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华东地区不同等级降水日数的时空分布特征

吴昊旻 黄安宁 姜燕敏

吴昊旻, 黄安宁, 姜燕敏. 华东地区不同等级降水日数的时空分布特征[J]. 气候与环境研究, 2013, 18(3): 387-396. doi: 10.3878/j.issn.1006-9585.2012.11187
引用本文: 吴昊旻, 黄安宁, 姜燕敏. 华东地区不同等级降水日数的时空分布特征[J]. 气候与环境研究, 2013, 18(3): 387-396. doi: 10.3878/j.issn.1006-9585.2012.11187
WU Haomin, HUANG Anning, JIANG Yanmin. Temporal and Spatial Distribution of Different Grades of Precipitation Days in East China[J]. Climatic and Environmental Research, 2013, 18(3): 387-396. doi: 10.3878/j.issn.1006-9585.2012.11187
Citation: WU Haomin, HUANG Anning, JIANG Yanmin. Temporal and Spatial Distribution of Different Grades of Precipitation Days in East China[J]. Climatic and Environmental Research, 2013, 18(3): 387-396. doi: 10.3878/j.issn.1006-9585.2012.11187

华东地区不同等级降水日数的时空分布特征

doi: 10.3878/j.issn.1006-9585.2012.11187
基金项目: 国家自然科学基金项目41175086;浙江省丽水市科技计划项目2010JYZB10;江苏高校优势学科建设工程资助项目

Temporal and Spatial Distribution of Different Grades of Precipitation Days in East China

  • 摘要: 根据华东地区1961~2010年逐日降水量台站观测资料,利用趋势分析、Mann-Kendall检验和经验正交函数(EOF)分析等方法揭示不同强度降水日数的时空演变特征。结果表明,华东地区的小雨日数为总雨日数的72.42%,占总雨日数的最大比重。同时发现小雨日数和总雨日数(暴雨和大暴雨日数)表现为显著的减少(增加)趋势,说明总雨日数的减少主要是由于小雨日数的减少所致。EOF分析结果显示总雨日和小雨日的主要EOF模态在空间上表现出全场一致的减少趋势以及南北反相位的特征。福建中部既是总雨日数和小雨日数最大的区域,也是两者减少趋势最明显的地区。暴雨日数和大暴雨日数高值中心出现的区域基本重合,大致在浙江—江西—安徽三省交界处。
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出版历程
  • 收稿日期:  2011-12-06
  • 修回日期:  2012-10-25

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