2023年1月延吉机场气温异常偏高成因分析

Analysis of the causes of abnormal high temperature at Yanji Airport in January 2023

2023-01-10/01-13延吉机场12:00-15:00气温异常偏高至超过0℃,最高气温在11日13:18达到3.8℃,造成机场内及跑道两侧的积雪部分融化后再次冻结成薄冰,给机场运行带来一定的隐患。文章利用延吉机场2012-2022年1月自观每小时气温大数据和2023-01-11前后的天气形势进行分析,结果表明:1)2023年1月平均气温和最高气温呈波浪式变化趋势;2)2023-01-10/01-13天气形势有利于下沉增温是造成气温异常偏高的原因之一;3)2023-01-10/01-13的天气环流形势使得东亚冬季风活动减弱和风速发生了异常变化,导致气温异常偏高。

From January 10 to 13,2023,the temperature at Yanji Airport at 12:00-15:00 was abnormally high to more than 0℃.The highest temperature reached 3.8℃at13:18 on the 11th.It causes the snow in the airport and on both sides of the runway to melt and freeze into thin ice again,which brings certain hidden dangers to the airport operation.This paper analyzes the hourly temperature data of Yanji Airport from January 2012 to January 2022 and the weather situation around January 11,2023 by using the big data of hourly temperature.The results show that the average temperature and maximum temperature in January 2023 show a wave-like trend.From January 10 to 13,2023,the weather situation is conducive to sinking and warming,which is one of the reasons for the abnormal high temperature.From January 10 to 13,2023,the weather circulation situation weakened the East Asian winter monsoon activity and the wind speed changed abnormally,resulting in abnormal high temperature.