Title: Comparison of SeaWiFS and MODIS time series of inherent optical properties for the Adriatic Sea
Authors: MELIN Frederic
Citation: OCEAN SCIENCE vol. 7 no. 3 p. 351-361
Publisher: COPERNICUS GESELLSCHAFT MBH
Publication Year: 2011
JRC N°: JRC65251
ISSN: 1812-0784
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC65251
DOI: 10.5194/os-7-351-2011
Type: Articles in Journals
Abstract: Time series of inherent optical properties (IOPs) derived from SeaWiFS and MODIS are compared for the Adriatic Sea. The IOPs are outputs of the Quasi-Analytical Algorithm and include total absorption a, phytoplankton absorption a_ph, absorption associated with colored detrital material (CDM) a_cdm, and particle backscattering coefficient b_bp. The average root-mean square difference Delta computed for log-transformed distributions decreases for a from 0.084 at 412 nm to 0.052 at 490 nm, is higher for a_ph(443) (0.149) than for a_cdm(443) (0.071), and is approximately 0.165 for b_bp at various wavelengths. The SeaWiFS a at 443 and 490 nm, a_ph at 443 nm and b_bp are on average higher than the MODIS counterparts. Statistics show significant variations in space and time. There is an overall increasing gradient for Delta associated with the absorption terms from the open southern and central Adriatic to the northwest part of the basin, and a reversed gradient for the particulate backscattering coefficient. For time series analysis, only a(412) and a_cdm(443) currently present an unbiased continuity bridging the SeaWiFS and MODIS periods for the Adriatic Sea.
JRC Institute:Institute for Environment and Sustainability

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