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Climatology of the Aerosol Optical Depth by Components from the Multi-Angle Imaging Spectroradiometer (MISR) and Chemistry Transport ModelsThe Multi-angle Imaging Spectroradiometer (MISR) Joint Aerosol (JOINT_AS) Level 3 product has provided a global, descriptive summary of MISR Level 2 aerosol optical depth (AOD) and aerosol type information for each month over 16+ years since March 2000. Using Version 1 of JOINT_AS, which is based on the operational (Version 22) MISR Level 2 aerosol product, this study analyzes, for the first time, characteristics of observed and simulated distributions of AOD for three broad classes of aerosols: spherical nonabsorbing, spherical absorbing, and nonspherical - near or downwind of their major source regions. The statistical moments (means, standard deviations, and skew-nesses) and distributions of AOD by components derived from the JOINT_AS are compared with results from two chemistry transport models (CTMs), the Goddard Chemistry Aerosol Radiation and Transport (GOCART) and SPectral RadIatioN-TrAnSport (SPRINTARS). Overall, the AOD distributions retrieved from MISR and modeled by GOCART and SPRINTARS agree with each other in a qualitative sense. Marginal distributions of AOD for each aerosol type in both MISR and models show considerable high positive skewness, which indicates the importance of including extreme AOD events when comparing satellite retrievals with models. The MISR JOINT_AS product will greatly facilitate comparisons between satellite observations and model simulations of aerosols by type.
Document ID
20170003718
Document Type
Reprint (Version printed in journal)
Authors
Lee, Huikyo (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kalashnikova, Olga V. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Suzuki, Kentaroh (Tokyo Univ. Kashiwa, Japan)
Braverman, Amy (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Garay, Michael J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kahn, Ralph A. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
April 20, 2017
Publication Date
June 1, 2016
Publication Information
Publication: Atmospheric Chemistry and Physics
Volume: 16
Issue: 10
ISSN: 1680-7316
Subject Category
Meteorology and Climatology
Earth Resources and Remote Sensing
Report/Patent Number
GSFC-E-DAA-TN41831
Distribution Limits
Public
Copyright
Other
Keywords
SPRINTARS
MISR
aerosol optical depth