违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 1960~2011年中国日降水集中程度的时空变化特征-Spatial and Temporal Variability of Daily Precipitation Concentration in China during 1960-2011
doi:  10.3878/j.issn.1006-9585.2016.15248
1960~2011年中国日降水集中程度的时空变化特征

Spatial and Temporal Variability of Daily Precipitation Concentration in China during 1960-2011
摘要点击 147  全文点击 421  投稿时间:2015-11-05  
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基金:  国家自然科学基金资助项目41275012、41405135
中文关键词:  中国  降水集中指数(CI)  Mann-Kendall 检测  小波分析
英文关键词:  China  Precipitation concentration index (CI)  Mann-Kendall test  Wavelet analysis
              
作者中文名作者英文名单位
佟晓辉TONG Xiaohui解放军 31440 部队, 沈阳 110027
刘向培LIU Xiangpei解放军 31440 部队, 沈阳 110027
贾庆宇JIA Qingyu中国气象局沈阳大气环境研究所, 沈阳 110016
赫英明HE Yingming解放军理工大学气象海洋学院, 南京 211101
杨成荫YANG Chengyin空军哈尔滨飞行学院, 哈尔滨 150001
引用:佟晓辉,刘向培,贾庆宇,赫英明,杨成荫.2017.1960~2011年中国日降水集中程度的时空变化特征[J].气候与环境研究,22(3):301-314,doi:10.3878/j.issn.1006-9585.2016.15248.
Citation:TONG Xiaohui,LIU Xiangpei,JIA Qingyu,HE Yingming,YANG Chengyin.2017.Spatial and Temporal Variability of Daily Precipitation Concentration in China during 1960-2011[J].Climatic and Environmental Research(in Chinese),22(3):301-314,doi:10.3878/j.issn.1006-9585.2016.15248.
中文摘要:
      利用1960~2011 年的日降水资料,计算降水集中指数(Concentration Index,CI),分析中国区域降水集中程度的空间分布及时间变化特征,得到以下主要结论:CI 指数可有效描述我国日降水集中程度;我国CI 指数介于0.575 与0.750 之间,平均为0.652,总体呈现出东部大、西部小,夏季大、冬季小的特征;44.17%站点的CI 指数表现出增加趋势,55.83%的站点表现出减少趋势,其中10.36%站点的变化趋势通过95%信度水平的显著性检验,CI 指数显著增大的站点主要分布在西北、华中和西南地区,显著减小的站点主要分布在东北、华北、东南沿海及青藏高原东部等地区;3~5 年是各子区域CI 指数变化的主要周期,与对应区域降水量的变化周期较一致;1970 年左右和2000 年左右是显著周期性变化出现较集中的时间段。
Abstract:
      Based on daily precipitation data during 1960 and 2011, the precipitation concentration index (CI) is calculated for the purpose to study the spatial and temporal variability of daily precipitation concentration in China. The results are as follows. CI can well reflect the degree of precipitation concentration over China. The value of CI is between 0.575 and 0.750, and its mean value is 0.652. The CI values are large in eastern China and in the summer, and small in western China and in the winter. 44.17% of the stations show an upward trend of CI change and 55.83% show a trend of CI decrease, but the trends of CI change at only 10.36% of these stations are significant at the 95% confidence level. Those stations with significant CI increases are mainly distributed over northwestern China, central China, and southwestern China, while those stations with significant CI decreases are mainly distributed over northeastern China, northern China, southeastern coastal areas of China and the eastern Tibetan Plateau. The dominant period of CI change is 3 to 5 years, which is the same as that of precipitation. Significant periodic changes in CI are concentrated within the period from 1970 to 2000.
主办单位:中国科学院大气物理研究所 单位地址:北京市9804信箱
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