10.1594/PANGAEA.726686
Mix, Alan C
Alan C
Mix
0000-0001-7108-3534
Ruddiman, William F
William F
Ruddiman
McIntyre, Andrew
Andrew
McIntyre
Estimates of annual mean surface temperatures in the late Quaternary of the tropical Atlantic
PANGAEA
1986
Trigger corer
Gravity corer
Kasten corer
Piston corer
A150/180
EN06601
M25
RC09
RC13
RC24
V15
V22
V23
V25
V29
V30
V32
Endeavor
Meteor (1964)
Robert Conrad
Vema
Lamont-Doherty Earth Observatory, Columbia University (LDEO)
1959-05-08T00:00:00/1983-04-03T00:00:00
en
Supplementary Publication Series of Datasets
10.1029/PA001i001p00043
34 datasets
application/zip
Creative Commons Attribution 3.0 Unported
At least two modes of glacial-interglacial climate change have existed within the tropical Atlantic Ocean during the last 20,000 years. The first mode (defined by cold glacial and warm interglacial conditions) occurred symmetrically north and south of the equator and dominated the eastern boundary currents and tropical upwelling areas. This pattern suggests that mode 1 is driven by a glacial modification of surface winds in both hemispheres. The second mode of oceanic climate change, defined by temperature extremes centered on the deglaciation, was hemispherically asymmetrical, with the northern tropical Atlantic relatively cold and the southern tropical Atlantic relatively warm during deglaciation. A likely cause for this pattern of variation is a reduction of the presently northward cross-equatorial heat flux during deglaciation. No single mechanism accounts for all the data. Potential contributors to oceanic climate changes are linkage to high-latitude climates, modification of monsoonal winds by ice sheet and/or insolation changes, atmospheric CO2 and greenhouse effects, indirect effects of glacial meltwater, and variations in thermohaline overturn of the oceans.
Supplement to: Mix, Alan C; Ruddiman, William F; McIntyre, Andrew (1986): Late Quaternary paleoceanography of the Tropical Atlantic, 1: spatial variability of annual mean sea-surface temperatures, 0-20,000 years B.P. Paleoceanography, 1(1), 43-66
-75.9333
6.05
-10.07
34.78
East Atlantic