冬季东岗、二道站点的最低气温对比及环流场形势分析  

Comparison of Minimum Temperature and Analysis of Circulation Field at Donggang and Erdao Stations in Winter

作　　者：程琳 王卓宁 王淇 王安琦 CHENG Lin(Changbai Mountain Chixi District Meteorological Bureau,Changbai Mountain,Jilin 134504)

机构地区：[1]长白山池西区气象局,吉林长白山134504 [2]白城市气象局,吉林白城137000 [3]长白山气象局,吉林长白山133613 [4]龙井市气象局,吉林延边133400

出　　处：《农业灾害研究》2022年第1期75-77,共3页Journal of Agricultural Catastrophology

摘　　要：通过统计分析长白山地区2个气象观测站2001—2015年冬季逐年、逐月、逐日的最低气温数值差异,总结了2个站15年之中冬季最低气温差异分布趋势。结果表明:最低气温差值存在2个波动阶段,分别为2001—2004年、2005—2015年;第一阶段差异明显大于第二阶段,二道地区出现极端性低温的天气概率明显大于东岗;形势场上日最低气温低温差异在7℃以上的天气模型分为3种类型,分别是脊型、浅槽型、西北气流型,其中脊型占比较大,为79.4%。Through statistical analysis of the year-on-year, month by month and day-to-day difference in winter minimum temperature between two meteorological stations in Changbai Mountain from 2001 to 2015, the distribution trend of winter minimum temperature difference between the two stations in 15 years was summarized. The results showed that there were two fluctuation stages of the lowest air temperature difference, namely, 2001-2004and 2005-2015. The difference in the first stage was significantly greater than that in the second stage, and the weather probability of extreme low temperature in Erdao area was significantly greater than that in Donggang.The weather models with daily minimum temperature and low temperature difference above 7℃ in the situation field were divided into three types: ridge type, shallow trough type and northwest air flow type, of which the ridge type accounted for 79.4%.

关 键 词：冬季最低气温 分布特征 分型 

分 类 号：P434[天文地球—大气科学及气象学]