A Case Study of Thermospheric Exospheric Temperature Responses During the G-Condition at Mohe and Beijing Stations

IF 2.9 2区地球科学 Q2 ASTRONOMY & ASTROPHYSICS Journal of Geophysical Research: Space Physics Pub Date : 2024-10-07 DOI:10.1029/2024JA032653

Shaoyang Li, Zhipeng Ren, Tingting Yu, Biqiang Zhao, Libo Liu, Guozhu Li, Xinan Yue, Yong Wei, Lianhuan Hu

{"title":"A Case Study of Thermospheric Exospheric Temperature Responses During the G-Condition at Mohe and Beijing Stations","authors":"Shaoyang Li, Zhipeng Ren, Tingting Yu, Biqiang Zhao, Libo Liu, Guozhu Li, Xinan Yue, Yong Wei, Lianhuan Hu","doi":"10.1029/2024JA032653","DOIUrl":null,"url":null,"abstract":"The G-condition (NmF2 ≤ NmF1) was observed by ground-based ionosondes at Mohe and Beijing during the geomagnetic storm occurred on 23 and 24 April 2023. We studied exospheric temperature (Tex) responses during the G-condition. Tex was derived from electron density (Ne) profiles (∼150–200 km) by the method proposed by Li et al. (2023, https://doi.org/10.1029/2022ja030988). The retrieved Tex showed obvious enhancements, with relative deviation of ∼10%–35% and ∼3%–20% at Mohe and Beijing, respectively. Additionally, chemical reaction rate increased by ∼15%–100% and ∼13%–30%, and O/N2 decreased by ∼17%–35% and ∼23%–30% at Mohe and Beijing, respectively. Under photochemical equilibrium assumption, peak Ne is inversely proportional to chemical reaction rate and proportional to O/N2. Increased chemical reaction rate and decreased O/N2 indicate a decrease in peak Ne. Compared to the increased Tex, the relative enhancement in Tex is more significantly associated with the G-condition, with relative deviation above ∼10% during the G-condition.","PeriodicalId":15894,"journal":{"name":"Journal of Geophysical Research: Space Physics","volume":"129 10","pages":""},"PeriodicalIF":2.9000,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Geophysical Research: Space Physics","FirstCategoryId":"89","ListUrlMain":"https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024JA032653","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}

引用次数: 0

Abstract

The G-condition (NmF₂ ≤ NmF₁) was observed by ground-based ionosondes at Mohe and Beijing during the geomagnetic storm occurred on 23 and 24 April 2023. We studied exospheric temperature (Tex) responses during the G-condition. Tex was derived from electron density (Ne) profiles (∼150–200 km) by the method proposed by Li et al. (2023, https://doi.org/10.1029/2022ja030988). The retrieved Tex showed obvious enhancements, with relative deviation of ∼10%–35% and ∼3%–20% at Mohe and Beijing, respectively. Additionally, chemical reaction rate increased by ∼15%–100% and ∼13%–30%, and O/N₂ decreased by ∼17%–35% and ∼23%–30% at Mohe and Beijing, respectively. Under photochemical equilibrium assumption, peak Ne is inversely proportional to chemical reaction rate and proportional to O/N₂. Increased chemical reaction rate and decreased O/N₂ indicate a decrease in peak Ne. Compared to the increased Tex, the relative enhancement in Tex is more significantly associated with the G-condition, with relative deviation above ∼10% during the G-condition.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

漠河站和北京站 G 条件期间热层外层温度响应案例研究

在 2023 年 4 月 23 日和 24 日发生的地磁暴期间，漠河和北京的地基电离层探测仪观测到了 G 条件（NmF2 ≤ NmF1）。我们研究了地磁条件下大气层外温度（Tex）的响应。Tex是根据电子密度（Ne）剖面（∼150-200 km），按照Li等人（2023，https://doi.org/10.1029/2022ja030988）提出的方法得出的。获取的 Tex 值明显增强，在漠河和北京的相对偏差分别为 10%～35%和 3%～20%。此外，漠河和北京的化学反应速率分别增加了 15%～100%和 13%～30%，O/N2 分别减少了 17%～35%和 23%～30%。在光化学平衡假设下，峰值 Ne 与化学反应速率成反比，与 O/N2 成正比。化学反应速率的增加和 O/N2 的降低表明 Ne 峰值的降低。与 Tex 的增加相比，Tex 的相对增加与 G 条件的关系更为显著，在 G 条件下，Tex 的相对偏差超过 ∼10%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