| 用南亚高压和西太副高的周期关系做多雨时段的预报研究 |
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| 引用本文： | 赵改英,刘冰,齐收金.用南亚高压和西太副高的周期关系做多雨时段的预报研究[J].高原气象,2000,19(2):172-178. |
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| 作者姓名： | 赵改英 刘冰 齐收金 |
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| 作者单位： | 1. 陕西省气象台,陕西省西安市,710015
2. 西安卫星测控中心,陕西省西安市,710043 |
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| 摘 要： | 对１００ｈＰａ南亚高压的振荡指数及５００ｈＰａ西太平洋副高的强度指数、西进指数进行了谱分析，着重考察了５天到一个月的振荡周期。通过分析得出，南亚高压的显著周期主要是准两周周期，西太平洋副高的显著周期主要是准一周周期，其次是准 两周周期；在多数情况下，南亚高压东进比西太平洋副高西伸加强提前１￣２天；南亚高压的显著周期与西太平洋副高的显著周期叠加时，陕西地区可出现多雨时段。
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| 关 键 词： | 南亚高压 西太平洋副高 周期 降水预报 多雨时段 |
| 修稿时间： | 1998-09-09 |
APPLICATION OF PERIOD RELATION BETWEEN SAH AND WPSH TO FORECASTING SHAANXI RAINY SPELLS SUMMER |
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| ZHAO Gai-ying,LIU Bing,QI Shou-jin.APPLICATION OF PERIOD RELATION BETWEEN SAH AND WPSH TO FORECASTING SHAANXI RAINY SPELLS SUMMER[J].Plateau Meteorology,2000,19(2):172-178. |
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| Authors: | ZHAO Gai-ying LIU Bing QI Shou-jin |
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| Abstract: | In this paper, spectral analyses of both the oscillation index of the South Asia High(SAH) in 100 hPa and the index of extending westward of the West Pacific Subtropical High(WPSH) in 500 hPa have firstly been done. The results show that the oscillation of the SAH has mainly a quasi biweek period; the WPSH, a quasi week one. Usually, when the SAH moves eastward, the WPSH extends westward, the former occurs mostly one to two days earlier than the latter. Also when the periods of both the SAH and WPSH meet together, there is rainy spells in Shaanxi Province summer. |
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| Keywords: | South Asia High West Pacific Subtropical High Spectrum analysis Period |
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