| 青藏高原气候由暖干到暖湿时期的年代际变化特征研究 |
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| 引用本文： | 牛涛,刘洪利,宋燕,陈隆勋.青藏高原气候由暖干到暖湿时期的年代际变化特征研究[J].应用气象学报,2005,16(6):763-771. |
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| 作者姓名： | 牛涛 刘洪利 宋燕 陈隆勋 |
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| 作者单位： | 1.中国气象科学研究院中国气象局大气成分观测与服务中心 中国气象局大气化学重点开放实验室, 北京 100081 |
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| 基金项目： | 国家重点基础研究发展计划973计划课题(2004CB418302)，科技部科技基础性工作和社会公益研究专项项目(2003DIB3J120)，成都高原气象研究所高原气象开放基金课题项目共同资助 |
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| 摘 要： | 利用1961~1998年青藏高原123个气象台站常规地面观测资料，对近40年青藏高原地区的气候年代际变化特征进行分析。分析结果表明:20世纪80年代中后期青藏高原经历了一次气温、降水量、相对湿度显著增加的气候突变。以突变点为界，可以划分为两个时期，即从20世纪60年代初到80年代中后期，青藏高原为相对暖干时期，从20世纪80年代后期开始，青藏高原进入相对暖湿时期。由此，从气温、降水量、相对湿度的变化特征和突变理论上可以初步判断，20世纪80年代中后期青藏高原气候年代际变化实现了由暖干型向暖湿型的突变。青藏高原气温和降水突变早于相对湿度突变；青藏高原的增温、增湿现象主要发生在冬季；春季亦增温、增湿，但增幅小于冬季；夏季出现增温和略减湿现象；秋季为明显增温，但湿度无明显变化。
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| 关 键 词： | 青藏高原 气候特征 暖湿时期 年代际变化 |
| 收稿时间： | 2004-11-06 |
| 修稿时间： | 2005-08-24 |
Study on Decade Change of Climate Shift from Warm-dry Period to Warm-wet Period over Tibetan Plateau |
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| Niu Tao,Liu Hongli,Song Yan,Chen Longxun.Study on Decade Change of Climate Shift from Warm-dry Period to Warm-wet Period over Tibetan Plateau[J].Quarterly Journal of Applied Meteorology,2005,16(6):763-771. |
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| Authors: | Niu Tao Liu Hongli Song Yan Chen Longxun |
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| Affiliation: | 1.Key Laboratory for Atmospheric Chemistry, Center for Atmosphere Watch andServices, Chinese Academy of Meteorological Sciences, CMA, Beijing 1000812.Chinese Academy of Meteorological Sciences, Beijing 1000813.CMA Trainning Center, Beijing 100081 |
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| Abstract: | In terms of the yearly average data obtained from 123 routine meteorological observatories located over Tibetan Plateau,the decade characteristics of climate change over the Plateau in the recent 40 years are studied.It is found that in the mid-late 1980s,an evident climatic sudden change happens to yearly average temperature rainfall and relative humidity,featured by the increasing of them.The climate of the Plateau shifts to warm-wet period from warm-dry period at the sudden turning point.The climatic sudden change of temperature and rainfall are earlier than that of relative humidity over the target region.Over the Plateau,the increases in temperature and humidity occur mainly in winter and these increases,also occuring in spring,show slow range;increase of temperature and somewhat lowered humidity happen in summer;autumn is a season for remarkable increase of temperature but humidity shows no tendency of its change. |
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| Keywords: | Tibetan Plateau Climate characteristics Warm-wet period Decade change |
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