2024-03-29T06:08:44Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1151912021-12-28T16:33:48Zcom_10261_65com_10261_8col_10261_318
2015-05-14T09:08:50Z
urn:hdl:10261/115191
Hydrological change in Southern Europe responding to increasing North Atlantic overturning during Greenland Stadial 1
Bartolomé, Miguel
Moreno Caballud, Ana
Sancho Marcén, Carlos
Stoll, Heather
Cacho, Isabel
Spötl, Christoph
Belmonte, Anchel
Edwards, R. Lawrence
Cheng, H.
Hellstrom, John
speleothem
Iberia
Younger Dryas
stable isotopes
Greenland Stadial 1
32 páginas, 3 figuras
Greenland Stadial 1 (GS-1) was the last of a long series of severe cooling episodes in
the Northern Hemisphere during the last glacial period. Numerous North Atlantic and
European records reveal the intense environmental impact of that stadial whose origin
is attributed to an intense weakening of the Atlantic Meridional Overturning Circulation
(AMOC) in response to freshening of the North Atlantic (Broecker et al., 1988). Recent
high-resolution studies of European lakes revealed a mid GS-1 transition in the climatic
regimes (Bakke et al., 2009; Lane et al., 2013). The geographical extension of such
atmospheric changes and their potential coupling with ocean dynamics still remains
unclear. Here we use a sub-decadally resolved stalagmite record from the northern
Iberian Peninsula to further investigate the timing and forcing of this transition. A solid
interpretation of the environmental changes detected in this new, accurately dated,
stalagmite record is based on a parallel cave monitoring exercise. This record reveals a
gradual transition from dry to wet conditions starting at 12,500 b2k in parallel to a
progressive warming of the subtropical Atlantic ocean (Schmidt et al., 2011). The
observed atmospheric changes are proposed to be led by a progressive resumption of
the North Atlantic convection and highlight the complex regional signature of GS-1,
very distinctive to previous stadial events.
2015-05-14T09:08:50Z
2015-05-14T09:08:50Z
2015-05-11
artículo
Proceedings of the National Academy of Sciences (on-line first): (2015)
1091-6490
http://hdl.handle.net/10261/115191
10.1073/pnas.1503990112
25964366
eng
Postprint
http://dx.doi.org/10.1073/pnas.1503990112
Sí
openAccess
National Academy of Sciences (U.S.)