| 青藏高原区域气候变化及其差异性研究 |
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| 引用本文： | 李林,陈晓光,王振宇,徐维新,唐红玉.青藏高原区域气候变化及其差异性研究[J].气候变化研究进展,2010,6(3):181-186. |
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| 作者姓名： | 李林 陈晓光 王振宇 徐维新 唐红玉 |
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| 作者单位： | 1. 青海省气候中心2. 青海省气象局3. 青海省气象局气候中心 |
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| 基金项目： | 中国气象局气候变化专项 |
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| 摘 要： | 利用1961—2007年青藏高原66个气象台站气温和降水量资料,通过典型气候分区,系统研究了近47年来青藏高原气温、降水量等气候因子时空演变规律,揭示了青藏高原不同区域气候变化的差异性。研究表明:近47年来,青藏高原的气候呈现出显著增暖趋势,年平均气温以0.37℃/10a的速率上升,气候变暖在夜间要较日间明显。冬季较其他季节明显,2月气温由冷向暖的转变最为显著,8月最不显著,且在某些区域有变冷迹象;高原边缘地区气候变暖要明显于高原腹地,青海北部区特别是柴达木盆地是青藏高原气候变化的敏感区。降水量总体表现出增多态势,气候倾向率达9.1mm/10a,但区域性差异较为明显,藏东南川西区是青藏高原降水量增多最显著的地区;12月至次年5月即冬春季整个青藏高原降水量随着气候变暖而增多,7月和9月黄河上游区1987年后干旱化趋势明显。
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| 关 键 词： | 气候变化 暖湿化 青藏高原 |
| 收稿时间： | 2009-9-14 |
| 修稿时间： | 2009-11-25
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Climate Change and Its Regional Differences over the Tibetan Plateau |
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| Li Lin,Chen Xiaoguang,Wang Zhenyu,Xu Weixin,Tang Hongyu.Climate Change and Its Regional Differences over the Tibetan Plateau[J].Advances in Climate Change,2010,6(3):181-186. |
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| Authors: | Li Lin Chen Xiaoguang Wang Zhenyu Xu Weixin Tang Hongyu |
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| Affiliation: | Qinghai Climate Center |
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| Abstract: | Using the meteorological observation data including temperature and precipitation at 66 stations over the Tibetan Plateau from 1961 to 2007, by means of the typical climate zoning, the spatio-temporal variations of climatic variables over the plateau in the recent 47 years were systematically studied, and the differences of climate change in different sub-regions were shown. The results indicate that the climate over the Tibetan Plateau overally showed a significant warming trend in the recent 47 years, the annual mean temperature rose at a rate of 0.37℃/10a; the warming was more remarkable in nighttime than in daytime, and in winter than in other seasons. The change from colder to warmer was the most significant in February, but the least in August, when climate showed a cooling trend in some areas. Climate warming at the edge of the plateau was more obvious than in the hinterland. The northern of Qinghai, especially the Qaidam Basin was a most sensitive area to climate change. Precipitation showed a rising trend at a tendency rate of 9.1 mm/10a; but regional differences were very apparent, the western of Sichuan, which lies in the southeast of Tibet, was the most significant in precipitation-increasing in the whole Tibetan Plateau; Precipitation in winter and spring (from December to May of the next year) in all areas increased with the climate warming; but the drought trend in the upstream of Yellow River was obvious after 1987. |
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| Keywords: | climate change warming and wetting Tibetan Plateau |
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