globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2016JD024867
Title:
Geostationary satellite-based 6.7 μm band best water vapor information layer analysis over the Tibetan Plateau
Author: Di D.; Ai Y.; Li J.; Shi W.; Lu N.
Source Publication: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
Publishing Year: 2016
Volume: 121, Issue:9
pages begin: 4600
pages end: 4613
Language: 英语
Keyword: best water vapor information layer ; Jacobian function ; the Tibetan Plateau ; water vapor absorption band
Scopus Keyword: absorption ; air temperature ; altitude ; atmospheric modeling ; data processing ; diurnal variation ; equation ; FengYun ; geostationary satellite ; layer ; remote sensing ; terrain ; water vapor ; China ; Qinghai-Xizang Plateau
English Abstract: The best water vapor information layer (BWIL) of the 6.7 μm water vapor absorption infrared (IR) band for the FengYun-2E is investigated over the Tibetan Plateau with standard atmospheric profile and European Centre for Medium-Range Weather Forecasts (ECMWF) operational model analysis data. The sensitivity tests show that surface characteristics over the Tibetan Plateau have a significant influence on the BWIL. To be specific, topographic elevation, colder skin temperature, and lower emissivity tend to lift the altitude of the BWIL, decrease its magnitude, and narrow the half-width range. The results from statistical analysis indicate that the altitude of the BWIL reaches the highest in summer and the lowest in winter. Meanwhile, the altitude of the BWIL is highly correlated with the water vapor amount above 500 hPa over the Tibetan Plateau and above 300 hPa over the East China Plain, respectively. The diurnal variation in the BWIL is synchronous with the diurnal variation in the surface skin temperature. It can be concluded from the study that surface characteristics over high terrain in dry and cold atmospheres have more significant impacts on the BWIL. With multiple water vapor absorption IR bands, the imagers on board the new generation of geostationary satellites will provide crucial improvement in water vapor remote sensing over the current single water vapor band on board the FY-2 series according to the analysis in this study. © 2016. American Geophysical Union. All Rights Reserved.
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Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/62887
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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Affiliation: Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, China; Cooperative Institute for Meteorological Satellite Study, University of Wisconsin-Madison, Madison, WI, United States; Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, Peking University, Beijing, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; National Satellite Meteorological Center, China Meteorological Administration, Beijing, China

Recommended Citation:
Di D.,Ai Y.,Li J.,et al. Geostationary satellite-based 6.7 μm band best water vapor information layer analysis over the Tibetan Plateau[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(9)
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