A Grander Canyon
Last Friday, a rare and beautiful thing happened in Arizona’s Grand Canyon. It filled with fog. We’re used to seeing clouds above the Grand Canyon…
…not IN it. This cottony ocean was caused by a meteorological phenomenon called a temperature inversion.
A temperature inversion is when the normally warm layer of air near the Earth’s surface, normally heated by convection currents from the sun-baked land beneath it, is replaced by a colder air mass. This can happen when a warm front flows over the top of a cooler one, often in winter months.
Although the desert air in Arizona is pretty arid, as the cool atmosphere poured into the canyon, what little water there was condensed into clouds, flowing like waterfalls and filling the mighty canyon with a billowing ocean.
(images via Grand Canyon National Park on Facebook)