Hydrometeorological conditions of the Kerch Bay in 2017–2019
Based on the data from weekly hydrometeorological observations, conducted in the Kerch Bay in 2017–2019, comparative analysis of variability in average monthly values of surface air and water temperatures, wind activity and wave action, water transparency, and salinity of the upper water layer with those recorded in 2007–2009 has been conducted; these two time ranges have been also compared with similar conditions of the second half of the 20th century and the beginning of the 21st century. During the recent decade, a trend of the increase in the amount of hot summer days and the decrease of freezing winter ones was recorded, as well as the raise of water salinity by a significant measure, from 10.7–12.8 to 14.5–17.6 ‰, resulting from the reduction of freshwater river flow into the Azov Sea and increased evaporation due to higher water temperature. Prevailing negative anomalies of wind speed were observed, as well as the change of the negative trend in the first time range to the positive trend in the second one. Due to the limited fetch distance, average monthly wave height in the bay over the course of entire 2017–2019 observations did not exceed 0.9 m. Correspondence between positive trends of wave height and wind speed was recorded. During the same period, the annual maximum of transparency coincided with the summer season, whereas the annual minimum fell on different months of the other seasons.
| Main Authors: | , |
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| Format: | Journal Contribution biblioteca |
| Language: | Russian |
| Published: |
2020
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| Subjects: | Water transparency, Wind activity, Hydrometeorology, Surface layers, Salinity fields, River runoff, Seasonal variations, Wave height, Прозрачность воды, Ветровая активность, Гидрометеорология, Речной сток, Сезонные изменения, Поверхностный горизонт, Высота волны, ASFA_2015::M::Meteorological observations, ASFA_2015::S::Sea surface temperature, ASFA_2015::W::Wind data, |
| Online Access: | http://hdl.handle.net/1834/41754 |
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