DOI: 10.1002/jgrd.50718
论文题名: Multiple satellite observations of cloud cover in extratropical cyclones
作者: Naud C.M. ; Booth J.F. ; Posselt D.J. ; Van Den Heever S.C.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 17 起始页码: 9982
结束页码: 9996
语种: 英语
英文关键词: cloud fraction
; CloudSat-CALIPSO
; extratropical cyclones
; MISR
; MODIS
Scopus关键词: Clouds
; NASA
; Radiometers
; Satellite imagery
; Sea ice
; Cloud fraction
; CloudSat-CALIPSO
; Extratropical cyclones
; MISR
; MODIS
; Storms
; CALIPSO
; cloud cover
; cyclone
; fractionation
; MISR
; MODIS
; Northern Hemisphere
; numerical model
; satellite imagery
; sea ice
; seasonal variation
; Southern Hemisphere
英文摘要: Using cloud observations from NASA Moderate Resolution Imaging Spectroradiometer, Multiangle Imaging Spectroradiometer, and CloudSat-CALIPSO, composites of cloud fraction in southern and northern hemisphere extratropical cyclones are obtained for cold and warm seasons between 2006 and 2010, to assess differences between these three data sets, and between summer and winter cyclones. In both hemispheres and seasons, over the open ocean, the cyclone-centered cloud fraction composites agree within 5% across the three data sets, but behind the cold fronts, or over sea ice and land, the differences are much larger. To supplement the data set comparison and learn more about the cyclones, we also examine the differences in cloud fraction between cold and warm season for each data set. The difference in cloud fraction between cold and warm season southern hemisphere cyclones is small for all three data sets, but of the same order of magnitude as the differences between the data sets. The cold-warm season contrast in northern hemisphere cyclone cloud fractions is similar for all three data sets: in the warm sector, the cold season cloud fractions are lower close to the low, but larger on the equator edge than their warm season counterparts. This seasonal contrast in cloud fraction within the cyclones warm sector seems to be related to the seasonal differences in moisture flux within the cyclones. Our analysis suggests that the three different data sets can all be used confidently when studying the warm sector and warm frontal zone of extratropical cyclones but caution should be exerted when studying clouds in the cold sector. Key points Cyclone-centered cloud fraction composites from three data sets are comparedSeasonal contrast in cyclone cloudiness is more pronounced in NH than SHThe three data sets together better constrain models than individually ©2013. 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/63355
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: Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Naud C.M.,Booth J.F.,Posselt D.J.,et al. Multiple satellite observations of cloud cover in extratropical cyclones[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(17)