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气象:2017,43(8):943-952
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基于超热因子的中国热浪事件气候特征分析
肖安1,2,周长艳3
(1 江西省气象台,南昌 330096 2 中国气象科学研究院,北京 100081 3 中国气象局成都高原气象研究所,成都 610072)
Characteristic Analysis of the Heat Wave Events over China Based on Excess Heat Factor
XIAO An1,2,ZHOU Changyan3
(1 Jiangxi Provincial Meteorological Observatory, Nanchang 330096 2 Chinese Academy of Meteorological Sciences, Beijing 100081 3 Institute of Plateau Meteorology, CMA, Chengdu 610072)
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投稿时间:2016-02-29    修订日期:2017-05-23
中文摘要: 采用世界气象组织气候委员会推荐基于超热因子(excess heat factor,EHF)的热浪指标并加以拓展,对中国1958—2013年的热浪事件气候变化进行分析。结果表明:华中、华东和西北地区的平均热浪次数要略多于中国其他地区;华东和华中地区的热浪最长持续天数和热浪总天数最多;热浪EHF最大值、年均EHF值和EHF中位数值有北高南低的分布特征;华东、华中地区的轻度、中度热浪天数较多,重度热浪天数较少,中国北部和西部则相反;中国热浪EHF年总量有增加的趋势、准3年的年际变化周期和明显的年代际突变;中国大部分地区的高温热浪有增加趋势,但在华中、华北、东北的部分地区变化不显著。以云南德钦站为例说明中国西部高原地区不仅存在高温热浪事件,而且在进入21世纪后日益严重。
Abstract:Characteristic analysis of the heat wave events over China from 1958 to 2013 based on excess heat factor (EHF) was analyzed, and some heat wave indices and aspects were recommended by the Commission for Climatology (CCl) Expert Team on Climate Risk and Sector Specific Climate Indices (ET CRSCI) of the World Meteorological Organization (WMO) World Climate Programme and the other indices were derived in this paper. The results show that, from 1958 to 2013, the heat wave numbers in central, eastern and northwestern China were more than that in other areas. The heat wave duration and heat wave frequency were most in eastern and central China. The heat wave amplitude was higher in northern China and lower in southern China. The resemble feature could be found in the heat wave mean and the heat wave median, as well. The heat wave days and the heat wave severe days were most in eastern and central China, the heat wave extreme days were most in northern and western China. The indices of the heat waves in most areas of China showed an increasing trend for the period 1958-2013. The heat wave annual value showed a significant increasing trend and it has interannual variation mainly in quasi three year oscillation. The main mutation was found in 1994 by using 10 years’ moving average. The heat wave events at Deqin Station of Yunnan Province were analyzed as an example in order to explain the heat wave events in western plateau area of China, and the increasing trend in the 21st century.
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基金项目:江西省科技支撑重大项目 (20152ACG70002)资助
引用文本:
肖安,周长艳,2017.基于超热因子的中国热浪事件气候特征分析[J].气象,43(8):943-952.
XIAO An,ZHOU Changyan,2017.Characteristic Analysis of the Heat Wave Events over China Based on Excess Heat Factor[J].METEOROLOGICAL MONTHLY,43(8):943-952.