P04 - The Meridional Overturning Circulation: Mean State and variability

Convenors: Chris Meinen
Co-Convenors: Agatha De Boer, Gerard McCarthy, Sabrina Speich, Eugene Morozov 

The meridional overturning circulation (MOC) have been shown to correlate with important climate variables such as sea level rise, surface air temperature, precipitation patterns, hurricane intensification, atmospheric CO2, and other important quantities to society. Recognition of the importance of the MOC has over the last few decades made it the focus of intensive international research efforts. Insights have come from all latitudes: from the deep-water formation regions in the Greenland-Norwegian and Antarctic Seas to the subtropical Atlantic basins and everywhere in between. Investigations of the role of the MOC in other climate states than today, such as the Eocene-Oligocene transition or the Quaternary glacial cycles, have also produced exciting results.

Major advances have depended upon theoretical and numerical modeling studies as well as on in situ observations, and taken together these breakthroughs are bringing into better focus the role that the MOC is playing in the global climate and carbon systems.

This session welcomes abstracts on observations, theory, and numerical modeling of the MOC at all time periods and time scales, from the mean state, to daily, interannual, decadal, centennial and beyond. Abstracts discussing the mean and variability of the warm upper and cold deep flows associated with the MOC, and on MOC interactions with the broader climate system, are also welcome.