德宏芒市机场2006~2020年能见度特征分析及气象要素相关性分析
Analysis of Visibility Characteristics and Correlation Analysis of Meteorological Elements at Dehong Mangshi Airport during 2006~2020

本文通过2006~2020年德宏芒市机场地面气象观测资料，对能见度的年变化、年际变化及日变化等特征分析，以及低能见度与气温、相对湿度、修正海平面气压和天气现象等气象要素相关性分析。结果表明，芒市机场平均能见度年际变化不明显，整体是上升的趋势，在不同时间段存在震荡波动；出现低能见度的日数随年际呈逐渐减少趋势；季节变化特点是低能见度多出现在秋冬季，春夏季较少主导能见度小于1 KM的天数逐年减少；能见度小于1 KM时出现的天数与气温的年际变化存在反相关性，与相对湿度、修正海平面气压存在正相关性；同时，年平均能见度与年平均气温存在一定的线性关系。
Based on the ground meteorological observation data of Mangshi Airport in Dehong from 2006 to 2020, this paper analyzes the characteristics of annual, interannual and daily changes of visibility, as well as the correlation between low visibility and meteorological elements such as temperature, relative humidity, corrected sea level pressure and weather phenomena. The results show that the annual variation of average visibility of Mangshi Airport is not obvious, and the overall trend is up-ward, with fluctuations in different time periods; the number of days with low visibility shows a gradually decreasing trend over the years; the characteristic of seasonal variation is that low visi-bility mostly occurs in autumn and winter, less in spring and summer, and the number of days with dominant visibility less than 1 KM decreases year by year; the number of days with visibility less than 1 KM has a negative correlation with the interannual variation of temperature and a positive correlation with relative humidity and corrected sea level pressure. At the same time, there is a linear relationship between annual average visibility and annual average temperature.