Current Research On The Impact Of Ice Nucleation Growth Process. Stratiform Clouds

This paper is based on summarizing and analyzing the correlative work. It introduces the speed of the uniform flow closing to the dynamical field in the factual cloud to the answer of the probability equation of the catalyst particle remains in the cloud of nucleation layer, ameliorates the answer of the equation which doesn't consider the uniform flow evidently . According to this answer ,this paper concludes that the time that the artificial seeding ice nucleus remains in the nucleation layer of the different uniform flow. The paper works out the ice crystal spectrum distributing in the different macroscopic and micro-backgroud of the cloud(ie,the thickness , the temperature and the supersaturation with respect to ice of the nucleation layer).This paper also works out the amount of catalyst which is allowed in the cloud nucleation layer according to the different quantity of the supercooled water ,the density of the supersaturation of the vapor with respect to ice .Simultaneously, the paper discusses the influence of remaining time when seeding artificial ice nucleus in the different ascending-velocity and altitude, and elicits the proper seeding altitude of the catalyst. Finally, it briefly discusses the feasibility, the applying foreground and the approach with regard to the calculating method about the amount of catalyst provided in this paper by integrating the ascending-velocity field and cloud water field in the possible working section abstracted from the MM5 mesoscale model with the thickness of the ice crystal particles in nucleation layer and supercooled water quantity which is surveyed by the plane. It tries to provide the scientific and practical basis for the artificial precipitation.