Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 33, issue 4
Articles | Volume 33, issue 4
https://doi.org/10.5194/angeo-33-449-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-33-449-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 33, issue 4
Regular paper
 | 
08 Apr 2015
Regular paper |  | 08 Apr 2015

Global variation in the long-term seasonal changes observed in ionospheric F region data

C. J. Scott and R. Stamper

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Short summary
We use a novel technique to infer long-term compositional changes to the thermosphere from the annual variation of the ionospheric F2 region. A global analysis of these data reveal that long-term changes differ between geographic locations in a way that is very similar to the observed variation in the ionospheric response to increased atmospheric CO2 levels. In the absence of long-term measurements of thermospheric composition, further, detailed, modelling work is required.
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