Show simple item record

dc.contributor.authorGierach, Michelle M.  Concept link
dc.contributor.authorMessie, Monique  Concept link
dc.contributor.authorKarnauskas, Kristopher B.  Concept link
dc.contributor.authorRadenac, Marie-Helene  Concept link
dc.date.accessioned2014-03-18T14:58:55Z
dc.date.available2014-10-22T08:57:25Z
dc.date.issued2013-10-29
dc.identifier.citationGeophysical Research Letters 40 (2013): 5473–5479en_US
dc.identifier.urihttps://hdl.handle.net/1912/6497
dc.descriptionAuthor Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 40 (2013): 5473–5479, doi:10.1002/2013GL057828.en_US
dc.description.abstractThe biological response in the western equatorial Pacific Ocean during El Niño/La Niña transitions and the underlying physical mechanisms were investigated. A chlorophyll a bloom was observed near the Gilbert Islands during the 2010 El Niño/La Niña transition, whereas no bloom was observed during the 2007 El Niño/La Niña transition. Compared to the previously observed bloom during the 1998 El Niño/La Niña transition, the 2010 bloom was weaker, lagged by 1–2 months, and was displaced eastward by ~200 km. Analysis suggested that the occurrence, magnitude, timing, and spatial pattern of the blooms were controlled by two factors: easterly winds in the western equatorial Pacific during the transition to La Niña and the associated island mass effect that enhanced vertical processes (upwelling and vertical mixing), and the preconditioning of the thermocline depth and barrier layer thickness by the preceding El Niño that regulated the efficiency of the vertical processes. Despite the similar strength of easterly winds in the western equatorial Pacific during the 1998 and 2010 transitions to La Niña, the 2009–2010 El Niño prompted a deeper thermocline and thicker barrier layer than the 1997–1998 El Niño that hampered the efficiency of the vertical processes in supplying nutrients from the thermocline to the euphotic zone, resulting in a weaker bloom.en_US
dc.description.sponsorshipM.M.G. was supported by the NASA New Investigator Program in Earth Science. K.B.K. was supported by NSF OCE 1031971.en_US
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/postscript
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1002/2013GL057828
dc.subjectEl Niño/La Niña transitionsen_US
dc.subjectBiophysical responseen_US
dc.subjectWestern equatorial Pacificen_US
dc.subjectEquatorial islandsen_US
dc.titleBiophysical responses near equatorial islands in the Western Pacific Ocean during El Niño/La Niña transitionsen_US
dc.typeArticleen_US
dc.description.embargo2014-04-29en_US
dc.identifier.doi10.1002/2013GL057828


Files in this item

Thumbnail
Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record