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Eos, Vol. 87, No. 13, 28 March 2006 In the North Atlantic, cold, relatively salty
 

Summary: Eos, Vol. 87, No. 13, 28 March 2006
In the North Atlantic, cold, relatively salty
water sinks in the icy Labrador and Green-
land seas,forming North Atlantic Deep Water
(NADW).This circulates through the global
ocean, driving ocean overturning and global
heat transport and, thus, impacting global cli-
mate.As one of the most climatically sensi-
tive regions on Earth, the North Atlantic has
experienced abrupt changes to its ocean-
atmosphere-cryosphere system, triggered by
fluctuations in meltwater delivery to source
areas of NADW formation.
For about the past 100 thousand years,
these abrupt jumps in climate state have
manifested as `Dansgaard/Oeschger' (D/O)
oscillations (millennial-scale warm-cold
oscillations) and `Heinrich' events in ice and
marine sediment cores, respectively [e.g.,
Dansgaard et al.,1993; Bond and Lotti, 1995].

  

Source: Acton, Gary - Department of Geology, University of California, Davis

 

Collections: Geosciences