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Evaluation of the Multi-Angle Implementation of Atmospheric Correction (MAIAC) Aerosol Algorithm through Intercomparison with VIIRS Aerosol Products and AERONETThe Multi-Angle Implementation of Atmospheric Correction (MAIAC) algorithm is under evaluation for use in conjunction with the Geostationary Coastal and Air Pollution Events (GEO-CAPE) mission. Column aerosol optical thickness (AOT) data from MAIAC are compared against corresponding data. from the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument over North America during 2013. Product coverage and retrieval strategy, along with regional variations in AOT through comparison of both matched and un-matched seasonally gridded data are reviewed. MAIAC shows extended coverage over parts of the continent when compared to VIIRS, owing to its pixel selection process and ability to retrieve aerosol information over brighter surfaces. To estimate data accuracy, both products are compared with AERONET Level 2 measurements to determine the amount of error present and discover if there is any dependency on viewing geometry and/or surface characteristics. Results suggest that MAIAC performs well over this region with a relatively small bias of -0.01; however there is a tendency for greater negative biases over bright surfaces and at larger scattering angles. Additional analysis over an expanded area and longer time period are likely needed to determine a comprehensive assessment of the products capability over the Western Hemisphere. and meet the levels of accuracy needed for aerosol monitoring.
Document ID
20180001540
Document Type
Accepted Manuscript (Version with final changes)
External Source(s)
Authors
Superczynski, Stephen D. (NOAA/NESDIS/STAR, College Park, MD)
Kondragunta, Shobha (NOAA/NESDIS/STAR, College Park, MD)
Lyapustin, Alexei I. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
February 28, 2018
Publication Date
January 29, 2017
Publication Information
Publication: Journal of Geophysical Research: Atmospheres
Volume: 122
Issue: 5
ISSN: 2169-897X
Subject Category
Geophysics
Report/Patent Number
GSFC-E-DAA-TN39705
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
MAIAC
aerosol optical thickness
Suomi-NPP VIIRS

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