Turbulence Characteristics Analysis of Aircraft Air Reports in North China over the Past Five Years
This article selects the turbulence reports data from 2018 to 2023 in North China and conducts statistical analysis of air turbulence over this region.The study finds that:the annual turbulence frequency in North China shows a fluctuating trend,with the highest in 2020 and the lowest in 2022,there are more turbulence events in autumn,winter and spring,while fewer in summer;there is a certain positive correlation between the number of recorded turbulence events and flight volume,the time period with the least number of reports is 0-6 am and the two peak periods of turbulence are 7-9 am and 0-2 pm,the daily distribution of turbulence intensity also shows at 8 am and 1 pm,moderate and severe turbulence events reach the peak;the impact system of turbulence in the entire North China region is mainly composed of jet streams,high-altitude troughs and convective clouds,with a small number of low eddies,cold fronts and shear lines,jet stream is the weather system that causes the most turbulence,and the impact of jet streams and convective clouds on turbulence is seasonally inversely correlated;in terms of spatial distribution,the most turbulences occur on the air routes in the central southern and southwestern parts of North China,mainly concentrated near Taiyuan,Changzhi,Weixian,Hengshui and Shijiazhuang,with a small amount distributed in the western and northern parts of North China;the most frequent occurrence of turbulence is in the altitude range of 8-9 km,followed by 9-11 km,altitude above 8 km accounts for half of the total,in the middle and low altitude range,turbulence occurs more frequently in the range of 3-5 km,the number of moderate turbulences far exceeds that of severe turbulences in each altitude range.The average proportion of moderate turbulence is about 75％.
aircraft turbulenceaircraft air reportsspatiotemporal distribution characteristicsturbulence intensity
NETL
NSTL
万方数据
