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First modulation of high‐frequency polar mesospheric summer echoes by radio heating of the ionosphere
Author(s) -
Senior A.,
Mahmoudian A.,
Pinedo H.,
La Hoz C.,
Rietveld M. T.,
Scales W. A.,
Kosch M. J.
Publication year - 2014
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2014gl060703
Subject(s) - ionosphere , polar , high frequency , atmospheric sciences , wavelength , plasma , environmental science , radar , physics , modulation (music) , incoherent scatter , radio frequency , radio wave , computational physics , geophysics , optics , astronomy , telecommunications , quantum mechanics , computer science , acoustics
The first high‐frequency (HF, 8 MHz) observations of the modulation of polar mesospheric summer echoes (PMSE) by artificial radio heating of the ionosphere are presented and compared to observations at 224 MHz and model predictions. The experiments were performed at the European Incoherent Scatter facility in northern Norway. It is shown that model results are in qualitative and partial quantitative agreement with the observations, supporting the prediction that with certain ranges of ice particle radii and concentration, PMSE at HF radar wavelengths can be enhanced by heating due to the dominance of dust charging over plasma diffusion.