Multi-hazard Average Annual Loss

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Source UNISDR
Contributor
Date of Dataset Jan 01, 2015
Expected Update Frequency Never
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Methodology

In GAR15, multihazard AAL is calculated for every country for earthquake, cyclone wind and storm surge, tsunami, and floods. The probabilistic risk assessment methodology integrates uncertainty into the results. However, it should be recognized that although the most appropriate datasets available at the time of conducting these assessment were used, the results keep a level of uncertainty that arises from assumptions and quality of the data sets used, or the simplifications necessary to model the hazards at global scale, or in modelling vulnerability of building classes in all countries. However, for the purposes of global-scale analysis and country-to-country comparisons, the level of uncertainty is considered acceptable. These results should thus be considered an initial step toward understanding the extent of disaster losses that a country might face and toward determining further actions, such as detailed country and subnational risk assessments. More information about the probabilistic risk modelling for GAR15 global risk assessment can be found in CIMNE et al., 2014a. For GAR15, the risk was calculated with the CAPRA-GIS platform which is risk modelling tool of the CAPRA suite (www.ecapra.org). The CAPRA model follows a state-of-art procedure for calculating risk. In each grid of the exposure database, and for each building class in the grid, the risk is calculated by assessing the damage caused by each of the modelled hazard events.

Caveats / Comments

This dataset was generated using other global datasets; it should not be used for local applications (such as land use planning). The main purpose of GAR 2015 datasets is to broadly identify high risk areas at global level and for identification of areas where more detailed data should be collected. Some areas may be underestimated or overestimated. Given this analysis was conducted using global datasets, the resolution of which is not sufficient for in-situ planning, it should not be used for critical (like life saving) decisions. UNISDR and collaborators should in no case be liable for misuse or misinterpretation of the presented results. The designations employed and the presentation of material on the maps do not imply the expression of any opinion whatsoever on the part of UNISDR or the Secretariat of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The designations employed and the presentation of material on the maps do not imply the expression of any opinion whatsoever on the part of UNISDR or the Secretariat of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. This analysis was conducted using global datasets, the resolution of which is not relevant for in-situ planning and should not be used for life and death decisions. UNISDR and collaborators should in no case be liable for misuse of the presented results.

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