南北方人工造雾的气象可行性研究

本文分析了造雾剂的成雾原理和影响成雾效果的温度、相对湿度和风速等环境因素,对典型南方城市(长沙)和北方城市(北京)的相关气象资料进行统计分析表明,南方的气候除14时外非常适合造雾,而北方02时和08时造雾完全可行,20时也存在很大的可能性。外场试验表明,由于开放空间的特点,造雾剂成雾所需的相对湿度降低,同时也由于大面积人造雾的集团效应和外场空间较高的凝水效率,使人工造雾的抗风能力加强,外场人工造雾的可行性很大。

STUDY ON THE FEASIBILITY OF WEATHER FOR ARTIFICIAL FOG IN NORTH AND SOUTH CHINA

In this paper,the principle of artifical fog was discussed.The factors,such as relative humidity(RH) and wind speed which affect the fog's performance were analysed.The statistical results,based on the above-mentioned weather data for the typical southern district city Changsha and northern district city Beijing,show that the humidity of Changsha is more higher than Beijing.It's fit for producing fog in south except at 2:00 p.m.But in North it' s no problerm for producing fog at 2:00 and 8:00 a.m.It is feasible for fog formation at 8:00 p.m.The field experiments indicate the RH for producing fog decreased because of the characteristic of open system.The fog's ability of anti-wind is enhanced for the high condensation efficiency and group effect.Therefore,the primary weather condition for fog formation is almost possessed.It's feasible for producing fog in areas of square kilometers.