How much do disasters cost? A comparison of disaster cost estimates in Australia

Extreme weather events in Australia are common and a large proportion of the population are exposed to such events. Therefore, there is great interest as to how these events impact Australia's society and economy, which requires understanding the current and historical impact of disasters. Despite global efforts to record and cost disaster impacts, no standardised method of collecting and recording data retrospectively yet exists. The lack of standardisation in turn results in a range of different estimates of economic impacts. This paper examines five examples of aggregate disaster loss and impacts of natural disasters in Australia, and comparisons between them reveal significant data shortcomings. The reliability of data sources, and the methodology employed to analyse them can have significant impacts on conclusions regarding the overall cost of disasters, the relative costs of different hazards (disaster types), and the distribution of losses across Australian states. We highlight difficulties with time series comparisons, further complicated by the interdependencies of the databases. We reiterate the need for consistent and comparable data collection and analysis, to respond to the increasing frequency and severity of disasters in Australia.

[1]  Susan Pascoe,et al.  The 2009 Victorian Bushfires Royal Commission final report , 2010 .

[2]  Kevin D. Ash,et al.  Acceptable losses? The relative impacts of natural hazards in the United States, 1980-2009 , 2013 .

[3]  De Groeve Tom,et al.  Recording Disaster Losses: Recommendations for a European approach , 2013 .

[4]  L. Bouwer.  Have disaster losses increased due to anthropogenic climate change , 2011 .

[5]  John Handmer,et al.  The Chimera of Precision: Inherent Uncertainties in Disaster Loss Assessment , 2002, International Journal of Mass Emergencies & Disasters.

[6]  Mark A. Saunders,et al.  Normalized Hurricane Damage in the United States: 1900–2005 , 2008 .

[7]  MARY W. DOWNTON,et al.  How Accurate are Disaster Loss Data? The Case of U.S. Flood Damage , 2005 .

[8]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[9]  D. Guha-Sapir,et al.  Thirty years of natural disasters 1974-2003: The numbers , 2004 .

[10]  Reimund Schwarze,et al.  Review Article "Valuating the intangible effects of natural hazards – review and analysis of the costing methods" , 2012 .

[11]  Wolfgang Kron,et al.  The need for data: natural disasters and the challenges of database management , 2012, Natural Hazards.

[12]  E. Weber,et al.  How Australian Farmers Deal with Risk , 2012 .

[13]  Catherine Stephenson,et al.  Estimating the net cost of the 2009 Black Saturday Fires to the affected regions , 2012 .

[14]  Annegret H. Thieken,et al.  Review article: assessing the costs of natural hazards - state of the art and knowledge gaps , 2013 .

[15]  Robert Power,et al.  The Pilot Impacts Portal: Experience in building an emergency management information sharing tool , 2013 .

[16]  Russell Blong,et al.  Residential building damage and natural perils: Australian examples and issues , 2004 .

[17]  Robyn Betts,et al.  Towards a consistent approach to disaster loss assessment across Australia , 2005 .

[18]  Ryan P. Crompton,et al.  Normalised Australian insured losses from meteorological hazards : 1967-2006 , 2008 .

[19]  Ryan P. Crompton,et al.  The Cost of Natural Disasters in Australia: The Case for Disaster Risk Reduction , 2008 .

[20]  Chris Larkin,et al.  Natural Disasters in Australia: Issues of funding and insurance , 2010 .

[21]  Brian R. Cook,et al.  Environmental Hazards: Assessing Risk and Reducing Disaster , 2010 .

[22]  D. Guha-Sapir,et al.  EM-DAT: The CRED/OFDA International Disaster Database , 2016 .

[23]  J. Barredo.  Normalised flood losses in Europe: 1970-2006 , 2009 .

[24]  Air quality and resource development. A risk assessment in the hunter region in Australia by Jakeman, A. J. and Simpson, R. W., CRES Monograph No. 16, Centre for Resource and Environmental Studies, Australian National University, Canberra, Australia , 1988 .

[25]  Katharine Haynes,et al.  Exploring 167 years of vulnerability: An examination of extreme heat events in Australia 1844–2010 , 2014 .

[26]  C. Benson,et al.  Understanding the Economic and Financial Impacts of Natural Disasters , 2004 .

[27]  J. Handmer,et al.  Locating the intangible: Integrating a sense of place into cost estimations of natural disasters , 2016 .

[28]  Dennis E. Wenger,et al.  MASS MEDIA AND DISASTERS , 1985 .

[29]  F. Barthel,et al.  Normalizing Economic Loss from Natural Disasters: A Global Analysis , 2010 .

[30]  Susan L. Cutter,et al.  Assessing Flood Hazard Zones in the Absence of Digital Floodplain Maps: Comparison of Alternative Approaches , 2007 .