Physical Oceanography, Vol.
ANALYSIS OF OBSERVATIONS AND METHODS FOR CALCULATING
HYDROPHYSICAL FIELDS IN THE OCEAN
UPWELLING IN THE NORTHWEST PART OF THE BLACK SEA AT THE END
OF THE SUMMER SEASON AND ITS CAUSES
G. F. Dzhiganshin,
A. B. Polonskii,
and M. A. Muzyleva
By using the archival data of routine hydrometeorological and satellite observations, we perform the
analysis of the general regularities of manifestations of upwelling in the anomalies of the surface tem-
perature in the northwest part of the Black Sea at the end of the summer season. We describe the struc-
ture of coastal upwelling according to the data of a hydrological survey carried out in the Kalamitskii
Bay in September 2007 characterized by the extremely intense anomalies of sea surface temperature. By
using the data of reanalysis on the heat fluxes and the wind field, we analyze the cause-effect relations
responsible for the evolution of this upwelling.
The importance of investigation of the phenomenon of upwelling is explained by the permanently increas-
ing role of the rational management of natural resources. This phenomenon is especially intense in the coastal
regions. In these regions, the surface waters are characterized by high contents of biogenic elements, which cre-
ates favorable conditions for the development of phyto- and zooplankton. As a result, the regions of coastal up-
welling are characterized by the formation of commercial fish aggregations. As an example, we can mention a
region of fishery close to the African coast whose thermal structure is formed by the coastal upwelling devel-
oped in the region of the Canary Current. The phenomenon of upwelling is studied in a great number of works
(see, e.g.,  and the references therein).
In addition to the commercial significance of coastal upwelling, it plays a significant role from the climatic
point of view. There are numerous data on the strong influence of coastal upwelling on the climate of neighbor-
ing regions (see, e.g., [2, 3]). Its formation is accompanied by a decrease in the temperature of water (within
fairly broad ranges: from several degrees to 10–15°). As a rule, this phenomenon is observed for a period
varying from 3 to 5–6 days. Then the temperature of water increases to the normal climatic values [4–8].
Hence, the manifestations of coastal upwelling in the field of sea-surface temperature in the summer period cre-
ate significant difficulties of the recreational character. Indeed, as a result of its occasional (or even regular)
formation in recreational zones, upwelling leads to a sharp decrease in the temperature of water and, therefore,
to noticeable financial losses caused by the premature departure of tourists. As one of these zones, we can men-
tion the northwest part of the Black Sea.
Marine Hydrophysical Institute, Ukrainian National Academy of Sciences, Sevastopol, Ukraine.
Corresponding author; e-mail: firstname.lastname@example.org.
Corresponding author; e-mail: email@example.com.
Translated from Morskoi Gidrofizicheskii Zhurnal, No.
45–57, July–August, 2010. Original article submitted March 27, 2009;
revision submitted April 24, 2009.
0928–5105/10/2004–0281 © 2010 Springer Science+Business Media, Inc. 281