Abstract
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.
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References
AGO (Australian Greenhouse Office) (2005) Climate change risk and vulnerability – promoting an efficient adaptation response in Australia, Canberra. Available online at http://www.greenhouse.gov.au/impacts/publications/pubs/risk-vulnerability.pdf
Allan RJ, Haylock M (1993) Circulation features associated with the winter rainfall decrease in southwestern Australia. J Climate 6:1356–1367
Ansell TJ, Reason CJC, Smith IN (2000) Decadal variability in southern Australian rainfall and the relationships with regional pressure and sea surface temperatures. Int J Climatol 20:1913–1930
Cai WJ, Shi G, Li Y (2005) Multidecadal fluctuations of winter rainfall over southwest Western Australia simulated in the CSIRO Mark 3 coupled model. Geophys Res Lett 32:L12701, DOI 10.1029/2005GL022712
Charles SP, Bates BC, Hughes JP (1999a) A spatio-temporal model for downscaling precipitation occurrence and amounts. J Geophys Res 104(D24):31657–31669
Charles SP, Bates BC, Whetton PH, Hughes JP (1999b) Validation of a downscaling model for changed climate conditions in southwestern Australia. Clim Res 12:1–14
England MH, Ummenhofer CC, Santoso A (2006) Interannual rainfall extremes over southwest Western Australia linked to Indian Ocean climate variability. J Clim 19:1948–1969
Frederiksen JS, Frederiksen CS (2007) Interdecadal changes in southern hemisphere winter storm track modes. Tellus 59:599–617
Frederiksen CS, Rowell DP, Balgovind RC, Folland CK (1999) Multidecadal simulations of Australian rainfall variability: the role of SSTs. J Clim 12:357–379
GoWA (Government of Western Australia) (2003) Securing our water future: a state water strategy for Western Australia. Department of Premier and Cabinet, Perth
Hope PK (2006) Projected future changes in synoptic systems influencing south west Western Australia. Clim Dyn 26:765–780
Hope PK, Drosdowsky W, Nicholls N (2006) Shifts in the synoptic systems influencing south west Western Australia. Clim Dyn 26:751–764
IOCI (Indian Ocean Climate Initiative) (2002) Climate variability and change in southwest Western Australia. Available online at http://www.ioci.org.au/publications/pdf/IOCI_TechnicalReport02.pdf
Kohonen T (2001) Self organizing maps. Springer, Berlin
Lamb HH, Johnson AI (1961) Climatic variation and observed changes in the general circulation. Geografiska Annaler 43:363–400
Li F, Chambers LE, Nicholls N (2005) Relationships between rainfall in the southwest of Western Australia and near global patterns of sea-surface temperature and mean sea-level pressure variability. Aust Meteor Mag 54:23–33
Lyons TJ (2002) Clouds prefer native vegetation. Meteorol Atmos Phys 80:131–140
Nakićenović N, Coauthors (2000) IPCC special report on emissions scenarios. Cambridge Univ Press
Nicholls N, Drosdowsky W, Lavery B (1997) Australian rainfall variability and change. Weather 52:66–72
Pitman AJ, Narisma GT, Pielke RA Sr, Holbrook NJ (2004) Impact of land cover change on the climate of southwest Western Australia. J Geophys Res 109:D18109, DOI 10.1029/2003JD004347
Power S, Sadler B, Nicholls N (2005) The influence of climate science on water management in Western Australia. Bull Am Meteorol Soc 86:830–844
Ryan B, Hope P (2005) Indian ocean climate initiative stage 2: report of phase 1 activity July 2003–Dec 2004. Available online at http://www.ioci.org.au/publications/reports.html
Sadler B (2005) Informed adaptation to a changed climate state. Is south-western Australia a national canary? Available online at http://www.ioci.org.au/publications/reports.html
Smith IN (2004) An assessment of recent trends in Australian rainfall. Aust Meteorol Mag 53:163–173
Smith IN, McIntosh P, Ansell TJ, Reason CJC (2000) Southwest western Australian winter rainfall and its association with Indian Ocean climate variability. Int J Clim 20:1913–1930
Timbal B (2004) South West Australia past and future rainfall trends. Clim Res 26:233–249
Timbal B, Arblaster J (2006) Land cover change as an additional forcing to explain the rainfall decline in the South West of Australia. Geo Res Lett 33:L07717, DOI 10.1029/2005GL025361
Timbal B, Arblaster JM, Power S (2006) Attribution of the late 20th century rainfall decline in south-west Australia. J Clim 19:2046–2062
WAGTF (Western Australian Greenhouse Task Force) (2004) Western Australian Greenhouse Strategy, Government of Western Australia. Available online at http://portal.environment.wa.gov.au/pls/portal/docs/PAGE/DOE_ADMIN/GREENHOUSE_REPOSITORY/GREENHOUSE_STRATEGY_001.PDF
Water Corporation (2005) Integrated water supply scheme source development plan 2005 – Planning Horizon 2005–2050. Available online at http://www.watercorporation.com.au/_files/publicationsregister/22/SourcePlan_2005.pdf
Whetton PH, McInnes KL, Jones RN, Hennessy KJ, Suppiah R, Page CM, Bathols J, Durack PK (2005) Australian climate change projections for impact assessment and policy application: a review. CSIRO Marine and Atmospheric Research Report No. 001
Wright PB (1974a) Seasonal rainfall in southwestern Australia and the general circulation. Mon Weather Rev 102:219–232
Wright PB (1974b) Temporal variations in seasonal rainfalls in southwestern Australia. Mon Weather Rev 102:233–243
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Brian Ryan Deceased.
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Bates, B.C., Hope, P., Ryan, B. et al. Key findings from the Indian Ocean Climate Initiative and their impact on policy development in Australia. Climatic Change 89, 339–354 (2008). https://doi.org/10.1007/s10584-007-9390-9
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DOI: https://doi.org/10.1007/s10584-007-9390-9