Radiation Transfer Calculations and Assessment of Global Warming by CO₂

Table 8

Compilation of some figures at clear sky, global mean cloud cover, and total cloudiness.

Quantity/parameter	Symbol	Unit	Value
cloud cover		%	0	66	100
surface temperature		°C	20.3	16.0	13.8
climate sensitivity		°C	1.79	1.09	0.89
CO2 radiative forcing		W/m^2	5.46	3.77	2.96
Planck sensit. this model		W^−1 m^2°C	0.33	0.29	0.30
Planck feedb. this model		W/m^2/°C	−3.05	−3.47	−3.31
Planck feedback, AR5		W/m^2/°C	−3.20