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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Online Access: | https://doi.org/10.5194/angeo-39-515-2021 https://archimer.ifremer.fr/doc/00702/81364/85725.pdf https://archimer.ifremer.fr/doc/00702/81364/85726.pdf https://archimer.ifremer.fr/doc/00702/81364/ |
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fttriple:oai:gotriple.eu:10670/1.oo3thq 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 https://doi.org/10.5194/angeo-39-515-2021 https://archimer.ifremer.fr/doc/00702/81364/85725.pdf https://archimer.ifremer.fr/doc/00702/81364/85726.pdf https://archimer.ifremer.fr/doc/00702/81364/ en eng Copernicus GmbH doi:10.5194/angeo-39-515-2021 10670/1.oo3thq https://archimer.ifremer.fr/doc/00702/81364/85725.pdf https://archimer.ifremer.fr/doc/00702/81364/85726.pdf https://archimer.ifremer.fr/doc/00702/81364/ other Archimer, archive institutionnelle de l'Ifremer Annales Geophysicae (0992-7689) (Copernicus GmbH), 2021-06 , Vol. 39 , N. 3 , P. 515-531 info geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.5194/angeo-39-515-2021 2023-01-22T16:48:33Z 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. Text Northern Norway Unknown Norway Annales Geophysicae 39 3 515 531 |
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language |
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info geo |
spellingShingle |
info geo 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 |
info geo |
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 |
Text |
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 GmbH |
url |
https://doi.org/10.5194/angeo-39-515-2021 https://archimer.ifremer.fr/doc/00702/81364/85725.pdf https://archimer.ifremer.fr/doc/00702/81364/85726.pdf https://archimer.ifremer.fr/doc/00702/81364/ |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
Archimer, archive institutionnelle de l'Ifremer Annales Geophysicae (0992-7689) (Copernicus GmbH), 2021-06 , Vol. 39 , N. 3 , P. 515-531 |
op_relation |
doi:10.5194/angeo-39-515-2021 10670/1.oo3thq https://archimer.ifremer.fr/doc/00702/81364/85725.pdf https://archimer.ifremer.fr/doc/00702/81364/85726.pdf https://archimer.ifremer.fr/doc/00702/81364/ |
op_rights |
other |
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 |
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1766145557767651328 |