The O2 nightglow in the martian atmosphere by SPICAM onboard of Mars-Express
International audience We present observations of the O2(a1Δg) nightglow at 1.27 μm on Mars using the SPICAM IR spectrometer onboard of the Mars Express orbiter. In contrast to the O2(a1Δg) dayglow that results from the ozone photodissociation, the O2(a1Δg) nightglow is a product of the recombinatio...
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Online Access: | https://hal.science/hal-00685095 https://doi.org/10.1016/j.icarus.2012.03.031 |
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ftunivnantes:oai:HAL:hal-00685095v1 2023-05-15T18:23:15+02:00 The O2 nightglow in the martian atmosphere by SPICAM onboard of Mars-Express Fedorova, Anna Lefèvre, Franck Guslyakova, S. Korablev, Oleg Bertaux, Jean-Loup Montmessin, Franck Reberac, Aurélie Gondet, Brigitte Space Research Institute of the Russian Academy of Sciences (IKI) Russian Academy of Sciences Moscow (RAS) Moscow Institute of Physics and Technology Moscow (MIPT) PLANETO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut d'astrophysique spatiale (IAS) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) 2012 https://hal.science/hal-00685095 https://doi.org/10.1016/j.icarus.2012.03.031 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2012.03.031 hal-00685095 https://hal.science/hal-00685095 doi:10.1016/j.icarus.2012.03.031 ISSN: 0019-1035 EISSN: 1090-2643 Icarus https://hal.science/hal-00685095 Icarus, 2012, 219 (2), pp.596-608. ⟨10.1016/j.icarus.2012.03.031⟩ Mars Atmosphere Nightglows [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] info:eu-repo/semantics/article Journal articles 2012 ftunivnantes https://doi.org/10.1016/j.icarus.2012.03.031 2023-03-08T00:11:52Z International audience We present observations of the O2(a1Δg) nightglow at 1.27 μm on Mars using the SPICAM IR spectrometer onboard of the Mars Express orbiter. In contrast to the O2(a1Δg) dayglow that results from the ozone photodissociation, the O2(a1Δg) nightglow is a product of the recombination of O atoms formed by CO2 photolysis on the dayside at altitudes higher than 80 km and transported downward above the winter pole by the Hadley circulation. The first detections of the O2(a1Δg) nightglow in 2010 indicate that it is about two order of magnitude less intense than the dayglow [ and ]. SPICAM IR sounds the Martian atmosphere in the near-IR range (1-1.7 μm) with the spectral resolution of 3.5 cm-1 in nadir, limb and solar occultation modes. In 2010 the vertical profiles of the O2(a1Δg) nightside emission have been obtained near the South Pole at latitudes of 82-83oS for two sequences of observations: Ls=111-120o and Ls=152-165o. The altitude of the emission maximum varied from 45 km on Ls=111-120o to 38-49 km on Ls=152-165o. Averaged vertically integrated intensity of the emission at these latitudes has shown an increase from 0.22 to 0.35 MR. Those values of total vertical emission rate are consistent with the OMEGA observations on Mars-Express in 2010. The estimated density of oxygen atoms at altitudes from 50 to 65 km varies from 1.5 1011 to 2.5 1011 cm-3. Comparison with the LMD general circulation model with photochemistry [Lefèvre et al., 2004; 2008] shows that the model reproduces fairly well the O2(a1Δg) emission layer observed by SPICAM when the large field of view (> 20 km on the limb) of the instrument is taken into account. Article in Journal/Newspaper South pole Université de Nantes: HAL-UNIV-NANTES Lefèvre ENVELOPE(-63.533,-63.533,-64.833,-64.833) South Pole Icarus 219 2 596 608 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Mars Atmosphere Nightglows [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] |
spellingShingle |
Mars Atmosphere Nightglows [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] Fedorova, Anna Lefèvre, Franck Guslyakova, S. Korablev, Oleg Bertaux, Jean-Loup Montmessin, Franck Reberac, Aurélie Gondet, Brigitte The O2 nightglow in the martian atmosphere by SPICAM onboard of Mars-Express |
