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dc.contributor.authorAntonsen, Tarjei
dc.contributor.authorHavnes, Ove
dc.contributor.authorMann, Ingrid
dc.date.accessioned2018-06-29T11:33:18Z
dc.date.available2018-06-29T11:33:18Z
dc.date.issued2017-11-26
dc.description.abstractIce particles populating noctilucent clouds and being responsible for polar mesosphericsummer echoes exist around the mesopause in the altitude range from 80 to 90 km during polar summer.The particles are observed when temperatures around the mesopause reach a minimum, and it is presumedthat they consist of water ice with inclusions of smaller mesospheric smoke particles (MSPs). This workprovides estimates of the mean size distribution of MSPs through analysis of collision fragments of the iceparticles populating the mesospheric dust layers. We have analyzed data from two triplets of mechanicallyidentical rocket probes, MUltiple Dust Detector (MUDD), which are Faraday bucket detectors with impactgrids that partly fragments incoming ice particles. The MUDD probes were launched from Andøya SpaceCenter (69∘17’N, 16∘1’E) on two payloads during the MAXIDUSTY campaign on 30 June and 8 July 2016,respectively. Our analysis shows that it is unlikely that ice particles produce significant current to thedetector, and that MSPs dominate the recorded current. The size distributions obtained from these currents,which reflect the MSP sizes, are described by inverse power laws with exponents of k ∼ [3.3 ± 0.7, 3.7 ± 0.5]and k ∼ [3.6 ± 0.8, 4.4 ± 0.3] for the respective flights. We derived two k values for each flight dependingon whether the charging probability is proportional to area or volume of fragments. We also confirm thatMSPs are probably abundant inside mesospheric ice particles larger than a few nanometers, and the volumefilling factor can be a few percent for reasonable assumptions of particle properties.en_US
dc.description.sponsorshipNorwegian Space Centreen_US
dc.descriptionAn edited version of this paper was published by AGU. Copyright (2017) American Geophysical Union. Antonsen, T., Havnes, O. & Mann, I. (2017). Estimates of the size distribution of meteoric smoke particles from rocket-borne impact probes. Journal of Geophysical Research: Atmospheres, 12353-12365. <a href=https://doi.org/10.1002/2017JD027220> https://doi.org/10.1002/2017JD027220</a>.en_US
dc.identifier.citationAntonsen, T., Havnes, O. & Mann, I. (2017). Estimates of the size distribution of meteoric smoke particles from rocket-borne impact probes. <i>Journal of Geophysical Research: Atmospheres, 122</i>(22), 12353 - 12365. https://doi.org/10.1002/2017JD027220
dc.identifier.cristinIDFRIDAID 1518393
dc.identifier.doi10.1002/2017JD027220
dc.identifier.issn2169-897X
dc.identifier.issn2169-8996
dc.identifier.urihttps://hdl.handle.net/10037/13059
dc.language.isoengen_US
dc.publisherAmerican Geophysical Union (AGU)en_US
dc.relation.ispartofAntonsen, T. (2019). In-situ Measurements of Mesospheric Aerosols. On the observable characteristics of nanoscale ice and meteoric smoke particles. Doctoral thesis. <a href=http://hdl.handle.net/10037/14521>http://hdl.handle.net/10037/14521. </a>
dc.relation.journalJournal of Geophysical Research - Atmospheres
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/ROMFORSK/240065/Norway/In Situ,Remote,and Laboratory Investigations of Mesospheric Aerosols/Dust and Their Role in Atmospheric Chemical and Physical Processes//en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430en_US
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430en_US
dc.titleEstimates of the size distribution of meteoric smoke particles from rocket-borne impact probesen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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