Tropical Indian Ocean Warming Contributes to Arctic Warming

Abstract Currently, the Arctic is undergoing a significant warming, which has exerted widespread impacts on global climate. Although many mechanisms responsible for warming have been proposed, of multi‐decadal change tropical sea surface temperature receive little attention. Here we use numerical experiments to elucidate that Indian Ocean (IO) may contribute warming. Through enhancing Atlantic Meridional Overturning Circulation, IO remotely induces more ocean heat transport from North Arctic. The resulted upper dominates in Additionally, despite net negative contribution atmospheric transport, warm air conveyed into Kara Seas, Eurasia, and America sectors, contributing local results propose new mechanism interpret indicate important remote