DOI: 10.1002/jgrd.50311
论文题名: Investigating enhanced Aqua MODIS aerosol optical depth retrievals over the mid-to-high latitude Southern Oceans through intercomparison with co-located CALIOP, MAN, and AERONET data sets
作者: Toth T.D. ; Zhang J. ; Campbell J.R. ; Reid J.S. ; Shi Y. ; Johnson R.S. ; Smirnov A. ; Vaughan M.A. ; Winker D.M.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 10 起始页码: 4700
结束页码: 4714
语种: 英语
英文关键词: aerosol
; CALIPSO
; MAN
; MODIS
; satellite
; sea salt
Scopus关键词: Aerosols
; Atmospheric aerosols
; Clouds
; Contamination
; Radiometers
; Satellites
; Aerosol robotic networks
; CALIPSO
; Cloud-aerosol lidar with orthogonal polarizations
; Ground-based observations
; MAN
; Moderate resolution imaging spectroradiometer
; MODIS
; Sea salts
; Satellite imagery
; aerosol
; cloud
; data set
; latitude
; lidar
; MODIS
; optical depth
; sea salt
; stratocumulus
; Southern Ocean
英文摘要: A band of enhanced aerosol optical depth (AOD) over the mid-to-high latitude Southern Oceans exists in some passive satellite-based aerosol data sets, including Moderate Resolution Imaging Spectroradiometer (MODIS) products. Past studies suggest several potential causes contributing to this phenomenon, including signal uncertainty, retrieval bias, and cloud contamination. In this paper, quality-assured Aqua MODIS aerosol products in this zonal band are investigated to assess cloud contamination as a cause. Spatially and temporally collocated cloud and aerosol products produced by the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) project relative to Aqua MODIS AOD in this region are considered. Maritime Aerosol Network (MAN) and Aerosol Robotic Network (AERONET) AOD data are also collocated with Aqua MODIS retrievals for surface context. The results of this study indicate that the high Aqua MODIS AOD are not seen in the CALIOP aerosol products, cannot be screened using active profiling of collocated observations for cloud presence, and are not detected by ground-based observations such as MAN and AERONET. Enhanced AOD values are attributable primarily to stratocumulus and low broken cumulus cloud contamination, as identified with CALIOP products. But these clouds explain only about 30-40% of the total anomaly. Cirrus cloud contamination is also a factor. However, in contrast to the rest of the globe, they contribute less overall, relative to low-level liquid water clouds, which are considered likely the result of misidentification of relatively warm cloud tops compared with surrounding open seas. Key Points A band of enhanced AOD over Southern Oceans (ESOA) is observed by some sensorsESOA is not evident from ground-based and CALIOP dataCALIOP analysis suggests cloud contamination is not only factor in ESOA ©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/63744
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 North Dakota, 4149 University Avenue Stop 9006, Grand Forks, ND 58202, United States; Aerosol and Radiation Sciences Section Marine Meteorology Division, Naval Research Laboratory, Monterey CA, United States; Sigma Space Corporation, Greenbelt MD, United States; NASA Langley Research Center, Hampton VA, United States
Recommended Citation:
Toth T.D.,Zhang J.,Campbell J.R.,et al. Investigating enhanced Aqua MODIS aerosol optical depth retrievals over the mid-to-high latitude Southern Oceans through intercomparison with co-located CALIOP, MAN, and AERONET data sets[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(10)