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Copyright Copernicus GmbH 2011

Abstract

Orbit-averaged mass density measurements derived from the satellites CHAMP and GRACE are used to investigate the storm-time prediction model developed by Liu et al. (2010) at different altitudes. This model uses as input only the solar wind merging electric field. From 2002 to 2005 in total 31 major geomagnetic storms with minimum Dsta between merging electric field and mass density for CHAMP altitude remains basically at the same level, a=0.5, while the a for GRACE density shows a declining trend, and its value is only 30% of that for CHAMP density. The storms driven by corotating interaction regions (CIR) have in general larger a values than the storms driven by coronal mass ejections (CMEs).

Details

Title
Predicting storm-time thermospheric mass density variations at CHAMP and GRACE altitudes
Author
Liu, R.; Ma, S.-Y.; Lühr, H.
First page
443
Publication year
2011
Publication date
2011
Publisher
Copernicus GmbH
ISSN
0992-7689
e-ISSN
14320576
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
860920184
Copyright
Copyright Copernicus GmbH 2011