Observing mesospheric gravity waves with an imaging riometer.
Gravity waves play an important role in determining the structure and dynamics of the mesopause region. In this study the Imaging Riometer for Ionospheric Studies (IRIS) at Halley, Antarctica (76S, 27W) is shown to be capable of detecting short period mesospheric gravity waves using fluctuations of...
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ftnerc:oai:nora.nerc.ac.uk:6569 2023-05-15T14:05:16+02:00 Observing mesospheric gravity waves with an imaging riometer. Moffat-Griffin, T. Hibbins, R.E. Nielsen, K. Jarvis, M.J. Taylor, M.J. 2008 text http://nora.nerc.ac.uk/id/eprint/6569/ https://nora.nerc.ac.uk/id/eprint/6569/1/final.pdf https://doi.org/10.1016/j.jastp.2008.04.009 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/6569/1/final.pdf Moffat-Griffin, T. orcid:0000-0002-9670-6715 Hibbins, R.E. orcid:0000-0002-6867-2255 Nielsen, K.; Jarvis, M.J.; Taylor, M.J. 2008 Observing mesospheric gravity waves with an imaging riometer. Journal of Atmospheric and Solar-Terrestrial Physics, 70 (10). 1327-1335. https://doi.org/10.1016/j.jastp.2008.04.009 <https://doi.org/10.1016/j.jastp.2008.04.009> Physics Atmospheric Sciences Publication - Article PeerReviewed 2008 ftnerc https://doi.org/10.1016/j.jastp.2008.04.009 2023-02-04T19:24:21Z Gravity waves play an important role in determining the structure and dynamics of the mesopause region. In this study the Imaging Riometer for Ionospheric Studies (IRIS) at Halley, Antarctica (76S, 27W) is shown to be capable of detecting short period mesospheric gravity waves using fluctuations of the ionospheric absorption of cosmic radio noise as a tracer. An analysis technique for quantifying these signatures is presented. The extraction of the wave period, horizontal phase speed and horizontal wavelength is demonstrated by applying wavelet analysis to synthetic imaging riometer absorption data, which contain known wave features. A mechanism to overcome the limitation on resolvable wavelengths is presented. The effect of noise on the analysis results is also discussed. The application of this technique to extract gravity wave parameters from imaging riometer data is demonstrated by comparison with those derived from a co-located airglow imager. Extension of this technique could, in future, enable a climatology of year round mesospheric gravity wave properties over Antarctica to be derived. It will also enable further gravity wave climatological studies to be performed using other imaging riometer datasets around the world. Article in Journal/Newspaper Antarc* Antarctica Natural Environment Research Council: NERC Open Research Archive Journal of Atmospheric and Solar-Terrestrial Physics 70 10 1327 1335 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
topic |
Physics Atmospheric Sciences |
spellingShingle |
Physics Atmospheric Sciences Moffat-Griffin, T. Hibbins, R.E. Nielsen, K. Jarvis, M.J. Taylor, M.J. Observing mesospheric gravity waves with an imaging riometer. |
topic_facet |
Physics Atmospheric Sciences |
description |
Gravity waves play an important role in determining the structure and dynamics of the mesopause region. In this study the Imaging Riometer for Ionospheric Studies (IRIS) at Halley, Antarctica (76S, 27W) is shown to be capable of detecting short period mesospheric gravity waves using fluctuations of the ionospheric absorption of cosmic radio noise as a tracer. An analysis technique for quantifying these signatures is presented. The extraction of the wave period, horizontal phase speed and horizontal wavelength is demonstrated by applying wavelet analysis to synthetic imaging riometer absorption data, which contain known wave features. A mechanism to overcome the limitation on resolvable wavelengths is presented. The effect of noise on the analysis results is also discussed. The application of this technique to extract gravity wave parameters from imaging riometer data is demonstrated by comparison with those derived from a co-located airglow imager. Extension of this technique could, in future, enable a climatology of year round mesospheric gravity wave properties over Antarctica to be derived. It will also enable further gravity wave climatological studies to be performed using other imaging riometer datasets around the world. |
format |
Article in Journal/Newspaper |
author |
Moffat-Griffin, T. Hibbins, R.E. Nielsen, K. Jarvis, M.J. Taylor, M.J. |
author_facet |
Moffat-Griffin, T. Hibbins, R.E. Nielsen, K. Jarvis, M.J. Taylor, M.J. |
author_sort |
Moffat-Griffin, T. |
title |
Observing mesospheric gravity waves with an imaging riometer. |
title_short |
Observing mesospheric gravity waves with an imaging riometer. |
title_full |
Observing mesospheric gravity waves with an imaging riometer. |
title_fullStr |
Observing mesospheric gravity waves with an imaging riometer. |
title_full_unstemmed |
Observing mesospheric gravity waves with an imaging riometer. |
title_sort |
observing mesospheric gravity waves with an imaging riometer. |
publisher |
Elsevier |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/6569/ https://nora.nerc.ac.uk/id/eprint/6569/1/final.pdf https://doi.org/10.1016/j.jastp.2008.04.009 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://nora.nerc.ac.uk/id/eprint/6569/1/final.pdf Moffat-Griffin, T. orcid:0000-0002-9670-6715 Hibbins, R.E. orcid:0000-0002-6867-2255 Nielsen, K.; Jarvis, M.J.; Taylor, M.J. 2008 Observing mesospheric gravity waves with an imaging riometer. Journal of Atmospheric and Solar-Terrestrial Physics, 70 (10). 1327-1335. https://doi.org/10.1016/j.jastp.2008.04.009 <https://doi.org/10.1016/j.jastp.2008.04.009> |
op_doi |
https://doi.org/10.1016/j.jastp.2008.04.009 |
container_title |
Journal of Atmospheric and Solar-Terrestrial Physics |
container_volume |
70 |
container_issue |
10 |
container_start_page |
1327 |
op_container_end_page |
1335 |
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1766277079797596160 |