|Click to enlarge- Pictures by Larry Gurian|
As cold air settles during the night, the ground temperature may become lower than the surrounding air. In our deep valley, the flowing water of Bull Creek contributes to higher relative humidity. Barb reported an interesting example of this when walking our dogs this morning. I had walked them in the snow before the really hard freezing temperatures hit. My footprints compressed the snow into the warmer gravel, leaving ice in each print. When the air temperature dropped to -5 overnight, frost crystals formed in the icy footprints but nowhere else.
|Click to enlarge|
The magic of the moment was lost on our blind schnauzer Smokey who thought that the unfamiliar jacket was embarrassing, making him look like Snoopy in his Red Baron fantasies. Lifting each foot quickly to avoid the cold icy frost, he had a hard time remembering why he was out there and just why a bladder is important.
You can see Larry's complete set of frost pictures here, a good reminder to get outside, even when it is subzero. Now if I could just explain that to Smokey.