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Proceedings Paper

Characterization of aerosol parameters over ocean from the Ocean Color satellite sensors and AERONET-OC data
Author(s): Alex Gilerson; Eder Herrera; Yaron Klein; Robert Foster; Barry Gross; Robert Arnone; Sam Ahmed
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Paper Abstract

Data quality of the satellite sensors for ocean monitoring (Ocean Color –OC) like MODIS, VIIRS, MERIS, and now OLCI sensor on Sentinel-3a are often validated through matchups between normalized water leaving radiances nLw (or remote sensing reflectance Rrs) from satellite data and data from radiometric systems (SeaPRISMs) installed on ocean platforms and which are part of the NASA Aerosol Robotic Network (AERONET) and AERONET-OC networks. While matchups are usually good in open ocean waters, significant discrepancies are observed in coastal areas which are primarily due to the more complex atmospheres near the coast and therefore less accurate atmospheric correction. Satellite-derived water leaving radiances are determined by applying atmospheric correction procedures which include assumptions about the characteristics of atmospheric aerosols. At sea level, SeaPRISM makes direct measurements of nLw from the ocean, as well as observations of sky from which aerosol parameters such as aerosol optical thickness, single scattering albedo, fraction of fine and coarse aerosols, and others are determined. Using NASA SeaDAS software for OC satellite data processing, characteristics of aerosols in atmospheric correction models for VIIRS sensor are explicitly retrieved and compared with the ones from AERONET-OC data, primarily in terms of aerosol optical depth (AOD), thus characterizing the validity of the aerosol models and evaluating possible errors and reasons for discrepancies. Comparisons are presented for the coastal site at CCNY’s Long Island Sound Coastal Observatory (LISCO) and a less coastal WaveCIS Gulf of Mexico’ AERONET-OC site with variable water and atmospheric conditions.

Paper Details

Date Published: 3 October 2017
PDF: 12 pages
Proc. SPIE 10422, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2017, 104220H (3 October 2017);
Show Author Affiliations
Alex Gilerson, The City College of New York (United States)
Eder Herrera, The City College of New York (United States)
Yaron Klein, The City College of New York (United States)
Robert Foster, The City College of New York (United States)
U. S. Naval Research Lab. (United States)
Barry Gross, The City College of New York (United States)
Robert Arnone, Univ. of Southern Mississippi (United States)
Sam Ahmed, The City College of New York (United States)

Published in SPIE Proceedings Vol. 10422:
Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2017
Charles R. Bostater Jr.; Stelios P. Mertikas; Xavier Neyt; Sergey Babichenko, Editor(s)

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