Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/9458
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dc.contributor.authorGriffiths, AD-
dc.contributor.authorConen, F-
dc.contributor.authorZimmermann, L-
dc.contributor.authorSteinbacher, M-
dc.contributor.authorChambers, SD-
dc.contributor.authorWeingartner, E-
dc.contributor.authorWilliams, AG-
dc.date.accessioned2020-05-18T06:29:06Z-
dc.date.available2020-05-18T06:29:06Z-
dc.date.issued2015-04-14-
dc.identifier.citationGriffiths, A., Chambers, S., Conen, F., Weingartner, E., Zimmermann, L., Williams, A., & Steinbacher, M. (2015). Using radon-222 to distinguish between vertical transport processes at Jungfraujoch. Paper presented at the EGU General Assembly, 12-17 April 2015, Vienna, Austria. Abstract retrieved from https://meetingorganizer.copernicus.org/egu2015/meetingprogrammeen_AU
dc.identifier.govdoc9496-
dc.identifier.urihttps://meetingorganizer.copernicus.org/EGU2015/EGU2015-2098.pdfen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9458-
dc.description.abstractTrace gases measured at Jungfrajoch, a key baseline monitoring station in the Swiss Alps, are tranported from the surface to the alpine ridge by several different processes. On clear days with weak synoptic forcing, thermally-driven upslope mountain winds (anabatic winds) are prevalent. Using hourly radon–222 observations, which are often used to identify air of terrestrial origin, we used the shape of the diurnal cycle to sort days according to the strength of anabatic winds. Radon is ideal as an airmass tracer because it is emitted from soil at a relatively constant rate, it is chemically inert, and decays with a half-life of 3.8 days. Because of its short half-life, radon concentrations are much lower in the free troposphere than in boundary-layer air over land. For comparable radon concentrations, anabatic wind days at Jungfraujoch are different from non-anabatic days in terms of the average wind speed, humidity, air temperature anomalies, and trace species. As a consequence, future studies could be devised which focus on a subset of days, e.g. by excluding anabatic days, with the intention of choosing a set of days which can be more accurately simulated by a transport model. © Author(s) 2014.en_AU
dc.language.isoenen_AU
dc.publisherEuropean Geosciences Unionen_AU
dc.subjectRadon 222en_AU
dc.subjectGasesen_AU
dc.subjectSwitzerlanden_AU
dc.subjectAlpsen_AU
dc.subjectWinden_AU
dc.subjectTroposphereen_AU
dc.subjectBoundary layersen_AU
dc.subjectHumidityen_AU
dc.titleUsing radon-222 to distinguish between vertical transport processes at Jungfraujochen_AU
dc.typeConference Abstracten_AU
dc.date.statistics2020-05-18-
Appears in Collections:Conference Publications

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