| 华北平原近45年气候变化特征分析 |
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| 引用本文： | 谭方颖,王建林,宋迎波.华北平原近45年气候变化特征分析[J].气象,2010,36(5):40-45. |
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| 作者姓名： | 谭方颖 王建林 宋迎波 |
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| 作者单位： | 国家气象中心,北京,100081 |
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| 基金项目： | 中国气象局项目“粮食安全业务保障系统建设”资助 |
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| 摘 要： | 为研究华北平原气候时空变化特征,选用华北平原53站1961—2005年逐日气象资料,采用趋势分析法分析华北平原主要气候要素时空演变特征,利用M-K突变检验法确定气候要素突变年。结果表明:年平均气温升高趋势明显,尤其是20世纪90年代以后;降水量总体变化趋势不明显,20世纪80年代中后期开始,由多雨期转为少雨期;近45年来华北平原的气候经历了一个"冷湿-暖干"的变化过程;年日照时数减少趋势明显。华北平原增温主要在1—4月;降水量在多雨的4月、7、8月减少趋势明显;光照变差的主要原因是夏季和冬春季日照时数的减少。空间上,南北之间温差呈减小趋势,而降水量和日照时数之差则相反。气温升高使得积温增加,热量资源更加丰富。
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| 关 键 词： | 气候要素 变化特征 华北平原 |
| 收稿时间： | 2008/5/15 0:00:00 |
| 修稿时间： | 9/5/2009 12:00:00 AM |
Characteristics of Climate Change in the North China Plain for Recent 45 Years |
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| TAN Fangying,WANG Jianlin and SONG Yingbo.Characteristics of Climate Change in the North China Plain for Recent 45 Years[J].Meteorological Monthly,2010,36(5):40-45. |
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| Authors: | TAN Fangying WANG Jianlin and SONG Yingbo |
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| Affiliation: | National Meteorological Center, Beijing 100081;National Meteorological Center, Beijing 100081;National Meteorological Center, Beijing 100081 |
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| Abstract: | A statistical analysis of the temporal and spatial changes of mainly climatic elements over the North China Plain was conducted,based on the daily climatic data of 53 stations from 1961 to 2005 by using the trend analysis, and the jumping point of temperature was fixed by using the Mann-Kendall test method.It was found that the climate was warming up in the last 45 years,in particular in the 1990s.For annual precipitation,no significant trend was found on the basis of long-term change.Precipitation graduall... |
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| Keywords: | climatic elements characteristics of change the North China Plain |
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