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Modelling of composition changes during F-region storms: a reassessment

Authors :
Space Physics Research Laboratory, University of Michigan, Ann Arbor, MI 48105, U.S.A.
Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, U.K.
Department of Physics, University of Southampton, Southampton SO9 5NH, U.K.
National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307, U.S.A.
Fuller-Rowell, T.J.
Rees, D.
Rishbeth, H.
Burns, A.G.
Killeen, Timothy L.
Roble, Raymond Gerald
Space Physics Research Laboratory, University of Michigan, Ann Arbor, MI 48105, U.S.A.
Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, U.K.
Department of Physics, University of Southampton, Southampton SO9 5NH, U.K.
National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307, U.S.A.
Fuller-Rowell, T.J.
Rees, D.
Rishbeth, H.
Burns, A.G.
Killeen, Timothy L.
Roble, Raymond Gerald
Publication Year :
2006

Abstract

A recalculation of the global changes of thermospheric gas composition, resulting from strong heat inputs in the auroral ovals, shows that (contrary to some previous suggestions) widespread increases of mean molecular mass are produced at mid-latitudes, in summer and at equinox. Decreases of mean molecular mass occur at mid-latitudes in winter. Similar results are given by both the `UCL' and `NCAR TIGCM' three-dimensional models. The computed composition changes now seem consistent with the local time and seasonal response observed by satellites, and can broadly account for `negative storm effects' in the ionospheric F2-layer at mid-latitudes.

Details

Database :
OAIster
Notes :
En_US
Publication Type :
Electronic Resource
Accession number :
edsoai.ocn894059496
Document Type :
Electronic Resource

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