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| 54年来中国西北地区降水量的变化 | |
| 引用本文： | 郭慕萍,王志伟,秦爱民,范永铃.54年来中国西北地区降水量的变化[J].干旱区研究,2009,26(1). |
| 作者姓名： | 郭慕萍 王志伟 秦爱民 范永铃 |
| 作者单位： | 1. 西北农林科技大学,陕西,杨陵,712100;中国气象局,兰州干旱气象研究所,甘肃,兰州,730020;山西省气候中心,山西,太原,030006 2. 山西省气象科学研究所,山西,太原,030002 3. 山西省气象科技服务中心,山西,太原,030002 |
| 基金项目： | 科技部科研院所社会公益研究专项基金 |
| 摘 要： | 利用国家气候中心提供的743个站的逐日降水资料,选取西北5省(区)资料年代长度大于30年的166个站的逐日降水资料.通过计算分析西北地区年和各季节的降水量距平百分率、年降水日数、年降水强度.发现近54年来,我国西北5省(区)总降水量呈下降趋势,距平为正和负值的年份大致相当,年际间振幅较大,降水日数明显减少,降水强度有弱的增强趋势. |
| 关 键 词： | 降水量 距平百分率 西北地区 中国 |
Changes in Precipitation in Northwest China Over the Last 54 Years |
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| GUO Mu-pin,WANG Zhi-wei,QIN Ai-min,FAN Yong-ling.Changes in Precipitation in Northwest China Over the Last 54 Years[J].Arid Zone Research,2009,26(1). | |
| Authors: | GUO Mu-pin WANG Zhi-wei QIN Ai-min FAN Yong-ling |
| Institution: | 1.Northwest A & F University;Yangling;712100;2.Lanzhou Institute of Arid Meteorology;China Meteorological Administration;Lanzhou 730020;China;3.Shanxi Province Climate Centre;Taiyuan 030006;4.Shanxi Province Institute of Meteorological Science;Taiyuan 030002;5.Shanxi Province Centre for Meteorological Science and Technology Service;China |
| Abstract: | In this study,the changes in the precipitation anomaly,rain days and precipitation intensity in northwest China over the last 54 years were calculated and analyzed using the daily precipitation data observed at 166 meteorological stations in 5 provinces in northwest China.The results of the study were as follows:(1) Annual precipitation in northwest China has been decreasing for the last 54 years,but its positive anomaly years are almost equal to its negative anomaly years.The range of inter-annual precipit... |
| Keywords: | precipitation precipitation anomaly rainy day precipitation intensity |
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