| 晚春初夏西太平洋副高突变特征及其年际变化 |
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| 引用本文： | 舒廷飞,罗会邦.晚春初夏西太平洋副高突变特征及其年际变化[J].热带气象学报,2003,19(1):17-26. |
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| 作者姓名： | 舒廷飞 罗会邦 |
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| 作者单位： | 中山大学环境科学与工程学院,广东,广州,510275 |
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| 基金项目： | 国家自然科学研究基金重点项目(太平洋-印度洋ENSO模同亚洲季风的相互作用及机理研究)的资助 |
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| 摘 要： | 根据热带印度洋和热带太平洋(22.5 S～22.5 N,42.5 E～77.5 W )1951～1995年逐月5 ×5 的海面温度距平资料,首先进行了海面温度距平的平均功率谱分析,获取赤道印度洋和赤道太平洋海面平均温度距平存在准12年和准4年的周期变化;然后,利用多维时间序列的交叉谱分析,进一步分别分析了赤道印度洋和赤道太平洋各格点上海面温度距平在准12年和准4年演变周期各格点之间的演变位相及演变落后时间,获得一些有意义的结论。
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| 关 键 词： | 热带印度洋 热带太平洋 海面温度 海温振荡规律 谱分析 |
| 文章编号： | 1004-4965(2003)01-0009-08 |
| 收稿时间： | 2001/5/28 0:00:00 |
| 修稿时间： | 2001/9/10 0:00:00 |
ABRUPT CHANGE OF THE WEST PACIFIC SUBTROPICAL HIGH AND ITS INTERANNUAL VARIATION DURING THE LATER SPRING AND EARLY SUMMER |
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| SHU Ting-fei and LUO Hui-bang.ABRUPT CHANGE OF THE WEST PACIFIC SUBTROPICAL HIGH AND ITS INTERANNUAL VARIATION DURING THE LATER SPRING AND EARLY SUMMER[J].Journal of Tropical Meteorology,2003,19(1):17-26. |
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| Authors: | SHU Ting-fei and LUO Hui-bang |
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| Institution: | The Environment Science and Engineering School, Zhongshan University, Guangzhou 510275, China;The Environment Science and Engineering School, Zhongshan University, Guangzhou 510275, China |
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| Abstract: | The 500 hPa geopotential height data used in this paper are from NCEP/NCAR data set for the period from 1979 to 1996(from March to July). Using pentad average, we define the intensity, the west point and mean latitude of the subtropical high ridge. Then the wavelet transform and EOF analysis are performed. It is found that there mainly exist three interseasonal abrupt change processes, and they correspond to the onset time of the South China Sea Summer Monsoon (SCSSM), the beginning and the end of the mei-yu respectively. The interannual variation of the subtropical high in late spring and early summer presents quasi-4-year and 8-year periods. |
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| Keywords: | tropical India Ocean tropical Pacific sea surface temperature anomaly power spectral analysis |
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