Energy Exchanges in Saturn's Polar Regions From Cassini Observations: Eddy-Zonal Flow Interactions.
Saturn
atmospheric dynamics
energetics
polar vortices
zonal jets
Journal
Journal of geophysical research. Planets
ISSN: 2169-9097
Titre abrégé: J Geophys Res Planets
Pays: United States
ID NLM: 101661797
Informations de publication
Date de publication:
May 2022
May 2022
Historique:
received:
11
06
2021
revised:
06
04
2022
accepted:
10
04
2022
entrez:
21
7
2022
pubmed:
22
7
2022
medline:
22
7
2022
Statut:
ppublish
Résumé
Saturn's polar regions (polewards of ∼63° planetocentric latitude) are strongly dynamically active with zonal jets, polar cyclones and the intriguing north polar hexagon (NPH) wave. Here we analyze measurements of horizontal winds, previously obtained from Cassini images by Antuñano et al. (2015), https://doi.org/10.1002/2014je004709, to determine the spatial and spectral exchanges of kinetic energy (KE) between zonal mean zonal jets and nonaxisymmetric eddies in Saturn's polar regions. Eddies of most resolved scales generally feed KE into the eastward and westward zonal mean jets at rates between 4.3 × 10
Identifiants
pubmed: 35860763
doi: 10.1029/2021JE006973
pii: JGRE21869
pmc: PMC9285433
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e2021JE006973Informations de copyright
© 2022. The Authors.
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J Geophys Res Planets. 2022 May;127(5):e2021JE006973
pubmed: 35860763