| Describing the annual cyclic behaviour of 7Be concentrations in surface air in Oceania. | |
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MedLine Citation:
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PMID: 18375023 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Surface air concentrations of 7Be at a number of stations in Oceania show a distinct annual cycle. We apply a sinusoidal model to describe this cycle. The results show that peak 7Be concentrations in surface air occur during early spring at tropical latitudes and during mid-to-late summer at middle latitudes. Comparison with available 90Sr surface air data for the southern hemisphere indicates that stratosphere-to-troposphere exchange is an active atmospheric process controlling the 7Be annual cycle throughout the Oceania region. Vertical transport of air within the troposphere also seems to influence the observed annual cycle. Seasonality in rainfall is not thought to control the annual cyclic behaviour of 7Be in surface air. |
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Authors:
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Che Doering; Riaz Akber |
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Publication Detail:
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Type: Journal Article Date: 2008-03-28 |
Journal Detail:
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Title: Journal of environmental radioactivity Volume: 99 ISSN: 0265-931X ISO Abbreviation: J Environ Radioact Publication Date: 2008 Oct |
Date Detail:
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Created Date: 2008-09-01 Completed Date: 2009-01-26 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8508119 Medline TA: J Environ Radioact Country: England |
Other Details:
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Languages: eng Pagination: 1703-7 Citation Subset: IM |
Affiliation:
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Radiological Laboratory, School of Physical and Chemical Sciences, Queensland University of Technology, 2 George Street, Brisbane, Qld. 4000, Australia. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Air Pollutants, Radioactive
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analysis* Beryllium / analysis* Geography Oceania Radiation Monitoring / methods Radioisotopes / analysis* Seasons |
| Chemical | |
Reg. No./Substance:
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0/Air Pollutants, Radioactive; 0/Radioisotopes; 7440-41-7/Beryllium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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