| 德国4站点极端降水频数和强度趋势变化分析 |
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| 引用本文： | 杨靖文,孙即霖,Reiner Schlitzer.德国4站点极端降水频数和强度趋势变化分析[J].中国海洋大学学报(自然科学版),2010(Z1). |
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| 作者姓名： | 杨靖文 孙即霖 Reiner Schlitzer |
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| 作者单位： | 中国海洋大学海洋气象系海洋-大气相互作用与气候实验室;Alfred Wegener Institute; |
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| 基金项目： | 国家自然科学基金项目(40676012)资助 |
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| 摘 要： | 根据不莱梅、波茨坦、卡尔斯鲁厄和楚格峰1901—2007年逐日降水量分析了各站极端降水的频数和强度趋势变化。结果表明:山区(楚格峰)出现的极端降水数量呈上升趋势,且强度显著增强,在冬、夏2季亦如此。这与全球变暖背景下,山区的积雪融化导致对流活动增强以及大气环流影响水汽输送增强有关;在超过绝对阈值的极端降水方面,北方地区(不莱梅和波茨坦)发生频数保持稳定,无显著趋势变化,南方地区(卡尔斯鲁厄)有显著减少的趋势,且不莱梅的频数变化趋势与波茨坦相似,具有强正相关,而此2站与卡尔斯鲁厄的频数变化趋势呈反位相,有较强的负相关;除楚格峰外,极端降水强度变化无显著趋势。低海拔地区在冬季极端降水的频数和强度上,大部分有显著上升的趋势,而夏季,在2方面均出现不同程度的下降;极端降水频数和强度呈强正相关。
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| 关 键 词： | 极端降水 频数 强度 趋势变化 |
Trends in Frequency and Intensity of Extreme Precipitation at Four German Stations |
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| YANG Jing-Wen,SUN Ji-Lin,Reiner Schlitzer,Ocean University of China,Qingdao ,China,.Alfred Wegener Institute,Bremerhaven ,Germany.Trends in Frequency and Intensity of Extreme Precipitation at Four German Stations[J].Periodical of Ocean University of China,2010(Z1). |
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| Authors: | YANG Jing-Wen SUN Ji-Lin Reiner Schlitzer Ocean University of China Qingdao China Alfred Wegener Institute Bremerhaven Germany |
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| Institution: | YANG Jing-Wen1,SUN Ji-Lin1,Reiner Schlitzer2(1.Ocean-Atmosphere Interaction and Climate Laboratory(OAC),Ocean University of China,Qingdao 266100,China,2.Alfred Wegener Institute,Bremerhaven 27568,Germany) |
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| Abstract: | Based on daily precipitation at Bremen,Potsdam,Karlsruhe and Zugspitze from 1901 to 2007,trend variation in frequency and intensity of extreme precipitation for each station is analyzed.It is found that: 1) alpine area(Zugspitze) has more and more extreme precipitation and the intensity increases.It is the same in summer and winter.The increases are resulted from enhanced convection caused by snow melting and plenty of water vapor transport affected by circulation,under the background of global warming.2) A... |
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| Keywords: | extreme precipitation frequency intensity trends variation |
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