Mean annual surface temperature for early Earth. Calculated at a relative solar constant S/S0 = 0.80, and as a function of cloud fraction and ocean fraction. The amount of warming from greenhouse gases in these calculations is equivalent to the warming at the maximum concentrations of atmospheric CO2 and CH4 described by Rosing et al. (2010).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.