|Title||Constraints on oceanic meridional heat transport from combined measurements of oxygen and carbon|
|Publication Type||Journal Article|
|Year of Publication||2016|
|Authors||Resplandy L., Keeling RF, Stephens B.B, Bent J.D, Jacobson A., Rodenbeck C, Khatiwala S|
|Type of Article||Article|
|Keywords||air-sea flux; aircraft campaign; atmospheric oxygen; bulk data; deep; Hemispheric asymmetry; HIPPO; intertropical convergence zone; mixed-layer; model; north-atlantic; Ocean heat transport; overturning circulation; Potential oxygen; variability|
Despite its importance to the climate system, the ocean meridional heat transport is still poorly quantified. We identify a strong link between the northern hemisphere deficit in atmospheric potential oxygen (APO = O + 1.1 CO) and the asymmetry in meridional heat transport between northern and southern hemispheres. The recent aircraft observations from the HIPPO campaign reveal a northern APO deficit in the tropospheric column of 10.4 1.0 per meg, double the value at the surface and more representative of large-scale air-sea fluxes. The global northward ocean heat transport asymmetry necessary to explain the observed APO deficit is about 0.7-1.1 PW, which corresponds to the upper range of estimates from hydrographic sections and atmospheric reanalyses.
|Short Title||Clim. Dyn.|