Aquatic Sciences Meeting, Albuquerque 2001

CS24 Optics

Date: Tuesday, February 13, 2001, Time: 2:45:00 PM

Location: Sandia/Santa Ana

Stramska, M, , Hancock Institute for Marine Studies, University of Southern California, Los Angeles, USA, mstramska@ucsd.edu

Stramski, D, , Scripps Institution od Oceanography, La Jolla, USA, stramski@mpl.ucsd.edu

Hapter, R, , Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland,

Kaczmarek, S, , Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland,

Ston, J, , Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland,

THE ALGORITHMS FOR THE ANALYSIS OF SATELLITE IMAGERY OF OCEAN COLOR IN THE ARCTIC SEAS

The development of regional algorithms can minimize errors in the retrieval of ocean properties from satellite-derived ocean color. We collected bio-optical data in the Norwegian and Greenland Seas in the summer of 1998, 1999, and 2000. Our data set includes vertical profiles of spectral downwelling irradiance, upwelling radiance, backscattering coefficient, and analyses of water samples for chlorophyll a and particulate absorption. With these data we examined the performance of global correlational algorithms that are presently in common use for estimating chlorophyll a, and total and phytoplankton absorption coefficients at 442 nm, from the blue-to-green ratio of remote-sensing reflectance. Our data showed that the variability in this ratio is driven primarily by the changes in the relative contribution of water and particles to total absorption in the respective light wavebands. The effect of the variability in the blue-to-green ratio of the backscattering coefficient is of secondary importance in the investigated waters. We determined relationships that provide improved estimates of chlorophyll and absorption coefficient in the investigated polar region.

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Aquatic Sciences Meeting, Albuquerque 2001

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