X img

官方微信

img

群号:冰川冻土交流群

QQ群:218834310

高级检索
作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2020, Vol. 42 ›› Issue (2): 430-438.doi: 10.7522/j.issn.1000-0240.2020.0035

• 冰冻圈与全球变化 • 上一篇    下一篇

吉林省季节冻土区年冻融指数的时空变化特征

任景全1(), 刘玉汐2, 王冬妮1, 王亮3, 孙月4, 郭春明1, 李琪5   

  1. 1.吉林省气象科学研究所, 吉林 长春 130062
    2.吉林省气象台, 吉林 长春 130062
    3.吉林省气候中心, 吉林 长春 130062
    4.吉林省气象探测保障中心, 吉林 长春 130062
    5.江苏省农业气象重点实验室, 江苏 南京 210044
  • 收稿日期:2018-06-11 修回日期:2018-12-12 出版日期:2020-08-31 发布日期:2020-09-11
  • 通讯作者: 郭春明 E-mail:renjingquan1988@126.com
  • 作者简介:任景全(1988 - ), 男, 内蒙古赤峰人, 工程师, 2013年在南京信息工程大学获硕士学位, 从事农业气象方向研究. E-mail: renjingquan1988@126.com
  • 基金资助:
    公益性行业(气象)科研专项(GYHY201206018);吉林省重点科技攻关项目(20150204014NY)

Spatiotemporal changes of annual freezing/thawing index of seasonally frozen soil in Jilin Province

Jingquan REN1(), Yuxi LIU2, Dongni WANG1, Liang WANG3, Yue SUN4, Chunming GUO1, Qi LI5   

  1. 1.Institute of Meteorological Science of Jilin Province,Changchun 130062,China
    2.Jilin Meteorological Observatory,Changchun 130062,China
    3.Jilin Climate Center,Changchun 130062,China
    4.Jilin Meteorological Detection Support Center,Changchun 130062,China
    5.Jiangsu Key Laboratory of Agricultural Meteorology,Nanjing 210044,China
  • Received:2018-06-11 Revised:2018-12-12 Online:2020-08-31 Published:2020-09-11
  • Contact: Chunming GUO E-mail:renjingquan1988@126.com

摘要:

利用1961 - 2015年吉林省46个气象站的气象数据, 采用气候诊断分析方法, 研究了吉林省季节冻土区年冻融指数的时空变化特征及其与经度、 纬度、 海拔的关系。结果表明: 吉林省冻结指数呈由北向南逐渐降低, 融化指数由西向东逐渐降低的趋势分布。1961 - 2015年冻结指数呈显著下降趋势, AFI(空气冻结指数)和SFI(地表冻结指数)气候倾向率分别为-48.7 ℃·d·(10a)-1和-166.8 ℃·d·(10a)-1。融化指数显著上升, ATI(空气融化指数)和STI(地表融化指数)分别以57.0 ℃·d·(10a)-1和93.7 ℃·d·(10a)-1的气候倾向率显著上升。SFIATISTI分别于2001年、 1994年和1997年发生了突变。20世纪60、 70年代冻结指数异常偏高, 融化指数异常偏低。吉林省年冻融指数的变化趋势在未来整体上依然延续下去, 即冻结指数为下降趋势, 融化指数为上升趋势。冻结指数受纬度影响最大, 随着纬度的升高而上升, 融化指数受海拔影响最大, 随着海拔的升高而显著下降。冻结指数气候倾向率随着海拔的升高而上升, 融化指数气候倾向率随着纬度的升高而上升。

关键词: 冻结指数, 融化指数, 季节冻土, 时空变化, 吉林省

Abstract:

Based on the meteorological data from 46 meteorological stations in Jilin Province from 1961 to 2015, the spatiotemporal changes of annual freezing/thawing index and its relationship with longitude, latitude, altitude were studied by the method of climatic diagnosis analysis in Jilin Province. The results showed that the freezing index had decreased gradually from north to south, and the thawing index had decreased from west to east in the province. The freezing index showed a significant downward trend, with the climatic tendency rates of AFI (air freezing index) of -48.7 ℃·d·(10a)-1 and SFI (surface freezing index) of -166.8 ℃·d·(10a)-1. The ATI (air thawing index) and STI (surface thawing index) increased significantly at 57 ℃·d·(10a)-1 and 93.7 ℃·d·(10a)-1, respectively. The SFIATI, and STI had mutated in 2001, 1994, and 1997, respectively. In the 1960s and 1970s, the freezing index was very high and the thawing index was extremely low. The trend of freezing thawing index in the future was consistent with the past, when the freezing index had an downward trend and the thawing index had an upward trend. The freezing index was mainly affected by latitude and increased with the rise of latitude. The thawing index was mainly affected by altitude and decreased significantly with the rise of altitude. The climatic tendency of freezing index increased with the rise of altitude, and the climate tendency of the thawing index increased with the rise of latitude.

Key words: freezing index, thawing index, seasonally frozen soil, spatiotemporal change, Jilin Province

中图分类号: 

  • P642.14