Application for 222Rn in atmospheric research

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dc.contributor.authorChambers, SDen_AU
dc.contributor.authorWilliams, AGen_AU
dc.contributor.authorZahorowski, Wen_AU
dc.contributor.authorGriffiths, ADen_AU
dc.date.accessioned2022-11-16T01:18:47Zen_AU
dc.date.available2022-11-16T01:18:47Zen_AU
dc.date.issued2012-10-16en_AU
dc.date.statistics2022-02-02en_AU
dc.description.abstractRadon-222 (radon) is a relatively short-lived (half-life 3.82 d), naturally occurring, radioactive gas, with a relatively consistent and well-defined terrestrial flux, and almost negligible oceanic flux. Being a noble, poorly-soluble gas that does not accumulate in the atmosphere, it is an ideal tracer of recent (<2-3 weeks) air mass contact with ice-free terrestrial regions. In conjunction with air mass back trajectory analysis, radon is thus a useful tool with which to perform fetch analyses for observed pollution events. Since radon’s half-life is much greater than the turbulent timescale in the atmospheric boundary layer (~1 hour), it can be considered a conservative tracer in such situations. Consequently, radon profiles or gradient measurements in the lower atmosphere also provide valuable insight into vertical mixing processes under a range of atmospheric conditions. This presentation will provide an overview of ANSTO’s radon measurement capabilities (including: standalone detectors, tall-tower gradient measurements, aircraft profile measurements and flux chambers), with recent examples of their recent application. Radon’s physical characteristics also make it ideal for the evaluation of transport and mixing schemes of weather, climate or chemical models. This presentation will also showcase a radon flux map of Australia, developed at ANSTO to improve the radon source function employed in regional models.en_AU
dc.identifier.citationChambers, S. D., Williams, A. G., Zahorowski, W., & Griffiths, A. D. (2012). Application for 222Rn in atmospheric research. Paper presented to the 12th South Pacific Environmental Radioactivity Association Conference (SPERA 2012), Sydney, Australia, Tuesday 16 October – Friday 19 October 2012. Lucas Heights, NSW: Australian Nuclear Science and Technology Organisation. (pp. 12).en_AU
dc.identifier.conferenceenddate19 October 2012en_AU
dc.identifier.conferencename12th South Pacific Environmental Radioactivity Association Conference (SPERA 2012)en_AU
dc.identifier.conferenceplaceSydney, Australiaen_AU
dc.identifier.conferencestartdate16 October 2012en_AU
dc.identifier.pagination12en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14057en_AU
dc.language.isoenen_AU
dc.publisherAustralian Nuclear Science and Technology Organisationen_AU
dc.subjectRadon 222en_AU
dc.subjectHalf-lifeen_AU
dc.subjectRadiation fluxen_AU
dc.subjectTracer techniquesen_AU
dc.subjectIceen_AU
dc.subjectAiren_AU
dc.subjectAtmospheresen_AU
dc.titleApplication for 222Rn in atmospheric researchen_AU
dc.typeConference Abstracten_AU
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