Assessment of GCM-based rainfall simulations for the Austral-Indonesian region

Faqih, Akhmad and Ribbe, Joachim and Meinke, Holger (2008) Assessment of GCM-based rainfall simulations for the Austral-Indonesian region. In: WMO 4th International Workshop on Monsoons (IWM-IV), 20-25 Oct 2008, Beijing, China.

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[Summary]: Our assessment shows considerable discrepancies between observed and simulated rainfall amongst the 21 models. Generally, the representation of rainfall is better for northern Australia during seasonally dry periods (Austral winter and spring). More than half of the models reproduce unrealistic rainfall distributions, particularly due to overestimation of rainfall in the Indonesian region.

The CADS shows that MIUB-ECHO-G model has the lowest eviation from recorded seasonal rainfall in summer and winter, while MRI-CGCM2.3.2a performs best during transition periods in autumn and spring. The late 21st century rainfall assessments of these two models indicate considerable rainfall changes particularly over Indonesia for all seasons. Rainfall projections for northern Australia, however, show little changes in rainfall patterns. Structural differences between these two models and other GCMs need to be investigated to pinpoint the physical causes of differences in performance.

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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.
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 21 May 2009 01:04
Last Modified: 26 Sep 2013 06:20
Uncontrolled Keywords: IPCC, climate change, rainfall, Austral-Indonesia, maritime continent, monsoon
Fields of Research : 04 Earth Sciences > 0401 Atmospheric Sciences > 040105 Climatology (excl.Climate Change Processes)

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