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| 初春青藏高原地表温度变化对长江中下游降水的影响 | |
| 引用本文： | 何冬燕,邓学良,赵勇.初春青藏高原地表温度变化对长江中下游降水的影响[J].高原气象,2010,29(3):579-586. |
| 作者姓名： | 何冬燕 邓学良 赵勇 |
| 作者单位： | 1. 安徽省气候中心,安徽,合肥,230031 2. 安徽省气象科学研究所/安徽省大气科学与卫星遥感重点实验室,安徽,合肥,230031 3. 中国气象局乌鲁木齐沙漠气象研究所,新疆,乌鲁木齐,830002 |
| 基金项目： | 2009年度武汉区域气象中心科技发展基金重点项目 |
| 摘 要： | 基于NCEP/NCAR再分析资料及全国160个测站降水资料,分析了2～3月青藏高原地表温度升温幅度与6月长江中下游地区降水的关系。结果表明:青藏高原2～3月地表温度升温幅度的主空间分布型为边缘升温大、中心升温小,低海拔大、高海拔小。这种升温形势与长江中下游南部降水呈明显的负相关关系:在升温幅度大的年份,长江中下游南部降水较常年偏少;而升温幅度小的年份,长江中下游南部降水明显增加。进一步分析表明,升温弱年大气环流的形势和各种天气系统的配置为长江中下游南部降水提供了更有利的水汽、动力及热力条件,其中100 hPa南亚高压强度整体偏强并向东西方向伸展,500 hPa极涡增强偏东、贝加尔湖及鄂霍次克海之间大脊增强及西太平洋副热带高压西伸是降水增加的主要原因。 |
| 关 键 词： | 青藏高原 地表温度 长江中下游 降水 |
Effect of Surface Temperature Variation of Tibetan Plateau in Early Spring on the Precipitation in Mid- and Lower-Reaches of Yangtze River |
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| HE Dong-yan,DENG Xue-liang,ZHAO Yong.Effect of Surface Temperature Variation of Tibetan Plateau in Early Spring on the Precipitation in Mid- and Lower-Reaches of Yangtze River[J].Plateau Meteorology,2010,29(3):579-586. | |
| Authors: | HE Dong-yan DENG Xue-liang ZHAO Yong |
| Affiliation: | HE Dong-yan1,DENG Xue-liang2,ZHAO Yong3(1.Anhui Climate Centre,Anhui Province,Hefei 230031,China,2.Anhui Institute of Meteorology,Key Laboratory of Atmospheric Science and Satellite Remote Sensing,3.Institute of Desert Meteorology,China Meteorological Administration,Urumqi 830002,China) |
| Abstract: | Based on NCEP/NCAR reanalysis data and precipitation data of 160 stations in China,the correlation between variations of surface temperature in the Tibetan Plateau(TP) from February to March and precipitation in the mid-and lower-reaches of Yangtze River in June has been studied.The results show that the main spatial distribution of the increamen of surface temperature in TP from February to March is higher in its edge and lower in its center,but highter in low sea level elevation and vice versa.There is ob... |
| Keywords: | Tibetan Plateau Surface temperature The mid-and lower-reaches of Yangtze River Precipitation |
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