广东各地Pasquill稳定度频率的分布特征

THE CHARACTERISTICS OF FREQUENCY DISTRIBUTION OF PASQUILL STABILITY FOR DIFFERENT AREAS OF GUANGDONG

根据广东多年低空探测资料，统计分析出不同地区ｐａｓｑｕｉｌｌ稳定度的频率分布特征、日变化和季节演变规律。分析结果表明，广东省各地的Ｐａｓｕｕｉｌｌ稳定度均以中性频率最大，不稳定类（Ａ—Ｃ）频率比稳定类（Ｅ—Ｆ）大些．沿海、平原、山区这３种区域的中性频率依次减小，而不稳定类和稳定类的频率则依次逐渐增加．

According to the observations measured in low troposphere of Guangdong for five years ,the characteristics of frequency distribution of Pasquill stability for different areas and its diurnal,seasonal and annual changes were analysed. The results indicate that the neutral frequency appears to be the maximum for Pasquill stability in the whole of Guangdong and the values of unstable (A─C) frequency are higher than those of stable (E─F) frequency. The values of neutral frequency decrease in the order of the coastal area, plain and mountainous area while the values of unstable and stable frequency increase in the same sequence.