Response of the Intertropical Convergence Zone to Antarctic Ice Sheet Melt

摘要: Past cooling events in the Northern Hemisphere have been shown to impact location of intertropical convergence zone (ITCZ) and therewith induce a southward shift tropical precipitation. Here we use high resolution coupled ocean-atmosphere simulations show that reasonable past melt rates Antarctic Ice Sheet can similarly led shifts ITCZ, albeit opposite direction, through large-scale surface air temperature changes over Southern Ocean. Through sensitivity experiments employing slightly negative large positive meltwater fluxes, deduce meridional Hadley cell ITCZ are, first order, linear response high-latitude rates. This highlights possibility episodes anomalous better constrain possible future low latitude precipitation continued global warming shrinking Sheet.