DOI: 10.1002/2015JD023438
论文题名: Comparison of atmospheric profiles between microwave radiometer retrievals and radiosonde soundings
作者: Xu G. ; Xi B. ; Zhang W. ; Cui C. ; Dong X. ; Liu Y. ; Yan G.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2015
卷: 120, 期: 19 起始页码: 10313
结束页码: 10323
语种: 英语
英文关键词: clear sky
; cloudy sky
; infrared radiation thermometer
; microwave radiometer
; radiosonde
; wind speed
Scopus关键词: clear sky
; cloud classification
; cloud cover
; comparative study
; error correction
; infrared radiation
; microwave radiometer
; radiosonde
; regional climate
; relative humidity
; temperature profile
; wind velocity
; China
; Hubei
; Wuhan
英文摘要: Atmospheric profiles of temperature (T), vapor density (ρv), and relative humidity (RH) retrieved from ground-based microwave radiometer (MWR) measurements are compared with radiosonde soundings at Wuhan, China. The MWR retrievals were averaged in the ±30 min period centered at sounding times of 00 and 12 UTC. A total of 403 and 760 profiles under clear and cloudy skies were selected. Based on the comparisons, temperature profiles have better consistency than the ρv and RH profiles, lower levels are better than upper levels, and the cloudy are better than the clear-sky profiles. Three cloud types (low, middle, and high) were identified by matching the infrared radiation thermometer-detected cloud base temperature to the MWR-retrieved temperature-height profiles. Temperature profile under high cloud has the highest correlation coefficient (R) and the lowest bias and RMS, but under low cloud is in the opposite direction. The ρv profile under middle cloud has the highest R and the lowest bias but under high cloud has the lowest R, the largest bias, and RMS. Based on the radiosonde soundings, both clear and cloudy wind speeds and drifting distances increase with height but increase much faster under clear than cloudy above 4 km. The increased wind speeds and drifting distances with height have resulted in decreased correlation coefficient and increased temperature biases and RMSs with height for both clear and cloudy skies. The differences in R, bias, and RMS between clear and cloudy skies are primarily resulted from their wind speeds and drifting distances. ©2015. American Geophysical Union. All Rights Reserved. 资助项目: 41175016
; 41375041
; 41375057
; 41541037
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63008
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: Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan, China; Department of Atmospheric Sciences, University of North Dakota, Grand Forks, ND, United States; College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Hubei Meteorological Information and Technological Support Center, Wuhan, China; Wuhan Meteorological Bureau of Hubei Province, Wuhan, China
Recommended Citation:
Xu G.,Xi B.,Zhang W.,et al. Comparison of atmospheric profiles between microwave radiometer retrievals and radiosonde soundings[J]. Journal of Geophysical Research: Atmospheres,2015-01-01,120(19)