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The Impact of Surface Albedo on the Retrievals of Low-Level Stratus Cloud Properties: An Updated ParameterizationAn updated version of Dong et al. (1998, hereafter D98) parameterization is developed from a total of 40 hours of data with a broad range of surface albedos (0.1-0.8) during the 2000-2002 winter seasons at the DOE ARM SGP site. The updated parameterization includes the impact of surface albedo on the retrievals of stratus cloud microphysical and radiative properties, and has a significant improvement over D98 when surface albedo is high. Comparing the retrievals, the cloud-droplet effective radii (r(sub e)) calculated from the updated parameterization have a higher correlation coefficient (0.733) and lower Root-Mean-Square (RMS) error (1.74 m or 17.4%) than those (0.602, 4.0 m or 40%) from the D98. The cloud albedos also have a much higher correlation coefficient (0.983) and lower RMS (3%) than those 0.465, 26%) from the D98. The upper limit of surface albedo is 0.3 in applying the D98.
Document ID
20090011853
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Dong, Xiquan
(North Dakota Univ. Grand Forks, ND, United States)
Date Acquired
August 24, 2013
Publication Date
May 18, 2005
Publication Information
Publication: Geophysical Research Letters
Publisher: American Geophysical Union
Volume: 32
Issue: 10
Subject Category
Meteorology And Climatology
Funding Number(s)
CONTRACT_GRANT: NNL04AA11G
Distribution Limits
Public
Copyright
Other

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