EGS XXVI General Assembly, Nice, France, March 2001

PC3. Northern and southern hemisphere climate change and interhemispheric ocean interaction: leads and lags:

Event Information

With this session we would like to focus on the role of the ocean in contributing to possible leads and lags recorded in the Northern and Southern Hemisphere at times of major climate change. Apart from ice core records indicative of asynchrony of Antarctic and Greenland climate change, a number of Southern Hemisphere ocean sedimentary records also suggest a lead of Southern Hemisphere ocean circulation at higher latitudes during deglaciation. Moreover, South Atlantic IRD events appear - unlike the North Atlantic IRD events - to coincide with inferred (interstadial) warming in the North Atlantic. In addition, recent high-resolution North Atlantic paleoceanographic data point to possible ocean interaction at intermediate water depth playing a role during early (Northern Hemisphere) deglaciation. The session will be open for contributions dealing with these apparent phase relationships both from paleoceanographers and (terrestrial) paleoclimatologists as well as climate and ocean modelers.

Preliminary List of Solicited Speakers

Co-Sponsorship