Arctic and Antarctic polar mesosphere summer echoes observed with oblique incidence HF radars: analysis using simultaneous MF and VHF radar data
Polar mesosphere summer echoes (PMSEs) have been well studied using vertical incidence VHF radars at northern high-latitudes. In this paper, two PMSE events detected with the oblique incidence SuperDARN HF radars at Hankasalmi, Finland (62.3° N) and Syowa Station, Antarctica (69.0° S), are analyzed,...
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European Geosciences Union (EGU), Copernicus Publications, Springer Verlag (Germany)
2016
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ftleicester:oai:lra.le.ac.uk:2381/36460 2023-05-15T14:03:42+02:00 Arctic and Antarctic polar mesosphere summer echoes observed with oblique incidence HF radars: analysis using simultaneous MF and VHF radar data Ogawa, T. Nozawa, S. Tsutsumi, M. Arnold, N. F. Nishitani, N. Sato, N. Yukimatu, A. S. 2016-01-29T17:45:32Z http://www.ann-geophys.net/22/4049/2004/ http://hdl.handle.net/2381/36460 https://doi.org/10.5194/angeo-22-4049-2004 en eng European Geosciences Union (EGU), Copernicus Publications, Springer Verlag (Germany) Annales Geophysicae 22, 4049-4059, 2004 0992-7689 http://www.ann-geophys.net/22/4049/2004/ http://hdl.handle.net/2381/36460 doi:10.5194/angeo-22-4049-2004 1432-0576 © Author(s) 2004. This work is distributed under the Creative Commons Attribution 3.0 License. CC-BY Meteorology and atmospheric dynamics (middle atmosphere dynamics thermospheric dynamics waves and tides) Journal Article 2016 ftleicester https://doi.org/10.5194/angeo-22-4049-2004 2019-03-22T20:21:26Z Polar mesosphere summer echoes (PMSEs) have been well studied using vertical incidence VHF radars at northern high-latitudes. In this paper, two PMSE events detected with the oblique incidence SuperDARN HF radars at Hankasalmi, Finland (62.3° N) and Syowa Station, Antarctica (69.0° S), are analyzed, together with simultaneous VHF and medium-frequency (MF) radar data. Altitude resolutions of the HF radars in the mesosphere and the lower thermosphere are too poor to know exact PMSE altitudes. However, a comparison of Doppler velocity from the HF radar and neutral wind velocity from the MF radar shows that PMSEs at the HF band appeared at altitudes within 80-90km, which are consistent with those from previous vertical incidence HF-VHF radar results. The HF-VHF PMSE occurrences exhibit a semidiurnal behavior, as observed by other researchers. It is found that in one event, PMSEs occurred when westward semidiurnal winds with large amplitude at 85-88km altitudes attained a maximum. When the HF-VHF PMSEs were observed at distances beyond 180km from MF radar sites, the MF radars detected no appreciable signatures of echo enhancement. N. F. Arnold was supported by an advanced fellowship from the UK Particle Physics and Astronomy Research Council. Peer-reviewed Publisher Version Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic University of Leicester: Leicester Research Archive (LRA) Arctic Antarctic Syowa Station Annales Geophysicae 22 12 4049 4059 |
institution |
Open Polar |
collection |
University of Leicester: Leicester Research Archive (LRA) |
op_collection_id |
ftleicester |
language |
English |
topic |
Meteorology and atmospheric dynamics (middle atmosphere dynamics thermospheric dynamics waves and tides) |
spellingShingle |
Meteorology and atmospheric dynamics (middle atmosphere dynamics thermospheric dynamics waves and tides) Ogawa, T. Nozawa, S. Tsutsumi, M. Arnold, N. F. Nishitani, N. Sato, N. Yukimatu, A. S. Arctic and Antarctic polar mesosphere summer echoes observed with oblique incidence HF radars: analysis using simultaneous MF and VHF radar data |
topic_facet |
Meteorology and atmospheric dynamics (middle atmosphere dynamics thermospheric dynamics waves and tides) |
description |
Polar mesosphere summer echoes (PMSEs) have been well studied using vertical incidence VHF radars at northern high-latitudes. In this paper, two PMSE events detected with the oblique incidence SuperDARN HF radars at Hankasalmi, Finland (62.3° N) and Syowa Station, Antarctica (69.0° S), are analyzed, together with simultaneous VHF and medium-frequency (MF) radar data. Altitude resolutions of the HF radars in the mesosphere and the lower thermosphere are too poor to know exact PMSE altitudes. However, a comparison of Doppler velocity from the HF radar and neutral wind velocity from the MF radar shows that PMSEs at the HF band appeared at altitudes within 80-90km, which are consistent with those from previous vertical incidence HF-VHF radar results. The HF-VHF PMSE occurrences exhibit a semidiurnal behavior, as observed by other researchers. It is found that in one event, PMSEs occurred when westward semidiurnal winds with large amplitude at 85-88km altitudes attained a maximum. When the HF-VHF PMSEs were observed at distances beyond 180km from MF radar sites, the MF radars detected no appreciable signatures of echo enhancement. N. F. Arnold was supported by an advanced fellowship from the UK Particle Physics and Astronomy Research Council. Peer-reviewed Publisher Version |
format |
Article in Journal/Newspaper |
author |
Ogawa, T. Nozawa, S. Tsutsumi, M. Arnold, N. F. Nishitani, N. Sato, N. Yukimatu, A. S. |
author_facet |
Ogawa, T. Nozawa, S. Tsutsumi, M. Arnold, N. F. Nishitani, N. Sato, N. Yukimatu, A. S. |
author_sort |
Ogawa, T. |
title |
Arctic and Antarctic polar mesosphere summer echoes observed with oblique incidence HF radars: analysis using simultaneous MF and VHF radar data |
title_short |
Arctic and Antarctic polar mesosphere summer echoes observed with oblique incidence HF radars: analysis using simultaneous MF and VHF radar data |
title_full |
Arctic and Antarctic polar mesosphere summer echoes observed with oblique incidence HF radars: analysis using simultaneous MF and VHF radar data |
title_fullStr |
Arctic and Antarctic polar mesosphere summer echoes observed with oblique incidence HF radars: analysis using simultaneous MF and VHF radar data |
title_full_unstemmed |
Arctic and Antarctic polar mesosphere summer echoes observed with oblique incidence HF radars: analysis using simultaneous MF and VHF radar data |
title_sort |
arctic and antarctic polar mesosphere summer echoes observed with oblique incidence hf radars: analysis using simultaneous mf and vhf radar data |
publisher |
European Geosciences Union (EGU), Copernicus Publications, Springer Verlag (Germany) |
publishDate |
2016 |
url |
http://www.ann-geophys.net/22/4049/2004/ http://hdl.handle.net/2381/36460 https://doi.org/10.5194/angeo-22-4049-2004 |
geographic |
Arctic Antarctic Syowa Station |
geographic_facet |
Arctic Antarctic Syowa Station |
genre |
Antarc* Antarctic Antarctica Arctic |
genre_facet |
Antarc* Antarctic Antarctica Arctic |
op_relation |
Annales Geophysicae 22, 4049-4059, 2004 0992-7689 http://www.ann-geophys.net/22/4049/2004/ http://hdl.handle.net/2381/36460 doi:10.5194/angeo-22-4049-2004 1432-0576 |
op_rights |
© Author(s) 2004. This work is distributed under the Creative Commons Attribution 3.0 License. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/angeo-22-4049-2004 |
container_title |
Annales Geophysicae |
container_volume |
22 |
container_issue |
12 |
container_start_page |
4049 |
op_container_end_page |
4059 |
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1766274519929978880 |