The 2008 K&T cartoon gives a NET upward radiation flux from the surface of 33w / m2 with a downward adjustment to
water vapour to 76w / m2 and conduction to 16w / m2 but the point
holds; that point is
more net heat is leaving the surface through methods other than radiation, particularly
water; that to me means 2 things;
water is a dominant mover of heat
compared to CO2 and the sun's 168/166 w / m2 is a far
more dominant heater than CO2 backradiation.