Monday, December 26, 2011


Interesting inversion on the Monday afternoon sounding from Fairbanks, with four distinct layers evident in the lowest 1000 meters. The inversion right off the surface is not particularly steep (by Fairbanks standard), followed by a nearly isothermal layer between 200 and 400 meters AGL and a shallower isothermal layer between 400 and 550 meters AGL and finally a warming layer above that. Some of this stratification is wind driven, with winds here at Keystone Ridge gradually increasing during the day.


  1. It's funny that the weather forecast for the following days include temps like -39. How do they know that it's exactly -39 and not possibly -40, or warmer like -38. What is the standard deviation here lol.

  2. Well, you have to put down some number! In the pre-digital age, things like "mid 30s" were common. Digital age, only numbers will do.