Physical Oceanography, Vol.
SPECIFIC FEATURES OF THE INTERANNUAL AND SEASONAL VARIATIONS
OF HYDROMETEOROLOGICAL CONDITIONS IN THE REGION OF KERCH
STRAIT FOR THE LAST TWO DECADES
P. D. Lomakin,
D. B. Panov,
and E. O. Spiridonova
On the basis of the analysis of the archival data, we reveal some regularities of the interannual and sea-
sonal variations of the parameters of atmospheric transport, winds, air temperature, the amount of at-
mospheric precipitation in the Kerch region, the temperature of water in the Kerch Strait, and the water
discharge through the strait observed for about the last two decades. It is shown that the intensities of
the southeast atmospheric transport and wind activity predominant for the previous 30-yr period de-
creased for the analyzed time period as compared with the previous period, whereas the amount of at-
mospheric precipitation and the annual average temperatures of water in the strait and air in the Kerch
region increased. We also reveal the presence of direct qualitative relationship between the intensity of
atmospheric transport over the Kerch Strait and the water discharge in its water area.
The water area of the Kerch Strait and the parts of the seas neighboring with this area are regarded as espe-
cially ecologically unfavorable regions of the Azov–Black-Sea basin. The powerful anthropogenic influence
permanently increasing in this region strongly affects numerous important components of the ecosystem of the
strait, such as the system of currents, water exchange, vertical stratification of waters, ice conditions, hypoxia,
migration of commercial fishes, and their mass death. The above-mentioned problems and various aspects of
these problems are now discussed in numerous works (see, e.g., [1–6]).
The problems analyzed in the present work deal with poorly studied components of the ecological complex
of the Kerch region. Thus, we consider the current state and time dependences of the principal meteorological
elements of the region, as well as the temperature of water and its discharge through the Kerch Strait.
Note that regular instrumental measurements of currents in the Kerch Strait aimed at the evaluation of the
water discharge through its northern narrow neck are not performed for the last two decades. The absence of
any data about the discharge and the impossibility of its direct evaluation at present make the solution of various
practical and scientific problems quite complicated. In this connection, we make attempt to reveal the relation-
ship between the water discharge through the Kerch Strait and the atmospheric transport over its water area.
Material and Method
At the beginning of the 1990s, the following significant changes were recorded in the interannual course
and seasonal variations of the hydrometeorological characteristics of the analyzed region (note that these
changes were not recorded earlier): the intensity of the predominant southeast atmospheric transport and wind
activity decreased, the amount of precipitation increased, the annual average temperatures of water in the strait
Marine Hydrophysical Institute, Ukrainian National Academy of Sciences, Sevastopol, Ukraine.
Southern Scientific-Research Institute of Marine Fishery and Oceanography, Kerch, Ukraine.
Translated from Morskoi Gidrofizicheskii Zhurnal, No.
36–48, March–April, 2010. Original article submitted September 11, 2008;
revision submitted December 9, 2008.
0928–5105/10/2002–0109 © 2010 Springer Science+Business Media, Inc. 109