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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (23): 171-179.doi: 10.11924/j.issn.1000-6850.2012-3679

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

中国冬季暖日频率和冷日频率变化特征分析

赵连伟 房一禾 于杨 姜鹏 王当 王小桃 朱玲   

  • 收稿日期:2012-11-12 修回日期:2013-03-06 出版日期:2013-08-15 发布日期:2013-08-15

Variation Characteristics of Winter Warm Daytime and Cold Daytime Frequency in China

  • Received:2012-11-12 Revised:2013-03-06 Online:2013-08-15 Published:2013-08-15

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摘要： 为了分析在全球气候变暖的背景下，中国冬季极端气温事件的变化特征，采用经过逐日均一化处理的（排除台站迁移对资料均一性的影响）中国201个台站1960—2009年冬季逐日最高和最低气温资料，对中国冬季暖日频率和冷日频率这2个极端气温指标的时空变化特征进行分析。结果表明：1960—2009年2个极端气温指标在全国冬季为一致的异常偏冷或异常偏暖的特征，其中暖日频率为上升趋势，冷日频率为下降趋势；1960—2009年北方冷日频率的均方差普遍大于南方；近50年来，暖日频率趋势系数在全国均为正趋势，冷日频率在全国均为负趋势，总体来讲，北方的趋势系数均略大于南方；近50年来，这2个极端气温指标均有明显的区域特征，且各分区均呈变暖趋势，但各区突变时间不同。

关键词: 枸杞, 枸杞

Abstract: In order to analyze the variation characteristics of the extreme weather events in China under the background of global warming, based on the homogeneous daily maximum and minimum temperature data without the influence of meteorological station relocation of 201 observational stations in China during 1960-2009, the spatial and temporal features of the winter warm and cold daytime frequency were studied. Results showed that: during 1960-2009, winter warm and cold daytime frequency showed an identical high frequency abnormal or low frequency abnormal. Warm daytime frequency increased. The cold daytime frequency decreased. The standard deviation of cold daytime frequency in the north was larger than that in the south. The trend coefficient’s distribution of warm daytime frequency increased all over China, and the cold daytime frequency decreased all over China. The trend coefficients in the north were larger than that in the south. Winter warm and cold daytime frequency showed obvious area feature. All the regions were warming and warming. The mutation years were different from area to area.