重庆市大气混合层厚度的计算和分析

CALCULATION AND ANALYSIS OF THE THICKNESS OF ATMOSPHERIC MIXED LAYER ABOVE CHONGQING

应用国家标准ＧＢ／Ｔ１３２０１９１规定的方法计算分析了重庆市１９８１～１９０年大气混合层厚度；并用罗氏法计算了重庆市１９８８年的大气混合层厚度；并对２种方法所得结果进行了对比分析。结果表明：重庆市大气混合层厚度多年的平均值为３４６ｍ；逐年变化不明显；季节变化明显；日变化非常明显；大气稳定度是决定大气混合层厚度的主要因子。罗氏法因考虑的因子比较多，故较准确。

The thickness of the atmospheric mixed layer above Chongqing for the past 10 years(1981～1991) is calculated in conformity with the National Standard GB/T13201 91.That of the year 1988 is calculated by using the Nozaki method.The results show that the seasonal and diurnal changes of the thickness of mixed layer above Chongqing is obvious and the atmospheric stability is an important factor in determining the thickness of mixed layer.The calculation by the Nozaki method is more accurate because it takes more factors into consideration.So the Nozaki method is more applicable to the areas where routine observational data are available.