|Total / opaque cloud vs Temperature|
No slope on the opaque cloud but a definite dip when teperatures are between 16 and 22C
The following plots limit RH to 20 to 40%. Day refers to time that cloud can be measured Night to when cloud is not measured.
|D/U LWIR vs Temperature (night values - 0-100% cloud)|
Both upward and downward LWIR linear proportional to temperature
|D/U LWIR vs Temperature (day values cloud 0-100%)|
Very similar to night - slopes are a bit different.
|D/U LWIR vs Temperature (day values but limiting cloud to 20 to 40%) (note change in humidity limits|
|D/U LWIR vs Opaque Cloud cover temp 22-24C RH 35-40%|
Temperature RH are constrained to minimise these effects. The DLWIR increases by approx 80 w/sqm
I think these last two plots conclusively prove relative humidity and cloud cover have a positive effect on the downward long wave ir (ir increases if cloud and/or RH increase)
Now how do you do this for CO2?
Data available from: