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近60年我国东部区域性持续高温过程变化特征

林爱兰 谷德军 彭冬冬 郑彬 李春晖

林爱兰, 谷德军, 彭冬冬, 等. 近60年我国东部区域性持续高温过程变化特征. 应用气象学报, 2021, 32(3): 302-314. DOI:  10.11898/1001-7313.20210304..
引用本文: 林爱兰, 谷德军, 彭冬冬, 等. 近60年我国东部区域性持续高温过程变化特征. 应用气象学报, 2021, 32(3): 302-314. DOI:  10.11898/1001-7313.20210304.
Lin Ailan, Gu Dejun, Peng Dongdong, et al. Climatic characteristics of regional persistent heat event in in the eastern China during recent 60 years. J Appl Meteor Sci, 2021, 32(3): 302-314. DOI:  10.11898/1001-7313.20210304.
Citation: Lin Ailan, Gu Dejun, Peng Dongdong, et al. Climatic characteristics of regional persistent heat event in in the eastern China during recent 60 years. J Appl Meteor Sci, 2021, 32(3): 302-314. DOI:  10.11898/1001-7313.20210304.

近60年我国东部区域性持续高温过程变化特征

DOI: 10.11898/1001-7313.20210304
资助项目: 

国家重点研发计划 2018YFC1505801

国家自然科学基金项目 41575043

详细信息
    通信作者:

    林爱兰, allin@gd121.cn

Climatic Characteristics of Regional Persistent Heat Event in the Eastern China During Recent 60 Years

  • 摘要: 利用1961—2019年中国2407个气象站的日最高气温资料,在判别华南、长江、黄淮和华北4个区域持续高温过程的基础上,比较各区域持续高温过程的气候变化特征。结果表明:华南区域性持续高温过程跨越季节最长,从5月中旬至10月初均可能出现;华南区域性持续高温指数存在显著的线性增长趋势,其增长率最高(3.3 d·(10 a)-1)。长江区域性持续高温过程持续性强,气候平均年累积日数最多,但通常出现区域持续高温过程最迟;长江区域性持续高温指数存在线性增长趋势。黄淮区域性持续高温指数的线性增长趋势不明显,但黄淮区域历史上仅有的4次非夏季持续高温过程均发生于20世纪90年代末至21世纪初。华北区域性持续高温过程气候平均年累积日数少、结束早;华北区域性持续高温指数存在显著的线性增长趋势,线性增长相关系数仅次于华南。长江和华南两区域持续高温指数的相对强弱存在显著的年代际变化,1961—1978年长江明显强于华南,1979—2019年则为华南略强于长江。
  • 图  1  夏季以江西弋阳站为基准点(红色圆点)得到的空间相关(等值线)(填色区为正相关达到0.05显著性水平,红色框表示长江区域)(a)及中国东部4个区域分布(蓝色点为气象站,红线框由南至北依次为华南区域、长江区域、黄淮区域和华北区域,红色圆点为各区的基准点)(b)

    Fig. 1  Spatial correlation coefficients(the contour) of summer temperature in the eastern China with Yiyang Station in Jiangxi Province(the red dot) (the shaded denotes the positive correlation passing the test of 0.05 level.The red box is the Yangtze River domain)(a) and four domains in the eastern China(blue dots are stations; red boxes from south to north are named the South China domain, the Yangtze River domain, the Huanghuai domain and the North China domain;red dots are the reference points)(b)

    图  2  2020年6—8月华南区域、长江区域和黄淮区域的平均日最高气温

    Fig. 2  Regional mean daily maximum temperature in the South China domain, the Yangtze River domain and the Huanghuai domain during Jun-Aug in 2020

    图  3  华南区域、长江区域、黄淮区域和华北区域持续高温过程次数与持续日数

    Fig. 3  Frequency and duration of persistent heat event in the South China domain, the Yangtze River domain, the Huanghuai domain and the North China domain

    图  4  1961—2019年华南区域、长江区域、黄淮区域和华北区域的持续高温过程发生时间

    Fig. 4  Occurrence time of persistent heat event during 1961-2019 in the South China domain, the Yangtze River domain, the Huanghuai domain and the North China domain

    图  5  1961—2019年华南区域、长江区域、黄淮区域和华北区域的持续高温指数

    Fig. 5  Persistent heat index in the South China domain, the Yangtze River domain, the Huanghuai domain and the North China domain during 1961-2019

    图  6  1961—2019年长江区域与华南区域的持续高温指数差值

    Fig. 6  Difference of persistent heat index between the Yangtze River domain and the South China domain during 1961-2019

    图  7  1961—2019年华南区域和长江区域的长持续高温过程年累积日数

    Fig. 7  Accumulated days for long lived heat event in the South China domain and the Yangtze River domain during 1961-2019

    图  8  1961—2019年华南区域和长江区域的普通持续高温过程年累积日数

    Fig. 8  Accumulated days for short lived heat event in the South China domain and the Yangtze River domain during 1961-2019

    表  1  中国东部4个高温区的基准点、范围以及区域平均最高气温的第80百分位值

    Table  1  Reference points of correlation analysis and 4 domains in the eastern China

    区域 基准点 纬度 经度 第80百分位值/℃
    华南 广东罗定 21°~26°N 105°~120°E 33.7
    长江 江西弋阳 26°~32°N 105°~122°E 33.8
    黄淮 河南郾城 32°~37°N 105°~122°E 32.5
    华北 北京通州 37°~43°N 105°~122°E 30.6
    下载: 导出CSV

    表  2  中国东部4个区域1961—2019年的持续高温过程次数及过程持续日数

    Table  2  Number and duration of persistent heat event in 4 domains in the eastern China during 1961-2019

    区域 过程总数 年平均次数 过程平均持续日数/d 最长持续日数/d
    华南 193 3.3 5.1 32
    长江 163 2.8 6.4 27
    黄淮 131 2.2 5.0 15
    华北 45 0.8 3.9 8
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-01-18
  • 修回日期:  2021-04-20
  • 刊出日期:  2021-05-31

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