I am looking to simulate icing as a function of altitude, but I stumble across two small problems.
- Dewpoint has a fixed (harcoded to 0.002) lapse rate which means that relative humidity will at some point in a climb always get to 100% and remain there for the rest of the altitude profile. It so happens that in general around the tropopause, the air will largely dry out, and therefore that approximation could be completed for higher altitudes. Nothing that can´t be compensated with Nasal. Any cleaner option ?
- While reviewing the Simgear code to understand how the visual fogged out when entering a cloud I did not find a property in the tree that indicates that condition. This would be very convenient to simulate the icing hazard that clouds represent as far as icing is concerned. Did I miss something in the property tree that I could use ? I seem to remember a post that mentioned you could use visibility but the effective-visibility property does not seem to be influenced when crossing a cloud layer (which is pretty strange).
I haven´t looked very closely but, does anybody know if temperature inversion is simulated ?
Thank you in advance
Enrique