N. P. Nezlin and V. Yu. Dyakonov
Shirshov Institute of Oceanology, Russian Academy of Sciences, Nakhimovskii pr. 36, Moscow, 117218 Russia
Received May 19, 1997; in final form, April 15, 1998
Abstract—The interannual variations of the surface plant pigment concentration measured by an CSCZ radi-
ometer from 1978–1986 are analyzed in different regions of the Black Sea. This index seems to correlate with
cyclic oscillations of winter air temperature; in the western shallow regions, it is also correlated with the Danube
discharge intensity. More intensive winter–spring blooms and a slightly lower level of pigment concentration
during the warm season are typical of the years with a mild winter. The peculiarities of the hydrological regime
of the Black Sea seem to be the reason for these regularities.
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