CIAM Flyer (01-2013) - Flying in an Unbelievably Blue Winter Sky

For many years, model airplanes have been flown in wintertime on the frozen lake in Davos in the Swiss alps. The conditions may be a bit special but are not nearly as nasty as aeromodellers in warmer hemispheres may think.

Thermals when flying in Winter?

"These are less likely in midwinter – but ridge and wave soaring from the bottom of the valley are possible," says a local model pilot, "but the stable weather conditions bring high-altitude winds in which we can sometimes – keeping a safe distance from the mountain – fly to very high altitudes with lift continuously increasing with altitude".

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