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中国近50年来群发性高温事件的识别及统计特征

DOI: 10.6038/cjg20140610, PP. 1782-1791

Keywords: 群发性高温事件,识别方法,统计特征

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Abstract:

本文提出一种简化的识别群发性气候事件方法,对近50多年来全国群发性高温事件识别结果表明该方法物理意义明确,客观有效,符合实际.通过对近50年来群发性高温事件统计发现,不论是从发生频数、持续时间、影响站数还是综合强度来看,2000年以后的群发性高温事件都是5个年代中最显著的.与此同时,群发性高温事件具有明显的区域特征,长江以南地区发生频率最高,其次为黄河下游华北地区,以新疆为主的西北地区亦是多发区,各个区域群发性高温事件在不同月份的分布差异体现了我国季风雨带移动及下垫面的影响.

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