Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/155140
Authors: 
Goodess, Clare
Palutikof, Jean
Agnew, Maureen
Year of Publication: 
2000
Series/Report no.: 
Nota di Lavoro, Fondazione Eni Enrico Mattei 87. 2000
Abstract: 
General Circulation Models (GCMs) are considered to provide the best basis for the construction of future climate change scenarios. GCM output cannot, however, be widely or directly used in many impact assessments because of their relatively coarse spatial scale. In order to overcome the problems of mismatch in scale and of reliability, techniques for downscaling GCM output have been developed. A number of different downscaling methods have been proposed and can be divided into two general categories: model-based and empirical. Two examples of empirical downscaling are presented. First, scenarios for the Mediterranean region as a whole, constructed using a Geographical Information System to interpolate GCM output to a 1 km by 1 km grid based on information such as height above sea level, distance to the sea, and latitude/longitude. Second, scenarios at the river-basin scale for study regions in Spain and Italy, based on changes in atmospheric circulation patterns.
Subjects: 
Climate-change
Mediterranean
scenarios
global warming
modelling
Document Type: 
Working Paper

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