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ENSO modulations due to interannual variability of freshwater forcing and ocean biology-induced heating in the tropical Pacific
Zhang, R.-H.; Gao, C.; Kang, X.; Zhi, H.; Wang, Z.; Feng, L. (2015). ENSO modulations due to interannual variability of freshwater forcing and ocean biology-induced heating in the tropical Pacific. NPG Scientific Reports 5(18506): 11 pp. hdl.handle.net/10.1038/srep18506
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Zhang, R.-H.
  • Gao, C.
  • Kang, X.
  • Zhi, H.
  • Wang, Z.
  • Feng, L.

Abstract
    Recent studies have identified clear climate feedbacks associated with interannual variations in freshwater forcing (FWF) and ocean biology-induced heating (OBH) in the tropical Pacific. The interrelationships among the related anomaly fields are analyzed using hybrid coupled model (HCM) simulations to illustrate their combined roles in modulating the El Niño-Southern Oscillation (ENSO). The HCM-based supporting experiments are performed to isolate the related feedbacks, with interannually varying FWF and OBH being represented individually or collectively, which allows their effects to be examined in a clear way. It is demonstrated that the interannual freshwater forcing enhances ENSO variability and slightly prolongs the simulated ENSO period, while the interannual OBH reduces ENSO variability and slightly shortens the ENSO period, with their feedback effects tending to counteract each other.

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