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Generation of gravity waves from thermal tides in the Venus atmosphere
Gravity waves play essential roles in the terrestrial atmosphere because they propagate far from source regions and transport momentum and energy globally. Gravity waves are also observed in the Venus atmosphere, but their characteristics have been poorly understood. Here we demonstrate activities o...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8211692/ https://www.ncbi.nlm.nih.gov/pubmed/34140504 http://dx.doi.org/10.1038/s41467-021-24002-1 |
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author | Sugimoto, Norihiko Fujisawa, Yukiko Kashimura, Hiroki Noguchi, Katsuyuki Kuroda, Takeshi Takagi, Masahiro Hayashi, Yoshi-Yuki |
author_facet | Sugimoto, Norihiko Fujisawa, Yukiko Kashimura, Hiroki Noguchi, Katsuyuki Kuroda, Takeshi Takagi, Masahiro Hayashi, Yoshi-Yuki |
author_sort | Sugimoto, Norihiko |
collection | PubMed |
description | Gravity waves play essential roles in the terrestrial atmosphere because they propagate far from source regions and transport momentum and energy globally. Gravity waves are also observed in the Venus atmosphere, but their characteristics have been poorly understood. Here we demonstrate activities of small-scale gravity waves using a high-resolution Venus general circulation model with less than 20 and 0.25 km in the horizontal and vertical grid intervals, respectively. We find spontaneous gravity wave radiation from nearly balanced flows. In the upper cloud layer (~70 km), the thermal tides in the super-rotation are primary sources of small-scale gravity waves in the low-latitudes. Baroclinic/barotropic waves are also essential sources in the mid- and high-latitudes. The small-scale gravity waves affect the three-dimensional structure of the super-rotation and contribute to material mixing through their breaking processes. They propagate vertically and transport momentum globally, which decelerates the super-rotation in the upper cloud layer (~70 km) and accelerates it above ~80 km. |
format | Online Article Text |
id | pubmed-8211692 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-82116922021-07-01 Generation of gravity waves from thermal tides in the Venus atmosphere Sugimoto, Norihiko Fujisawa, Yukiko Kashimura, Hiroki Noguchi, Katsuyuki Kuroda, Takeshi Takagi, Masahiro Hayashi, Yoshi-Yuki Nat Commun Article Gravity waves play essential roles in the terrestrial atmosphere because they propagate far from source regions and transport momentum and energy globally. Gravity waves are also observed in the Venus atmosphere, but their characteristics have been poorly understood. Here we demonstrate activities of small-scale gravity waves using a high-resolution Venus general circulation model with less than 20 and 0.25 km in the horizontal and vertical grid intervals, respectively. We find spontaneous gravity wave radiation from nearly balanced flows. In the upper cloud layer (~70 km), the thermal tides in the super-rotation are primary sources of small-scale gravity waves in the low-latitudes. Baroclinic/barotropic waves are also essential sources in the mid- and high-latitudes. The small-scale gravity waves affect the three-dimensional structure of the super-rotation and contribute to material mixing through their breaking processes. They propagate vertically and transport momentum globally, which decelerates the super-rotation in the upper cloud layer (~70 km) and accelerates it above ~80 km. Nature Publishing Group UK 2021-06-17 /pmc/articles/PMC8211692/ /pubmed/34140504 http://dx.doi.org/10.1038/s41467-021-24002-1 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Sugimoto, Norihiko Fujisawa, Yukiko Kashimura, Hiroki Noguchi, Katsuyuki Kuroda, Takeshi Takagi, Masahiro Hayashi, Yoshi-Yuki Generation of gravity waves from thermal tides in the Venus atmosphere |
title | Generation of gravity waves from thermal tides in the Venus atmosphere |
title_full | Generation of gravity waves from thermal tides in the Venus atmosphere |
title_fullStr | Generation of gravity waves from thermal tides in the Venus atmosphere |
title_full_unstemmed | Generation of gravity waves from thermal tides in the Venus atmosphere |
title_short | Generation of gravity waves from thermal tides in the Venus atmosphere |
title_sort | generation of gravity waves from thermal tides in the venus atmosphere |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8211692/ https://www.ncbi.nlm.nih.gov/pubmed/34140504 http://dx.doi.org/10.1038/s41467-021-24002-1 |
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