Abstract: The change of surface wind speed was projected by 23 Climate models from the CMIP5 (Coupled Model Intercomparison Project Phase 5) for IPCC AR5 (Intergovernmental Panel on Climate Change Fifth Assessment Report) adapted by WCRP (Word Climate Research Programme) and 19 Climate models from the CMIP3 (Coupled Model Intercomparison Phase 3) for IPCC AR4 (Intergovernmental Panel on Climate Change Fourth Assessment Report) adapted by WCRP (Word Climate Research Programme).The human emission scenarios used the RCPs (Representative Concentration Pathways) including RCP2.6,RCP4.5 RCP8.5 from CMIP5 and the SRES (Special Report on Emissions Scenarios) including B1,A1B,A2 from CMIP3.The results show that the mean annual wind speeds would decrease slightly in China in the 21^st century.The mean wind speeds would reduce more significantly with the increase of human emission concentration.Both CMIP5 and CMIP3 project that the mean annual wind speed in Western China (Northern and Southwestern parts) would decrease in the 21^st Century and would increase in the eastern region.Compared with that in the early period of the 21^st Century (2006-2015),wind speed would decrease in the south of Northeast China,north of North China and West China,while it would increase in the south of North China,South China and the north of Northeast China in the late 21^st Century (2090-2099).With the increase of human emission concentration,the negative (positive) deviation ranges in wind would enlarge and the corresponding center value would be more concentrated in winter (summer).

Key words: CMIP5, CMIP3, Surface wind speed, RCP, Projection