dc.contributor.author | Mayne, NJ | |
dc.contributor.author | Lewis, N | |
dc.contributor.author | Lambert, FH | |
dc.contributor.author | Boutle, I | |
dc.contributor.author | Manners, J | |
dc.contributor.author | Acreman, D | |
dc.date.accessioned | 2018-02-02T08:30:41Z | |
dc.date.issued | 2018-02-26 | |
dc.description.abstract | Previous studies have demonstrated that continental carbon-silicate weathering is important to the continued habitability of a terrestrial planet. Despite this, few studies have considered the influence of land on the climate of a
tidally-locked planet. In this work we use the Met Office Unified Model, coupled to a land surface model, to investigate the climate effects of a continent located at the sub-stellar point. We choose to use the orbital and planetary
parameters of Proxima Centauri B as a template, to allow comparison with the work of others. A region of the surface
where Ts > 273:15K is always retained, and previous conclusions on the habitability of Proxima Centauri B remain
intact. We find that sub-stellar land causes global cooling, and increases day-night temperature contrasts by limiting
heat redistribution. Furthermore, we find that sub-stellar land is able to introduce a regime change in the atmospheric
circulation. Specifically, when a continent offset to the east of the sub-stellar point is introduced, we observe the
formation of two mid-latitude counterrotating jets, and a substantially weakened equatorial superrotating jet. | en_GB |
dc.description.sponsorship | N.T.L. and F.H.L
are grateful to the London Mathematical Society for financial support by means of an undergraduate research
bursary. I.A.B. and J.M. acknowledge the support of a
Met Office Academic Partnership secondment. N.J.M.'s
contributions were supported by a Leverhulme Trust
Research Project Grant. | en_GB |
dc.identifier.citation | Vol. 854 (2). Published online 26 February 2018. | en_GB |
dc.identifier.doi | 10.3847/1538-4357/aaad0a | |
dc.identifier.uri | http://hdl.handle.net/10871/31278 | |
dc.language.iso | en | en_GB |
dc.publisher | American Astronomical Society | en_GB |
dc.rights | © 2018. The American Astronomical Society. All rights reserved. | |
dc.subject | planets and satellites | en_GB |
dc.subject | atmospheres - planets and satellites | en_GB |
dc.subject | terrestrial planets - astrobiology | en_GB |
dc.title | The influence of a sub-stellar continent on the climate of a tidally-locked exoplanet | en_GB |
dc.type | Article | en_GB |
dc.identifier.issn | 1538-4357 | |
dc.description | This is the author accepted manuscript. The final version is available from American Astronomical Society via the DOI in this record. | en_GB |
dc.identifier.journal | Astrophysical Journal | en_GB |