云区催化增水的数值模拟试验

本文以常规气象资料为初值,用载水的原始方程模式,对早春时节我国北方一次低压层状云区的浓密、过冷空域,进行模拟催化增水的数值试验。与相同初值下的预报结果相比,催化区及其邻近地区出现大面积降水。模拟试验的结果从一个方面说明,通过对云区催化实现大面积增水,在科学上是可行的;以载水数值模式进行数值模拟试验,指导人工催化作业,有助于做到以较小的经济代价,取得较好的增水效果。

NUMERICAL SIMULATIONS OF SEEDING IN CLOUD AREA

A series of numerical experiments are engaged by running the water-bearing numerical model for simulating the cloud-seeding in the thick airspace of stratus cloud area in a depression. The conventional meteorological data are used in these experiments. Comparing the results of simulations with those of forecasting and observation, it is found that the precipitation occures in and around the seeding area, while both the forecasting and observation show that there is no precipitation in this area.The following ideas are leaded from these experiments:1. It is feasible in science to stimulate precipitation by seeding in cloud area.2. With the aid of numerical simulating experiments to guide the cloud seeding operation, it is possible to stimulate vast precipitation with less expense.