Global ocean response to orbital forcing in the Holocene. Paleoceanography 18

• Main Authors: Z. Liu, E. Brady, J. Lynch-stieglitz
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2003
• Subjects: Change; Arctic; Southern Ocean
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.597.2823; http://shadow.eas.gatech.edu/~jean/Liu2003.pdf

[1] Global upper ocean evolution in the Holocene is studied in two coupled ocean-atmosphere models under orbital forcing conditions at 3, 6, 8, and 11 ka. The annual mean sea surface temperature (SST) changes in the early to mid-Holocene are found to be forced mainly by the annual mean insolation forcing with an overall symmetric response of colder equator (<0.5C)/warmer high latitudes (<0.4C in the Southern Ocean and>1C in the Arctic). This SST change is consistent with a synthesis of mid-Holocene paleo-SST records. In contrast, the temperature response in the thermocline is dominated by an antisymmetric pattern with a cooling (warming) in the Northern (Southern) Hemisphere midlatitudes. The thermocline response is determined predominantly by surface water subduction, and ultimately, the insolation forcing in local late winter. INDEX TERMS: 1610 Global