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http://dx.doi.org/10.3741/JKWRA.2003.36.3.345

Construction of Basin Scale Climate Change Scenarios by the Transfer Function and Stochastic Weather Generation Models  

Kim, Byung-Sik (Dept. of Civil Engrg., Inha Univ.)
Seoh, Byung-Ha (Dept. of Civil Engrg., Inha Univ.)
Kim, Nam-Won (KICT)
Publication Information
Journal of Korea Water Resources Association / v.36, no.3, 2003 , pp. 345-363 More about this Journal
Abstract
From the General Circulation Models(GCMs), it is known that the increases of concentrations of greenhouse gases will have significant implications for climate change in global and regional scales. The GCM has an uncertainty in analyzing the meteorologic processes at individual sites and so the 'downscaling' techniques are used to bridge the spatial and temporal resolution gaps between what, at present, climate modellers can provide and what impact assessors require. This paper describes a method for assessing local climate change impacts using a robust statistical downscaling technique. The method facilitates the rapid development of multiple, low-cost, single-site scenarios of daily surface weather variables under current and future regional climate forcing. The construction of climate change scenarios based on spatial regression(transfer function) downscaling and on the use of a local stochastic weather generator is described. Regression downscaling translates the GCM grid-box predictions with coarse resolution of climate change to site-specific values and the values were then used to perturb the parameters of the stochastic weather generator in order to simulate site-specific daily weather values. In this study, the global climate change scenarios are constructed using the YONU GCM control run and transient experiments.
Keywords
Downscaling; General circulation models; Climate change; Weather generator model;
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Times Cited By KSCI : 1  (Citation Analysis)
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