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Advances in Atmospheric Sciences

, Volume 18, Issue 5, pp 1029–1042 | Cite as

The Impact of Pacific SST A on the lnterannual Variability of Northern Pacific Storm Track during Winter

  • Zhu Weijun
  • Sun Zhaobo
  • Zhou Bing
Article

Abstract

Investigation is conducted of the interannual variability of the northern Pacific storm track and its concurrent association with 500 hPa height and Pacific sea surface temperature (SST) during winter. Evidence suggests that during the studying period the center of the northern winter Pacific storm track experiences substantial interannual variability in the variation of its latitude, longitude and intensity. Singular value decomposition (SVD) of 15 winter 500 hPa filtered geopotential height variance over the storm track with the tropical and northern Pacific SST shows that the first coupled mode depicts the effect on the track of SST A over the equatorial central and eastern Pacific, while the second one reflects the impact of Kuroshio SSTA on the track. Further Composite analysis indicates, moreover, that the SSTA over Kuroshio (equatorial central and eastern Pacific) during winter, which is relative to WP (PNA) teleconnection response pattern in 500 hPa height field, respectively, exerts crucial influence on the interannual variability in vigor and meridianal (zonal) displacement of the track over its central and western (eastern) part.

Key words

Storm track Interannual variability SVD analysis Teleconnection pattern 

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Copyright information

© Advances in Atmospheric Sciences 2001

Authors and Affiliations

  • Zhu Weijun
    • 1
  • Sun Zhaobo
    • 1
  • Zhou Bing
    • 2
  1. 1.Nanjing Institute of MeteorologyNanjingChina
  2. 2.LASG, Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina

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