An investigation of the controls on Irish precipitation δ18O values on monthly and event timescales.

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dc.contributor.authorBaldini, LMen_AU
dc.contributor.authorMcDermott, Fen_AU
dc.contributor.authorBaldini, JULen_AU
dc.contributor.authorFischer, MJen_AU
dc.contributor.authorMollhoff, Men_AU
dc.date.accessioned2010-11-08T05:57:40Zen_AU
dc.date.available2010-11-08T05:57:40Zen_AU
dc.date.issued2010-11en_AU
dc.date.statistics2010-11en_AU
dc.description.abstractThis two-year study investigates the relative influence of meteorological variables (precipitation amount and temperature), atmospheric circulation, air mass history, and moisture source region on Irish precipitation oxygen isotopes (δ18Op) on event and monthly timescales. Single predictor correlations reveal that on the event scale, 20% of δ18Op variability is attributable to the amount effect and 7% to the temperature effect while on the monthly timescale the North Atlantic Oscillation accounts for up to 20% of δ18Op variability and the amount and temperature effects are not significant. In comparison, multivariate linear regression reveals that the interaction of temperature and precipitation amount explains up to 40% of δ18Op variance at event and monthly timescales. Five-day kinematic back trajectories suggest that the amount-weighted mean δ18Op value of southerly- and northerly-derived events are lower by 2‰ relative to events derived from the west. Because air mass history and atmospheric circulation appear to influence δ18Op in Ireland, Irish paleo-δ18Op proxy records are best interpreted as reflecting a combination of parameters, not just paleotemperature or paleorainfall. © 2010, Springer.en_AU
dc.identifier.citationBaldini, L. M., McDermott, F., Baldini, J. U. L., Fischer, M. J., & Mollhoff, M. (2010). An investigation of the controls on Irish precipitation δ18O values on monthly and event timescales. Climate Dynamics, 35(6), 977-993. doi:10.1007/s00382-010-0774-6en_AU
dc.identifier.govdoc3041en_AU
dc.identifier.issn0930-7575en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitleClimate Dynamicsen_AU
dc.identifier.pagination977-993en_AU
dc.identifier.urihttp://dx.doi.org/10.1007/s00382-010-0774-6en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2841en_AU
dc.identifier.volume35en_AU
dc.language.isoenen_AU
dc.publisherSpringeren_AU
dc.subjectPrecipitationen_AU
dc.subjectIrelanden_AU
dc.subjectTemperature rangeen_AU
dc.subjectOxygen isotopesen_AU
dc.subjectPaleoclimatologyen_AU
dc.subjectTrajectoriesen_AU
dc.titleAn investigation of the controls on Irish precipitation δ18O values on monthly and event timescales.en_AU
dc.typeJournal Articleen_AU
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