| 1860-2005年伊塞克湖水位波动与区域气候水文变化的关系 |
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| 引用本文： | 王国亚,沈永平,秦大河.1860-2005年伊塞克湖水位波动与区域气候水文变化的关系[J].冰川冻土,2006,28(6):854-860. |
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| 作者姓名： | 王国亚 沈永平 秦大河 |
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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,冰冻圈与环境联合重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 中国科学院知识创新工程项目
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中国科学院知识创新工程项目
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中国沙漠气象科研项目
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中国科学院知识创新工程项目 |
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| 摘 要： | 应用吉尔吉斯坦天山伊塞克湖1860—2005年的湖水位资料及土尤克苏冰川雪线和卡拉库里气象站1879-1998年的观测资料,分析了伊塞克湖145 a来水位波动的主要原因及区域气候变化特征,并与中国新疆天山地区的博斯腾湖及1号冰川雪线变化进行了比较.结果表明:天山伊塞克湖地区近百年来气候一直处于暖干化过程,1986年以后气候有转向暖湿的迹象.这种现象是与我国西北气候由暖干向暖湿转型相对应的,是转型在空间上的向西扩展.分析认为,气候变化的暖湿转型原因主要是全球变暖导致全球水循环速度加快,西风环流和印度洋环流带来的水汽含量增加,导致了该区降水量增加;也与气候变暖使局地蒸发量加大,降水机会增多而引起降水量增加等因素有关.
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| 关 键 词： | 伊塞克湖 湖水位变化 冰川雪线 气候变暖 气候转型 |
| 文章编号： | 1000-0240(2006)06-0854-07 |
| 收稿时间： | 09 8 2006 12:00AM |
| 修稿时间： | 10 28 2006 12:00AM |
Issyk-Kul Lake Level Fluctuation during 1860-2005 and Its Relation with Regional Climatic and Hydrological Changes |
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| WANG Guo-ya,SHEN Yong-ping,QIN Da-he.Issyk-Kul Lake Level Fluctuation during 1860-2005 and Its Relation with Regional Climatic and Hydrological Changes[J].Journal of Glaciology and Geocryology,2006,28(6):854-860. |
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| Authors: | WANG Guo-ya SHEN Yong-ping QIN Da-he |
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| Institution: | Key Laboratory of Cryosphere and Environment ,CAREERI,CAS,Lanzhou Gansu 730000,China |
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| Abstract: | The data of Issyk-Kul Lake level from 1860 to 2005 and the Tuyuksu Glacier snowline and air temperature in Karakol Station from 1879 to 1998 were analyzed,and the relationship between lake level fluctuation and regional climate change was revealed in the Issyk-Kul region over the past 145 years.It is found that a cold-humid climate occurred in the end of 19~th and the beginning of 20th century,a cold-dry climate occurred from 1915 to 1962,and a warm-dry climate occurred from 1963 to 1986.The changes of lake level and glacier snowline indicated that the climate has shifted to warm-humid since 1986.By comparing the lake level of Issyk-Kul with Bosten Lake level,and the snowline altitudes of Tuyuksu Glacier with that of Glacier No.1,it is expected that the warm-humid climate will extend westwards from Northwest China to Issyk-Kul area.It is believed that this is a result of water cycle accelerating due to global warming.The increases of water vapor transported by westerly and Indian Ocean circulation or regional evaporation will result in precipitation increasing. |
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| Keywords: | Issyk-Kul lake level snowline climate change climatic shift |
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