I. G. Shokurova, A. V. Garmashov, Yu. N. Toloknov, A. I. Korovushkin
Marine Hydrophysical Institute of RAS, Sevastopol, Russia
Abstract
This article is devoted to the results of the analysis of long-term measurements of wind speed and wind direction, air temperature and relative humidity, performed on the fixed offshore platform in the Karkinitsky Gulf on the North-Western shelf of the Black Sea. It was found that the most frequent winds are the north winds and north-east winds, the least frequent – south-east winds. Maximum wind speed is measured up at the eastern and southern winds, and the minimum – at the south-east winds. Moving of sea air or air from land by winds has a significant impact on the temperature and relative humidity in the platform area. In winter, the air temperature during the southern sea winds exceeds the temperature during the Northern winds from land by an average of 7 °C. In summer, the air temperature during the Eastern winds from land is at 2,5 °C higher than during the Southern sea winds. In August and September, the value of relative humidity during Eastern winds from land is by an average at 15 % less than in the South-West sea winds. The authors also give a comparison of the seasonal variability of wind speed, temperature and relative humidity with data of atmospheric reanalyses and coastal weather stations.
Keywords
the Black Sea, the North-West shelf, sea measurement, monitoring, wind speed, wind direction, air temperature, relative humidity