影响红河州的昆明准静止锋时空分布特征

ANALYSIS OF THE TEMPORAL AND SPATIAL DISTRIBUTION OF KUNMING QUASI-STATIONARY FRONT IN HONGHE STATE

基于1980-2018年MICAPS和ec的ERA-Interim资料,分析影响红河州的昆明准静止锋日数,研究其时空分布特征,采用Mann-Kendall法和滑动t检验进行突变分析,用小波分析方法进行周期分析。结果表明:红河州全年都有准静止锋活动,平均每年有93.6天受准静止锋的影响,有增加的趋势,冬季影响频次最高,秋季次之,夏季最少;东北部、东南部受影响最多,西部较少;准静止锋逐年影响日数存在突变和周期变化特征。

Based on the MICAPS data from 1980 to 2018,the characteristics of the temporal and spatial were analyzed of the annual days of Kunming quasi-stationary front(KQSF)that affect Honghe State.The Mann Kendall method and sliding t-test were used to analyze the catastrophe and the wavelet method was used to analyze the period.On average, the days affected by the KQSF in Honghe State were 93.6 per year and showed an increasing trend.The KQSF occurred all year round, which appeared most in winter, followed by autumn, and least in summer.The northeast and southeast of Honghe State were most affected.The western region had a low presence of KQSF.The Annual days of KQSF had the characteristics of mutation periodicity.