1998-2017年鄂霍次克海及邻近海域海面温度的卫星变化趋势

D. Lozhkin, Д М Ложкин, G. Shevchenko, Г В Шевченко
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引用次数: 1

摘要

对鄂霍次克海及其邻近海域,利用1998-2017年20年的卫星观测数据计算了一系列月平均海面温度值。在每个空间单元中,线性趋势的系数由最小二乘法确定。这些系数分别为每个月计算,为整个系列作为一个整体计算,也为季节的平均温度计算。分析了这些系数与近20年来观测到的鄂霍次克海水域冰面积减少的关系。结果表明,盆地表层热含量呈下降趋势,以盆地北部和西部地区减少最为明显。这一趋势在春季尤其明显,这可能是由于冰盖减少和冬季对流导致的更显著的海水冷却。
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Trends in sea surface temperature of the Sea of Okhotsk and adjacent water areas by satellite data in 1998–2017
For the Sea of Okhotsk and the adjacent water areas, a series of mean monthly sea surface temperature values were computed from satellite measurements of 20 years (1998–2017). In each space cell, the coefficients of the linear trend are determined by the method of least squares. Such coefficients were calculated for each month separately, for the whole series as a whole, and also for average values of the temperature for the season. The relationship of these coefficients to the observed decrease in ice extent in the water area of the Sea of Okhotsk during the last twenty years has been analyzed. It is shown that the heat content of the surface layer in this basin decreases, most significantly in its northern and western parts. This trend is especially pronounced in the spring, which may be due to a decrease in ice cover and a more significant cooling of the waters due to winter convection.
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