A question for CAM5-SOLIN (monthly mean)

[hanj@pku_edu_cn]

Hi,I want to know how the model calculates SOLIN (monthly mean) in CAM5.Does it consider the duration of sunshine changes day by day when calculated?Such as, at a given month, SOLIN = (S1*Day1+S2*Day2+...+S30*Day30)/(Day1+Day2+...+Day30), right?(S denotes solar insolation in a day, Day denotes the duration of sunshine in the same day)Looking forward to your reply.Thanks.
 

 

[hannay]

The model compute on the solar incoming radiation at very grid point at every radiation timestep (6-hour). On the timestep scale, some grid points will recieve not incoming solar. The incoming radiation is averaged over the month.