Why oceans matter for climate and for the economy
Oceans as the planet’s dominant climate regulatorThe global ocean spans about 71% of Earth’s surface and functions as the planet’s chief climate moderator, absorbing and redistributing heat and carbon to soften temperature fluctuations, shape weather systems, and maintain essential life-supporting biogeochemical processes. Two key functions are especially notable.Heat storage: The ocean has absorbed most of the surplus heat generated by greenhouse gas emissions—widely assessed as exceeding 90% of the planet’s accumulated excess warmth—thereby tempering atmospheric temperature rises while introducing long-lasting thermal inertia that commits the climate system to future shifts.Carbon sink: The ocean takes in a substantial share of CO2…
