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Interannual variability in upper ocean salt content in the southeast Indian Ocean

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Phillips, HE and Wijffels, SE and Feng, M (2005) Interannual variability in upper ocean salt content in the southeast Indian Ocean. Geophysical Research Letters, 32. ISSN 0094-8276

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Abstract

An average freshening of 0.2 psu, extending from 100 degrees E to Australia, 25 degrees S to Indonesia and down to 180 m depth, persisted for more than 3 years from 1999 to 2002. We map the anomaly using CTD profiles from Argo floats and suggest that the dominant forcing for the anomaly is surface freshwater flux over the Indonesian seas that is advected into the region. Using historical CTD data and surface freshwater flux reanalysis products we show that the Indonesian Australian Basin experiences strong interannual variability in upper ocean freshwater content and that the recent fresh event, a result of a long-lasting La Nina, is unprecedented during the last 25 years.

Item Type: Article
Keywords: salinity, Argo, rainfall, el-nino
Journal or Publication Title: Geophysical Research Letters
ISSN: 0094-8276
Identification Number - DOI: 10.1029/2004GL021755
Additional Information: An edited version of this paper was published by AGU. Copyright 2005 American Geophysical Union
Date Deposited: 26 Feb 2007
Last Modified: 18 Nov 2014 03:13
URI: http://eprints.utas.edu.au/id/eprint/682
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