As a result, the maintenance of global atmospheric temperature is dependent upon the heat released from the oceans approximately matching any deficit of heat lost by the whole atmosphere to space daily. (newclimatemodel.com)
But what percentage of global atmospheric temperature / ocean temperature change is due to natural factors and what to human activity? (skepticalscience.com)
««Of the rise in global atmospheric temperature over the past century, nearly 30 % occurred between 1910 and 1940 when anthropogenic forcings were relatively weak.» (realclimate.org)