Auflistung nach Autor:in "Chambers, Scott Dudley"

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    Publikation
    Surface-to-mountaintop transport characterised by radon observations at the Jungfraujoch
    (Copernicus, 2014) Griffiths, Alan; Conen, Franz; Weingartner, Ernest; Zimmermann, Lukas; Chambers, Scott Dudley; Williams, Alastair; Steinbacher, Martin
    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.
    01A - Beitrag in wissenschaftlicher Zeitschrift