English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/103195
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Analyzing the 2010-2011 La Niña signature in the tropical Pacific sea surface salinity using in situ data, SMOS observations, and a numerical simulation

AuthorsHasson, Audrey; Delcroix, Thierry; Boutin, Jacqueline; Dussin, Raphael; Ballabrera-Poy, Joaquim
Issue DateJun-2014
PublisherAmerican Geophysical Union
CitationJournal of Geophysical Research: Oceans 119(6): 3855-3867 (2014)
AbstractThe tropical Pacific Ocean remained in a La Niña phase from mid-2010 to mid-2012. In this study, the 2010-2011 near-surface salinity signature of ENSO (El Niño-Southern Oscillation) is described and analyzed using a combination of numerical model output, in situ data, and SMOS satellite salinity products. Comparisons of all salinity products show a good agreement between them, with a RMS error of 0.2-0.3 between the thermosalinograph (TSG) and SMOS data and between the TSG and model data. The last 6 months of 2010 are characterized by an unusually strong tripolar anomaly captured by the three salinity products in the western half of the tropical Pacific. A positive SSS anomaly sits north of 10°S (>0.5), a negative tilted anomaly lies between 10°S and 20°S and a positive one south of 20°S. In 2011, anomalies shift south and amplify up to 0.8, except for the one south of 20°S. Equatorial SSS changes are mainly the result of anomalous zonal advection, resulting in negative anomalies during El Niño (early 2010), and positive ones thereafter during La Niña. The mean seasonal and interannual poleward drift exports those anomalies toward the south in the southern hemisphere, resulting in the aforementioned tripolar anomaly. The vertical salinity flux at the bottom of the mixed layer tends to resist the surface salinity changes. The observed basin-scale La Niña SSS signal is then compared with the historical 1998-1999 La Niña event using both observations and modeling. Key Points The well-marked signature of the 2010-2011 La Nina is described and analyzed In situ, modeled and SMOS surface salinity products show good overall agreement The processes for the western Pacific strong tripolar anomaly shift are studied © 2014. American Geophysical Union. All Rights Reserved
Description13 pages, 7 figures, 1 table
Publisher version (URL)http://dx.doi.org/10.1002/2013JC009388
URIhttp://hdl.handle.net/10261/103195
DOI10.1002/2013JC009388
Identifiersdoi: 10.1002/2013JC009388
e-issn: 2169-9291
Appears in Collections:(ICM) Artículos
Files in This Item:
File Description SizeFormat 
Hasson_et_al_2014.pdf2,79 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.