Surface-to-mountaintop transport characterised by radon observations at the Jungfraujoch

dc.contributor.authorGriffiths, ADen_AU
dc.contributor.authorConen, Fen_AU
dc.contributor.authorWeingartner, Een_AU
dc.contributor.authorZimmermann, Len_AU
dc.contributor.authorChambers, SDen_AU
dc.contributor.authorWilliams, AGen_AU
dc.contributor.authorSteinbacher, Men_AU
dc.date.accessioned2016-08-16T05:00:56Zen_AU
dc.date.available2016-08-16T05:00:56Zen_AU
dc.date.issued2014-12-05en_AU
dc.date.statistics2016-08-16en_AU
dc.description.abstractAtmospheric composition measurements at Jungfraujoch are affected intermittently by boundary-layer air which is brought to the station by processes including thermally driven (anabatic) mountain winds. Using observations of radon-222, and a new objective analysis method, we quantify the land-surface influence at Jungfraujoch hour by hour and detect the presence of anabatic winds on a daily basis. During 2010–2011, anabatic winds occurred on 40% of days, but only from April to September. Anabatic wind days were associated with warmer air temperatures over a large fraction of Europe and with a shift in air-mass properties, even when comparing days with a similar mean radon concentration. Excluding days with anabatic winds, however, did not lead to a better definition of the unperturbed aerosol background than a definition based on radon alone. This implies that a radon threshold reliably excludes local influences from both anabatic and non-anabatic vertical-transport processes. © Author(s),2014.en_AU
dc.identifier.citationGriffiths, A. D., Conen, F., Weingartner, E., Zimmermann, L., Chambers, S. D., Williams, A. G., & Steinbacher, M. (2014). Surface-to-mountaintop transport characterised by radon observations at the Jungfraujoch. Atmospheric Chemistry and Physics, 14(23), 12763-12779. doi:10.5194/acp-14-12763-2014en_AU
dc.identifier.govdoc6965en_AU
dc.identifier.issn1680-7324en_AU
dc.identifier.issue23en_AU
dc.identifier.journaltitleAtmospheric Chemistry and Physicsen_AU
dc.identifier.pagination12763-12779en_AU
dc.identifier.urihttp://dx.doi.org/10.5194/acp-14-12763-2014en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/7322en_AU
dc.identifier.volume14en_AU
dc.language.isoenen_AU
dc.publisherEuropean Geosciences Unionen_AU
dc.subjectAtmosphericsen_AU
dc.subjectRadon 222en_AU
dc.subjectWinden_AU
dc.subjectEuropeen_AU
dc.subjectAerosolsen_AU
dc.subjectMeasuring methodsen_AU
dc.titleSurface-to-mountaintop transport characterised by radon observations at the Jungfraujochen_AU
dc.typeJournal Articleen_AU
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