Simulated long-term evolution of the thermosphere during the Holocene – Part 2: Circulation and solar tides
Abstract 2 concentration and geomagnetic field have the potential to affect thermospheric dynamics. In this paper, we investigate the thermospheric dynamical response to these two factors during the Holocene, using two sets of ∼ 12 000 -year control runs by the coupled thermosphere–ionosphere model, GCITEM-IGGCAS. The main results indicate that increased/decreased CO2 will enhance/weaken the thermospheric circulation throughout the Holocene, but this effect is non-linear. The cooling effect of CO2 in the thermosphere further provides plausible conditions for atmospheric tidal propagation and increases the thermospheric tidal amplitude. Geomagnetic variations induce hemispheric asymmetrical responses in the thermospheric circulation. Large changes in the circulation occur at high latitudes in the hemisphere with distant magnetic pole drift, inferring a crucial role of geomagnetic non-dipole variations in circulation changes. A positive correlation between the diurnal migrating tide (DW1) and geomagnetic dipole moment is revealed for the first time. The amplitude of DW1 in temperature will increase by ∼ 1 –3 K for each 1 × 10 22 2 increase in dipole moment.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Simulated long-term evolution of the thermosphere during the Holocene – Part 2: Circulation and solar tides ; volume:23 ; number:11 ; year:2023 ; pages:6383-6393 ; extent:11
Atmospheric chemistry and physics ; 23, Heft 11 (2023), 6383-6393 (gesamt 11)
- Urheber
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Zhou, Xu
Yue, Xinan
Cai, Yihui
Ren, Zhipeng
Wei, Yong
Pan, Yongxin
- DOI
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10.5194/acp-23-6383-2023
- URN
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urn:nbn:de:101:1-2023061504273417779099
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 10:45 MESZ
Datenpartner
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Beteiligte
- Zhou, Xu
- Yue, Xinan
- Cai, Yihui
- Ren, Zhipeng
- Wei, Yong
- Pan, Yongxin
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