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Multiangle Implementation of Atmospheric Correction (MAIAC): 2. Aerosol AlgorithmAn aerosol component of a new multiangle implementation of atmospheric correction (MAIAC) algorithm is presented. MAIAC is a generic algorithm developed for the Moderate Resolution Imaging Spectroradiometer (MODIS), which performs aerosol retrievals and atmospheric correction over both dark vegetated surfaces and bright deserts based on a time series analysis and image-based processing. The MAIAC look-up tables explicitly include surface bidirectional reflectance. The aerosol algorithm derives the spectral regression coefficient (SRC) relating surface bidirectional reflectance in the blue (0.47 micron) and shortwave infrared (2.1 micron) bands; this quantity is prescribed in the MODIS operational Dark Target algorithm based on a parameterized formula. The MAIAC aerosol products include aerosol optical thickness and a fine-mode fraction at resolution of 1 km. This high resolution, required in many applications such as air quality, brings new information about aerosol sources and, potentially, their strength. AERONET validation shows that the MAIAC and MOD04 algorithms have similar accuracy over dark and vegetated surfaces and that MAIAC generally improves accuracy over brighter surfaces due to the SRC retrieval and explicit bidirectional reflectance factor characterization, as demonstrated for several U.S. West Coast AERONET sites. Due to its generic nature and developed angular correction, MAIAC performs aerosol retrievals over bright deserts, as demonstrated for the Solar Village Aerosol Robotic Network (AERONET) site in Saudi Arabia.
Document ID
20120003889
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lyapustin, A. (Maryland Univ. Baltimore County Baltimore, MD, United States)
Wang, Y. (Maryland Univ. Baltimore County Baltimore, MD, United States)
Laszlo, I. (National Oceanic and Atmospheric Administration Camp Springs, MD, United States)
Kahn, R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Korkin, S. (Maryland Univ. Baltimore County Baltimore, MD, United States)
Remer, L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Levy, R. (Science Systems and Applications, Inc. Lanham, MD, United States)
Reid, J. S. (Naval Research Lab. Monterey, CA, United States)
Date Acquired
August 25, 2013
Publication Date
February 11, 2011
Publication Information
Publication: Journal of Geophysical Research
Volume: 116
ISSN: 0148-0227
Subject Category
Meteorology and Climatology
Report/Patent Number
GSFC.JA.5747.2011
Distribution Limits
Public
Copyright
Other