关键词: 关键词：陆面, 相变过程, 露水预估模型, 持续时间, 凝结量

Abstract: Dew occurs at the bottom of the atmospheric boundary layer and is affected by atmosphere, vegetation and soil. It plays an important role in arid and semi-arid terrestrial ecosystem. In view of the complexity of the physical process of land dew condensation, its observation and simulation started late. The development of dew condensation projection model has undergone three stages including statistical regression, latent heat flux relationship and simplified cloud physics/energy balance model in recent decades. The main scientific problems of dew condensation projection models are summarized: the lack of representative models caused by short observation data series, the unclear of the physical mechanism of dew formation on different underlying surfaces, the lack of effective simulation of natural underlying surface dew, the unreasonable of latent heat flux relationship of land surface models in arid and semi-arid regions. It is necessary to deepen the research on the condensation mechanism of natural underlying surface dew, reveal the influence mechanism of underlying surface properties on the condensation rate, and develop the condensation model suitable for different climatic backgrounds in China

Key words: Key words: land surface, phase change process, dew prediction model, duration, condensation