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Influence of enso event on the maintenance of pacific storm track in the northern winter
Authors:Zhu Weijun  Sun Zhaobo
Affiliation:Nanjing Institute cf Meteorology, Nanjing 210044,Nanjing Institute cf Meteorology, Nanjing 210044
Abstract:An influence of ENSO event on the maintenance of Pacific storm track in the Northern winter is studied based on the NCEP/ NCAR daily re-analysis data. The result shows that in El Niño (La Niña) year an increase (decrease) of baroclinicity over the storm track, extension (withdrawal) eastward and southward (westward but northward for its east end) of its position and augmentation (debilitation) of its strength are closely in response to the enhancement (abatement) of eddy heat flux and momentum flux that are associated with the development of the storm track. It thus indicates that ENSO event exerts an important impact on its maintenance and development in the Pacific Ocean.
Keywords:ENSO   Storm track   Baroclinicity
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