Benchmarking microbarom radiation and propagation model against infrasound recordings: a vespagram-based approach
This study investigates the use of a vespagram-based approach as a tool for multi-directional comparison between simulated microbarom soundscapes and infrasound data recorded at ground-based array stations. Data recorded at the IS37 station in northern Norway during 2014–2019 have been processed to...
Published in: | Annales Geophysicae |
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2021
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00056948 2024-09-15T18:25:51+00:00 Benchmarking microbarom radiation and propagation model against infrasound recordings: a vespagram-based approach Vorobeva, Ekaterina De Carlo, Marine Le Pichon, Alexis Espy, Patrick Joseph Näsholm, Sven Peter 2021-06 electronic https://doi.org/10.5194/angeo-39-515-2021 https://noa.gwlb.de/receive/cop_mods_00056948 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00056598/angeo-39-515-2021.pdf https://angeo.copernicus.org/articles/39/515/2021/angeo-39-515-2021.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-39-515-2021 https://noa.gwlb.de/receive/cop_mods_00056948 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00056598/angeo-39-515-2021.pdf https://angeo.copernicus.org/articles/39/515/2021/angeo-39-515-2021.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2021 ftnonlinearchiv https://doi.org/10.5194/angeo-39-515-2021 2024-06-26T04:40:00Z This study investigates the use of a vespagram-based approach as a tool for multi-directional comparison between simulated microbarom soundscapes and infrasound data recorded at ground-based array stations. Data recorded at the IS37 station in northern Norway during 2014–2019 have been processed to generate vespagrams (velocity spectral analysis) for five frequency bands between 0.1 and 0.6 Hz. The back azimuth resolution between the vespagram and the microbarom model is harmonized by smoothing the modeled soundscapes along the back azimuth axis with a kernel corresponding to the frequency-dependent array resolution. An estimate of similarity between the output of the microbarom radiation and propagation model and infrasound observations is then generated based on the image-processing approach of the mean square difference. The analysis reveals that vespagrams can monitor seasonal variations in the microbarom azimuthal distribution, amplitude, and frequency, as well as changes during sudden stratospheric warming events. The vespagram-based approach is computationally inexpensive, can uncover microbarom source variability, and has the potential for near-real-time stratospheric diagnostics and atmospheric model assessment. Article in Journal/Newspaper Northern Norway Niedersächsisches Online-Archiv NOA Annales Geophysicae 39 3 515 531 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Vorobeva, Ekaterina De Carlo, Marine Le Pichon, Alexis Espy, Patrick Joseph Näsholm, Sven Peter Benchmarking microbarom radiation and propagation model against infrasound recordings: a vespagram-based approach |
topic_facet |
article Verlagsveröffentlichung |
description |
This study investigates the use of a vespagram-based approach as a tool for multi-directional comparison between simulated microbarom soundscapes and infrasound data recorded at ground-based array stations. Data recorded at the IS37 station in northern Norway during 2014–2019 have been processed to generate vespagrams (velocity spectral analysis) for five frequency bands between 0.1 and 0.6 Hz. The back azimuth resolution between the vespagram and the microbarom model is harmonized by smoothing the modeled soundscapes along the back azimuth axis with a kernel corresponding to the frequency-dependent array resolution. An estimate of similarity between the output of the microbarom radiation and propagation model and infrasound observations is then generated based on the image-processing approach of the mean square difference. The analysis reveals that vespagrams can monitor seasonal variations in the microbarom azimuthal distribution, amplitude, and frequency, as well as changes during sudden stratospheric warming events. The vespagram-based approach is computationally inexpensive, can uncover microbarom source variability, and has the potential for near-real-time stratospheric diagnostics and atmospheric model assessment. |
format |
Article in Journal/Newspaper |
author |
Vorobeva, Ekaterina De Carlo, Marine Le Pichon, Alexis Espy, Patrick Joseph Näsholm, Sven Peter |
author_facet |
Vorobeva, Ekaterina De Carlo, Marine Le Pichon, Alexis Espy, Patrick Joseph Näsholm, Sven Peter |
author_sort |
Vorobeva, Ekaterina |
title |
Benchmarking microbarom radiation and propagation model against infrasound recordings: a vespagram-based approach |
title_short |
Benchmarking microbarom radiation and propagation model against infrasound recordings: a vespagram-based approach |
title_full |
Benchmarking microbarom radiation and propagation model against infrasound recordings: a vespagram-based approach |
title_fullStr |
Benchmarking microbarom radiation and propagation model against infrasound recordings: a vespagram-based approach |
title_full_unstemmed |
Benchmarking microbarom radiation and propagation model against infrasound recordings: a vespagram-based approach |
title_sort |
benchmarking microbarom radiation and propagation model against infrasound recordings: a vespagram-based approach |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/angeo-39-515-2021 https://noa.gwlb.de/receive/cop_mods_00056948 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00056598/angeo-39-515-2021.pdf https://angeo.copernicus.org/articles/39/515/2021/angeo-39-515-2021.pdf |
genre |
Northern Norway |
genre_facet |
Northern Norway |
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-39-515-2021 https://noa.gwlb.de/receive/cop_mods_00056948 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00056598/angeo-39-515-2021.pdf https://angeo.copernicus.org/articles/39/515/2021/angeo-39-515-2021.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-39-515-2021 |
container_title |
Annales Geophysicae |
container_volume |
39 |
container_issue |
3 |
container_start_page |
515 |
op_container_end_page |
531 |
_version_ |
1810466321204248576 |