| 我国东北及邻近地区年平均气温异常及其对北半球气候变暖和欧亚雪盖面积的响应 |
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| 引用本文： | 侯依玲,李栋梁,施雅风,沈永平.我国东北及邻近地区年平均气温异常及其对北半球气候变暖和欧亚雪盖面积的响应[J].冰川冻土,2006,28(6):900-908. |
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| 作者姓名： | 侯依玲 李栋梁 施雅风 沈永平 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000;上海区域气候中心,上海,200030;中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000 |
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| 基金项目： | 国家科技部社科院所社会公益研究专项
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中国科学院所长基金 |
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| 摘 要： | 根据我国东北及邻近地区201个常规气象台站的年平均气温资料,利用EOF和分段线性拟合等方法分析了该地区气温异常的年代际特征及其对北半球气温和欧亚雪盖面积的响应.结果表明:我国东北及邻近地区年平均气温异常主要有全区一致型和南北反向型两种.近50 a来气温总体呈单调上升趋势,尤其是1990年代后期增温趋势更加明显,时间上东部早于西部.结合降水,1980年代起东北北部由冷干向暖湿转变,而华北区则由暖湿向暖干转变.东北北部升温单调、剧烈、显著,南部在1968和1985年曾两次发生突变,经历过1970-1980年代初的低温后增温趋势更加剧烈,其增温率几乎是第一次突变前的两倍.分析认为,我国东北及邻近地区大范围整体变暖与北半球平均气温的升高相一致;东北部气温的年际变化还受到欧亚雪盖面积的影响.
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| 关 键 词： | 东北及邻近地区 气温 年代际异常 气候转型 欧亚雪盖面积 |
| 文章编号： | 1000-0240(2006)06-0900-09 |
| 收稿时间： | 03 29 2006 12:00AM |
| 修稿时间： | 05 7 2006 12:00AM |
Variation of Annual Mean Temperature in Northeast of China and Its Responding to the Northern Hemisphere Warming and Snow Cover Area Changing in Eurasia |
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| HOU Yi-ling,LI Dong-liang,SHI Ya-feng,SHEN Yong-ping.Variation of Annual Mean Temperature in Northeast of China and Its Responding to the Northern Hemisphere Warming and Snow Cover Area Changing in Eurasia[J].Journal of Glaciology and Geocryology,2006,28(6):900-908. |
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| Authors: | HOU Yi-ling LI Dong-liang SHI Ya-feng SHEN Yong-ping |
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| Institution: | Cold and Arid Regions Environmental and Engineering Research Institute, Gansu Lanzhou 730000, China; 2. Shanghai Climate Center, Shanghai 200030, China |
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| Abstract: | The climatic decadal variation in Northeast China and its responding to the Northern Hemisphere warming and snow cover area changing in Eurasia are analyzed and studied by using the observational data of 195 stations in Northeast China and 6 stations in Mongolia with EOF analyses and the means of separated time interval linear fitting. The results show that there are two temperature changing pattern in the studied regions. One is the consistent pattern in all of their sub-regions and one is the spatially-opposite pattern between the north and the south. In the recent 50 years, the mean temperature in Northeast China performed the course the 1990s, showing Northeast China was warm-humid and the of increasing, especially in that the northern part of changing from cold-dry to North China was changing form warm-humid to warm-dry. It was found that the mean temperature had two abrupt events in 1968 and 1985 in the southern part, while it was increasing in evidence in the northern part of Northeast China. It is considered that the warming of Northeast China was according to the Northern Hemisphere warming, cover area changing in and also responded to snow Eurasia. |
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| Keywords: | Northeast China decadal variability of mean temperature shift of climate pattern snow cover area in Eurasia |
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