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...
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Language: | English |
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Copernicus Publications under license by EGU – European Geosciences Union GmbH
2021
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Online Access: | http://hdl.handle.net/10852/86385 http://urn.nb.no/URN:NBN:no-89028 https://doi.org/10.5194/angeo-39-515-2021 |
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ftoslouniv:oai:www.duo.uio.no:10852/86385 2023-05-15T17:43:28+02:00 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 2021-06-12T13:10:47Z http://hdl.handle.net/10852/86385 http://urn.nb.no/URN:NBN:no-89028 https://doi.org/10.5194/angeo-39-515-2021 EN eng Copernicus Publications under license by EGU – European Geosciences Union GmbH http://urn.nb.no/URN:NBN:no-89028 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. Annales Geophysicae. 2021, 39(3), 515-531 http://hdl.handle.net/10852/86385 1915402 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Annales Geophysicae&rft.volume=39&rft.spage=515&rft.date=2021 Annales Geophysicae 39 3 515 531 https://doi.org/10.5194/angeo-39-515-2021 URN:NBN:no-89028 Fulltext https://www.duo.uio.no/bitstream/handle/10852/86385/1/2021_Vorobeva_Microbarom_vespagrams_ANGEO.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 0992-7689 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2021 ftoslouniv https://doi.org/10.5194/angeo-39-515-2021 2021-06-16T22:30:57Z 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 Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Norway Annales Geophysicae 39 3 515 531 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
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 |
spellingShingle |
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 |
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 under license by EGU – European Geosciences Union GmbH |
publishDate |
2021 |
url |
http://hdl.handle.net/10852/86385 http://urn.nb.no/URN:NBN:no-89028 https://doi.org/10.5194/angeo-39-515-2021 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
0992-7689 |
op_relation |
http://urn.nb.no/URN:NBN:no-89028 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. Annales Geophysicae. 2021, 39(3), 515-531 http://hdl.handle.net/10852/86385 1915402 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Annales Geophysicae&rft.volume=39&rft.spage=515&rft.date=2021 Annales Geophysicae 39 3 515 531 https://doi.org/10.5194/angeo-39-515-2021 URN:NBN:no-89028 Fulltext https://www.duo.uio.no/bitstream/handle/10852/86385/1/2021_Vorobeva_Microbarom_vespagrams_ANGEO.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
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_ |
1766145558937862144 |