1736-2010年华南前汛期始日变化
Variation of starting date of pre-summer rainy season in South China from 1736 to 2010
查看参考文献17篇
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文摘
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根据清代华南雨雪分寸记载的内容、特点,参照华南地区前汛期降水特征,提出了利用雨雪分寸记载重建华南前汛期开始时间的方法,重建了1736-1911年福州与广州前汛期开始日期变化序列;并利用福州与广州(分别始于1953和1952年)逐日降水观测记录辨识了器测时期两地前汛期的逐年开始时间;据此分析了过去300年华南前汛期开始日期的年-年代际变化特征。结果表明:1736-2010年间,福州、广州两地前汛期开始时间平均为5月第1候;但存在显著的年际和年代际波动,其中重建时段(1736-1911年)的主周期为2~3年、准10年和准40年,器测时段的主周期为2~3年、准10年和准22年。在年际尺度,重建时段福州和广州前汛期开始时间最早的年份均为4月第4候,最晚的年份则分别为5月第6候和6月第1候;而器测时段两地前汛期开始时间的最早年、最晚年均为4月第4候和6月第1候。在年代际尺度,重建时段福州和广州相邻年代最大变幅分别为2.2候和1.6候;器测时段福州和广州相邻年代最大变幅则分别为2.5候和2.4候。 |
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其他语种文摘
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Based on the documented characteristics of Yu (rainfall)-Xue (snowfall)-Fen (Chinese length unit, 0.32 cm approximately)-Cun (10-Fens) archive in the Qing Dynasty, together with the features of precipitation in pre-summer rainy season in South China, the methods to reconstruct the starting date of pre-summer rainy season in South China was designed. Using the Yu-Xue-Fen-Cun archive, the series of starting date of pre-summer rainy season in Fuzhou and Guangzhou were reconstructed from 1736 to 1911. And the series of starting date of pre-summer rainy season during the instrumental period were identified by daily precipitation records in Fuzhou during 1953-2010 and Guangzhou during 1952-2010. The inter-annual and inter-decadal changes of the starting date for pre-summer rainy season in South China over the past 300 years were analyzed. The results show that the mean of starting date of pre-summer rainy season in South China was the first pentad of May; however there existed obvious inter-annual and inter-decadal variabilities in the starting date of pre-summer rainy season over South China, with quasi-cycles of 2~3 years, 10 years and 40 years during 1736-1911 and those of 2~3 years, 10 years and 22 years during the instrumental periods. The starting date in the earliest year was the fourth pentad of April, while the starting date in the latest year was the sixth pentad of May in Fuzhou and the first pentad of June in Guangzhou during 1736 to 1911; while the starting date in the earliest year and the latest year was the fourth pentad of April and the first pentad of June in Fuzhou during 1953-2010 and Guangzhou during 1952-2010. The maximum magnitude between the adjacent decades was 2.2 pentads in Fuzhou and 1.6 pentads in Guangzhou during the reconstructed periods; while it was 2.5 pentads and 2.4 pentads during the instrumental periods. |
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来源
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地理学报
,2014,69(3):303-311 【核心库】
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DOI
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10.11821/dlxb201403002
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关键词
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华南
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前汛期开始日期
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汛期重建
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降水变化
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雨雪分寸
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地址
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1.
湖北文理学院, 襄阳, 441053
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中国科学院地理科学与资源研究所, 北京, 100101
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0375-5444 |
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学科
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大气科学(气象学);海洋学 |
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基金
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国家973计划
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中国科学院战略性先导科技专项
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国家科技基础性工作专项
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文献收藏号
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CSCD:5100782
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