Check the screenshots below.The temperature doesn't match the indication in ASA.At the moment of the screenshots, my Concorde drop from FL510 to FL470, the temperature remained same at -50C. I post a similar topic before here http://forums1.avsim.net/index.php?showtopic=263895I did a lot of test flight after the post. When I fly to PHNL and TAPB, where the Concorde is definitely in Stratosphere, I can still have a decrease of reading.I'd like to know how the temperature being modeled in ASA. In stratosphere the temp should increase with altitude, I assume the reason is because the heat sources is sun not ground, but why in the night and winter time, I still have such a high reading of temperature(same as summer time).Also, the Stratosphere's altitude begins around FL560 near the polar area(correct me if I were wrong), that means, in the North Atlantic, where Concorde usually fly, it shouldn't encounter a noticeable rasing of temperature, since at the bottom of stratosphere, the temperature should acted stable.RegardsYufeng

Hi,The real world is not 100% modeled in FS so we can't always compare what should happen in the real world to what happens in FSX. The layers of the atmosphere and the physics/weather that happens are not going to be the same. We get the data as high as we can and then make some GENERAL extrapolations above that. Different levels of each layer, their behaviors during day and night, and your location, are beyond what FS can model. We took what we developed in ASv6.5 and applied it in ASA.Your -50 is very close to the -52 to -56 that ASA is showing taking into account that you are 91 miles away from the reporting station.Thanks,