地理学报 ›› 2012, Vol. 67 ›› Issue (3): 301-311.doi: 10.11821/xb201203002
李庆祥1, 彭嘉栋2, 沈艳1
收稿日期:
2011-08-19
修回日期:
2012-11-14
出版日期:
2012-03-20
发布日期:
2012-03-20
基金资助:
LI Qingxiang1, PENG Jiadong2, SHEN Yan1
Received:
2011-08-19
Revised:
2012-11-14
Online:
2012-03-20
Published:
2012-03-20
Supported by:
摘要: 收集、整理全国1900-2009 年110 年逐月站点历史降水量资料,采取标准正态检验(SNHT) 方法,对台站序列进行了均一性检验,并对部分明显不连续的站点序列进行了均一化调整和订正。在此基础上,分别对近百年降水距平序列和1971-2000 年气候标准值进行了网格化,形成了逐月网格化气候数据集(5°×5°,2°×2°),并采用经验正交展开(EOF) 技术方案进行了统计插补实验,形成了完整的5°×5°经纬度网格点数据集。基于不同分辨率网格数据集,建立了110 年中国降水变化序列,计算了110 年中年及季节降水量变化趋势。结果表明,中国近110 年来年降水量变化略呈下降趋势,但没有达到统计显著性水平,各个季节的情况略有差别。统计插补后对1900年以后几年的降水量略有下降,使得近百年线性趋势略上升。
李庆祥, 彭嘉栋, 沈艳. 1900-2009 年中国均一化逐月降水数据集研制[J]. 地理学报, 2012, 67(3): 301-311.
LI Qingxiang, PENG Jiadong, SHEN Yan. Development of Homogenized Monthly Precipitation Dataset in China during 1900-2009[J]. Acta Geographica Sinica, 2012, 67(3): 301-311.
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