Possible Links Between Human Activities and the Earth's Climate

In this article I like to overview several important climate effects of aerosols that can change the earth's radiation budget, cloud, and also precipitation. There are still large uncertainties in evaluation of these effects by models and observation. I like to propose recommendations for future works to reduce the large uncertainties. Especially a future important work is to improve fine resolution aerosol and cloud modeling and combined analysis of satellite and surface data.