| 冬季黑潮区域海温异常对北太平洋风暴轴的影响 |
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| 引用本文： | 朱伟军,孙照渤.冬季黑潮区域海温异常对北太平洋风暴轴的影响[J].应用气象学报,2000,11(2):145-153. |
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| 作者姓名： | 朱伟军 孙照渤 |
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| 作者单位： | 南京气象学院, 南京 210044 |
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| 基金项目： | 国家自然科学基金!49475258项目资助 |
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| 摘 要： | 该文对15个冬季北太平洋风暴轴区域500 hPa天气尺度滤波位势高度方差与北太平洋海表温度进行了奇异值分解 (SVD) 分析.结果表明, SVD得到的第二对空间典型分布反映了冬季黑潮区域的海温异常与风暴轴的异常变化密切相关.进一步的分析显示, 黑潮区域海温异常可能通过加强风暴轴入口区的斜压性, 激发或加强500 hPa高度场上的WP遥相关型, 主要影响冬季北太平洋风暴轴在入口区的强度变化和南北位移.
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| 关 键 词： | 风暴轴 奇异值分解分析 斜压性 遥相关型 |
| 收稿时间： | 1998-12-01 |
| 修稿时间： | 1998-12-01 |
Impacts of Kuroshio SSTA on Storm Track over North Pacific in Winter |
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| Zhu Weijun,Sun Zhaobo.Impacts of Kuroshio SSTA on Storm Track over North Pacific in Winter[J].Quarterly Journal of Applied Meteorology,2000,11(2):145-153. |
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| Authors: | Zhu Weijun Sun Zhaobo |
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| Affiliation: | Nanjing Institute of Meteorology, Nanjing 210044 |
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| Abstract: | Singular value decomposition(SVD)is
conducted for 500 hPa filtered potential height variance of 15 storm track regions and the
SST over North Pacific in winter .The results show that the second couple of mode obtained
from SVD depicts the effect of Kuroshio SSTA on the interannual variability of
storm.Furthermore, composite analysis indicates that the SSTA over Kuroshio in winter can
give rise to or invigorate WP teleconnection response pattern of 500 hPa height field
which,in turn,exerts crucial influence on the interannual variability in vigor and
meridianal displacement of the storm track over North Pacific,especially over its central
and western parts. |
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| Keywords: | Storm track Singular value decomposition analysis Baroclinicity Teleconnection pattern |
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