RELATIONSHIP BETWEEN QINGHAI-XIZANG PLATEAU REGION MONSOON FEATURES AND ABNORMAL CLIMATE IN CHINA

Bai Huzhi; Ma Zhenfeng; Dong Wenjie

Vol.16, NO.4, 2005

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2005 > 16(4): 484-491

Bai Huzhi, Ma Zhenfeng, Dong Wenjie. Relationship between Qinghai-Xizang Plateau region monsoon features and abnormal climate in China. J Appl Meteor Sci, 2005, 16(4): 484-491.

Citation:

Bai Huzhi, Ma Zhenfeng, Dong Wenjie. Relationship between Qinghai-Xizang Plateau region monsoon features and abnormal climate in China. J Appl Meteor Sci, 2005, 16(4): 484-491.

Bai Huzhi, Ma Zhenfeng, Dong Wenjie. Relationship between Qinghai-Xizang Plateau region monsoon features and abnormal climate in China. J Appl Meteor Sci, 2005, 16(4): 484-491.

Citation:

Bai Huzhi, Ma Zhenfeng, Dong Wenjie. Relationship between Qinghai-Xizang Plateau region monsoon features and abnormal climate in China. J Appl Meteor Sci, 2005, 16(4): 484-491.

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RELATIONSHIP BETWEEN QINGHAI-XIZANG PLATEAU REGION MONSOON FEATURES AND ABNORMAL CLIMATE IN CHINA

1.
Lanz hou Central Meteorological Observatory, Lanzhou 730020
2.
Institution of Plateau Meteorology, CMA, Chengdu 610071
3.
National Climate Center, Beijing 100081

Received Date: 2004-06-08
Rev Recd Date: 2005-03-01
Publish Date: 2005-08-31

Abstract

Abstract

Time series of pentad mean 600 hPa height indices of Qinghai-Xizang Plateau region Monsoon features and derived from 1951—2000 NCEP/NCAR reanalysis of daily gridded data (2.5 °×2.5°), with which to investigate basic features and trends of Qinghai-Xizang Plateau high field index (QXPFI) on an interdecadal basis. Results indicate that the 600 hPa level is under the control of a low (high) in summer (winter), with the low tending to appear ahead of time and intensity progressively, on the whole, the annual variation in the indices is similar to that of the number of rainy days in Qinghai-Xizang Plateau. Moreover, correlation of QXPFI to the 160-station precipitation and air temperature in China shows that, on a simultaneous basis, the indices are significantly correlated to the precipitation as "﹣+﹣ " in zonal bands from northern to southern China, and the indices display a positive correlation with winter temperature, which is most significant over eastern edge of Qinghai-Xizang Plateau and South China.
- Qinghai-Xizang Plateau;
- 600 hPa high field features;
- Correlation analysis

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References(11)

Figures and Tables

图 1 1971~2000年青藏高原1月 (a)、7月 (b) 平均600 hPa高度场分布

(单位:dagpm, 虚线区为青藏高原地形)

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图 2 1971~2000年平均青藏高原高度场指数年变化

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图 3 青藏高原低压开始、结束时间的年际变化

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图 4 青藏高原高度场指数的年际变化

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图 5 1971~2000年青藏高原雨日 (降水≥0.1 mm) 年变化

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图 6 夏季青藏高原高度场指数与同期降水 (a)、气温 (b) 的相关分布

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图 7 冬季青藏高原高压强度指数与冬季气温相关

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表 1 青藏高原单站雨季和高原夏季风开始、结束时间

References

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