Source of General Circulation Models

I obtain several questions regarding the SDSM model. Here are some of the questions:

Am writing this email from Ethiopia and am doing my thesis work regarding impact of climate change on hydrology. am pleased to ask you about climate scenarios where to download like HadCM3 A2 and B2. Currently am planning to use SDSM-DC 5.2, predictor variable 1948-2014. please send me the link.

and

where will we get the data for HadCM3 A1, A1B, B2 for for Ethiopia region. please guide me in this regards.

We can directly obtain the General Circulation Models (GCMs) from https://esg.llnl.gov:8443/home/publicHomePage.do. Those data are raw data and require extraction to be suitable for application with the SDSM model.

The alternative source of GCMs that I am using (detailed in my publications) is published by Canadian Climate Data and Scenarios (CCDS).:

http://link.springer.com/article/10.1007/s12665-015-4054-y or

http://link.springer.com/article/10.1007/s00704-013-0951-8) 

Data published by the CCDS contain normalized NCEP and GCMs. We are able to directly use the SDSM model (or other statistical approaches). Below are some GCMs published by CCDS:

HadCM3 (http://www.cccsn.ec.gc.ca/?page=pred-hadcm3), CGCM2 (http://www.cccsn.ec.gc.ca/?page=pred-cgcm2), and CGCM3 (http://www.cccsn.ec.gc.ca/?page=pred-cgcm3).