Long-term trends in the stratosphere–mesosphere–thermosphere–ionosphere system
Long-term trends in the stratosphere–mesosphere–thermosphere–ionosphere system
Editor(s): Laura de la Torre (Universidade de Vigo, Spain), Ana G. Elias (National University of Tucumán, Argentina), Jan Laštovička (Czech Academy of Sciences, Czechia), Liying Qian (National Center for Atmospheric Research, United States), and Christoph Jacobi (Leipzig University, Germany)

The 12th International Workshop on Long-Term Changes and Trends in the Atmosphere (TRENDS 2024) took place from 6 to 10 May 2024 in Ourense, Galicia, Spain. Greenhouse gases and other drivers cause long-term changes and trends in the middle and upper atmosphere that are often much stronger than tropospheric trends. Long-term change in the upper atmosphere is a major consideration with respect to the safety and regulation of future constellations of low-Earth-orbit satellites and the accumulation of orbital debris. The TRENDS 2024 workshop covered, among others, the following topics:

  • long-term variations and trends in the middle atmosphere;
  • long-term changes and trends in the ionosphere and thermosphere;
  • dynamic, physical, chemical, solar, and radiative mechanisms of long-term variations and trends;
  • changes in the middle and upper atmosphere and links to satellite navigation and debris.

The special issue includes papers based on the workshop presentations as well as other original research papers related to the topic.

Review process: all papers of this special issue underwent the regular interactive peer-review process of Annales Geophysicae handled by members of the editorial board as well as guest editors designated by the ANGEO editors-in-chief.

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27 Sep 2024
Global long-term trends in the total electron content
Jaroslav Urbář and Jan Laštovička
EGUsphere, https://doi.org/10.5194/egusphere-2024-3021,https://doi.org/10.5194/egusphere-2024-3021, 2024
Preprint under review for ANGEO (discussion: open, 2 comments)
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20 Sep 2024
Revisiting the Sunspot Number as EUV proxy for ionospheric F2 critical frequency
Bruno S. Zossi, Franco D. Medina, Trinidad Duran, Blas F. de Haro Barbas, and Ana G. Elias
EGUsphere, https://doi.org/10.5194/egusphere-2024-2828,https://doi.org/10.5194/egusphere-2024-2828, 2024
Preprint under review for ANGEO (discussion: open, 1 comment)
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19 Aug 2024
Impact of different solar EUV proxies and Ap index on hmF2 trend analysis
Trinidad Duran, Bruno S. Zossi, Yamila D. Melendi, Blas F. de Haro Barbas, Fernando S. Buezas, and Ana G. Elías
EGUsphere, https://doi.org/10.5194/egusphere-2024-2479,https://doi.org/10.5194/egusphere-2024-2479, 2024
Revised manuscript accepted for ANGEO (discussion: final response, 4 comments)
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05 Aug 2024
Long-term changes in the dependence of NmF2 on solar flux at Juliusruh
Maria Gloria Tan Jun Rios, Claudia Borries, Huixin Liu, and Jens Mielich
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2024-11,https://doi.org/10.5194/angeo-2024-11, 2024
Preprint under review for ANGEO (discussion: final response, 8 comments)
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