Simulated long-term evolution of the thermosphere during the Holocene – Part 2: Circulation and solar tides

Zhou, Xu; Yue, Xinan; Cai, Yihui; Ren, Zhipeng; Wei, Yong; Pan, Yongxin

doi:https://doi.org/10.5194/acp-23-6383-2023

Articles | Volume 23, issue 11

https://doi.org/10.5194/acp-23-6383-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Long-term changes and trends in the middle and upper...

https://doi.org/10.5194/acp-23-6383-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 11

Research article

|

12 Jun 2023

Research article |

| 12 Jun 2023

Simulated long-term evolution of the thermosphere during the Holocene – Part 2: Circulation and solar tides

Xu Zhou, Xinan Yue, Yihui Cai, Zhipeng Ren, Yong Wei, and Yongxin Pan

Data sets

EarthRef.org Digital Archive (ERDA) EarthRef https://earthref.org/ERDA/2207

International Geomagnetic Reference Field NOAA https://www.ngdc.noaa.gov/IAGA/vmod/igrf.html

NOAA/WDS Paleoclimatology - Law Dome Ice Core 2000-Year CO2, CH4, and N2O Data NOAA https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=noaa-icecore-9959

Trends in Atmospheric Carbon Dioxide NOAA https://gml.noaa.gov/ccgg/trends/data.html

Simulated Long-term Evolution of the Thermosphere during the Holocene: 1. Neutral Density and Temperature Y. Cai https://doi.org/10.17605/OSF.IO/ZQ8HY

NOAA/WDS Paleoclimatology - AICC2012 800KYr Antarctic Ice Core Chronology NOAA https://data.noaa.gov/dataset/dataset/noaa-wds-paleoclimatology-aicc2012-800kyr-antarctic-ice-core-chronology

Short summary

Secular variations in CO₂ concentration and geomagnetic field can affect the dynamics of the upper atmosphere. We examine how these two factors influence the dynamics of the upper atmosphere during the Holocene, using two sets of ~ 12 000-year control runs by the coupled thermosphere–ionosphere model. The main results show that (a) increased CO₂ enhances the thermospheric circulation, but non-linearly; and (b) geomagnetic variation induced a significant hemispheric asymmetrical effect.