A comparison of 11-year mesospheric and lower thermospheric winds determined by meteor and MF radar at 69 ° N
The Andenes Meteor Radar (MR) and the Saura Medium Frequency (MF) Radar are located in northern Norway (69° N, 16° E) and operate continuously to provide wind measurements of the mesosphere and lower thermosphere (MLT) region. We compare the two systems to find potential biases between the radars an...
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ftleibnizopen:oai:oai.leibnizopen.de:7vVC-IYBdbrxVwz6xcRg 2023-05-15T13:25:24+02:00 A comparison of 11-year mesospheric and lower thermospheric winds determined by meteor and MF radar at 69 ° N Wilhelm, Sven Stober, Gunter Chau, Jorge L. 2017 application/pdf https://doi.org/10.34657/721 https://oa.tib.eu/renate/handle/123456789/319 eng eng München : European Geopyhsical Union CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ Annales Geophysicae, Volume 35, Issue 4, Page 893-906 Radio science (instruments and techniques) 550 article Text 2017 ftleibnizopen https://doi.org/10.34657/721 2023-03-20T00:13:06Z The Andenes Meteor Radar (MR) and the Saura Medium Frequency (MF) Radar are located in northern Norway (69° N, 16° E) and operate continuously to provide wind measurements of the mesosphere and lower thermosphere (MLT) region. We compare the two systems to find potential biases between the radars and combine the data from both systems to enhance altitudinal coverage between 60 and 110 km. The systems have altitudinal overlap between 78 and 100 km at which we compare winds and tides on the basis of hourly winds with 2 km altitude bins. Our results indicate reasonable agreement for the zonal and meridional wind components between 78 and 92 km. An exception to this is the altitude range below 84 km during the summer, at which the correlation decreases. We also compare semidiurnal and diurnal tides according to their amplitudes and phases with good agreement below 90 km for the diurnal and below 96 km for the semidiurnal tides. Based on these findings we have taken the MR data as a reference. By comparing the MF and MR winds within the overlapping region, we have empirically estimated correction factors to be applied to the MF winds. Existing gaps in that data set will be filled with weighted MF data. This weighting is done due to underestimated wind values of the MF compared to the MR, and the resulting correction factors fit to a polynomial function of second degree within the overlapping area. We are therefore able to construct a consistent and homogenous wind from approximately 60 to 110 km. publishedVersion Article in Journal/Newspaper Andenes Northern Norway LeibnizOpen (The Leibniz Association) Norway Saura ENVELOPE(12.989,12.989,66.233,66.233) |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
Radio science (instruments and techniques) 550 |
spellingShingle |
Radio science (instruments and techniques) 550 Wilhelm, Sven Stober, Gunter Chau, Jorge L. A comparison of 11-year mesospheric and lower thermospheric winds determined by meteor and MF radar at 69 ° N |
topic_facet |
Radio science (instruments and techniques) 550 |
description |
The Andenes Meteor Radar (MR) and the Saura Medium Frequency (MF) Radar are located in northern Norway (69° N, 16° E) and operate continuously to provide wind measurements of the mesosphere and lower thermosphere (MLT) region. We compare the two systems to find potential biases between the radars and combine the data from both systems to enhance altitudinal coverage between 60 and 110 km. The systems have altitudinal overlap between 78 and 100 km at which we compare winds and tides on the basis of hourly winds with 2 km altitude bins. Our results indicate reasonable agreement for the zonal and meridional wind components between 78 and 92 km. An exception to this is the altitude range below 84 km during the summer, at which the correlation decreases. We also compare semidiurnal and diurnal tides according to their amplitudes and phases with good agreement below 90 km for the diurnal and below 96 km for the semidiurnal tides. Based on these findings we have taken the MR data as a reference. By comparing the MF and MR winds within the overlapping region, we have empirically estimated correction factors to be applied to the MF winds. Existing gaps in that data set will be filled with weighted MF data. This weighting is done due to underestimated wind values of the MF compared to the MR, and the resulting correction factors fit to a polynomial function of second degree within the overlapping area. We are therefore able to construct a consistent and homogenous wind from approximately 60 to 110 km. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Wilhelm, Sven Stober, Gunter Chau, Jorge L. |
author_facet |
Wilhelm, Sven Stober, Gunter Chau, Jorge L. |
author_sort |
Wilhelm, Sven |
title |
A comparison of 11-year mesospheric and lower thermospheric winds determined by meteor and MF radar at 69 ° N |
title_short |
A comparison of 11-year mesospheric and lower thermospheric winds determined by meteor and MF radar at 69 ° N |
title_full |
A comparison of 11-year mesospheric and lower thermospheric winds determined by meteor and MF radar at 69 ° N |
title_fullStr |
A comparison of 11-year mesospheric and lower thermospheric winds determined by meteor and MF radar at 69 ° N |
title_full_unstemmed |
A comparison of 11-year mesospheric and lower thermospheric winds determined by meteor and MF radar at 69 ° N |
title_sort |
comparison of 11-year mesospheric and lower thermospheric winds determined by meteor and mf radar at 69 ° n |
publisher |
München : European Geopyhsical Union |
publishDate |
2017 |
url |
https://doi.org/10.34657/721 https://oa.tib.eu/renate/handle/123456789/319 |
long_lat |
ENVELOPE(12.989,12.989,66.233,66.233) |
geographic |
Norway Saura |
geographic_facet |
Norway Saura |
genre |
Andenes Northern Norway |
genre_facet |
Andenes Northern Norway |
op_source |
Annales Geophysicae, Volume 35, Issue 4, Page 893-906 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.34657/721 |
_version_ |
1766385062052364288 |