战云健,鞠晓慧,范邵华,周志刚,唐国利,任国玉. 2021. 1965-2019年中国夏季分钟降水空间分布与长期趋势分析[J]. 气象学报, (0):-, doi:10.11676/qxxb2021.036
1965-2019年中国夏季分钟降水空间分布与长期趋势分析
An analysis of summer per-minute precipitation in China during 1965-2019
投稿时间:2019-10-08  修订日期:2021-01-08
DOI:10.11676/qxxb2021.036
中文关键词:  分钟降水  最大降水 气候变化  夏季 中国
英文关键词:Per-minute  precipitation, Maximum  precipitation, Climate  change, Summer, China
基金项目:“国家气象科学数据中心建设”专项资金;国家重点科技研发计划项目“全球变化及应对”重点专项(2018YFA0605603),
作者单位邮编
战云健 国家气象信息中心 100081
鞠晓慧 国家气象信息中心 100081
范邵华 国家气象信息中心 100081
周志刚 河南省气象探测数据中心 450003
唐国利 国家气象信息中心 100081
任国玉 国家气候中心 100081
摘要点击次数: 15
全文下载次数: 7
中文摘要:
      利用较为完整的中国夏季2225站1965-2004年的自记纸以及2435站2005-2019年的自动站分钟降水数据(国家气象信息中心气象数据共享服务平台,电话:(+86)010-68407499),分析了中国大陆分钟降水的空间分布和长期变化特征。结果表明,全国夏季分钟降水频率基本呈现从北到南变多的特征,分钟降水强度则在西北地区较小,东部的平原地区较大。1分钟、连续5分钟最大一次降水量在内蒙古、华北最多,连续10分钟以上时段的最大一次降水量和年平均最大降水量在华南沿海地区最多,所有最大降水量指标的最少值都出现在南疆一带。1965-2004年以及2005-2019年,夏季分钟降水频率都存在增加趋势,是引起全国平均夏季降水量增加的主要原因;分钟降水强度则没有明显趋势性变化。1965-2019年数分钟内到一日内的最大降水量距平百分率都显著增加,其中连续半小时左右的最大降水量增加最快。总体来看,中国大陆每分钟的降水并未趋向于极端化,极端降水量的增加可主要归因于暴雨过程持续时间的增加。
英文摘要:
      Based on the per-minute precipitation data of 2225 self-recording station from 1965 to 2004 and 2435 automatic weather station from 2005 to 2019 in China (Meteorological data sharing service platform of National Meteorological Information Center, Tel.: (+86) 010-68407499 ), the characteristics of climate distribution and climatic variation of per-minute precipitation in mainland China were analyzed. Results show that the minute precipitation frequency basically become more from north to south, Per-minute precipitation intensity is smaller in Northwest China and larger in the eastern plains areas. Maximum precipitation in 1 minute and five minutes are most in Inner Mongolia and North China. Maximum precipitation in more than 10 minutes and annual averages of maximum precipitation in different periods are all heaviest in south China coastal areas, Minimum precipitation indices are all in southern xinjiang region. From 1965 to 2004 and 2005 to 2019, the minute rainfall frequency increased in summer, which is the main cause of the increased national average summer precipitation. Per-minute precipitation intensity had no obvious trend. Anomaly percentages of the annual maximum precipitation in several minutes to one day all increased, in which the continuous time about half an hour increased fastest. Overall, the per-minute precipitation did not tend to be extremalization, and the increased extreme precipitation can be mainly attributed to the increase of the duration of the heavy rain process.
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