What are Contrail Shadows?
Contrail shadows form when the long thin artificial clouds formed behind aircraft cast a shadow on a lower, or occasionally higher, layer of cloud. Contrails,…
Tag: water vapour
The Meaning of Summer Mists
This morning, I stepped out into a dense mist and it was a glorious omen; I paused to check my pack for sun cream before…
What are Lens Clouds? (Altocumulus lenticularis)
Lens clouds are saucer, lens or lentil-shaped clouds that form when wind blows moist air over mountains. Their formal name is Altocumulus lenticularis (lenticula means…
Why is visibility so good in the mountains?
Many visitors to cold mountains are struck by the amazing visibility. The visibility is so good that it can trick the brain into thinking things…