A European-wide 222Radon and 222Radon progeny comparison study
Dominik Schmithüsen1, Scott Chambers2, Bernd Fischer3, Stefan Gilge4, Juha Hatakka5, Victor Kazan6, Rolf Neubert7, Jussi Paatero5, Michel Ramonet6, Clemens Schlosser8, Sabine Schmid8, Alex Vermeulen9,10, and Ingeborg Levin11Institut für Umweltphysik (IUP), Heidelberg University, 69120 Heidelberg, Germany 2Institute for Environmental Research (ANSTO), Lucas Heights, Australia 3Umweltbundesamt (UBA), Meßstelle Schauinsland, Oberried, Germany 4Deutscher Wetterdienst, Hohenpeißenberg (HPB), Hohenpeißenberg Germany 5Finnish Meteorological Institution (FMI), Helsinki, Finland 6Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CE A-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France 7Centrum voor IsotopenOnderzoek (CIO), ESRIG, University of Groningen, Groningen, The Netherlands 8Bundesamt für Strahlenschutz (BfS), Freiburg, Germany 9Energy research Centre of the Netherlands (ECN), Petten, The Netherlands, 10now at: ICOS ERIC – Carbon Portal, Lund, Sweden
Received: 01 Apr 2016 – Accepted for review: 24 Aug 2016 – Discussion started: 24 Aug 2016
Abstract. A European-wide 222Radon/222Radon progeny comparison study has been conducted in order to determine correction factors that could be applied to existing atmospheric 222Radon data sets for quantitative use of this tracer in atmospheric transport model validation. Two compact and easy-to-transport Heidelberg Radon Monitors (HRM) were moved around to run for at least one month at each of the nine European measurement stations that were included in the comparison. Linear regressions between parallel data sets were calculated, yielding correction factors relative to the HRM ranging from 0.68 to 1.45. A calibration bias between ANSTO (Australian Nuclear Science and Technology Organisation) two-filter radon monitors and the HRM of ANSTO/HRM = 1.11 ± 0.05 was found. For continental stations, which use one-filter systems, preliminary 214Po/222Rn disequilibrium values were estimated to lie between 0.8 at mountain stations (e.g. Schauinsland) and 0.9 at non-mountain sites for sampling heights around 20 to 30 m above ground level. Respective corrections need to be applied to obtain a consistent European 222Radon data set for further applications.
Schmithüsen, D., Chambers, S., Fischer, B., Gilge, S., Hatakka, J., Kazan, V., Neubert, R., Paatero, J., Ramonet, M., Schlosser, C., Schmid, S., Vermeulen, A., and Levin, I.: A European-wide 222Radon and 222Radon progeny comparison study, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2016-111, in review, 2016.