Key findings from the Indian Ocean Climate Initiative and their impact on policy development in Australia

Since the mid-1970s the climatic changes that have taken place in southwest Western Australia have generated a variety of impacts, the most prominent of which is a reduction in dam inflows of at least 50 percent. These impacts were the catalyst for the formation of the Indian Ocean Climate Initiative in 1998, a research partnership between two national research organizations and several state government departments and agencies. This paper describes the key scientific findings of the Initiative with respect to the nature of the climatic changes that have taken place within the region, explores the factors that might have caused these changes, and describes the most recent climate projections for the region. We reflect on the factors leading to the rapid acceptance of the research outcomes from the Initiative, the impact of the Initiative on policy development across Australia and its likely evolution post-2006.

[1]  I. Smith,et al.  Southwest Western Australian winter rainfall and its association with Indian Ocean climate variability , 2000 .

[2]  J. Arblaster,et al.  Land cover change as an additional forcing to explain the rainfall decline in the south west of Australia , 2006 .

[3]  Haizeng Liu,et al.  Grain alignment and microstructure of (Nd,Dy) 12.8(Fe,M) 80.7B 6.5 by strip casting , 2005 .

[4]  Alexei G. Sankovski,et al.  Special report on emissions scenarios , 2000 .

[5]  M. Haylock,et al.  Circulation Features Associated with the Winter Rainfall Decrease in Southwestern Australia. , 1993 .

[6]  P. B. Wright,et al.  Temporal Variations in Seasonal Rainfalls in Southwestern Australia , 1974 .

[7]  T. J. Lyons,et al.  Clouds prefer native vegetation , 2002 .

[8]  A. Pitman,et al.  Impact of land cover change on the climate of southwest Western Australia , 2004 .

[9]  R. Balgovind,et al.  Multidecadal Simulations of Australian Rainfall Variability: The Role of SSTs , 1999 .

[10]  H. Lamb,et al.  Climatic Variation and Observed Changes in the General Circulation , 1961 .

[11]  Neville Nicholls,et al.  Australian rainfall variability and change , 1997 .

[12]  Teuvo Kohonen,et al.  Self-Organizing Maps , 2010 .

[13]  Neville Nicholls,et al.  The Influence of Climate Science on Water Management in Western Australia: Lessons for Climate Scientists , 2005 .

[14]  Bertrand Timbal,et al.  Attribution of the Late-Twentieth-Century Rainfall Decline in Southwest Australia , 2006 .

[15]  B. Timbal.  Southwest Australia past and future rainfall trends , 2004 .

[16]  J. Frederiksen,et al.  Interdecadal changes in southern hemisphere winter storm track modes , 2007 .

[17]  P. Hope,et al.  Projected future changes in synoptic systems influencing southwest Western Australia , 2006 .

[18]  James P. Hughes,et al.  A spatiotemporal model for downscaling precipitation occurrence and amounts , 1999 .

[19]  I. Smith,et al.  Evidence for decadal variability in southern Australian rainfall and relationships with regional pressure and sea surface temperature , 2000 .

[20]  James P. Hughes,et al.  Validation of downscaling models for changed climate conditions: case study of southwestern Australia , 1999 .

[21]  W. Cai,et al.  Multidecadal fluctuations of winter rainfall over southwest Western Australia simulated in the CSIRO Mark 3 coupled model , 2005 .

[22]  M. England,et al.  Interannual Rainfall Extremes over Southwest Western Australia Linked to Indian Ocean Climate Variability , 2006 .

[23]  Neville Nicholls,et al.  Shifts in the synoptic systems influencing southwest Western Australia , 2006 .

[24]  Relationships between rainfall in the southwest of Western Australia and near-global patterns of sea-surface temperature and mean sea-level pressure variability , 2005 .

[25]  P. B. Wright,et al.  Seasonal Rainfall in Southwestern Australia and the General Circulation , 1974 .