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dc.contributor.authorSchnaiter, Martin
dc.contributor.authorJärvinen, Emma
dc.contributor.authorVochezer, Paul
dc.contributor.authorAbdelmonem, Ahmed
dc.contributor.authorWagner, Robert
dc.contributor.authorJourdan, Olivier
dc.contributor.authorMioche, Guillaume
dc.contributor.authorShcherbakov, Valery N.
dc.contributor.authorSchmitt, Carl G.
dc.contributor.authorTricoli, Ugo
dc.contributor.authorUlanowski, Zbigniew
dc.contributor.authorHeymsfield, Andrew J.
dc.date.accessioned2016-03-08T11:43:20Z
dc.date.available2016-03-08T11:43:20Z
dc.date.issued2016-04-25
dc.identifier.citationSchnaiter , M , Järvinen , E , Vochezer , P , Abdelmonem , A , Wagner , R , Jourdan , O , Mioche , G , Shcherbakov , V N , Schmitt , C G , Tricoli , U , Ulanowski , Z & Heymsfield , A J 2016 , ' Cloud chamber experiments on the origin of ice crystal complexity in cirrus clouds ' , Atmospheric Chemistry and Physics , vol. 16 , no. 8 , pp. 5091-5110 . https://doi.org/10.5194/acp-16-5091-2016
dc.identifier.issn1680-7316
dc.identifier.otherPURE: 9328638
dc.identifier.otherPURE UUID: 54e9dcdc-c414-4b92-8149-a73d30abcf7e
dc.identifier.otherScopus: 84966292298
dc.identifier.otherScopus: 84956494109
dc.identifier.otherScopus: 84966292298
dc.identifier.otherORCID: /0000-0003-4761-6980/work/32374612
dc.identifier.urihttp://hdl.handle.net/2299/16733
dc.descriptionThis is an open access article, made available under the terms of the Creative Commons attribution license CC BY 3.0 https://creativecommons.org/licenses/by/3.0/
dc.description.abstractThis study reports on the origin of ice crystal complexity and its influence on the angular light scattering properties of cirrus clouds. Cloud simulation experiments were conducted at the AIDA (Aerosol Interactions and Dynamics in the Atmosphere) cloud chamber of the Karlsruhe Institute of Technology (KIT). A new experimental procedure was applied to grow and sublimate ice particles at defined super- and subsaturated ice conditions and for temperatures in the −40 to −60 °C range. The experiments were performed for ice clouds generated via homogeneous and heterogeneous initial nucleation. Ice crystal complexity was deduced from measurements of spatially resolved single particle light scattering patterns by the latest version of the Small Ice Detector (SID-3). It was found that a high ice crystal complexity is dominating the microphysics of the simulated clouds and the degree of this complexity is dependent on the available water vapour during the crystal growth. Indications were found that the crystal complexity is influenced by unfrozen H2SO4/H2O residuals in the case of homogeneous initial ice nucleation. Angular light scattering functions of the simulated ice clouds were measured by the two currently available airborne polar nephelometers; the Polar Nephelometer (PN) probe of LaMP and the Particle Habit Imaging and Polar Scattering (PHIPS-HALO) probe of KIT. The measured scattering functions are featureless and flat in the side- and backward scattering directions resulting in low asymmetry parameters g around 0.78. It was found that these functions have a rather low sensitivity to the crystal complexity for ice clouds that were grown under typical atmospheric conditions. These results have implications for the microphysical properties of cirrus clouds and for the radiative transfer through these clouds.en
dc.format.extent20
dc.language.isoeng
dc.relation.ispartofAtmospheric Chemistry and Physics
dc.rightsOpen
dc.subjectAtmospheric Science
dc.titleCloud chamber experiments on the origin of ice crystal complexity in cirrus cloudsen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionLight Scattering & Radiactive Properties
dc.contributor.institutionCentre for Atmospheric and Climate Physics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2016-04-25
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.5194/acp-16-5091-2016
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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