The introduced mathematical model takes into account the role of the kinetic fractionation effect in a supersaturation environment at the ice surface as liquid and solid phases coexist in mixed cloud. Using the model, the temperature effect of stable isotopes in precipitation is simulated under different cooling conditions. The rate of change of δ18O against temperature in the process of wet adiabatic cooling is smaller than in the process of isobaric cooling under the same humidity. The increasing supersat...
【基金】
This work was supported by the National High Technology Research and Development Program of China (863 Program, Grant No. 2002AA135360), the National Natural Science Foundation of China (Grant No. 40271025), the National Key Research Project (Grant No.
【分类号】
P433
【正文快照】
1.Introduction The behavior of stable isotopes in precipitation iSintimately linked to the mechanism prevailing dur—ing cloud and precipitation formations.Temperatureplays a very important role in phase change and is amain factor influencing isotopic cha