HOW STRONG IS THE HARVARDTON BEAR CONSTRAINT ?

Reference
Broecker, W.S., J. Lynch-Stieglitz, D. Archer, M. Hofmann, E. Maier-Reimer, O. Marchal, T. Stocker, and N. Gruber, How strong is the Harvardton-Bear constraint ? Global Biogeochemical Cycles, 13, 817-820, 1999.

Abstract
A comparison of the sensitivity of a wide spectrum of models to the influence of the ocean's cold water outcrops on the partial pressure of CO2 in the warm surface ocean and atmosphere has been conducted. The finding is that, while in simple box models the cold ocean dominates, in 3-D OGCM's this influence is far less, suggesting that exchange processes between the warm and cold regime in the real ocean are extremely important in determining the distribution of chemical properties.