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Downscaling two versions of a general circulation model to estimate local hydroclimatic factors under climate change

 

作者: ISTVAN MATYASOVSZKY,   ISTVAN BOGARDI,  

 

期刊: Hydrological Sciences Journal  (Taylor Available online 1996)
卷期: Volume 41, issue 1  

页码: 117-129

 

ISSN:0262-6667

 

年代: 1996

 

DOI:10.1080/02626669609491482

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

The regional hydroclimatological effect of global climate change has been estimated and compared using a semi-empirical downscaling method with two versions (T21 and T42) of the general circulation model (GCM) developed at the Max Planck Institute for Meteorology, Germany. The comparisons were performed with daily mean temperature and daily precipitation amounts for the continental climate of the state of Nebraska, USA. Both the T21 and the T42 versions resulted in an increase of daily mean temperature under a 2 x C02 climatess. The magnitude of warming was substantially greater for T21 than for T42, except for February and June and at some stations in July where the T42 model suggested greater warming. Both GCMs resulted in a slight decrease in precipitation frequency and an increase in the amount of precipitation on wet days. Here, the T42 model again led to smaller changes. Different locations within Nebraska exhibited somewhat different temperature and precipitation responses with both GCM versions.

 

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