Atlantic water temperature and climate in the Barents Sea, 2000-2009
Atlantic water temperature and climate in the Barents Sea, 2000-2009
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DOI：
10.1093/icesjms/fss075
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发表时间：
2012-07-01
影响因子：
3.3
通讯作者：
Trofimov, Alexander G.
中科院分区：
文献类型：
--
作者：
Boitsov, Vladimir D.;Karsakov, Alexey L.;Trofimov, Alexander G.
使用科拉剖面的数据分析了大西洋水温 (AW) 的逐年变化，这对巴伦支海的海洋气候和生态系统有很大影响。 20 世纪末年平均气温呈正趋势，但过去十年仅出现正异常。其中9年的气温比1951-2000年的长期平均气温高0.5-1.28℃，2006年记录了该剖面110年来观测的历史最高值。高气温和水温与海冰覆盖减少同时发生，特别是在十月至四月期间，冰覆盖面积季节性扩大。提出了基于 AW 温度、气温和冰盖变化的巴伦支海整体气候指数 (CI)。通过外推近似 CI 的六次多项式，可以预测到 2020 年巴伦支海的未来气候。
Year-to-year variability in the temperature of Atlantic water (AW), which has a strong influence on the marine climate and ecosystem of the Barents Sea, was analysed using data from the Kola Section. With a positive trend in mean annual temperature during the late 20th century, only positive anomalies were registered during the past decade. In nine of those years, the temperature was warmer than the 1951-2000 long-term mean by 0.5-1.28C, and in 2006, the historical maximum for the 110-year period of observations along the section was recorded. High air and water temperature coincided with reduced sea-ice cover, especially between October and April, when there is seasonal enlargement of the ice-covered area. An integral climate index (CI) of the Barents Sea based on the variability in temperature of AW, air temperature, and ice cover is presented. A prediction of future Barents Sea climate to 2020 is given by extrapolating the sixth degree polynomial approximating the CI.