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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ftleibnizopen:oai:oai.leibnizopen.de:5ru3IJEBBwLIz6xGfya5 2024-09-15T18:25:52+00:00 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/ 530 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 Article Text 2014 ftleibnizopen https://doi.org/10.34657/1520 2024-08-05T12:41:55Z 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 LeibnizOpen (The Leibniz Association) |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
530 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 |
spellingShingle |
530 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 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 |
530 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 |
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 |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.34657/1520 |
_version_ |
1810466346667868160 |