The SRES data sets were published by the IPCC in 2000 and classified into four different scenario families (A1, A2, B1, B2). SRES_A1 storyline describes a future world of very rapid economic growth, global population that peaks in mid-century and declines thereafter and the rapid introduction of new and more efficient technologies. It is distinguished by their technological emphasis: A1FI: fossil intensiv A1T : non-fossil energy sources A1B : a balance across all sources. It is a parallel climate model (PCM) and consists of the atmospheric component which is the parallel version of NCAR Community Climate Model Vers.3.2 (CCM3) and the ocean component which is the POP (Parallel Ocean Program) model. NCARPCM (http://www.cgd.ucar.edu/pcm/ ) The changes of anthropogenic emissions of CO2, CH4, N2O and sulphur dioxide are prescribed according to the above mentioned scenario.