| 新疆达坂城地区52a来气温和降水变化特征分析 |
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| 引用本文： | 任泉,蔡新婷,马文惠.新疆达坂城地区52a来气温和降水变化特征分析[J].干旱区资源与环境,2011(10):116-121. |
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| 作者姓名： | 任泉 蔡新婷 马文惠 |
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| 作者单位： | 乌鲁木齐市气象站;乌鲁木齐市达坂城气象站 |
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| 摘 要： | 根据乌鲁木齐市达坂城气象站（1958—2009）的气温和降水资料，利用线性趋势函数及滑动平均法分析了气温和降水的变化趋势，并用Morlet小波变换对年气温和年降水量进行了小波分析。结果表明：近52a来达坂城地区年平均气温、平均日最高气温、平均日最低气温及春、夏、秋、冬季气温均呈上升趋势，其中90年代以来是气温上升最显著...
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| 关 键 词： | 达坂城 气温 降水 变化特征 Morlet小波分析 |
Changing features of temperature and precipitation in recent 52 years in Dabancheng region |
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| REN Quan,CAI Xinting,MA Wenhui.Changing features of temperature and precipitation in recent 52 years in Dabancheng region[J].Journal of Arid Land Resources and Environment,2011(10):116-121. |
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| Authors: | REN Quan CAI Xinting MA Wenhui |
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| Institution: | 1 ( 1. Urumqi Weather Station,Urumqi 830002,P. R. China; 2. Dabancheng Weather Station,Urumqi 830039,P. R. China) |
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| Abstract: | In accordance with the climate and anticipation information gained from Dabancheng Weather Station ( 1958 -2009) in Urumqi,by using linear tendency function and glide average method,the change trends of temperature and precipitation were analyzed. Meanwhile,Morlet wavelet transformation was adopted to conduct the wavelet analysis for the annual temperature and precipitation . The results indicated that in the recent 52 years the average temperature,maximum/minimum daily average temperature and the temperature in four seasons showed an increasing trends. Such trend was the most significant in 1990s. The growth of minimum daily average temperature was much more than that of the maximum daily average temperature. The elevation of temperature was obvious in autumn and winter. Annual average precipitation and the precipitation in spring,summer,au- tumn,and winter showed a significant increase since 1980s. Except spring,the precipitation in other seasons all revealed an increasing trend. Viewing from the linear fitting,the increasing trend of precipitation in summer was the most obvious. Wavelet analysis implied that the temperature and precipitation in Dabancheng showed a peri- odic change with a period of 2 - 24 years. Moreover,in the next few years,Dabancheng will still get warmer while the precipitation will reduce relatively. |
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| Keywords: | Dabancheng temperature precipitation changing feature Morlet Wavelet Analysis |
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