Abstract
The sea surface temperature (SST) variability in recent conditions of climate warming is analyzed for the coastal waters in the western Bering Sea and adjacent areas on the data of regular observations on coastal hydrometeorological stations in 1980–2016 and the data of NOAA_OI_SST_V2 reanalysis, taking into account the climate indices variations. The data series are analyzed using the methods of Empirical Orthogonal Functions, cluster analysis, and correlation analysis. Mean climatic trends are estimated for the air temperature as +0.27 о C/decade and for SST as +0.23 о C/decade; they explain 27 % and 35 % of the year-to-year variability, respectively. The warming patterns are not identical for all seasons and areas. The most rapid growth of the air temperature and SST is observed for warm season (on average +0.36 o C/decade and +0.49 o C/decade). Both year-to-year fluctuations of SST and its climatic trend increase from south to north, the SST trend has increased from 0.11 to 0.32 o C/decade. Statistically significant climatic trends are found also in the changes of zonal and meridional components of wind velocity and certain indices of atmosphere circulation.
Highlights
Ключевые слова: Берингово море, западная часть, прибрежные районы, термические условия, межгодовая изменчивость, тренды температуры, климатические индексы, корреляционные связи, разложение полей по эмпирические ортогональные функции (ЭОФ), региональные особенности
The sea surface temperature (SST) variability in recent conditions of climate warming is analyzed for the coastal waters in the western Bering Sea and adjacent areas on the data of regular observations on coastal hydrometeorological stations in 1980–2016 and the data of NOAA_OI_SST_V2 reanalysis, taking into account the climate indices variations
The data series are analyzed using the methods of Empirical Orthogonal Functions, cluster analysis, and correlation analysis
Summary
Ключевые слова: Берингово море, западная часть, прибрежные районы, термические условия, межгодовая изменчивость, тренды температуры, климатические индексы, корреляционные связи, разложение полей по ЭОФ, региональные особенности. Количественные оценки межгодовых изменений температуры воды в исследуемом районе в теплый период года по данным 9 ГМС представлены в табл. Σ2 — дисперсия Tw; D — вклад тренда в суммарную дисперсию, %; Tw± — тренд за 37 лет; КЛТт — коэффициент наклона линейного тренда в теплый сезон, оC/10 лет; КЛТм — максимальная величина этого коэффициента (над чертой — значение, под чертой — месяц); r — коэффициент корреляции температуры воды и воздуха на станции.
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