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A statistical survey of electron temperature enhancements in heater modulated polar mesospheric summer echoes at EISCAT

Routledge, G. and Kosch, M.J. and Senior, A. and Kavanagh, A.J. and McCrea, I.W. and Rietveld, M.T. (2011) A statistical survey of electron temperature enhancements in heater modulated polar mesospheric summer echoes at EISCAT. Journal of Atmospheric and Solar-Terrestrial Physics, 73 (4). pp. 472-482. ISSN 1364-6826

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Abstract

A statistical analysis has been made of 26 Polar Mesospheric Summer Echoes (PMSE) active modulation experiments between 2002 and 2007. Observed with the EISCAT VHF radar the PMSE signature can be reduced by means of heating the ionosphere with powerful high frequency (HF) radio waves. However, PMSE modulation experiments sometimes fail. We use a computational model to estimate the enhanced electron temperatures due to ionospheric heating from HF radio waves in the D-region. We show that the statistical PMSE modulation for a fixed HF heater-induced electron temperature enhancement appears to be independent of altitude. In addition, for experiments where the PMSE modulation experiment failed, we show that the atmospheric attenuation of the HF heater wave was too great for the HF wave to have any effect on the PMSE layer.

Item Type: Article
Journal or Publication Title: Journal of Atmospheric and Solar-Terrestrial Physics
Uncontrolled Keywords: eiscat DCS-publications-id ; art-1022 ; DCS-publications-credits ; iono-fa ; DCS-publications-personnel-id ; 93 ; 7 ; 51 ; 9
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > School of Computing & Communications
Faculty of Science and Technology > Physics
ID Code: 39706
Deposited By: Dr Steve Marple
Deposited On: 14 Feb 2011 13:37
Refereed?: Yes
Published?: Published
Last Modified: 23 Apr 2014 17:21
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/39706

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