摘要
利用鄂托克前旗1980—2018年逐日最低气温,对近39年寒潮的时间分布特征、影响进行研究。分析结果表明:24 h单站寒潮发生过程次数和48 h相差不大,但48 h寒潮强于24 h寒潮;且48 h强寒潮过程和特强寒潮过程次数均多于24 h强寒潮过程;鄂托克前旗地区寒潮出现的时间段为9月底—翌年6月初,只有7—8月无寒潮灾害发生;寒潮过程的年际变化呈震荡波动趋势,且1980—2001年年均过程次数略高于2002年之后的平均值,寒潮的发生在暖冬趋势中略减少,但峰值与谷值之间的差值在变大。
Using the daily minimum temperature in Etuokeqianqi from 1980 to 2018,the time distribution characteristics and influence of cold waves in the past 39 years were studied.The analysis results show that the number of cold waves occurring at a single station in 24 hours is not much different from that in 48 hours,but the 48-hour cold wave is stronger than the 24-hour cold wave;and the frequency of the 48-hour strong cold wave process and the very strong cold wave process are more than that of the 24-hour strong cold wave process.The cold wave occurred in the Etuokeqianqi area from the end of September to the beginning of June of the following year,and there was no cold wave disaster from July to August.The inter-annual variation of the cold wave process shows an oscillating trend,and the average number of processes from 1980 to 2001 is slightly higher than the average after 2002.The occurrence of cold wave decreases slightly in the warm winter trend,but the difference between the peak value and the valley value is Get bigger.
作者
黄建和
HUANG Jian-he(Meteorological Bureau of Etuoke Qianqi,Ordos,Inner Mongolia 016200)
出处
《农业灾害研究》
2021年第1期132-133,共2页
Journal of Agricultural Catastrophology
关键词
寒潮
日最低气温
时间分布
鄂托克前旗
cold wave
Daily minimum temperature
Time distribution
Etuoke Qianqi
