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Author Rogerson, M ♦ Rohling, Eelco J ♦ Weaver, Philip PE
Source PANGAEA
Content type Text
Publisher PANGAEA
File Format TSV
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Earth sciences ♦ Geology, hydrology & meteorology
Subject Keyword Lithosphere
Abstract We demonstrate that changes in the behavior of the Mediterranean Outflow Water (MOW) prior to and through the last deglaciation played an important role in promoting Meridional Overturning Circulation (MOC). Estimation of past MOW salt and heat fluxes indicates that they gradually increased through the last deglaciation. Between 17.5 and 14.6 thousand years ago (ka B.P., where B.P. references year 1950), net evaporation from the Mediterranean exported sufficient fresh water from the North Atlantic catchment to cause an average salinity increase of 0.5 psu throughout the upper 2000 m of the entire North Atlantic to the north of 25°N. Combined with rapid intensification and shoaling of the MOW plume, which we identify around 15-14.5 ka B.P., this deglacial MOW-related salt accumulation preconditioned the North Atlantic for abrupt resumption of the MOC at 14.6 ka B.P.
Spatial Coverage Latitude: 35.905557;Longitude: -7.333333
Description Note: 32 data points
Part of series Supplement to: Rogerson, M et al. (2006): Promotion of meridional overturning by Mediterranean-derived salt during the last deglaciation. Paleoceanography, 21(4), PA4101, https://doi.org/10.1029/2006PA001306
Educational Use Research
Learning Resource Type Data Set
Publisher Date 2014-06-27
Rights License https://creativecommons.org/licenses/by/3.0/


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