Prospects for Mapping Temporal Height Variations of the Seasonal CO2 Snow/Ice Caps at the Martian Poles by Co-registration of MOLA Profiles
We investigate the feasibility and demonstrate the merits of using Mars Orbiter Laser Altimeter (MOLA) profiles to retrieve seasonal height variations of CO2 snow/ice cap in Mars' polar areas by applying a co-registration strategy. We present a prototype analysis on the research region of [85.7...
Main Authors: | , , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
arXiv
2021
|
Subjects: | |
Online Access: | https://dx.doi.org/10.48550/arxiv.2109.04899 https://arxiv.org/abs/2109.04899 |
id |
ftdatacite:10.48550/arxiv.2109.04899 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.48550/arxiv.2109.04899 2023-05-15T16:38:22+02:00 Prospects for Mapping Temporal Height Variations of the Seasonal CO2 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 2021 https://dx.doi.org/10.48550/arxiv.2109.04899 https://arxiv.org/abs/2109.04899 unknown arXiv https://dx.doi.org/10.1016/j.pss.2022.105446 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Earth and Planetary Astrophysics astro-ph.EP Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences article-journal Article ScholarlyArticle Text 2021 ftdatacite https://doi.org/10.48550/arxiv.2109.04899 https://doi.org/10.1016/j.pss.2022.105446 2022-04-01T14:54:31Z We investigate the feasibility and demonstrate the merits of using Mars Orbiter Laser Altimeter (MOLA) profiles to retrieve seasonal height variations of CO2 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 underlaying DTM. Finally, CO2 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 ~4.9 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 Ls=210° in southern spring is observed. The proposed method opens the possibility to map the seasonal CO2 snow/ice height variations at the entire North and South polar regions of Mars. Text Ice cap South pole DataCite Metadata Store (German National Library of Science and Technology) South Pole |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Earth and Planetary Astrophysics astro-ph.EP Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences |
spellingShingle |
Earth and Planetary Astrophysics astro-ph.EP Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences Xiao, Haifeng Stark, Alexander Steinbrügge, Gregor Thor, Robin Schmidt, Frédéric Oberst, Jürgen Prospects for Mapping Temporal Height Variations of the Seasonal CO2 Snow/Ice Caps at the Martian Poles by Co-registration of MOLA Profiles |
topic_facet |
Earth and Planetary Astrophysics astro-ph.EP Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences |
description |
We investigate the feasibility and demonstrate the merits of using Mars Orbiter Laser Altimeter (MOLA) profiles to retrieve seasonal height variations of CO2 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 underlaying DTM. Finally, CO2 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 ~4.9 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 Ls=210° in southern spring is observed. The proposed method opens the possibility to map the seasonal CO2 snow/ice height variations at the entire North and South polar regions of Mars. |
format |
Text |
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 CO2 Snow/Ice Caps at the Martian Poles by Co-registration of MOLA Profiles |
title_short |
Prospects for Mapping Temporal Height Variations of the Seasonal CO2 Snow/Ice Caps at the Martian Poles by Co-registration of MOLA Profiles |
title_full |
Prospects for Mapping Temporal Height Variations of the Seasonal CO2 Snow/Ice Caps at the Martian Poles by Co-registration of MOLA Profiles |
title_fullStr |
Prospects for Mapping Temporal Height Variations of the Seasonal CO2 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 CO2 Snow/Ice Caps at the Martian Poles by Co-registration of MOLA Profiles |
title_sort |
prospects for mapping temporal height variations of the seasonal co2 snow/ice caps at the martian poles by co-registration of mola profiles |
publisher |
arXiv |
publishDate |
2021 |
url |
https://dx.doi.org/10.48550/arxiv.2109.04899 https://arxiv.org/abs/2109.04899 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
Ice cap South pole |
genre_facet |
Ice cap South pole |
op_relation |
https://dx.doi.org/10.1016/j.pss.2022.105446 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.48550/arxiv.2109.04899 https://doi.org/10.1016/j.pss.2022.105446 |
_version_ |
1766028637075668992 |