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2003 vs 2002: A large amplitude wintertime temperature anomaly reversion event and its anomalous atmospheric circulationq

机译:2003年与2002年:冬季出现大幅度的温度异常恢复事件及其大气环流异常q

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摘要

It is revealed that there happened a large amplitude wintertime temperature anomaly reversion event (LTAR) in Northern Hemisphere high latitude regions and South Australia for the year 2003 versus 2002, with the most notable change in Eurasia, eastern North America, North Pacific, and South Australia. The accompanying atmospheric general circulation anomalies are analyzed and the dominant changes in the circulation are found out. The anomalous cyclonic eddies over the north Pacific and the anomalous anticyclonic eddies over North Europe that cooperate each other are mostly linked with the event. Both anomalous eddy systems are connected with the remote teleconnection patterns respectively. The research also suggests the existence of a cross-equator teleconnection pattern, namely, the Northern Pacific-Western Pacific-Australia teleconnection pattern (NPWPA). It is not only related to LTAR, but also associated with the temperature transition from cold episode to warm episode in the year 2003 versus 2002 during December-January-February.
机译:结果表明,与2002年相比,北半球高纬度地区和南澳大利亚在2003年与2002年发生了一个大幅度的冬季温度异常恢复事件(LTAR),其中最显着的变化发生在欧亚大陆,北美东部,北太平洋和南部澳大利亚。分析了伴随的大气总环流异常,并发现了环流的主要变化。北太平洋上空的异常旋风涡流和北欧上空的反旋风涡流相互配合,这与这一事件息息相关。两个异常涡流系统分别与远程遥距连接。研究还表明存在交叉赤道远距连接模式,即北太平洋-西太平洋-澳大利亚远距连接模式(NPWPA)。它不仅与LTAR有关,而且与12月至1月2月的2003年与2002年从冷事件到暖事件的温度变化有关。

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