Cllimate Change and Chemistry

Abstract

The issue of global warming and climate change induced by human activity have been felt a bit far from chemistry. However, radiatively active substances in the atmosphere are chemical species. What we can do for the climate change mitigation is to reduce the emissions of these chemical species, and not to change the physical parameters in the atmosphere. Further, the major uncertainty of climate change prediction relies on the treatment of aerosols and clouds. It would be worthwhile to distinguish how much fraction of the uncertainty is within to the molecular chemical particle growth processes starting from gaseous molecules to molecular clusters, new particle formation, particle growth and to cloud condensation nuclei, and how much fraction of the uncertainty resides on the nonlinear physical growth process of cloud water to precipitation. The role of chemistry needs be clarified.