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dc.contributor.authorHavnes, O.
dc.contributor.authorLatteck, R.
dc.contributor.authorHartquist, T.W.
dc.contributor.authorAntonsen, T.
dc.date.accessioned2019-06-24T10:39:11Z
dc.date.available2019-06-24T10:39:11Z
dc.date.issued2018-06-10
dc.description.abstractOn 30 June 2016 a layer of dust, possibly meteoric smoke particles (MSPs), was observed with a rocket borne probe at 69.29°N, 16.02°E and altitudes of ~74 km where patchy thin cloud layers, detected with the Middle Atmosphere Alomar Radar System, were present. The rocket traversed a layer with a net positive dust charge density of ~107 unit charges per cubic meters and a number density of neutral dust particles with sizes ≥4 nm of ~108 m−3. The positive charge density may require that elements that lower the photoelectric work function coat MSPs. The presence of this relatively large dust is consistent with smaller MSPs being swept out of the low mesospheric cloud region during the summer, while larger MSPs remain where their fall velocities equals the circulation updraught velocities. Large MSPs initially embedded in icy particles that subsequently sublimate may also fall until their fall velocities match the updraught velocities.en_US
dc.description.sponsorshipThe rocket campaign and the construction of the rocket instrumentation was supported by grants from the Norwegian Space Centre (VIT.04.14.7; VIT.02.14.1; VIT.03.15.7; VIT.03.16.7), the Research Council of Norway (240065), and by the Arctic University of Norway. Rocket and radar data for replication of results are available through the UiT Open Research Repository through the DOI <a href= https://doi.org/10.18710/PRJW7B.> https://doi.org/10.18710/PRJW7B</a>en_US
dc.descriptionPublished version, source at: <a href=https://doi.org/10.1029/2018GL078218>https://doi.org/10.1029/2018GL078218</a>en_US
dc.identifier.citationHavnes O, Latteck R, Hartquist T, Antonsen T. (2018) First Simultaneous Rocket and Radar Detections of Rare Low Summer Mesospheric Clouds.<i> Geophysical Research Letters, 45</i> (11),5727-5734. 10.1029/2018GL078218en_US
dc.identifier.cristinIDFRIDAID 1593794
dc.identifier.doi10.1029/2018GL078218
dc.identifier.issn0094-8276
dc.identifier.issn1944-8007
dc.identifier.urihttps://hdl.handle.net/10037/15592
dc.language.isoengen_US
dc.publisherAmerican Geophysical Union (AGU)en_US
dc.relation.journalGeophysical Research Letters
dc.relation.projectIDNorges forskningsråd: 240065en_US
dc.relation.projectIDNorges forskningsråd: Norwegian Space Centre. Grant Numbers: VIT.03.16.7, VIT.03.1en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Technology: 500::Rock and petroleum disciplines: 510en_US
dc.subjectVDP::Teknologi: 500::Berg‑ og petroleumsfag: 510en_US
dc.titleFirst Simultaneous Rocket and Radar Detections of Rare Low Summer Mesospheric Cloudsen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US


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