I'm not changing published altitudes as in cold weather, I'm merely calculating a temperature corrected path to cross the threshold at 50', and not reach the published MDH too high. and it is exactly what an RNAV BARO VNAV system will do for you on a NPA, if you care to have a look at the temperature correction of the PBN manual.
http://www.developpement-durable.gou...NSS__ENGv3.pdf