Could meltwater pulses have sneaked unnoticed into the deep ocean during the last glacial?
Roche, D.M., Renssen, H., Weber, S.L., Goosse, H. Geophysical Research Letters, 34(24): L24708, 2007 DOI Abstract: The lack of climatic imprint left by the Meltwater Pulse-1A (similar or equal to 14.5 ka BP), equivalent to a sea-level rise of 14 to 20 meters, is puzzling. Recent studies suggest the event might have occurred as a hyperpycnal flow in the Gulf of Mexico, preventing its detection in oceanic records throughout the North Atlantic. We present a suite of simulations with the LOVECLIM climate model, which mimic the effect of hyperpycnal flow under LGM conditions, in a first attempt to constrain its climatic effects. Analysing the ocean dynamics associated with the anomalous freshwater input, we show that the proposed mechanism is capable of sneaking a significant proportion of the MWP into the ocean (similar or equal to 6 meters equivalent sea-level rise using our model under LGM boundary conditions). We also demonstrate that, in our model, the meridional circulation is more se
