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Article: Westerly Wind Bursts and Their Relationship with Intraseasonal Variations and ENSO. Part I: Statistics
- Article from:
- Monthly Weather Review
- Article date:
- October 1, 2007
- Author:
CopyrightCopyright American Meteorological Society Oct 2007. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
Statistical features of the relationship among westerly wind bursts (WWBs), the El Niño-Southern Oscillation (ENSO), and intraseasonal variations (ISVs) were examined using 40-yr European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis data (ERA-40) for the period of January 1979-August 2002. WWBs were detected over the Indian Ocean and the Pacific Ocean, but not over the Atlantic Ocean. WWB frequencies for each region were lag correlated with a sea surface temperature anomaly over the Niño-3 region. WWBs tended to occur in sequence, from the western to eastern Pacific, leading the El Niño peak by 9 months to 1 month, respectively, and after around 11 months, over ...