DOI: 10.1002/jgrd.50207
论文题名: Trends in ISCCP, MISR, and MODIS cloud-top-height and optical-depth histograms
作者: Marchand R.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 4 起始页码: 1941
结束页码: 1949
语种: 英语
英文关键词: cloud optical depth
; cloud-top height
; trend analysis
Scopus关键词: Graphic methods
; Spectrometers
; Statistical methods
; Cloud optical depth
; cloud-top height
; International satellite cloud climatology projects
; Moderate resolution imaging spectrometers
; Optical thickness
; Spectro-radiometers
; Total cloud cover
; Trend analysis
; Radiometers
; cloud cover
; geographical distribution
; histogram
; MISR
; MODIS
; optical depth
; spatial analysis
; trend analysis
英文摘要: In this article, temporal changes in the Multiangle Imaging Spectro Radiometer (MISR) and Moderate Resolution Imaging Spectrometer (MODIS) joint histograms of cloud-top height (CTH) and optical depth (OD) over the period 2001 to 2011 are examined. The analysis shows no significant trend in total cloud cover averaged over all oceans between 60°N and 60°S from 2001 to 2011. There are, however, significant trends in the amount of some CTH-OD histogram components or cloud types. In particular, there was an increase in the amount of cloud with intermediate optical thickness (23 > OD > 3.6) and a decrease in the amount of the most optically thick cloud (OD > 23) over this period. The total cloud amount shows no trend because the increase in the amount of intermediate optically thick clouds is nearly balanced by the decrease in the amount of the most optically thick clouds. This balance is not due to a simple shift toward optically thinner clouds in all regions but has a complex spatial pattern both regionally and vertically. An examination of the geographic distribution of the change shows that the decrease in the amount of the most optically thick cloud occurred primarily in the extratropics. International Satellite Cloud Climatology Project (ISCCP) observations are briefly compared with those from MODIS and MISR. The comparison shows that ISCCP-retrieved total-cloud fraction is reasonably robust, but changes in the ISCCP component cloud fractions sometimes show large deviations from those of MISR and MODIS. Key PointsAn increase in cloud with OD < 23 but a decrease with OD > 23, 2001 to 2011Total cloud amount shows no global trend because these two trends nearly balanceISCCP total CF compares well with MISR and MODIS but component CFs don't © 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/63914
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 Atmospheric Sciences, University of Washington, 408 ATG Building, Seattle, WA 98195-1640, United States
Recommended Citation:
Marchand R.. Trends in ISCCP, MISR, and MODIS cloud-top-height and optical-depth histograms[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(4)