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Mohammad Tabrez Alam (author)Youmin Tang (thesis advisor)Chengbo Fu (chair)Peter Jackson (committee member)Jianbing Li (committee member)Ruping Mo (committee member)Liang Chen (committee member)University of Northern British Columbia Natural Resources & Environmental Studies (Degree granting institution)
Impact of westerly wind burst on El Niño-sourthern oscillation
Master of Science (MSc)
Natural Resources & Environmental Studies
1 online resource (ix, 72 pages)
Westerly wind bursts (WWBs), usually occurring in the tropical Pacific region, play a vital role in El Niño–Southern Oscillation (ENSO). In this study, we use a hybrid coupled model (HCM) for the tropical Pacific Ocean-atmosphere system to investigate WWBs impact on ENSO. To achieve this goal, two experiments are performed: (a) first, the standard version of the HCM is integrated for years without prescribed WWBs events; and (b) second, the WWBs are added into the HCM (HCM-WWBs). Results show that HCM-WWBs can generate not only more realistic climatology of sea surface temperature (SST) in both spatial structure and temporal amplitudes, but also better ENSO features, than the HCM. In particular, the HCM-WWBs can capture the central Pacific (CP) ENSO events, which is absent in original HCM. Furthermore, the possible physical mechanisms responsible for these improvements by WWBs are discussed.
El Niño Current.Climatology.Atmospheric circulation.Winds.Computer simulation.