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Journal of Applied Remote Sensing • Open Access

Approach to developing numeric water quality criteria for coastal waters: transition from SeaWiFS to MODIS and MERIS satellites
Author(s): Blake A. Schaeffer; James D. Hagy; Richard P. Stumpf

Paper Abstract

States can adopt numeric water quality criteria into their water quality standards to protect the designated uses of their coastal waters from eutrophication impacts. The first objective of this study was to provide an approach for developing numeric water quality criteria for coastal waters based on archived SeaWiFS ocean color satellite data. The second objective was to develop an approach for transferring water quality criteria assessments to newer ocean color satellites, such as MODIS and MERIS. Measures of SeaWiFS, MODIS, and MERIS chlorophyll-a (Chl RS -a , mgm 3 ) were resolved across Florida’s coastal waters between 1998 and 2009. Annual geometric means of SeaWiFS Chl RS -a were evaluated to determine a quantitative reference baseline from the 90th percentile of the annual geometric means. A method for transferring to multiple ocean color sensors was implemented with SeaWiFS as the reference instrument. The Chl RS -a annual geometric means for each coastal segment from MODIS and MERIS were regressed against SeaWiFS to provide a similar response among all three satellites. Standardization factors for each coastal segment were calculated based on the differences between 90th percentile from SeaWiFS to MODIS and SeaWiFS to MERIS. This transfer approach was allowed for future assessments, typically with <7% difference in the calculated criteria.

Paper Details

Date Published: 18 June 2013
PDF: 19 pages
J. Appl. Remote Sens. 7(1) 073544 doi: 10.1117/1.JRS.7.073544
Published in: Journal of Applied Remote Sensing Volume 7, Issue 1
Show Author Affiliations
Blake A. Schaeffer, U.S. Environmental Protection Agency (United States)
James D. Hagy, U.S. Environmental Protection Agency (United States)
Richard P. Stumpf, National Oceanic and Atmospheric Administration (United States)


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