Occurrence and characteristics of high-latitude mesospheric echoes at MF: observations by Halley and Tromso dynasondes
The dynasonde at Halley, Antarctica, is operated throughout the year making ionogram soundings every five minutes. The extensive database of observations from 1993 and 1994 has been processed to investigate ionogram echoes from mesospheric heights. The occurrence of these echoes shows a very clear s...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/504100/ https://doi.org/10.1016/S1364-6826(98)00010-8 |
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ftnerc:oai:nora.nerc.ac.uk:504100 2023-05-15T13:48:08+02:00 Occurrence and characteristics of high-latitude mesospheric echoes at MF: observations by Halley and Tromso dynasondes Jones, G.O.L. Davis, C.J. 1998 http://nora.nerc.ac.uk/id/eprint/504100/ https://doi.org/10.1016/S1364-6826(98)00010-8 unknown Elsevier Jones, G.O.L.; Davis, C.J. 1998 Occurrence and characteristics of high-latitude mesospheric echoes at MF: observations by Halley and Tromso dynasondes. Journal of Atmospheric and Solar-Terrestrial Physics, 60 (6). 595-605. https://doi.org/10.1016/S1364-6826(98)00010-8 <https://doi.org/10.1016/S1364-6826(98)00010-8> Publication - Article PeerReviewed 1998 ftnerc https://doi.org/10.1016/S1364-6826(98)00010-8 2023-02-04T19:38:15Z The dynasonde at Halley, Antarctica, is operated throughout the year making ionogram soundings every five minutes. The extensive database of observations from 1993 and 1994 has been processed to investigate ionogram echoes from mesospheric heights. The occurrence of these echoes shows a very clear seasonal trend with far more echoes observed during the winter. The echoes are shown to be predominantly dependent on the absence of direct solar illumination. The characteristics of the echoes are compared with similar observations from a northern hemisphere site at Tromso, Norway. The observations from Halley and Tromso are discussed in relation to Polar Mesosphere Summer Echoes (PMSE) which are seen at higher radio frequencies above Tromso. It is found that ionogram mesospheric echoes have different occurrence statistics from PMSE and there is no statistical evidence to suggest that the echoes observed during the summer are different from those observed at other times of year. Article in Journal/Newspaper Antarc* Antarctica Tromso Tromso Natural Environment Research Council: NERC Open Research Archive Norway Tromso ENVELOPE(16.546,16.546,68.801,68.801) Journal of Atmospheric and Solar-Terrestrial Physics 60 6 595 605 |
institution |
Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
The dynasonde at Halley, Antarctica, is operated throughout the year making ionogram soundings every five minutes. The extensive database of observations from 1993 and 1994 has been processed to investigate ionogram echoes from mesospheric heights. The occurrence of these echoes shows a very clear seasonal trend with far more echoes observed during the winter. The echoes are shown to be predominantly dependent on the absence of direct solar illumination. The characteristics of the echoes are compared with similar observations from a northern hemisphere site at Tromso, Norway. The observations from Halley and Tromso are discussed in relation to Polar Mesosphere Summer Echoes (PMSE) which are seen at higher radio frequencies above Tromso. It is found that ionogram mesospheric echoes have different occurrence statistics from PMSE and there is no statistical evidence to suggest that the echoes observed during the summer are different from those observed at other times of year. |
format |
Article in Journal/Newspaper |
author |
Jones, G.O.L. Davis, C.J. |
spellingShingle |
Jones, G.O.L. Davis, C.J. Occurrence and characteristics of high-latitude mesospheric echoes at MF: observations by Halley and Tromso dynasondes |
author_facet |
Jones, G.O.L. Davis, C.J. |
author_sort |
Jones, G.O.L. |
title |
Occurrence and characteristics of high-latitude mesospheric echoes at MF: observations by Halley and Tromso dynasondes |
title_short |
Occurrence and characteristics of high-latitude mesospheric echoes at MF: observations by Halley and Tromso dynasondes |
title_full |
Occurrence and characteristics of high-latitude mesospheric echoes at MF: observations by Halley and Tromso dynasondes |
title_fullStr |
Occurrence and characteristics of high-latitude mesospheric echoes at MF: observations by Halley and Tromso dynasondes |
title_full_unstemmed |
Occurrence and characteristics of high-latitude mesospheric echoes at MF: observations by Halley and Tromso dynasondes |
title_sort |
occurrence and characteristics of high-latitude mesospheric echoes at mf: observations by halley and tromso dynasondes |
publisher |
Elsevier |
publishDate |
1998 |
url |
http://nora.nerc.ac.uk/id/eprint/504100/ https://doi.org/10.1016/S1364-6826(98)00010-8 |
long_lat |
ENVELOPE(16.546,16.546,68.801,68.801) |
geographic |
Norway Tromso |
geographic_facet |
Norway Tromso |
genre |
Antarc* Antarctica Tromso Tromso |
genre_facet |
Antarc* Antarctica Tromso Tromso |
op_relation |
Jones, G.O.L.; Davis, C.J. 1998 Occurrence and characteristics of high-latitude mesospheric echoes at MF: observations by Halley and Tromso dynasondes. Journal of Atmospheric and Solar-Terrestrial Physics, 60 (6). 595-605. https://doi.org/10.1016/S1364-6826(98)00010-8 <https://doi.org/10.1016/S1364-6826(98)00010-8> |
op_doi |
https://doi.org/10.1016/S1364-6826(98)00010-8 |
container_title |
Journal of Atmospheric and Solar-Terrestrial Physics |
container_volume |
60 |
container_issue |
6 |
container_start_page |
595 |
op_container_end_page |
605 |
_version_ |
1766248721095327744 |