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Article: Warming Trend of the Indian Ocean SST and Indian Ocean Dipole from 1880 to 2004*
- Article from:
- Journal of Climate
- Article date:
- May 15, 2008
- Author:
CopyrightCopyright American Meteorological Society May 15, 2008. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
The state of the Indian Ocean dipole representing the SST anomaly difference between the western and southeastern regions of the ocean is investigated using historical SST reconstructions from 1880 to 2004. First, the western and eastern poles of the SST-based dipole mode index are analyzed separately. Both the western and eastern poles display warming trends over this period, particularly after the 1950s. The western pole tends to be anomalously colder than the eastern pole from 1880 to 1919, whereas in the interval 1950-2004 the SST anomalies over the western pole are comparable to those over the eastern pole though there are occasional outliers where the eastern pole is ...