TY - JOUR
T1 - Atmospheric CO2 forcing on glacial thermohaline circulation and climate
AU - Liu, Zheng Yu
AU - Shin, Sang Ik
AU - Webb, Robert S.
AU - Lewis, William
AU - Otto-Bliesner, Bette L.
PY - 2005/1/28
Y1 - 2005/1/28
N2 - A coupled climate model study indicates the paleoclimate record of glacial thermohaline circulation (THC) and reversed deep-sea temperature-salinity (T-S) distribution in the Atlantic can be explained largely by lower glacial atmospheric CO2 alone. The reduced CO2 leads to increased Southern Ocean wintertime sea-ice cover and salinity, increased production of dense Antarctic Bottom Water (AABW), enhanced cold and saline AABW penetration into the deep North Atlantic, increased oceanic vertical stability, and reduced North Atlantic Deep Water (NADW) circulation. The dominant role of CO2 forcing during the glacial implies a positive feedback between the Southern Ocean regulated THC and the glacial global carbon cycle.
AB - A coupled climate model study indicates the paleoclimate record of glacial thermohaline circulation (THC) and reversed deep-sea temperature-salinity (T-S) distribution in the Atlantic can be explained largely by lower glacial atmospheric CO2 alone. The reduced CO2 leads to increased Southern Ocean wintertime sea-ice cover and salinity, increased production of dense Antarctic Bottom Water (AABW), enhanced cold and saline AABW penetration into the deep North Atlantic, increased oceanic vertical stability, and reduced North Atlantic Deep Water (NADW) circulation. The dominant role of CO2 forcing during the glacial implies a positive feedback between the Southern Ocean regulated THC and the glacial global carbon cycle.
UR - https://www.scopus.com/pages/publications/16344387747
U2 - 10.1029/2004GL021929
DO - 10.1029/2004GL021929
M3 - Article
AN - SCOPUS:16344387747
SN - 0094-8276
VL - 32
SP - 1
EP - 4
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 2
ER -