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dc.contributor.authorTanaka, Kyoko
dc.contributor.authorMann, Ingrid
dc.contributor.authorKimura, Yuki
dc.date.accessioned2022-08-24T10:29:43Z
dc.date.available2022-08-24T10:29:43Z
dc.date.issued2022-04-28
dc.description.abstractObservations of polar mesospheric clouds have revealed the presence of solid ice particles in the upper mesosphere at high latitudes; however, their formation mechanism remains uncertain. In this study, we investigated the formation process of ice particles through nucleation from small amounts of water vapor at low temperatures. Previous studies that used classical nucleation theory have shown that amorphous solid water particles can nucleate homogeneously at conditions that are present in the mesosphere. However, the rate predictions for water in classical nucleation theory disagree with experimental measurements by several orders of magnitude. We adopted a semi-phenomenological model for the nucleation process, which corrects the evaluation of the molecular cluster formation energy using the second virial coefficient, which agrees with both experiments and molecular dynamics simulations. To calculate the nucleation process, we applied atmospheric conditions for the temperature, pressure, numerical density of dust grains, and cooling rate. The results indicate that homogeneous water nucleation is extremely unlikely to occur in the mesosphere, while heterogeneous nucleation occurs effectively. Dust grains generated by meteor ablation can serve as nuclei for heterogeneous nucleation. We also showed that the ice can form directly in a crystalline state, rather than an amorphous state.en_US
dc.identifier.citationTanaka, Mann, Kimura. Formation of ice particles through nucleation in the mesosphere. Atmospheric Chemistry and Physics (ACP). 2022;22.8:5639-5650en_US
dc.identifier.cristinIDFRIDAID 2013491
dc.identifier.doi10.5194/acp-22-5639-2022
dc.identifier.issn1680-7316
dc.identifier.issn1680-7324
dc.identifier.urihttps://hdl.handle.net/10037/26375
dc.language.isoengen_US
dc.publisherCopernicus Publicationsen_US
dc.relation.journalAtmospheric Chemistry and Physics (ACP)
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.subjectVDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437en_US
dc.subjectVDP::Mathematics and natural scienses: 400::Physics: 430::Space and plasma physics: 437en_US
dc.titleFormation of ice particles through nucleation in the mesosphereen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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