Role of the Greenland Sea ice anomaly in the late-spring drought over Northwest ChinaOA
Role of the Greenland Sea ice anomaly in the late-spring drought over Northwest China
晚春西北地区干旱的发生对西北地区气候和农业生产等具有重要的影响,但在近几十年,西北干旱状况呈现出缓解的趋势.本文研究了前期北极海冰异常对5月中国西北地区(降水短缺引起的)干旱异常的影响.进一步研究表明,二至四月格陵兰海海冰偏多时,西北地区干旱有所缓解.偏多的格陵兰海海冰可激发出经向环流异常,环流异常通过海-气相互作用在北大西洋产生海温异常,主要表现为格陵兰岛以南和北大西洋副热带海温偏高,亚速尔群岛以西海温偏低.这种海温异常可持续到5月,并引发从北大西洋经斯堪的纳维亚半岛和中亚至中国西北地区的纬向波列,并在西北地区产生气旋环流异常,从而导致该地区水汽辐合,干旱状况有所缓解.
Yang Liu;Huopo Chen
Nansen-Zhu International Research Centre,Institute of Atmospheric Physics Chinese Academy of Sciences,Beijing,ChinaNansen-Zhu International Research Centre,Institute of Atmospheric Physics Chinese Academy of Sciences,Beijing,China||Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University for Information Science and Technology,Nanjing,China
北极海冰格陵兰海北大西洋海温干旱中国西北
Arctic sea iceGreenland SeaNorth Atlantic SSTDroughtNorthwest China
《大气和海洋科学快报（英文版）》 2025 (1)
1-5,5
This research was supported by the National Natural Science Foun-dation of China[grant numbers 41991281 and 42005028].
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