Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 36, issue 2
Articles | Volume 36, issue 2
https://doi.org/10.5194/angeo-36-489-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-36-489-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 36, issue 2
Regular paper
 | 
22 Mar 2018
Regular paper |  | 22 Mar 2018

Seasonal variations of thermospheric mass density at dawn/dusk from GOCE observations

Libin Weng, Jiuhou Lei, Eelco Doornbos, Hanxian Fang, and Xiankang Dou

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Short summary
Thermospheric mass density from the GOCE satellite for Sun-synchronous orbits between 83.5° S and 83.5° N normalized to 270 km during 2009–2013 has been used to develop our GOCE model at dawn/dusk local solar time sectors based on the empirical orthogonal function (EOF) method. We find that both amplitude and phase of the seasonal variations have strong latitudinal and solar activity dependences, and the annual asymmetry and effect of the Sun–Earth distance vary with latitude and solar activity.
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