Airmann
Well one of the few things I learnt over the years was “never say never” and in response to your kind comment I’ll offer this by way of reply
Real world, very Northern Russia, winter, tropopause down at very sub FL200, cruising in the mid thirties…climb a couple of thousand feet and the OAT climbed 2 Celsius.
Niche circumstances yes, and I’d agree that most of the time in most other parts of the world climbing when above the tropopause did not lead to warming but I did enough of those very northern routes over 30 ish years to see warming on climb on a few occasions ….it’s not a “given” but in the interests of clarity it can on rare occasions get warmer as you get above the trop, even at airliner cruising levels.
Last edited by wiggy; 30th Jun 2021 at 10:00.