RT Journal Article
T1 Jupiter’s Great Red Spot: 												Strong Interactions With Incoming Anticyclones in 2019
A1 Sánchez-Lavega, A.
A1 Anguiano-Arteaga, A.
A1 Iñurrigarro, P.
A1 Garcia-Melendo, E.
A1 Legarreta, J.
A1 Hueso, R.
A1 Sanz-Requena, J. F.
A1 Pérez-Hoyos, S.
A1 Mendikoa, I.
A1 Soria, M.
A1 Rojas, J. F.
A1 Andrés-Carcasona, M.
A1 Prat-Gasull, A.
A1 Ordoñez-Extebarria, I.
A1 Rogers, J. H.
A1 Foster, C.
A1 Mizumoto, S.
A1 Casely, A.
A1 Hansen, C. J.
A1 Orton, G. S.
A1 Momary, T.
A1 Eichstädt, G.
AB Jupiter’s Great Red Spot (GRS), a giant anticyclone, is the largest and longest-lived of all the vortices observed in planetary atmospheres. During its history, the GRS has shrunk to half its size since 1879, and encountered many smaller anticyclones and other dynamical features that interacted in a complex way. In 2018–2020, while having a historically small size, its structure and even its survival appeared to be threatened when a series of anticyclones moving in from the east tore off large fragments of the red area and distorted its shape. In this work, we report observations of the dynamics of these interactions and show that as a result the GRS increased its internal rotation velocity, maintaining its vorticity but decreasing its visible area, and suffering a transient change in its otherwise steady 90-day oscillation in longitude. From a radiative transfer analysis and numerical simulations of the dynamics we show that the interactions affected the upper cloud tops of the GRS. We argue that the intense vorticity of the GRS, together with its larger size and depth compared to the interacting vortices, guarantees its long lifetime.
SN 2169-9097
YR 2021
FD 2021-04
LK https://hdl.handle.net/11556/4005
UL https://hdl.handle.net/11556/4005
LA eng
NO Sánchez-Lavega , A , Anguiano-Arteaga , A , Iñurrigarro , P , Garcia-Melendo , E , Legarreta , J , Hueso , R , Sanz-Requena , J F , Pérez-Hoyos , S , Mendikoa , I , Soria , M , Rojas , J F , Andrés-Carcasona , M , Prat-Gasull , A , Ordoñez-Extebarria , I , Rogers , J H , Foster , C , Mizumoto , S , Casely , A , Hansen , C J , Orton , G S , Momary , T & Eichstädt , G 2021 , ' Jupiter’s Great Red Spot : Strong Interactions With Incoming Anticyclones in 2019 ' , Journal of Geophysical Research: Planets , vol. 126 , no. 4 , e2020JE006686 . https://doi.org/10.1029/2020JE006686
NO Publisher Copyright: © 2021. American Geophysical Union. All Rights Reserved.
NO This work has been supported by the Spanish project AYA2015-65041-P and PID2019-109467GB-I00 (MINECO/FEDER, UE) and Grupos Gobierno Vasco IT1366-19. PI acknowledges a PhD scholarship from Gobierno Vasco. EGM is Serra Hunter Fellow at UPC. This work used data acquired from the NASA/ESA HST Space Telescope, associated with OPAL program (PI: Simon, GO13937), and archived by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5–26,555. All maps are available at http://dx.doi.org/10.17909/T9G593. PlanetCam observations were collected at the Centro Astronómico Hispánico en Andalucía (CAHA), operated jointly by the Instituto de Astrofisica de Andalucia (CSIC) and the Andalusian Universities (Junta de Andalucía). EGM, MS, APG, MAC and ASL thankfully acknowledge the computer resources at Mare Nostrum and the technical support provided by Barcelona Supercomputing Center (AECT-2019-2-0006). This research has made use of the USGS Integrated Software for Imagers and Spectrometers (ISIS). We appreciate the contribution from all observers cited in Table S1 for his fundamental contribution to this study with Jupiter images obtained with high dedication and skill. GSO and TM were supported by NASA with funds distributed to the Jet Propulsion Laboratory, California Institute of Technology. This work has been supported by the Spanish project AYA2015‐65041‐P and PID2019‐109467GB‐I00 (MINECO/FEDER, UE) and Grupos Gobierno Vasco IT1366‐19. PI acknowledges a PhD scholarship from Gobierno Vasco. EGM is Serra Hunter Fellow at UPC. This work used data acquired from the NASA/ESA HST Space Telescope, associated with OPAL program (PI: Simon, GO13937), and archived by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5–26,555. All maps are available at http://dx.doi.org/10.17909/T9G593 . PlanetCam observations were collected at the Centro Astronómico Hispánico en Andalucía (CAHA), operated jointly by the Instituto de Astrofisica de Andalucia (CSIC) and the Andalusian Universities (Junta de Andalucía). EGM, MS, APG, MAC and ASL thankfully acknowledge the computer resources at Mare Nostrum and the technical support provided by Barcelona Supercomputing Center (AECT‐2019‐2‐0006). This research has made use of the USGS Integrated Software for Imagers and Spectrometers (ISIS). We appreciate the contribution from all observers cited in Table S1 for his fundamental contribution to this study with Jupiter images obtained with high dedication and skill. GSO and TM were supported by NASA with funds distributed to the Jet Propulsion Laboratory, California Institute of Technology.
DS TECNALIA Publications
RD 31 jul 2024