DOI: 10.1002/grl.50145
论文题名: Radiative heating characteristics of Earth's cloudy atmosphere from vertically resolved active sensors
作者: Haynes J.M. ; Vonder Haar T.H. ; L'Ecuyer T. ; Henderson D.
刊名: Geophysical Research Letters
ISSN: 0094-9327
EISSN: 1944-9058
出版年: 2013
卷: 40, 期: 3 起始页码: 624
结束页码: 630
语种: 英语
英文关键词: clouds
; radar
; radiative heating
; remove sensing
Scopus关键词: Boundary layers
; Clouds
; Heat radiation
; Optical radar
; Radar
; Radar measurement
; Radiant heating
; Sensors
; Vapors
; Aerosol information
; Hemi-spheric asymmetries
; High vertical resolution
; Northern Hemispheres
; Radiative heating
; remove sensing
; Southern Hemisphere
; Water vapor distribution
; Cooling
; CALIPSO
; CloudSat
; cooling
; heating
; lidar
; Northern Hemisphere
; radar
; radiative forcing
; remote sensing
; Southern Hemisphere
; spatiotemporal analysis
; water vapor
英文摘要: High vertical resolution CloudSat radar measurements, supplemented with cloud boundaries and aerosol information from the CALIPSO lidar, are used to examine radiative heating features in the atmosphere that have not previously been characterized by passive sensors. The monthly and annual mean radiative heating/cooling structure for a 4 year period between 2006 and 2010 is derived. The mean atmospheric radiative cooling rate from CloudSat/CALIPSO is 0.98 K d-1 (1.34 K d-1 between 150 and 950 hPa) and is largely a reflection of the Earth's mean water vapor distribution, with sharp vertical gradients introduced by clouds. It is found that there is a minimum in cooling in the tropical lower to middle troposphere, a cooling maximum in the upper-boundary layer of the Southern Hemisphere poleward of -10° latitude, and a minimum in cooling in the lower boundary layer in the middle to high latitudes of both hemispheres. Clouds tops tend to strongly cool the upper-boundary layer all year in the midlatitudes to high latitudes of the Southern Hemisphere (where peak seasonal mean winter cooling is 3.4 K d -1), but this cooling is largely absent in the corresponding parts of the Northern Hemisphere during boreal winter, resulting in a hemispheric asymmetry in cloud radiative cooling. Key Points Active sensors are used to derive vertically resolved heating rate structures Cooling is dominated by water vapor with sharp vertical gradients from clouds A hemispheric asymmetry in cooling rates is observed ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878207048&doi=10.1002%2fgrl.50145&partnerID=40&md5=36ad78096b11a9cfeca665d639d0f0b8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6591
Appears in Collections: 气候减缓与适应
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作者单位: Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO 80523, United States
Recommended Citation:
Haynes J.M.,Vonder Haar T.H.,L'Ecuyer T.,et al. Radiative heating characteristics of Earth's cloudy atmosphere from vertically resolved active sensors[J]. Geophysical Research Letters,2013-01-01,40(3).