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| ON THE KEY REGIONS OF 500 hPa GEOPOTENTIAL HEIGHTS OVER NORTHERN HEMISPHERE IN WINTER | |
| 作者姓名： | 严华生 万云霞 |
| 作者单位： | Department of Atmospheric Sciences, Yunnan University;Department of Atmospheric Sciences, Yunnan University;Yunnan Meteorology Bureau |
| 基金项目： | Key foundation project of Yunnan province (2003D00142); Natural Science Foundation of China (40065001) |
| 摘 要： | Variance analysis, correlation analysis and regression analysis methods are applied to analyze the
variation of circulation at 500 hPa. In winter, there are three regions (180°E – 150°W, 45°N – 60°N, 70°W – 100
°W，45°N – 75°N, 60°E – 100°E, 65°N – 80°N) whose variations are strong. Those regions are the key regions in
which atmospheric circulation can change. Those regions are correlated to some teleconnections and can present
a part of variations of 500 hPa to some degree. The linear contemporary correlation between those regions and the
height at 500 hPa is significant. Those regions can account for 88 % of variations of concurrent height at 500 hPa.
Those regions can present and forecast some variations to some degree in March and April. The longer the time
interval, the worse the forecast effect will be. The interannual variations of Q1, Q2 and the SST are weak in the
western Pacific. |
| 关 键 词： | Northern Hemisphere geopotential height field key regions |
ON THE KEY REGIONS OF 500 hPa GEOPOTENTIAL HEIGHTS OVER NORTHERN HEMISPHERE IN WINTER |
|
| YAN Hua-sheng and WAN Yun-xia.ON THE KEY REGIONS OF 500 hPa GEOPOTENTIAL HEIGHTS OVER NORTHERN HEMISPHERE IN WINTER[J].Journal of Tropical Meteorology,2005,11(1):23-30. | |
| Authors: | YAN Hua-sheng and WAN Yun-xia |
| Institution: | 1. Department of Atmospheric Sciences, Yunnan University, Kunming 650091 China 2. Department of Atmospheric Sciences, Yunnan University, Kunming 650091 China;Yunnan Meteorology Bureau, Kunming 650034 China 3. Yunnan Meteorology Bureau, Kunming 650034 China |
| Abstract: | Variance analysis, correlation analysis and regression analysis methods are applied to analyze the variation of circulation at 500 hPa. In winter, there are three regions (180°E - 150°W, 45°N - 60°N, 70°W - 100°W, 45°N - 75°N, 60°E - 100°E, 65°N - 80°N) whose variations are strong. Those regions are the key regions in which atmospheric circulation can change. Those regions are correlated to some teleconnections and can present a part of variations of 500 hPa to some degree. The linear contemporary correlation between those regions and the height at 500 hPa is significant. Those regions can account for 88 % of variations of concurrent height at 500 hPa. Those regions can present and forecast some variations to some degree in March and April. The longer the time interval, the worse the forecast effect will be. The interannual variations of Q1, Q2 and the SST are weak in the western Pacific. |
| Keywords: | Northern Hemisphere geopotential height field key regions |
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