Research Into The Influence Of Black Carbon Aerosol On Regional Climate Change Based On The RegCM3

At present, the growing environmental problems are affecting human lives, and climate change is gaining increasing attention throughout the world in the meanwhile. The vastness of China and our country’s location in areas in which climate change is both sensitive and vulnerable has brought about a relatively high frequency of climate change. Due to these, China has become one of the countries seriously affected by climate change. Further research of the black carbon aerosol which is one of the most important driving factors affecting climate change has a significant impact on the regional climate change and atmospheric environment quality.The simulating capability of the RegCM3 model was verified firstly, and the results are as follows:(1) the average temperature over the country from 2000 to 2009 is simulated and verified, and the simulation results are well consistent with the actual data, (2) the mean monthly temperature as well as the representative region’s monthly temperature and the wind field are then simulated and verified, and the findings show detailed descriptions of them mentioned above, furthermore, the simulation results are consistent with the actual situation and the observation data, and (3) the country’s temperature variation tendency is simulated and verified through the RegCM3 model, the results of which display that the RegCM3 model can well simulate the temperature variation trend annually or monthly. In conclusion, the RegCM3 model would be available for the simulation experiments for its excellent capability meeting the research demands. Based on the black carbon emission data in 2013, the effect of black carbon aerosols on the climate is then simulated through the RegCM3 model. And the results show that the black carbon mainly influences temperature in the mid-eastern China. The temperature rises to an extent of 0-0.4℃ and 0.6℃ in some areas due to the existence of black carbon aerosols. Besides, amount of short wave radiation reaching the planet surface decreases 1-2W/m2 correspondently and amount of long wave radiation increases 0.4-0.8W/m2. Consequently, the net radiation of atmosphere increases 0.6-1 W/m2 approximately.