Using radon-222 to distinguish between vertical transport processes at Jungfraujoch

Simple item page
dc.contributor.authorGriffiths, ADen_AU
dc.contributor.authorConen, Fen_AU
dc.contributor.authorZimmermann, Len_AU
dc.contributor.authorSteinbacher, Men_AU
dc.contributor.authorChambers, SDen_AU
dc.contributor.authorWeingartner, Een_AU
dc.contributor.authorWilliams, AGen_AU
dc.date.accessioned2020-05-18T06:29:06Zen_AU
dc.date.available2020-05-18T06:29:06Zen_AU
dc.date.issued2015-04-14en_AU
dc.date.statistics2020-05-18en_AU
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-lifen 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.identifier.articlenumberEGU2015-2098en_AU
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 European Geosciences Union General Assembly 2015, 12-17 April 2015, Vienna, Austria. Retrieved from https://meetingorganizer.copernicus.org/egu2015/meetingprogrammeen_AU
dc.identifier.conferenceenddate17 November 2015en_AU
dc.identifier.conferencenameEuropean Geosciences Union General Assembly 2015en_AU
dc.identifier.conferenceplaceVienna, Austriaen_AU
dc.identifier.conferencestartdate12 April 2015en_AU
dc.identifier.govdoc9496en_AU
dc.identifier.urihttps://meetingorganizer.copernicus.org/EGU2015/EGU2015-2098.pdfen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9458en_AU
dc.identifier.volume17en_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
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
EGU2015-2098.pdf
Size:
34.48 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications