Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/107735
Authors: 
Keighley, Tim
Longden, Thomas
Mathew, Supriya
Trück, Stefan
Year of Publication: 
2014
Series/Report no.: 
Nota di Lavoro, Fondazione Eni Enrico Mattei 93.2014
Abstract: 
The analysis of catastrophic and climate impacted hazards is a challenging but important exercise, as the occurrence of such events is usually associated with high damage and uncertainty. Often, at the local level, there is a lack of information on rare extreme events, such that available data is not sufficient to fit a distribution and derive parameter values for the frequency and severity distributions. This paper discusses local assessments of extreme events and examines the potential of using expert opinions in order to obtain values for the distribution parameters. In particular, we illustrate a simple approach, where a local expert is required to only specify two percentiles of the loss distribution in order to provide an estimate for the severity distribution of climate impacted hazards. In our approach, we focus on so-called heavy-tailed distributions for the severity, such as the Lognormal, Weibull and Burr XII distribution. These distributions are widely used to fit data from catastrophic events and can also represent extreme losses or the so-called tail of the distribution. An illustration of the method is provided utilising an example that quantifies the risk of bushfires in a local area in Northern Sydney.
Subjects: 
Catastrophic Risks
Climate Impacted Hazards
Expert Opinions
Local Level Decision Making
Loss Distribution Approach
JEL: 
Q5
Q54
Q58
Document Type: 
Working Paper

Files in This Item:
File
Size





Items in EconStor are protected by copyright, with all rights reserved, unless otherwise indicated.