Prospects for mapping temporal height variations of the seasonal CO 2 snow/ice caps at the Martian poles by co-registration of MOLA profiles
International audience We investigate the feasibility and demonstrate the merits of using Mars Orbiter Laser Altimeter (MOLA) profiles to retrieve seasonal height variations of CO 2 snow/ice cap in Mars' polar areas by applying a co-registration strategy. We present a prototype analysis on the...
Published in: | Planetary and Space Science |
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-03745282 https://doi.org/10.1016/j.pss.2022.105446 |
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ftccsdartic:oai:HAL:insu-03745282v1 2023-05-15T16:38:22+02:00 Prospects for mapping temporal height variations of the seasonal CO 2 snow/ice caps at the Martian poles by co-registration of MOLA profiles Xiao, Haifeng Stark, Alexander Steinbrügge, Gregor Thor, Robin Schmidt, Frédéric Oberst, Jürgen Géosciences Paris Saclay (GEOPS) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) 2022 https://hal-insu.archives-ouvertes.fr/insu-03745282 https://doi.org/10.1016/j.pss.2022.105446 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/arxiv/2109.04899 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pss.2022.105446 insu-03745282 https://hal-insu.archives-ouvertes.fr/insu-03745282 ARXIV: 2109.04899 BIBCODE: 2022P&SS.21405446X doi:10.1016/j.pss.2022.105446 Planetary and Space Science https://hal-insu.archives-ouvertes.fr/insu-03745282 Planetary and Space Science, 2022, 214, ⟨10.1016/j.pss.2022.105446⟩ Mars CO 2 ice Height variation MOLA Co-registration Pseudo cross-over adjustment Astrophysics - Earth and Planetary Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2022 ftccsdartic https://doi.org/10.1016/j.pss.2022.105446 2023-03-26T07:37:58Z International audience We investigate the feasibility and demonstrate the merits of using Mars Orbiter Laser Altimeter (MOLA) profiles to retrieve seasonal height variations of CO 2 snow/ice cap in Mars' polar areas by applying a co-registration strategy. We present a prototype analysis on the research region of [85.75°S, 86.25°S, 300°E, 330°E] that is located on the residual south polar cap. Our method comprises the recomputation of MOLA footprint coordinates with an updated Mars Global Surveyor (MGS) ephemeris and a revised Mars rotation model. The reprocessed MOLA dataset at the South Pole of Mars (poleward of 78°S) is then self-registered to form a coherent reference digital terrain model (DTM). We co-register segments of reprocessed MOLA profiles to the self-registered MOLA reference DTM to obtain the temporal height differences at either footprints or cross-overs. Subsequently, a two-step Regional Pseudo Cross-over Adjustment (RPCA) procedure is proposed and applied to post-correct the aforementioned temporal height differences for a temporal systematic bias and other residual errors. These pseudo cross-overs are formed by profile pairs that do not necessarily intersect, but are connected through the underlying DTM. Finally, CO 2 snow/ice temporal height variation is obtained by median-filtering those post-corrected temporal height differences. The precision of the derived height change time series is ∼4.7 cm. The peak-to-peak height variation is estimated to be ∼2 m. In addition, a pronounced "pit" (transient height accumulation) of ∼0.5 m in magnitude centered at L s = 210° in southern spring is observed. The proposed method opens the possibility to map the seasonal CO 2 snow/ice height variations at the entire North and South polar regions of Mars. Article in Journal/Newspaper Ice cap South pole Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) South Pole Planetary and Space Science 214 105446 |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Mars CO 2 ice Height variation MOLA Co-registration Pseudo cross-over adjustment Astrophysics - Earth and Planetary Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics [SDU]Sciences of the Universe [physics] |
spellingShingle |
Mars CO 2 ice Height variation MOLA Co-registration Pseudo cross-over adjustment Astrophysics - Earth and Planetary Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics [SDU]Sciences of the Universe [physics] Xiao, Haifeng Stark, Alexander Steinbrügge, Gregor Thor, Robin Schmidt, Frédéric Oberst, Jürgen Prospects for mapping temporal height variations of the seasonal CO 2 snow/ice caps at the Martian poles by co-registration of MOLA profiles |
