Water Trapping on Tidally Locked Terrestrial Planets Requires Special Conditions
Surface liquid water is essential for standard planetary habitability. Calculations of atmospheric circulation on tidally locked planets around M stars suggest that this peculiar orbital configuration lends itself to the trapping of large amounts of water in kilometers-thick ice on the night side, p...
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ftdatacite:10.48550/arxiv.1411.0540 2023-05-15T16:41:13+02:00 Water Trapping on Tidally Locked Terrestrial Planets Requires Special Conditions Yang, Jun Liu, Yonggang Hu, Yongyun Abbot, Dorian S. 2014 https://dx.doi.org/10.48550/arxiv.1411.0540 https://arxiv.org/abs/1411.0540 unknown arXiv https://dx.doi.org/10.1088/2041-8205/796/2/l22 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Earth and Planetary Astrophysics astro-ph.EP FOS Physical sciences article-journal Article ScholarlyArticle Text 2014 ftdatacite https://doi.org/10.48550/arxiv.1411.0540 https://doi.org/10.1088/2041-8205/796/2/l22 2022-04-01T12:23:55Z Surface liquid water is essential for standard planetary habitability. Calculations of atmospheric circulation on tidally locked planets around M stars suggest that this peculiar orbital configuration lends itself to the trapping of large amounts of water in kilometers-thick ice on the night side, potentially removing all liquid water from the day side where photosynthesis is possible. We study this problem using a global climate model including coupled atmosphere, ocean, land, and sea-ice components as well as a continental ice sheet model driven by the climate model output. For a waterworld we find that surface winds transport sea ice toward the day side and the ocean carries heat toward the night side. As a result, night-side sea ice remains O(10 m) thick and night-side water trapping is insignificant. If a planet has large continents on its night side, they can grow ice sheets O(1000 m) thick if the geothermal heat flux is similar to Earth's or smaller. Planets with a water complement similar to Earth's would therefore experience a large decrease in sea level when plate tectonics drives their continents onto the night side, but would not experience complete day-side dessication. Only planets with a geothermal heat flux lower than Earth's, much of their surface covered by continents, and a surface water reservoir O(10 %) of Earth's would be susceptible to complete water trapping. : 9 pages, 5 figures, The Astrophysical Journal Letters (accepted) Text Ice Sheet Sea ice DataCite Metadata Store (German National Library of Science and Technology) |
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Earth and Planetary Astrophysics astro-ph.EP FOS Physical sciences |
spellingShingle |
Earth and Planetary Astrophysics astro-ph.EP FOS Physical sciences Yang, Jun Liu, Yonggang Hu, Yongyun Abbot, Dorian S. Water Trapping on Tidally Locked Terrestrial Planets Requires Special Conditions |
topic_facet |
Earth and Planetary Astrophysics astro-ph.EP FOS Physical sciences |
description |
Surface liquid water is essential for standard planetary habitability. Calculations of atmospheric circulation on tidally locked planets around M stars suggest that this peculiar orbital configuration lends itself to the trapping of large amounts of water in kilometers-thick ice on the night side, potentially removing all liquid water from the day side where photosynthesis is possible. We study this problem using a global climate model including coupled atmosphere, ocean, land, and sea-ice components as well as a continental ice sheet model driven by the climate model output. For a waterworld we find that surface winds transport sea ice toward the day side and the ocean carries heat toward the night side. As a result, night-side sea ice remains O(10 m) thick and night-side water trapping is insignificant. If a planet has large continents on its night side, they can grow ice sheets O(1000 m) thick if the geothermal heat flux is similar to Earth's or smaller. Planets with a water complement similar to Earth's would therefore experience a large decrease in sea level when plate tectonics drives their continents onto the night side, but would not experience complete day-side dessication. Only planets with a geothermal heat flux lower than Earth's, much of their surface covered by continents, and a surface water reservoir O(10 %) of Earth's would be susceptible to complete water trapping. : 9 pages, 5 figures, The Astrophysical Journal Letters (accepted) |
format |
Text |
author |
Yang, Jun Liu, Yonggang Hu, Yongyun Abbot, Dorian S. |
author_facet |
Yang, Jun Liu, Yonggang Hu, Yongyun Abbot, Dorian S. |
author_sort |
Yang, Jun |
title |
Water Trapping on Tidally Locked Terrestrial Planets Requires Special Conditions |
title_short |
Water Trapping on Tidally Locked Terrestrial Planets Requires Special Conditions |
title_full |
Water Trapping on Tidally Locked Terrestrial Planets Requires Special Conditions |
title_fullStr |
Water Trapping on Tidally Locked Terrestrial Planets Requires Special Conditions |
title_full_unstemmed |
Water Trapping on Tidally Locked Terrestrial Planets Requires Special Conditions |
title_sort |
water trapping on tidally locked terrestrial planets requires special conditions |
publisher |
arXiv |
publishDate |
2014 |
url |
https://dx.doi.org/10.48550/arxiv.1411.0540 https://arxiv.org/abs/1411.0540 |
genre |
Ice Sheet Sea ice |
genre_facet |
Ice Sheet Sea ice |
op_relation |
https://dx.doi.org/10.1088/2041-8205/796/2/l22 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1411.0540 https://doi.org/10.1088/2041-8205/796/2/l22 |
_version_ |
1766031646840061952 |