Originally Posted by
Outwest
Don't let anyone ever tell you you can't have fog (ice fog) at -40C I have iced up badly at -40C, ice fog rising off the open sea in the Canadian arctic
Very true.
Strong winds = open leads = ice fog. Often you will see a "Moon Dog" associated with these conditions.
I have picked up heavy clear at -45C in the Lougheed Island area in November/December/January.
I experienced the same icing conditions in the Beaufort Sea on 212/61/76's every winter I flew there (8 years).