Geometric considerations of polar mesospheric summer echoes in tilted beams using coherent radar imaging
We present observations of polar mesospheric summer echoes (PMSE) using the Middle Atmosphere Alomar Radar System in Northern Norway (69.30° N, 16.04° E). The radar is able to resolve PMSE at high spatial and temporal resolution and to perform pulse-to-pulse beam steering. In this experiment, 81 obl...
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München : European Geopyhsical Union
2014
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ftleibnizopen:oai:oai.leibnizopen.de:JyaPVYsBBwLIz6xGQ_1Y 2023-11-12T04:23:18+01:00 Geometric considerations of polar mesospheric summer echoes in tilted beams using coherent radar imaging Sommer, S. Stober, G. Chau, J.L. Latteck, R. 2014 application/pdf https://doi.org/10.34657/1520 https://oa.tib.eu/renate/handle/123456789/4024 eng eng München : European Geopyhsical Union CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ Advances in Radio Science, Volume 12, Page 197-203 Backscattering Holography Radar systems Beam direction Beam pointing Coherent radar Filling factor Mesospheric summer echoes Middle atmosphere Spatial and temporal resolutions Tilted beams Radar imaging 530 article Text 2014 ftleibnizopen https://doi.org/10.34657/1520 2023-10-22T23:35:21Z We present observations of polar mesospheric summer echoes (PMSE) using the Middle Atmosphere Alomar Radar System in Northern Norway (69.30° N, 16.04° E). The radar is able to resolve PMSE at high spatial and temporal resolution and to perform pulse-to-pulse beam steering. In this experiment, 81 oblique beam directions were used with off-zenith angles up to 25°. For each beam pointing direction and range gate, coherent radar imaging was applied to determine the mean backscatter location. The location of the mean scatterer in the beam volume was calculated by the deviation from the nominal off-zenith angle of the brightest pixel. It shows that in tilted beams with an off-zenith angle greater than 5°, structures appear at the altitudinal edges of the PMSE layer. Our results indicate that the mean influence of the location of the maximum depends on the tilt of the beam and on the observed area of the PMSE layer. At the upper/lower edge of the PMSE layer, the mean backscatter has a greater/smaller off-zenith angle than the nominal off-zenith angle. This effect intensifies with greater off-zenith beam pointing direction, so the beam filling factor plays an important role in the observation of PMSE layers for oblique beams. publishedVersion Article in Journal/Newspaper Northern Norway Unknown Alomar ENVELOPE(-67.083,-67.083,-68.133,-68.133) Norway |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
Backscattering Holography Radar systems Beam direction Beam pointing Coherent radar Filling factor Mesospheric summer echoes Middle atmosphere Spatial and temporal resolutions Tilted beams Radar imaging 530 |
spellingShingle |
Backscattering Holography Radar systems Beam direction Beam pointing Coherent radar Filling factor Mesospheric summer echoes Middle atmosphere Spatial and temporal resolutions Tilted beams Radar imaging 530 Sommer, S. Stober, G. Chau, J.L. Latteck, R. Geometric considerations of polar mesospheric summer echoes in tilted beams using coherent radar imaging |
topic_facet |
Backscattering Holography Radar systems Beam direction Beam pointing Coherent radar Filling factor Mesospheric summer echoes Middle atmosphere Spatial and temporal resolutions Tilted beams Radar imaging 530 |
description |
We present observations of polar mesospheric summer echoes (PMSE) using the Middle Atmosphere Alomar Radar System in Northern Norway (69.30° N, 16.04° E). The radar is able to resolve PMSE at high spatial and temporal resolution and to perform pulse-to-pulse beam steering. In this experiment, 81 oblique beam directions were used with off-zenith angles up to 25°. For each beam pointing direction and range gate, coherent radar imaging was applied to determine the mean backscatter location. The location of the mean scatterer in the beam volume was calculated by the deviation from the nominal off-zenith angle of the brightest pixel. It shows that in tilted beams with an off-zenith angle greater than 5°, structures appear at the altitudinal edges of the PMSE layer. Our results indicate that the mean influence of the location of the maximum depends on the tilt of the beam and on the observed area of the PMSE layer. At the upper/lower edge of the PMSE layer, the mean backscatter has a greater/smaller off-zenith angle than the nominal off-zenith angle. This effect intensifies with greater off-zenith beam pointing direction, so the beam filling factor plays an important role in the observation of PMSE layers for oblique beams. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Sommer, S. Stober, G. Chau, J.L. Latteck, R. |
author_facet |
Sommer, S. Stober, G. Chau, J.L. Latteck, R. |
author_sort |
Sommer, S. |
title |
Geometric considerations of polar mesospheric summer echoes in tilted beams using coherent radar imaging |
title_short |
Geometric considerations of polar mesospheric summer echoes in tilted beams using coherent radar imaging |
title_full |
Geometric considerations of polar mesospheric summer echoes in tilted beams using coherent radar imaging |
title_fullStr |
Geometric considerations of polar mesospheric summer echoes in tilted beams using coherent radar imaging |
title_full_unstemmed |
Geometric considerations of polar mesospheric summer echoes in tilted beams using coherent radar imaging |
title_sort |
geometric considerations of polar mesospheric summer echoes in tilted beams using coherent radar imaging |
publisher |
München : European Geopyhsical Union |
publishDate |
2014 |
url |
https://doi.org/10.34657/1520 https://oa.tib.eu/renate/handle/123456789/4024 |
long_lat |
ENVELOPE(-67.083,-67.083,-68.133,-68.133) |
geographic |
Alomar Norway |
geographic_facet |
Alomar Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
Advances in Radio Science, Volume 12, Page 197-203 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.34657/1520 |
_version_ |
1782338118427344896 |