| 京津冀地区近47 a降水量的变化特征 |
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| 引用本文： | 张健,章新平,王晓云,张剑明. 京津冀地区近47 a降水量的变化特征[J]. 干旱气象, 2009, 27(1) |
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| 作者姓名： | 张健 章新平 王晓云 张剑明 |
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| 作者单位： | 湖南师范大学资源与环境科学学院,湖南,长沙,410081;山东省青岛市气象局,山东,青岛,266003 |
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| 基金项目： | 国家自然科学基金，湖南省重点学科建设项目共同资助 |
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| 摘 要： | 利用线性回归、突变分析和小波分析方法,分析了京津冀地区1960~2006年84个地面台站降水量的变化.结果表明:47 a来京津冀降水量呈下降趋势,气候倾向率为-15 mm/10 a.除夏季外,其余季节降水量均呈增加趋势.由于华北地区夏季降水量集中了全年降水量的60%~70%,所以夏季降水量的显著减少使得年平均降水量呈下降趋势;京津冀地区夏季降水量在1990年代初发生突变,其他季节降水量无突变现象;年和4季降水量大致存在4个周期的变化.
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| 关 键 词： | 京津冀 降水 突变分析 小波分析 |
Climatic Variation of Precipitation in Beijing,Tianjin and Hebei in Recent 47 Years |
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| ZHANG Jian,ZHANG Xinping,WANG Xiaoyun,ZHANG Jianming. Climatic Variation of Precipitation in Beijing,Tianjin and Hebei in Recent 47 Years[J]. Journal of Arid Meteorology, 2009, 27(1) |
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| Authors: | ZHANG Jian ZHANG Xinping WANG Xiaoyun ZHANG Jianming |
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| Affiliation: | 1.College of Resources and Environment Sciences;Hu'nan Normal University;Changsha 410081;China;2.Qingdao Meteorological Bureau of Shandong Province;Qingdao 266003;China |
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| Abstract: | The change of precipitation at 84 meteorological stations in Beijing,Tianjin and Hebei in recent 47 years was analyzed by using linear regression,abrupt change analysis and wavelet analysis in this article.The results showed that annual precipitation decreased at a climatic tendency of-15 mm/10 a,and the 11-year running mean curve indicated the trend would continue in the future.Precipitation in summer was decreasing in most of the areas,while increasing in the other seasons.The abrupt change occurred in su... |
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| Keywords: | Beijing Tianjin and Hebei region precipitation abrupt change wavelet analysis |
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