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Surface-to-mountaintop transport characterised by radon observations at the Jungfraujoch
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 2789830
Author(s) Griffiths, A. D.; Conen, F.; Weingartner, E.; Zimmermann, L.; Chambers, S. D.; Williams, A. G.; Steinbacher, M.
Author(s) at UniBasel Conen, Franz
Year 2014
Title Surface-to-mountaintop transport characterised by radon observations at the Jungfraujoch
Journal Atmospheric chemistry and physics
Volume 14
Number 23
Pages / Article-Number 12763-12779
Abstract Atmospheric 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.
Publisher European Geophysical Society
ISSN/ISBN 1680-7316
edoc-URL http://edoc.unibas.ch/dok/A6328930
Full Text on edoc No
Digital Object Identifier DOI 10.5194/acp-14-12763-2014
ISI-Number WOS:000346140100010
Document type (ISI) Article
 
   

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14/04/2024