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dc.contributor.authorUlanowski, Joseph
dc.contributor.authorHarrison, R.G.
dc.contributor.authorNicoll, K.A.
dc.date.accessioned2013-10-28T14:30:49Z
dc.date.available2013-10-28T14:30:49Z
dc.date.issued2010
dc.identifier.citationUlanowski , J , Harrison , R G & Nicoll , K A 2010 , ' Measurements of atmospheric volcanic ash using an aerosol radiosonde ' Paper presented at EGU General Assembly , Vienna , Austria , 2/05/10 , .
dc.identifier.citationconference
dc.identifier.otherPURE: 2042345
dc.identifier.otherPURE UUID: eb45ccf7-5958-48e4-83ba-f1e7ee4520ec
dc.identifier.otherORCID: /0000-0003-4761-6980/work/32374639
dc.identifier.urihttp://hdl.handle.net/2299/11884
dc.description.abstractA low-cost, miniature aerosol particle counter has been developed, intended for use with balloon-borne radiosondes. The counter provides a size distribution in five size bins and is interfaced to a Vaisala RS92 radiosonde, which transmits data from the counter together with meteorological parameters and GPS position to a ground receiver at 1 Hz rate. The counter was used together with an electric charge sensor to profile ash layers from the Eyjafjalla eruption. The layer over Stranraer, Scotland, profiled on 19 April 2010 was centered on 4000m altitude and was about 600m thick, with fairly uniform, sharply defined aerosol concentration. The mean diameter by volume was 3 micrometres and the effective diameter 2.2 micrometres. Estimated optical thickness of the layer was 0.12 at 780nm. The mass concentration peaked around 0.3 mg per cubic metre, assuming the density of silica. The total mass load was 140 mg per square metre. The electric charge density within the layer was positive, and peaked around 0.5pC per cubic metre.en
dc.format.extent1
dc.language.isoeng
dc.titleMeasurements of atmospheric volcanic ash using an aerosol radiosondeen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionLight Scattering & Radiactive Properties
dc.description.statusPeer reviewed
dc.identifier.urlhttp://meetingorganizer.copernicus.org/EGU2010/EGU2010-15757.pdf
rioxxterms.versionSMUR
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue


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