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Proceedings Paper

Sensitivity of calibration gains to ocean color processing in coastal and open waters using ensembles members for NPP-VIIRS
Author(s): R. Arnone; R. Vandermeulen; S. D. Ladner; J. Bowers; P. Martinolich; G. Fargion; M. Ondrusek
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Paper Abstract

The sensitivity of ocean color products to variations in vicarious calibration gains at Top of Atmosphere (TOA) shows varying impacts in different water types for Suomi- NPP VIIRS. Blue water vicarious gains from MOBY in situ data, which is used for global open waters, and green water gains derived from complex coastal WaveCIS AERONET waters, have a different impact on spectral normalized water leaving radiances and the derived ocean color products (inherent optical properties, chlorophyll). We evaluated the influence of gains from open and coastal waters by establishing a set of ensemble-processed products. The TOA gains show a non-linear impact on derived ocean color products, since gains affect multiple ocean color processing algorithms such as atmospheric correction, NIR iterations, etc. We show how the variations within the ensemble TOA gain members spatially impact derived products from different water types (high CDOM, high backscattering, etc). The difference in color products derived from the Blue and Green water gain show a spatial distribution to characterize the product uncertainty in coastal and open ocean water types. The results of the ensemble gain members are evaluated with in situ matchups. Results suggest the sensitivity of the ocean color processing for open ocean verses coastal waters.

Paper Details

Date Published: 23 May 2014
PDF: 7 pages
Proc. SPIE 9111, Ocean Sensing and Monitoring VI, 911105 (23 May 2014); doi: 10.1117/12.2053409
Show Author Affiliations
R. Arnone, The Univ. of Southern Mississippi (United States)
R. Vandermeulen, The Univ. of Southern Mississippi (United States)
S. D. Ladner, U.S. Naval Research Lab. (United States)
J. Bowers, QinetiQ North America (United States)
P. Martinolich, QinetiQ North America (United States)
G. Fargion, San Diego State Univ. (United States)
M. Ondrusek, NOAA/NESDIS (United States)


Published in SPIE Proceedings Vol. 9111:
Ocean Sensing and Monitoring VI
Weilin W. Hou; Robert A. Arnone, Editor(s)

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