Physical Oceanography, Vol. 14, No. 3, 2004
EXPERIMENTAL AND FIELD RESEARCH
INTERNATIONAL SUBSATELLITE EXPERIMENT ON THE OCEANOGRAPHIC
PLATFORM (KATSIVELI, CRIMEA)
G. K. Korotaev, G. A. Khomenko, M. Shami, G. P. Berseneva,
O. V. Martynov, M. E. Lee, E. B. Shibanov, T. Ya. Churilova,
A. S. Kuznetsov, and A. K. Kuklin
We present the description and preliminary results of the international subsatellite experiment
carried out on the oceanographic platform located in the Black Sea (near the South Coast of Cri-
mea in the region of Katsiveli). A brief description of the equipment and experimental procedure
is given. Some preliminary results of the experiment, including the data on the behavior of
biooptical parameters as functions of time and their correlation, are presented. These data cover
a broad range of variation of the biooptical properties of the sea and can be used for the quan-
titative comparison with the data of the MERIS, MODIS, and SeaWiFS scanners.
The satellite observations of sea color were originated in the late 1970s and early 1980s. Even the data of
the first experimental measurements carried out by the CZCS chromatic scanner installed on the Nimbus-7 sat-
ellite and the MKS tracing instrument placed on the Interkosmos-21 satellite showed that the data of observa-
tions in the visible spectrum of electromagnetic waves are highly informative and enable one to obtain quantita-
tive estimates of the concentration of phytoplankton in waters of the World Ocean. The second half of the 1990s
was characterized by a qualitatively new stage in the investigation of sea color from satellites. Indeed, the oper-
ating characteristics of new MOZ, OCTS, and SeaWiFS scanners launched in 1996 were much better and, in
addition, these instruments were capable of carrying out continuous (in time) measurements within fairly broad
bands. Furthermore, the algorithms of processing of the data of measurements and, in particular, the algorithms
of introducing atmospheric correction, were significantly improved.
At the same time, the accuracy of evaluation of the concentration of phytoplankton according to the data of
satellite measurements still remains insufficient. The errors of calculations are determined both by the variety of
atmospheric aerosol (whose influence cannot be completely removed by the contemporary methods used for at-
mospheric correction) and by the great number of parameters of seawater (whose influence is especially pro-
nounced in the coastal waters).
To determine the causes of insufficient adequacy of the algorithms of processing the data of spectral satel-
lite observations in the visible spectrum of electromagnetic waves and be able to improve these algorithms, it is
necessary to have a complete picture of the regularities of formation of radiation in the ocean–atmosphere sys-
tem. This problem can be solved in the course of specially planned full-scale experiments aimed at the verifica-
tion of the algorithms of processing the data of satellite observations by comparing the results with the data of
Marine Hydrophysical Institute, Ukrainian Academy of Sciences, Sevastopol; Université du Littorale Côte d’Opale, Dunkerque,
France; Institute of Biology of Southern Seas, Ukrainian Academy of Sciences, Sevastopol; Experimental Division of the Marine Hy-
drophysical Institute, Ukrainian Academy of Sciences, Katsiveli, Crimea. Translated from Morskoi Gidrofizicheskii Zhurnal, No.
28–38, May–June, 2004. Original article submitted September 27, 2002; revision submitted October 16, 2002.
150 0928-5105/04/1403–0150 © 2004 Springer Science+Business Media, Inc.