Climate Change Projections for the 21st Century by the NCC/IAP T63 Model with SRES Scenarios

The projections of climate change in the globe and East Asia by the NCC/IAP T63 model with the SRESA2 and A1B scenarios have been investigated in this paper. The results pointed out a global warming of3.6°C/100 yr and 2.5°C/100 yr for A2 and A1B during the 21st century, respectively. The warming in highand middle latitudes will be more obvious than that in low latitudes, especially in the winter hemisphere.The warming of 5.1°C/100 yr for A2 and 3.6°C /100 yr for A1B over East Asia in the 21st century will bemuch higher than that in the globe. The global mean precipitation will increase by about 4.3%/100 yr forA2 and 3.4%/100 yr for A1B in the 21st century, respectively. The precipitation will increase in most partsof the low and high latitudes and decrease in some regions of the subtropical latitudes. The linear trendsof the annual mean precipitation anomalies over East Asia will be 9.8%/100 yr for A2 and 5.2%/100 yrfor A1B, respectively. The drier situations will occur over the northwestern and southeastern parts of EastAsia.The changes of the annual mean temperature and precipitation in the globe for the 21st century bythe NCC/IAP T63 model with SRES A2 and A1B scenarios are in agreement with a number of the modelprojections.