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2023 , Vol. 46 >Issue 3: 337 - 348

DOI: https://doi.org/10.12118/j.issn.1000-6060.2022.289

气候与水文

近60 a山西省极端气温事件的年际变化及其对区域增暖的响应

  • 李娜 ,
  • 武永利 ,
  • 赵桂香 ,
  • 钱锦霞 ,
  • 李芬 ,
  • 赵海英 ,
  • 韩普
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  • 1.山西省气象台，山西 太原 030006
    2.山西省气象灾害防御技术中心，山西 太原 030032
李娜（1985-），女，硕士，高级工程师，主要从事气候变化及气象灾害研究. E-mail: nali85@163.com

收稿日期: 2022-06-15

  修回日期: 2022-07-24

  网络出版日期: 2023-03-31

基金资助

中国气象局创新发展专项(CXFZ2021J052);山西省重点研发计划(201903D321006);山西省重点研发计划(20110311040-1)

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Interannual variations of extreme air temperature events and its response to regional warming in Shanxi Province in recent 60 years

  • Na LI ,
  • Yongli WU ,
  • Guixiang ZHAO ,
  • Jinxia QIAN ,
  • Fen LI ,
  • Haiying ZHAO ,
  • Pu HAN
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  • 1. Shanxi Meteorological Observatory, Taiyuan 030006, Shanxi, China
    2. Meteorological Disaster Prevention Technology Center of Shanxi Province, Taiyuan 030032, Shanxi, China

Received date: 2022-06-15

  Revised date: 2022-07-24

  Online published: 2023-03-31

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摘要

基于山西省境内70个气象站点的逐日最高气温、最低气温和平均气温资料，使用8个不同的极端气温指数分析其1960—2019年近60 a极端气温事件的变化特征，并分析其对气候变暖的响应。结果表明：（1） 夏季日数、热夜日数、日最低气温极大值、日最低气温极小值均呈显著增加趋势，冰冻日数、霜冻日数呈显著减少趋势。（2） 极端最高（低）气温的极大、极小值均上升，并且大部分地区极端气温的极小值增温幅度更大。（3） 山西省平均气温呈显著变暖趋势，平均每10 a增加0.26 ℃，空间上气温增幅呈从东南向西北逐渐增大的趋势。各极端气温指数对气候变暖具有较好的响应，其中霜冻日数对于山西省区域增暖的响应最显著，其次为日最低气温极大值。（4） 山西省半干旱区的日最低气温极小、极大值增温更快，冰冻日数减少速度快；半湿润区的热夜日数增加速度快，霜冻日数减少速度快。

关键词： 极端气温指数; 时空变化; 气候变化; 山西省

本文引用格式

李娜 , 武永利 , 赵桂香 , 钱锦霞 , 李芬 , 赵海英 , 韩普 . 近60 a山西省极端气温事件的年际变化及其对区域增暖的响应[J]. 干旱区地理, 2023 , 46(3) : 337 -348 . DOI: 10.12118/j.issn.1000-6060.2022.289

Abstract

Extreme temperature is an important indicator of climate change. Under the background of global warming, disaster events (warm winter, drought, and heat wave) caused by extreme temperature changes are also becoming increasingly frequent, which pose a serious threat to the ecological system and agricultural production. Therefore, studying and predicting the occurrence of extreme temperature events are particularly important. On the basis of the daily maximum, minimum, and average temperature data of 70 meteorological stations, eight extreme temperature indices were analyzed to obtain spatial and temporal variations of extreme temperature events, and their response to regional warming was examined in Shanxi Province, China, from 1960 to 2019. The following results are presented. (1) The occurrence of summer days, tropical nights, annual maximum value of daily minimum temperature, and annual minimum value of daily minimum temperature showed a significant upward trend, whereas the occurrence of ice and frost days showed a significant downward trend. (2) The annual maximum or minimum value of daily maximum and minimum temperatures showed warming trends, and the change rates of annual minimum value of daily maximum and minimum temperatures were large in most regions. (3) The annual average temperature in the study area presented a statistically significant increasing trend at a rate of 0.26 ℃·(10a)-1. The spatial distribution of the warming rate increased from southeast to northwest. The changes in extreme temperature indices demonstrated remarkably significant responses to climate warming. The responses of frost days and annual maximum value of daily minimum temperature to regional warming were highly sensitive. (4) In semiarid regions of Shanxi Province, the rising rate of annual maximum and minimum values of daily minimum temperature was large and ice days had a rapid reduction. In the semihumid area of Shanxi Province, tropical nights demonstrated rapid increase, whereas frost days revealed a rapid reduction.

Key words： extreme temperature indices; spatiotemporal variations; climate change; Shanxi Province

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