Climatological comparison of polar mesosphere summer echoes over the Arctic and Antarctica at 69°
Polar mesosphere summer echoes (PMSE) have been observed for more than 30 years with 50 MHz VHF radars at various locations in the Northern Hemisphere. Continuous observation of PMSE is conducted on the northern Norwegian island of Andøya (69.3° N) using the ALWIN radar (1999–2008) and MAARSY (since...
Published in: | Annales Geophysicae |
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Copernicus Publications
2024
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00072023 2024-04-14T08:00:56+00:00 Climatological comparison of polar mesosphere summer echoes over the Arctic and Antarctica at 69° Latteck, Ralph Murphy, Damian J. 2024-02 electronic https://doi.org/10.5194/angeo-42-55-2024 https://noa.gwlb.de/receive/cop_mods_00072023 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070257/angeo-42-55-2024.pdf https://angeo.copernicus.org/articles/42/55/2024/angeo-42-55-2024.pdf eng eng Copernicus Publications Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-42-55-2024 https://noa.gwlb.de/receive/cop_mods_00072023 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070257/angeo-42-55-2024.pdf https://angeo.copernicus.org/articles/42/55/2024/angeo-42-55-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/angeo-42-55-2024 2024-03-19T12:18:16Z Polar mesosphere summer echoes (PMSE) have been observed for more than 30 years with 50 MHz VHF radars at various locations in the Northern Hemisphere. Continuous observation of PMSE is conducted on the northern Norwegian island of Andøya (69.3° N) using the ALWIN radar (1999–2008) and MAARSY (since 2010). The same kind of PMSE measurements began in 2004 in the Southern Hemisphere with the Australian Antarctic Division's VHF radar at Davis Station in Antarctica (68.6° S), which is at an opposite latitude to Andøya. Since the radars at both sites are calibrated, the received echo strength of PMSE from more than 1 decade of mesospheric observations on both hemispheres could be converted to absolute signal power, allowing for direct comparison of the measurements. Comparison of PMSE observations obtained at both radar sites during a period of 23 boreal summers (Andøya) and 15 austral summers (Davis) shows that their PMSE signal strengths are of the same order of magnitude, but significantly fewer PMSE are observed in the Southern Hemisphere than in the Northern Hemisphere. Compared to Andøya, the PMSE season over Davis starts about 7 d later on average and ends 9 d earlier, making it 16 d shorter. PMSE over Davis occur less frequently but with greater variability in seasonal, diurnal, and altitudinal occurrence. For example, PMSE over Davis reach maximum altitudes about 1.5 km higher than those over Andøya. Article in Journal/Newspaper Andøya Antarc* Antarctic Antarctica Arctic Niedersächsisches Online-Archiv NOA Andøya ENVELOPE(13.982,13.982,68.185,68.185) Antarctic Arctic Austral Davis Station ENVELOPE(77.968,77.968,-68.576,-68.576) Davis-Station ENVELOPE(77.968,77.968,-68.576,-68.576) Annales Geophysicae 42 1 55 68 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Latteck, Ralph Murphy, Damian J. Climatological comparison of polar mesosphere summer echoes over the Arctic and Antarctica at 69° |
topic_facet |
article Verlagsveröffentlichung |
description |
Polar mesosphere summer echoes (PMSE) have been observed for more than 30 years with 50 MHz VHF radars at various locations in the Northern Hemisphere. Continuous observation of PMSE is conducted on the northern Norwegian island of Andøya (69.3° N) using the ALWIN radar (1999–2008) and MAARSY (since 2010). The same kind of PMSE measurements began in 2004 in the Southern Hemisphere with the Australian Antarctic Division's VHF radar at Davis Station in Antarctica (68.6° S), which is at an opposite latitude to Andøya. Since the radars at both sites are calibrated, the received echo strength of PMSE from more than 1 decade of mesospheric observations on both hemispheres could be converted to absolute signal power, allowing for direct comparison of the measurements. Comparison of PMSE observations obtained at both radar sites during a period of 23 boreal summers (Andøya) and 15 austral summers (Davis) shows that their PMSE signal strengths are of the same order of magnitude, but significantly fewer PMSE are observed in the Southern Hemisphere than in the Northern Hemisphere. Compared to Andøya, the PMSE season over Davis starts about 7 d later on average and ends 9 d earlier, making it 16 d shorter. PMSE over Davis occur less frequently but with greater variability in seasonal, diurnal, and altitudinal occurrence. For example, PMSE over Davis reach maximum altitudes about 1.5 km higher than those over Andøya. |
format |
Article in Journal/Newspaper |
author |
Latteck, Ralph Murphy, Damian J. |
author_facet |
Latteck, Ralph Murphy, Damian J. |
author_sort |
Latteck, Ralph |
title |
Climatological comparison of polar mesosphere summer echoes over the Arctic and Antarctica at 69° |
title_short |
Climatological comparison of polar mesosphere summer echoes over the Arctic and Antarctica at 69° |
title_full |
Climatological comparison of polar mesosphere summer echoes over the Arctic and Antarctica at 69° |
title_fullStr |
Climatological comparison of polar mesosphere summer echoes over the Arctic and Antarctica at 69° |
title_full_unstemmed |
Climatological comparison of polar mesosphere summer echoes over the Arctic and Antarctica at 69° |
title_sort |
climatological comparison of polar mesosphere summer echoes over the arctic and antarctica at 69° |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/angeo-42-55-2024 https://noa.gwlb.de/receive/cop_mods_00072023 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070257/angeo-42-55-2024.pdf https://angeo.copernicus.org/articles/42/55/2024/angeo-42-55-2024.pdf |
long_lat |
ENVELOPE(13.982,13.982,68.185,68.185) ENVELOPE(77.968,77.968,-68.576,-68.576) ENVELOPE(77.968,77.968,-68.576,-68.576) |
geographic |
Andøya Antarctic Arctic Austral Davis Station Davis-Station |
geographic_facet |
Andøya Antarctic Arctic Austral Davis Station Davis-Station |
genre |
Andøya Antarc* Antarctic Antarctica Arctic |
genre_facet |
Andøya Antarc* Antarctic Antarctica Arctic |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-42-55-2024 https://noa.gwlb.de/receive/cop_mods_00072023 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070257/angeo-42-55-2024.pdf https://angeo.copernicus.org/articles/42/55/2024/angeo-42-55-2024.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-42-55-2024 |
container_title |
Annales Geophysicae |
container_volume |
42 |
container_issue |
1 |
container_start_page |
55 |
op_container_end_page |
68 |
_version_ |
1796305205820653568 |