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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
Authors/Creators:	Phillips, HE and Wijffels, SE and Feng, M
Keywords:	salinity, Argo, rainfall, el-nino
Journal or Publication Title:	Geophysical Research Letters
ISSN:	0094-8276
DOI / ID Number:	10.1029/2004GL021755
Additional Information:	An edited version of this paper was published by AGU. Copyright 2005 American Geophysical Union
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