First tristatic studies of meso-scale ion-neutral dynamics and energetics in the high-latitude upper atmosphere using collocated fpis and EISCAT radar

Aruliah, A. L. and Griffin, E. M. and McWhirter, I. and Aylward, A. D. and Ford, E. A. K. and Charalambous, A. and Kosch, M. J. and Davis, C. J. and Howells, V. S. C. (2004) First tristatic studies of meso-scale ion-neutral dynamics and energetics in the high-latitude upper atmosphere using collocated fpis and EISCAT radar. Geophysical Research Letters, 31 (3). pp. 1-4. ISSN 0094-8276

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Abstract

A unique experiment was undertaken during the nights of 27 and 28 February 2003. Tristatic Fabry-Perot Interferometer (FPI) measurements of the upper thermosphere were co-located with tristatic EISCAT radar measurements of the ionosphere. Tristatic measurements should remove assumptions of uniform wind fields and ion drifts, and zero vertical winds. The FPIs are located close to the 3 radars of the EISCAT configuration in northern Scandinavia. Initial studies indicate that the thermosphere is more dynamic and responsive to ionospheric forcing than expected. Mesoscale variations are observed on the scales of tens of kilometers and minutes. The magnitude of the upper thermosphere neutral wind dynamo field is on average 50% of the magnetospheric electric field and contributes an average magnitude of 41% of in-situ Joule heating. The relative orientations of the 2 dynamo field vectors produce a standard deviation of ±65% in the contribution of the neutral wind dynamo.

Item Type: Journal Article
Journal or Publication Title: Geophysical Research Letters
Additional Information: Copyright 2004 by the American Geophysical Union.
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/t1
Subjects:
Departments: Faculty of Science and Technology > School of Computing & Communications
Faculty of Science and Technology > Physics
Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 6633
Deposited By: ep_importer_dcs
Deposited On: 21 Apr 2008 11:07
Refereed?: Yes
Published?: Published
Last Modified: 18 Sep 2019 00:40
URI: https://eprints.lancs.ac.uk/id/eprint/6633

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