Looking back at one of HN39's
graphics on post stall recovery, I was reminded of an earlier debate over "super-cooled" water. The matter has not been cleared up by the BEA as their conclusions include:-
The precise composition of the cloud masses above 30,000 feet is little known, in particular with regard to the super-cooled water/ice crystal divide, especially with regard to the size of the latter.
The equatorial areas of the Atlantic and the western Pacific are the spawning grounds for sometimes large tropical revolving storms. The mechanisms associated with these maritime environments and their affect on the upper atmosphere is still not fully understood.