Interdecadal variability of regional sea surface temperature and rainfall in the Austral-Indonesian region

Faqih, Akhmad and Ribbe, Joachim and Meinke, Holger (2008) Interdecadal variability of regional sea surface temperature and rainfall in the Austral-Indonesian region. In: WMO 4th International Workshop on Monsoons (IWM-IV), 20-25 Oct 2008, Beijing, China. (Unpublished)

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Abstract

[Summary]: This study investigates the interdecadal SST-rainfall variability from a regional perspective. The result complements the finding of a previous study. The first leading seasonal SST patterns are consistently characterized by around 14 years interdecadal variability at all seasons. By using the dominant cycle as a parameter in filtering the data, the study finds that the low-frequency regional SST is locally and seasonally varying. The seasonal variations of the regional SST also influence the SST-rainfall relationship on the low-frequency timescales. The PDO and IPO are linked to low-frequency rainfall variability in the region through regulating regional SST patterns mostly through the atmospheric interaction. However, the influence of those large scale climate phenomena is interfered by the warming and upward trend of the regional SST. It is possible that climate change has a major role in contributing to these upward trends. The study highlights the important role local SST plays in driving rainfall variability. This needs to be considered when studying the effect of global climate phenomena such as PDO and IPO on rainfall variability in the region.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Poster)
Refereed: No
Item Status: Live Archive
Additional Information: Not published.
Depositing User: Dr Joachim Ribbe
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 21 May 2009 01:19
Last Modified: 26 Sep 2013 06:20
Uncontrolled Keywords: climate change, Australi-Indonesia region, sea surface temperature, climate variability, El Nino Southern Oscillation, Pacific Decadal Oscillation, Interdecadal Oscillation, rainfall
Fields of Research (FOR2008): 04 Earth Sciences > 0401 Atmospheric Sciences > 040104 Climate Change Processes
URI: http://eprints.usq.edu.au/id/eprint/4551

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