| 1960-2009年大连市气候暖干化研究 |
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| 引用本文： | 崔利芳,任学慧.1960-2009年大连市气候暖干化研究[J].干旱区资源与环境,2012(9):26-32. |
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| 作者姓名： | 崔利芳 任学慧 |
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| 作者单位： | 辽宁师范大学城市与环境学院 |
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| 基金项目： | 国家自然科学基金项目(40971294)资助 |
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| 摘 要： | 利用大连市1960-2009年气温和降水两个主要气象要素值的基本观测资料,运用线性倾向估计和GIS空间分析方法,探讨了大连气候的年际时空变化,同时利用Mann-Kendall统计检验和Morlet小波分析对其气候的年代际和周期性变化进行了分析。结果表明:近50a来大连市气候暖干化日趋明显,年平均气温以0.28℃/10a的速率显著上升,并且在1991年发生突变进入异常增暖期,空间上增暖趋势大致呈由南向东北逐渐减弱的态势;降水量基本经历了"减少-增加-减少-增加"的变化过程,总体上呈下降趋势,在1972年降水量由偏多向偏少转变,东北和西南地区降幅较大,腹地最小。此外,气候的暖干化趋势对"自然-社会-经济"复合系统造成的影响应引起重视。
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| 关 键 词： | 气候变化 Mann-Kendall检验 Morlet小波分析 大连市 |
Research on warming and drying climate in Dalian city during 1960-2009 |
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| CUI Lifang,REN Xuehui.Research on warming and drying climate in Dalian city during 1960-2009[J].Journal of Arid Land Resources and Environment,2012(9):26-32. |
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| Authors: | CUI Lifang REN Xuehui |
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| Institution: | (Scholl of Urban and Environment,Liaoning Normal University,Dalian,Liaoning 116029,P.R.China) |
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| Abstract: | The goal of the research is to analyze the spatial and temporal change of climate by linear trend method and GIS spatial analysis based on temperature and precipitation data during 1960-2009 in Dalian.Inter-decadal and periodic variation were investigated by Mann-Kendall statistical test and wavelet analysis.The results indicated that(1) annually mean temperature increased significantly with the rate of 0.28℃/10a in recent 50 years,and climate warming was abnormally since 1991.In space,warming tendency gradually weakened from south to northeast;(2) Precipitation basically underwent the process of "decreasing-increasing-decreasing-increasing" and generally descended.The change was significant since 1972.Decreasing amplitude was bigger in northeast and southwest,yet smaller in interior;(3) We should pay attentions to problems of nature,society and economy caused by warming and drying of climate. |
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| Keywords: | Climate change Mann-Kendall test Morlet wavelet analysis Dalian city |
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