topic_facet |
Mars Atmosphere Nightglows [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] |
description |
International audience We present observations of the O2(a1Δg) nightglow at 1.27 μm on Mars using the SPICAM IR spectrometer onboard of the Mars Express orbiter. In contrast to the O2(a1Δg) dayglow that results from the ozone photodissociation, the O2(a1Δg) nightglow is a product of the recombination of O atoms formed by CO2 photolysis on the dayside at altitudes higher than 80 km and transported downward above the winter pole by the Hadley circulation. The first detections of the O2(a1Δg) nightglow in 2010 indicate that it is about two order of magnitude less intense than the dayglow [ and ]. SPICAM IR sounds the Martian atmosphere in the near-IR range (1-1.7 μm) with the spectral resolution of 3.5 cm-1 in nadir, limb and solar occultation modes. In 2010 the vertical profiles of the O2(a1Δg) nightside emission have been obtained near the South Pole at latitudes of 82-83oS for two sequences of observations: Ls=111-120o and Ls=152-165o. The altitude of the emission maximum varied from 45 km on Ls=111-120o to 38-49 km on Ls=152-165o. Averaged vertically integrated intensity of the emission at these latitudes has shown an increase from 0.22 to 0.35 MR. Those values of total vertical emission rate are consistent with the OMEGA observations on Mars-Express in 2010. The estimated density of oxygen atoms at altitudes from 50 to 65 km varies from 1.5 1011 to 2.5 1011 cm-3. Comparison with the LMD general circulation model with photochemistry [Lefèvre et al., 2004; 2008] shows that the model reproduces fairly well the O2(a1Δg) emission layer observed by SPICAM when the large field of view (> 20 km on the limb) of the instrument is taken into account. |
author2 |
Space Research Institute of the Russian Academy of Sciences (IKI) Russian Academy of Sciences Moscow (RAS) Moscow Institute of Physics and Technology Moscow (MIPT) PLANETO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut d'astrophysique spatiale (IAS) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) |
format |
Article in Journal/Newspaper |
author |
Fedorova, Anna Lefèvre, Franck Guslyakova, S. Korablev, Oleg Bertaux, Jean-Loup Montmessin, Franck Reberac, Aurélie Gondet, Brigitte |
author_facet |
Fedorova, Anna Lefèvre, Franck Guslyakova, S. Korablev, Oleg Bertaux, Jean-Loup Montmessin, Franck Reberac, Aurélie Gondet, Brigitte |
author_sort |
Fedorova, Anna |
title |
The O2 nightglow in the martian atmosphere by SPICAM onboard of Mars-Express |
title_short |
The O2 nightglow in the martian atmosphere by SPICAM onboard of Mars-Express |
title_full |
The O2 nightglow in the martian atmosphere by SPICAM onboard of Mars-Express |
title_fullStr |
The O2 nightglow in the martian atmosphere by SPICAM onboard of Mars-Express |
title_full_unstemmed |
The O2 nightglow in the martian atmosphere by SPICAM onboard of Mars-Express |
title_sort |
o2 nightglow in the martian atmosphere by spicam onboard of mars-express |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/hal-00685095 https://doi.org/10.1016/j.icarus.2012.03.031 |
long_lat |
ENVELOPE(-63.533,-63.533,-64.833,-64.833) |
geographic |
Lefèvre South Pole |
geographic_facet |
Lefèvre South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
ISSN: 0019-1035 EISSN: 1090-2643 Icarus https://hal.science/hal-00685095 Icarus, 2012, 219 (2), pp.596-608. ⟨10.1016/j.icarus.2012.03.031⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2012.03.031 hal-00685095 https://hal.science/hal-00685095 doi:10.1016/j.icarus.2012.03.031 |
op_doi |
https://doi.org/10.1016/j.icarus.2012.03.031 |
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Icarus |
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219 |
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2 |
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596 |
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1766202801799561216 |