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dc.contributor.authorJordan, Sean
dc.contributor.authorShorttle, Oliver
dc.contributor.authorRimmer, Paul B
dc.date.accessioned2022-06-24T23:30:19Z
dc.date.available2022-06-24T23:30:19Z
dc.date.issued2022-06-14
dc.identifier.issn2041-1723
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/338351
dc.description.abstractLife 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.publisherSpringer Science and Business Media LLC
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleProposed energy-metabolisms cannot explain the atmospheric chemistry of Venus.
dc.typeArticle
dc.date.updated2022-05-19T11:45:45Z
prism.publicationNameNat Commun
dc.identifier.doi10.17863/CAM.85760
dcterms.dateAccepted2022-05-18
rioxxterms.versionofrecord10.1038/s41467-022-30804-8
rioxxterms.versionVoR
dc.contributor.orcidJordan, Sean [0000-0002-2828-0396]
dc.contributor.orcidShorttle, Oliver [0000-0002-8713-1446]
dc.identifier.eissn2041-1723
rioxxterms.typeJournal Article/Review
pubs.funder-project-idSTFC (ST/V50659X/1)
cam.issuedOnline2022-06-14
cam.depositDate2022-05-19
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International