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dc.contributor.authorJordan, Sean
dc.contributor.authorShorttle, Oliver
dc.contributor.authorRimmer, Paul B
dc.date.accessioned2022-06-15T15:00:57Z
dc.date.available2022-06-15T15:00:57Z
dc.date.issued2022-06-14
dc.date.submitted2021-12-21
dc.identifier.others41467-022-30804-8
dc.identifier.other30804
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/338118
dc.description.abstractAbstract: Life in the clouds of Venus, if present in sufficiently high abundance, must be affecting the atmospheric chemistry. It has been proposed that abundant Venusian life could obtain energy from its environment using three possible sulfur energy-metabolisms. These metabolisms raise the possibility of Venus’s enigmatic cloud-layer SO2-depletion being caused by life. We here couple each proposed energy-metabolism to a photochemical-kinetics code and self-consistently predict the composition of Venus’s atmosphere under the scenario that life produces the observed SO2-depletion. Using this photo-bio-chemical kinetics code, we show that all three metabolisms can produce SO2-depletions, but do so by violating other observational constraints on Venus’s atmospheric chemistry. We calculate the maximum possible biomass density of sulfur-metabolising life in the clouds, before violating observational constraints, to be ~10−5 − 10−3 mg m−3. The methods employed are equally applicable to aerial biospheres on Venus-like exoplanets, planets that are optimally poised for atmospheric characterisation in the near future.
dc.languageen
dc.publisherNature Publishing Group UK
dc.subjectArticle
dc.subject/704/445/3929
dc.subject/704/445/824
dc.subject/704/445/209
dc.subject/704/445/845
dc.subjectarticle
dc.titleProposed energy-metabolisms cannot explain the atmospheric chemistry of Venus
dc.typeArticle
dc.date.updated2022-06-15T15:00:57Z
prism.issueIdentifier1
prism.publicationNameNature Communications
prism.volume13
dc.identifier.doi10.17863/CAM.85527
dcterms.dateAccepted2022-05-18
rioxxterms.versionofrecord10.1038/s41467-022-30804-8
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidShorttle, Oliver [0000-0002-8713-1446]
dc.identifier.eissn2041-1723
pubs.funder-project-idSimons Foundation (599634)


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