between 220 and 300 K; however, larger biases are evident outside of this range. The three factors—CrIS subpixel cloudiness, local zenith angle, and surface type—show weak impacts on VIIRS radiance biases. Both clear-sky and overcast conditions have slightly different radiance biases from other partially cloudy conditions because of more contributions from colder or warmer scenes. The time series show the impact of warm up/cool down and the effectiveness of the correction algorithm for reprocessing VIIRS M15 and M16 data sets. The methods and tools can be applied to monitor and validate other infrared imager/sounder duos onboard the same platform. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113885
Appears in Collections: 气候减缓与适应
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作者单位: College of Earth and Planetary Sciences Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin-Madison, Madison, WI, United States; University of Chinese Academy of Sciences, Beijing, China; Center for Satellite Applications and Research, NOAA, College Park, MD, United States; Earth Resource Technology, Inc., Laurel, MD, United States
Recommended Citation:
Gong X.,Li Z.,Li J.,et al. Intercomparison Between VIIRS and CrIS by Taking Into Account the CrIS Subpixel Cloudiness and Viewing Geometry[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(10)