A midwinter flight from Chicago to Tokyo, closely following the Great Circle route through subarctic to Arctic lands of North America, offered the chance for some interesting high-latitude viewing before sunset. Here, sunset already was occurring beneath the later of altocumulus translucidus undulatus clouds, reddening both their own undersides and some fuzzy, semi-opaque stratus areas beneath. That light, in turn, filtered upward through the yellower tops of the deck, in an uncommonly seen and appreciated effect.
over northern MB, Canada (16 Jan 25) Looking WNW