Revisiting summertime hot extremes in China during 1961-2015: Overlooked compound extremes and significant changes
Revisiting summertime hot extremes in China during 1961-2015: Overlooked compound extremes and significant changes
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DOI：
10.1002/2016gl072281
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发表时间：
2017-05-28
影响因子：
5.2
通讯作者：
Zhai, Panmao
中科院分区：
文献类型：
--
作者：
Chen, Yang;Zhai, Panmao
中国夏季极端高温可分为三种不同的类型，独立的热日，独立的热夜，和复合事件，基于不同的配置之间的每日最高和最低温度。这些亚型和传统定义的热日/夜的多个指标的线性趋势表现出显着差异的意义，幅度，甚至符号，特别是涉及白天极端事件。因此，成功地揭示了在常规分析中被掩盖的一些显著变化。特别是，独立的热日的优势已经显着衰减，伴随着快速繁荣的复合事件和/或独立的热夜在不同的地区。这些夜间加剧的极端炎热天气在持续时间、强度和空间范围上都有显著增加，在极端炎热事件中检测到的趋势要强得多。
Summertime hot extremes in China are categorized into three distinct types, i.e., independent hot days, independent hot nights, and compound events, based on differing configurations between daily maximum and minimum temperature. Linear trends for multiple indictors of these subtypes and traditionally defined hot days/nights exhibited remarkable differences in significance, magnitude, and even sign, especially for events involving daytime extremes. Thus, some significant changes masked in conventional analyses are successfully uncovered. Particularly, the dominance of independent hot days has decayed significantly, accompanied by a rapid boom of compound events and/or independent hot nights in different regions. These nighttime-accentuated hot extremes have exhibited significant increases in duration, intensity, and spatial extent, with much stronger trends detected in severest events.