| 青藏高原热力状况与四川盆地汛期降水的联系 |
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| 引用本文： | 叶月珍,方之芳.青藏高原热力状况与四川盆地汛期降水的联系[J].高原气象,1999,18(2):162-170. |
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| 作者姓名： | 叶月珍 方之芳 |
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| 作者单位： | 1. 重庆市气象局,重庆市,400039
2. 成都气象学院,四川省成都市,610041 |
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| 基金项目： | 四川省科委应用基础研究项目 |
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| 摘 要： | 应用高原积雪日数和高原气温、四川盆地逐月降水量资料，应用ＳＶＤ等方法，探讨高原热力状况分布异常与四川盆地汛期降水分布的联系。分析结果表明，高原积雪日数场分布特征是以巴颜喀拉山和念青唐古拉山为中心。该区域冬季积雪日数异常与川中盆地汛期干旱有相当好的联系。春季青藏高原北部和祁连山的温度场的大范围异常则与川西的洪涝和川东的干旱均有较好的相关，均可作为四川降水长期预报综合考虑的重要参考因子。一般而言，积雪
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| 关 键 词： | 青藏高原积雪 高原气温 四川汛期降水 长期预报 |
| 修稿时间： | 1998-02-26 |
THE RELATIONSHIP BETWEEN THERMAL REGIME IN QINGHAI-XIZANG PLATEAU AND PRECIPITATION IN SICHUAN BASIN DURING FLOOD SEASON |
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| YE Yue-Zhen,FANG Zhi-Fang.THE RELATIONSHIP BETWEEN THERMAL REGIME IN QINGHAI-XIZANG PLATEAU AND PRECIPITATION IN SICHUAN BASIN DURING FLOOD SEASON[J].Plateau Meteorology,1999,18(2):162-170. |
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| Authors: | YE Yue-Zhen FANG Zhi-Fang |
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| Abstract: | Based on the data set of the perpetual
snow duration and temperature in the Plateau and precipitation in Sichaun Basin. The
relationship between the thermal regime distribution in the Qinghai-Xizang Plateau and the
precipitation in the Sichuan Basin during the flood season was investigated using the
Singular Value Decomposition method. The results are as follows the distribution
character of the Plateau perpetual snow duration is that the centers are located in the
Bayanhar mountain and Nyainqêtanglha mountain. The anomaly in these area in winter
related to the precipitation in the middle part of Sichuan Basin during flood season.
There is close relationship between the large extent anomalies of the temperature in
Qaidam Basin and Qilian mountain and the flooding in the west part and the drought in the
east part of Sichuan Basin. The prepetual snow duration and the temperature in the Plateau
should be consider as the factor of the long forecasting for the precipitation in Sichuan.
In general,the period for prepetual snow bring atmospheric circulation and precipitation
into effect is longer than the temperature, because of snow melting and water into the
soil need long time. The August precipitation in Sichuan Basin obviously are affeced by
the snow and temperature in the Qinghai-Xizang Plateau. |
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| Keywords: | Plateau snow duration Plateau temperature Flood season precipitation in Sichuan Basin Long range forec asting |
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