Atlantic meridional overturning circulation during the Last Glacial Maximum.
The circulation of the deep Atlantic Ocean during the height of the last ice age appears to have been quite different from today. We review observations implying that Atlantic meridional overturning circulation during the Last Glacial Maximum was neither extremely sluggish nor an enhanced version of present-day circulation. The distribution of the decay products of uranium in sediments is consistent with a residence time for deep waters in the Atlantic only slightly greater than today. However, evidence from multiple water-mass tracers supports a different distribution of deep-water properties, including density, which is dynamically linked to circulation.
Lynch-Stieglitz
Jean
J
Georgia Institute of Technology, Atlanta, GA 30332, USA. jean@eas.gatech.edu
Adkins
Jess F
JF
Curry
William B
WB
Dokken
Trond
T
Hall
Ian R
IR
Herguera
Juan Carlos
JC
Hirschi
Joël J-M
JJ
Ivanova
Elena V
EV
Kissel
Catherine
C
Marchal
Olivier
O
Marchitto
Thomas M
TM
McCave
I Nicholas
IN
McManus
Jerry F
JF
Mulitza
Stefan
S
Ninnemann
Ulysses
U
Peeters
Frank
F
Yu
Ein-Fen
EF
Zahn
Rainer
R