QFF and QNH met Question
Hi All,
I understand the differences in QFF and QNH in tems of defining the differences with varitions in Height and Temp. Also understand these can be quite significantly different Hot high etc. What I am unclear on is why do I need to worry about this as I'm not going to set my Alt QFF for an IFR departure using a met chart and looking at the isobars?..I set QNH given by ATC.
Also why do the Met boys use QFF (ie Isothermal Temp) to give a better weather forcast than using a ISA corrected measure such as QNH. Surely this is more accurate !
Sorry If I am being a bit thick but I don't see the answer in the manuals or searching google forums etc.
Appreciate some help so I can fully understand it.
Cheers Fastair !