Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland

Datos Bibliográficos

ID12266032
AutoresJonathan A Holmes (0000-0001-8426-8861, University College London, autor de correspondencia), Jonathan Holmes (0009-0007-3196-0652, University College London, UK,), Carol Arrowsmith (0000-0003-3849-5179, British Geological Survey), William Austin (University of St Andrews), William E N Austin (0000-0001-6544-3468, University of St Andrews), Joan Boyle (0000-0002-1172-1079, University of Liverpool), John Boyle (0000-0002-9404-6901, University of Liverpool), Elizabeth Fisher (0000-0001-7669-2830, University of Liverpool), Elizabeth H Fisher (0000-0002-6124-3618, University of Liverpool), R HOLME (0009-0002-2178-2083, University of Liverpool), J D Marshall (0000-0001-5632-3528, University of Liverpool), Jim Marshall (University of Liverpool), Frank Oldfield (0000-0002-3060-2411, University of Liverpool), Kuno van der Post (Medidata Solutions Worldwide, UK)
Año2010
Volumen20
Número7
Páginas1105-1111
Fecha de publicación2010-07-07
Peer ReviewedSí
Open AccessSí
TipoARTICLE
RevistaThe Holocene (JOURNAL)
Identificadores de la revistaISSN: 0959-6836 • E-ISSN: 1477-0911
EditorialSAGE Publishing (PUBLISHER • US)
DOI10.1177/0959683610369504
OpenAlexW2150901214
IdiomaEN
Citas recibidas3
Referencias citadas30

A 1000 year long subdecadal-resolution record of carbonate oxygen isotopes (δ 18 O c ) from Lough-na-Shade, Ireland, provides evidence for changing atmospheric circulation over northwest Europe. The total range of δ 18 O c values (>5‰) is too large to be explained by changes in water temperature. Moreover, good correlation between the lake record and a previously published δ 18 O time series from an Irish speleothem indicates that the changes in oxygen isotopes are best explained by variations in the isotopic composition of precipitation. The amplitude of change during this period is too large to be explained by shifts in condensation temperature. Instead we suggest that there have been changes in vapour source and transport paths connected with shifts in atmospheric circulation. Changes from a source area from further south within the North Atlantic to one further to the north could explain the prominent positive shift in oxygen-isotope values between the early eighteenth and early nineteenth centuries, for example. Our results also demonstrate the value of a ‘multiple-archive’ approach to deconvolving lake-based carbonate isotope profiles, which are often complex

Archaeology · Atmospheric Circulation · Atmospheric sciences · Carbonate · Cave · Climate change · Climatology · Geochemistry · Geography · Isotopes of oxygen · Paleoclimatology · Precipitation · Sediment · Speleothem · Stable isotope ratio · δ18O · Archaeology and ancient environmental studies · Chemistry · Environmental Science · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Geology · Oceanography · Paleontology