First Thermal IR Images of Neptune: Evidence forSouthern Polar Heating and Methane Escape
International audience Images of Neptune have been obtained in the thermal range, in filters between 8 and 19 μm, using the VISIR mid-infrared imaging spectrometer at the VLT-UT3 (Melipal). They allow, for the first time, mapping of atmospheric temperatures at different altitude levels, rang-ing fro...
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ftsorbonneuniv:oai:HAL:obspm-03855241v1 2024-09-15T18:36:44+00:00 First Thermal IR Images of Neptune: Evidence forSouthern Polar Heating and Methane Escape Encrenaz, Thérèse Orton, Glenn S. Leyrat, Cédric Puetter, Richard C. Friedson, Andrew J. Pantin, Eric Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2007 https://hal-obspm.ccsd.cnrs.fr/obspm-03855241 en eng HAL CCSD European Southern Observatory obspm-03855241 https://hal-obspm.ccsd.cnrs.fr/obspm-03855241 BIBCODE: 2007Msngr.130.23E ISSN: 0722-6691 The Messenger https://hal-obspm.ccsd.cnrs.fr/obspm-03855241 The Messenger, 2007, 130, pp.23-31 [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2007 ftsorbonneuniv 2024-07-25T23:47:46Z International audience Images of Neptune have been obtained in the thermal range, in filters between 8 and 19 μm, using the VISIR mid-infrared imaging spectrometer at the VLT-UT3 (Melipal). They allow, for the first time, mapping of atmospheric temperatures at different altitude levels, rang-ing from the tropopause to the stratosphere. It was found that the south pole of Neptune, at the level of the tropopause, appears to be warmer than the rest of the planet by 6 to 8 K. This south-ern polar warming can be explained by its constant solar illumination over the past 40 years, as the southern summer solstice occurred in July 2005. The other unexpected discovery is the evidence for a stratospheric hot spot located at 65-70°S which rotates with the planet at the atmospheric rotation rate of about 12 hours. Article in Journal/Newspaper South pole HAL Sorbonne Université |
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Open Polar |
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HAL Sorbonne Université |
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ftsorbonneuniv |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Encrenaz, Thérèse Orton, Glenn S. Leyrat, Cédric Puetter, Richard C. Friedson, Andrew J. Pantin, Eric First Thermal IR Images of Neptune: Evidence forSouthern Polar Heating and Methane Escape |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Images of Neptune have been obtained in the thermal range, in filters between 8 and 19 μm, using the VISIR mid-infrared imaging spectrometer at the VLT-UT3 (Melipal). They allow, for the first time, mapping of atmospheric temperatures at different altitude levels, rang-ing from the tropopause to the stratosphere. It was found that the south pole of Neptune, at the level of the tropopause, appears to be warmer than the rest of the planet by 6 to 8 K. This south-ern polar warming can be explained by its constant solar illumination over the past 40 years, as the southern summer solstice occurred in July 2005. The other unexpected discovery is the evidence for a stratospheric hot spot located at 65-70°S which rotates with the planet at the atmospheric rotation rate of about 12 hours. |
author2 |
Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Encrenaz, Thérèse Orton, Glenn S. Leyrat, Cédric Puetter, Richard C. Friedson, Andrew J. Pantin, Eric |
author_facet |
Encrenaz, Thérèse Orton, Glenn S. Leyrat, Cédric Puetter, Richard C. Friedson, Andrew J. Pantin, Eric |
author_sort |
Encrenaz, Thérèse |
title |
First Thermal IR Images of Neptune: Evidence forSouthern Polar Heating and Methane Escape |
title_short |
First Thermal IR Images of Neptune: Evidence forSouthern Polar Heating and Methane Escape |
title_full |
First Thermal IR Images of Neptune: Evidence forSouthern Polar Heating and Methane Escape |
title_fullStr |
First Thermal IR Images of Neptune: Evidence forSouthern Polar Heating and Methane Escape |
title_full_unstemmed |
First Thermal IR Images of Neptune: Evidence forSouthern Polar Heating and Methane Escape |
title_sort |
first thermal ir images of neptune: evidence forsouthern polar heating and methane escape |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal-obspm.ccsd.cnrs.fr/obspm-03855241 |
genre |
South pole |
genre_facet |
South pole |
op_source |
ISSN: 0722-6691 The Messenger https://hal-obspm.ccsd.cnrs.fr/obspm-03855241 The Messenger, 2007, 130, pp.23-31 |
op_relation |
obspm-03855241 https://hal-obspm.ccsd.cnrs.fr/obspm-03855241 BIBCODE: 2007Msngr.130.23E |
_version_ |
1810480455892336640 |