topic_facet |
Mars CO 2 ice Height variation MOLA Co-registration Pseudo cross-over adjustment Astrophysics - Earth and Planetary Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics [SDU]Sciences of the Universe [physics] |
description |
International audience We investigate the feasibility and demonstrate the merits of using Mars Orbiter Laser Altimeter (MOLA) profiles to retrieve seasonal height variations of CO 2 snow/ice cap in Mars' polar areas by applying a co-registration strategy. We present a prototype analysis on the research region of [85.75°S, 86.25°S, 300°E, 330°E] that is located on the residual south polar cap. Our method comprises the recomputation of MOLA footprint coordinates with an updated Mars Global Surveyor (MGS) ephemeris and a revised Mars rotation model. The reprocessed MOLA dataset at the South Pole of Mars (poleward of 78°S) is then self-registered to form a coherent reference digital terrain model (DTM). We co-register segments of reprocessed MOLA profiles to the self-registered MOLA reference DTM to obtain the temporal height differences at either footprints or cross-overs. Subsequently, a two-step Regional Pseudo Cross-over Adjustment (RPCA) procedure is proposed and applied to post-correct the aforementioned temporal height differences for a temporal systematic bias and other residual errors. These pseudo cross-overs are formed by profile pairs that do not necessarily intersect, but are connected through the underlying DTM. Finally, CO 2 snow/ice temporal height variation is obtained by median-filtering those post-corrected temporal height differences. The precision of the derived height change time series is ∼4.7 cm. The peak-to-peak height variation is estimated to be ∼2 m. In addition, a pronounced "pit" (transient height accumulation) of ∼0.5 m in magnitude centered at L s = 210° in southern spring is observed. The proposed method opens the possibility to map the seasonal CO 2 snow/ice height variations at the entire North and South polar regions of Mars. |
author2 |
Géosciences Paris Saclay (GEOPS) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Xiao, Haifeng Stark, Alexander Steinbrügge, Gregor Thor, Robin Schmidt, Frédéric Oberst, Jürgen |
author_facet |
Xiao, Haifeng Stark, Alexander Steinbrügge, Gregor Thor, Robin Schmidt, Frédéric Oberst, Jürgen |
author_sort |
Xiao, Haifeng |
title |
Prospects for mapping temporal height variations of the seasonal CO 2 snow/ice caps at the Martian poles by co-registration of MOLA profiles |
title_short |
Prospects for mapping temporal height variations of the seasonal CO 2 snow/ice caps at the Martian poles by co-registration of MOLA profiles |
title_full |
Prospects for mapping temporal height variations of the seasonal CO 2 snow/ice caps at the Martian poles by co-registration of MOLA profiles |
title_fullStr |
Prospects for mapping temporal height variations of the seasonal CO 2 snow/ice caps at the Martian poles by co-registration of MOLA profiles |
title_full_unstemmed |
Prospects for mapping temporal height variations of the seasonal CO 2 snow/ice caps at the Martian poles by co-registration of MOLA profiles |
title_sort |
prospects for mapping temporal height variations of the seasonal co 2 snow/ice caps at the martian poles by co-registration of mola profiles |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03745282 https://doi.org/10.1016/j.pss.2022.105446 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
Ice cap South pole |
genre_facet |
Ice cap South pole |
op_source |
Planetary and Space Science https://hal-insu.archives-ouvertes.fr/insu-03745282 Planetary and Space Science, 2022, 214, ⟨10.1016/j.pss.2022.105446⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/2109.04899 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pss.2022.105446 insu-03745282 https://hal-insu.archives-ouvertes.fr/insu-03745282 ARXIV: 2109.04899 BIBCODE: 2022P&SS.21405446X doi:10.1016/j.pss.2022.105446 |
op_doi |
https://doi.org/10.1016/j.pss.2022.105446 |
container_title |
Planetary and Space Science |
container_volume |
214 |
container_start_page |
105446 |
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1766028642303868928 |