Cloud effect on Temperature limited to 3 hour window

As below but now liminted to a 3 hour window around midday. Note expanded Cloud cover scale (uneven)

Here's one with same RH and Months as previous example (diff scale)

The effect seems to be modified by the RH. At a high humidity the clouds have a more negative effect whilst a low humidity - maximum is cooled while minimum is heated.

All data and excel sheets available on request!

The Effect of Humidity on Back Radiation

Continuing the same theme Here is the effect of changing Humidity (both relative and absolute) on the percentage of backradiation compared to upward radiation

Difficult finding a conversion between relative humidity (as measured) and absolute humidity.

the equation used for the above plot was:

abs humidity=1320.65/(273+T)*rh/100*10^(7.4475*(T+273-273.14)/(T+273-39.44))



So It looks as if the effects of cloud cover / temperature should only be made at fixed RH.

Yet more sums to do!