Monsoonal influence on southern hemisphere (CO2)-C-14

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dc.contributor.authorHua, Qen_AU
dc.contributor.authorBarbetti, Men_AU
dc.contributor.authorLevchenko, VAen_AU
dc.contributor.authorD'Arrigo, RDen_AU
dc.contributor.authorBuckley, BMen_AU
dc.contributor.authorSmith, AMen_AU
dc.date.accessioned2014-04-11T06:26:01Zen_AU
dc.date.available2014-04-11T06:26:01Zen_AU
dc.date.issued2012-10-11en_AU
dc.date.statistics2014-04-11en_AU
dc.description.abstractAnnual rings of a cross-dated teak tree core from Muna Island, Sulawesi, Indonesia in the southern equatorial tropics were analysed for radiocarbon from 1951-1979. C-14 levels at Muna started rising in 1956 and reached a maximum value of 667% in early 1965. The Muna Delta C-14 levels are significantly higher than those derived from the other Southern Hemisphere (SH) C-14 records (including tree rings and atmospheric CO2 sampling) for 1959 and 1963-1965. During the growing season of teak tree rings at this location (Nov-Apr) the Inter-tropical Convergence Zone (ITCZ) moves southward of Muna. Our results indicate that the island is strongly influenced by Northern Hemisphere (NH) air masses carried by the winter Asian monsoon, while the other more southerly SH sites remain covered by SH air masses. This monsoonal effect on atmospheric C-14 at Muna is evident during the periods of rapidly rising atmospheric C-14 (1959 and 1963-1965), when there is an enhanced C-14 contrast between northern and southern air masses. © 2012, American Geophysical Union.en_AU
dc.identifier.articlenumberL19806en_AU
dc.identifier.citationHua, Q., Barbetti, M., Levchenko, V. A., D'Arrigo, R. D., Buckley, B. M., & Smith, A. M. (2012). Monsoonal influence on southern hemisphere (CO2)-C-14. Geophysical Research Letters, 39, Article Number L19806. doi:10.1029/2012GL052971en_AU
dc.identifier.govdoc4725en_AU
dc.identifier.issn0094-8276en_AU
dc.identifier.journaltitleGeophysical Research Lettersen_AU
dc.identifier.urihttp://dx.doi.org/10.1029/2012GL052971en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5426en_AU
dc.identifier.volume39en_AU
dc.language.isoenen_AU
dc.publisherAmerican Geophysical Unionen_AU
dc.subjectMonsoonsen_AU
dc.subjectTree ringsen_AU
dc.subjectSouthern Hemisphereen_AU
dc.subjectBombsen_AU
dc.subjectRainen_AU
dc.subjectIndonesiaen_AU
dc.subjectAustraliaen_AU
dc.subjectThailanden_AU
dc.titleMonsoonal influence on southern hemisphere (CO2)-C-14en_AU
dc.typeJournal Articleen_AU
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