干旱区研究

干旱区研究 >

2019 , Vol. 36 >Issue 4: 980 - 989

DOI: https://doi.org/10.13866/j.azr.2019.04.23

天气与气候

吉林省降雪初终日时空变化特征

  • 王丽伟 ,
  • 黄晓龙 ,
  • 许晖 ,
  • 任景全 ,
  • 马云飞 ,
  • 刘玉英
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  • 1.吉林省气象信息网络中心,吉林 长春 130062;
    2.高原与盆地暴雨旱涝灾害四川省重点实验室,四川省气象探测数据中心,四川 成都 610072;
    3.吉林省气象科学研究所,吉林 长春 130062
王丽伟(1985-),女,工程师,研究方向为气候变化与陆面过程. E-mail:wangliwei211@126.com
刘玉英. E-mail: ccliuyuying@126.com

收稿日期: 2018-04-03

  修回日期: 2018-09-04

  网络出版日期: 2025-10-18

基金资助

国家自然科学基金“青藏高原热力强迫与印度洋的相互作用及其对亚洲夏季风的影响”(41605038);吉林省课题(201608)

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Spatiotemporal Change of the Beginning and Ending Dates of Snowfall in Jilin Province

  • WANG Li-wei ,
  • HUANG Xiao-long ,
  • XU Hui ,
  • REN Jing-quan ,
  • MA Yun-fei ,
  • LIU Yu-ying
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  • 1. Jilin Meteorological Information Centre,Changchun 130062,Jilin,China;
    2. Sichuan Province Key Laboratory of Rainstorm and Drought-flood Disasters in Plateau and Basin,Sichuan Meteorological Observation and Data Centre,Chengdu 610072,Sichuan,China;
    3. Jilin Institute of Meteorological Sciences,Changchun 130062,Jilin,China

Received date: 2018-04-03

  Revised date: 2018-09-04

  Online published: 2025-10-18

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摘要

利用吉林省1961—2015年逐日降水和天气现象资料,对降雪初、终日的时空变化特征进行了分析。结果表明:吉林省降雪平均日期始于10月22日,止于次年4月18日。降雪初、终日存在空间差异,东部山区开始早结束晚,西部平原开始晚结束早。降雪初、终日的空间第一模态为全省一致的偏早(晚)型,初日第二空间模态为南北反向型,终日第二向量场为东西反向型。初日集中在10、11月,以10月中旬出现概率最大,终日集中在3—5月,以4月中旬出现概率最大。初日存在8 a强显著周期,终日存在5 a强显著周期。降雪初、终日与大气环流有直接关系,初日推迟年西太平洋副高面积偏小、偏北,提前年副高面积偏大、偏南;终日推迟年副高面积偏小、偏南,提前年副高面积偏大、偏北。降雪初、终日还与地理环境有关,降雪初日随海拔的降低呈推迟趋势,终日则随着纬度升高和海拔降低呈提前趋势。

关键词： 降雪; 初始日期; 终止日期; 时空变化; 吉林

本文引用格式

王丽伟 , 黄晓龙 , 许晖 , 任景全 , 马云飞 , 刘玉英 . 吉林省降雪初终日时空变化特征[J]. 干旱区研究, 2019 , 36(4) : 980 -989 . DOI: 10.13866/j.azr.2019.04.23

Abstract

The spatiotemporal changes of the beginning and ending dates of snowfall in Jilin Province were analyzed based on the data of daily precipitation and weather phenomena during the period of 1961-2015. The results showed that there were the spatial differences of the beginning and ending dates of the snowfall in Jilin Province,the beginning time of snowfall in the eastern mountainous area was early but the ending time was late,the ending time of snowfall in the western plain was early but the beginning time was late,the average snowfall dates began on October 22 and ended on April 18 next year. The first spatial pattern of beginning and the ending dates of snowfall was the early (late) pattern in the whole province. The second spatial pattern of beginning dates were the north-south reverse pattern,and the second spatial pattern of ending dates was the east-west reverse pattern. The beginning dates of snowfall occurred mainly in October and November,especially in mid-October,and the ending dates occurred mainly in April and May,especially in mid-April. There was a significant 8-year period of beginning dates of snowfall and a significant 5-year period of ending dates. There was a direct relationship between the beginning and ending dates of snowfall and the atmospheric circulation,the area of the West Pacific subtropical high was smaller and farther northward in the late years of the beginning dates but larger and farther southward in the early years. The area of the West Pacific subtropical high was smaller and farther southward in the late years of the ending dates of snowfall but larger and farther northward in the early years. The beginning and the ending dates of snowfall were also related to the geographical factors,they delayed with the decrease of altitude,while the ending dates became earlier with the increase of latitude and the decrease of altitude.

Key words： snowfall; beginning date; ending date; spatiotemporal variation; Jilin Province

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