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A reversal of upper-air wind speed in the Northern Hemisphere

Haojie Wu Haipeng Yu Xin Wang Shanling Cheng Yunsai Zhu Hongyu Luo

大气和海洋科学快报（英文版）2025，Vol.18Issue(6)：49-57,9.
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大气和海洋科学快报（英文版）2025，Vol.18Issue(6)：49-57,9.DOI:10.1016/j.aosl.2025.100616

A reversal of upper-air wind speed in the Northern Hemisphere

A reversal of upper-air wind speed in the Northern Hemisphere

Haojie Wu 1Haipeng Yu 2Xin Wang 3Shanling Cheng 1Yunsai Zhu 4Hongyu Luo1

作者信息

  • 1. State Key Laboratory of Cryospheric Science and Frozen Soil Engineering,Nagqu Plateau Climate and Environment Observation and Research Station of Tibet Autonomous Region,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,China||University of Chinese Academy of Sciences,Beijing,China
  • 2. State Key Laboratory of Cryospheric Science and Frozen Soil Engineering,Nagqu Plateau Climate and Environment Observation and Research Station of Tibet Autonomous Region,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,China
  • 3. College of Earth and Environmental Sciences,Lanzhou University,Lanzhou,China
  • 4. College of Atmospheric Sciences,Lanzhou University,Lanzhou,China
  • 折叠

摘要

Abstract

以往研究表明,全球近地面风速已从下降趋势转为上升趋势;然而目前尚不清楚高空风速是否也出现了类似的逆转.本研究发现北半球冬季高空风速在2010年前后也存在逆转现象,且该现象在中纬度和副热带之间形成了偶极子模态.从1990年到2010年,中纬度地区的高空风速显著减弱,而副热带地区则表现为增强趋势;在2010-2020年期间,风速呈现出相反的趋势.进一步分析表明,这一逆转现象与热带非绝热加热和中纬度瞬变涡旋反馈所驱动的低层斜压性异常密切相关.值得注意的是,高空风速的逆转可能通过动量下传机制影响近地面风速,这为解释同期地面风速的趋势逆转提供了参考依据.

关键词

高空风速/风速变化/趋势逆转/非绝热加热/瞬变涡旋

Key words

Upper-air wind/Wind speed variation/Trend reversal/Transient eddy/Diabatic heating

引用本文复制引用

Haojie Wu,Haipeng Yu,Xin Wang,Shanling Cheng,Yunsai Zhu,Hongyu Luo..A reversal of upper-air wind speed in the Northern Hemisphere[J].大气和海洋科学快报（英文版）,2025,18(6):49-57,9.

基金项目

This work was jointly supported by the National Natural Science Foundation of China[grant numbers U2442207,42122034,42075043,and 42330609],the Youth Innovation Promotion Association[grant number 2021427],the West Light Foundation[grant number xbzg-zdsys-202409]of the Chinese Academy of Sciences,the Key Talent Projects in Gansu Province,and the Central Guidance Fund for Local Science and Technology Development Projects in Gansu Province[grant number 24ZYQA031]. （）

大气和海洋科学快报（英文版）

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