| 近50年中国冬季大地冷涡与春夏季干旱相关的统计 |
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| 引用本文： | 汤懋苍,张拥军,李栋梁.近50年中国冬季大地冷涡与春夏季干旱相关的统计[J].气象学报,2005,63(6):1006-1009. |
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| 作者姓名： | 汤懋苍 张拥军 李栋梁 |
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| 作者单位： | 1. 中国科学院寒区旱区环境与工程研究所,甘肃省干旱气候变化与减灾重点实验室,兰州,730000
2. 中国科学院寒区旱区环境与工程研究所,甘肃省干旱气候变化与减灾重点实验室,兰州,730000;中国科学院研究生院,北京,100039 |
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| 基金项目： | 国家科技部科研院所社会公益研究项目“中国干旱气象灾害监测预警方法研究”(2004DIB5J192) |
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| 摘 要： | 通过对冬季大地冷涡与春夏季干旱的相关分析,发现:除高原主体外,冬季的大地冷涡对应着春夏季为干旱少雨区;而且大地冷涡东面的地冷涡绝大多数也是春夏季的干旱少雨区。冬季大地冷涡在中国的出现频率为80%,可作为短期气候预测的重要因子。
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| 关 键 词： | 冬季大地冷涡 春夏季干旱 短期气候预测 |
| 收稿时间： | 3/8/2005 12:00:00 AM |
| 修稿时间： | 2005年3月8日 |
THE RELATIONSHIP OF BIG UNDERGROUND COLD VORTEX IN
WINTER AND THE DROUGHT IN SPRING AND SUMMER
DURING THE LAST 50 YEARS |
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| Tang Maocang,Zhang Yongjun and Li Dongliang.THE RELATIONSHIP OF BIG UNDERGROUND COLD VORTEX IN
WINTER AND THE DROUGHT IN SPRING AND SUMMER
DURING THE LAST 50 YEARS[J].Acta Meteorologica Sinica,2005,63(6):1006-1009. |
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| Authors: | Tang Maocang Zhang Yongjun and Li Dongliang |
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| Institution: | Cold and Arid Regions Environmental and Engineering Research Institute,
Chinese Academy of Science,
Key Laboratory of Arid Climatic Change and Reducing Disaster, Lanzhou 730000;Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academyof Science, Key Laboratory of Arid Climatic Change and Reducing Disaster,Lanzhou 730000;
Graduate School of Chinese Academy of Science, Beijing 100039;Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Science,
Key Laboratory of Arid Climatic Change and Reducing Disaster, Lanzhou 730000 |
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| Abstract: | The underground cold thermal vortex has not been analyzed in past studies.In fact,both the thermal vortex and the cold vortex are the conflict entities,just like the low-pressure system(the cyclone) and the high-pressure system(the counter cyclone) in the synoptic map.The warm vortex and the cyclone are initiative for the weather and climate change;on the contrary,the cold vortex and the anticyclone are regarded as the passivity.The cold vortex area is much larger than the warm one,and the biggest cold vortex area is above 2,000 thousands km~2 normally.The correlation of the cold vortex and the drought is very high,and so it is important to predict the rainfall in flood season.The relationship of big underground cold vortex in winter and the drought in spring and summer during the last 50 years was discussed.By analyzing the big underground cold vortex in winter and drought in spring and summer,the result shows that except the main body of the Tibetan Plateau,the regions of the big underground cold vortex in winter would be dry in spring and summer,and the underground cold vortex at the catchment's area of the big underground vortex is almost the same.The frequency of the big underground cold vortex in China is 80%,and so it is important for the short-term climate predicting. |
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| Keywords: | Big underground cold vortex in winter Drought in spring and summer Short-term climate predicting |
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