What Makes A Temperature Inversion?

Tools

By By Steve Pool

SEATTLE - This happens when you have warm air that sits on top of a pool of cold air.

Normally the temperature gets colder as you go higher in altitude. But on cold, calm nights, cold air will settle near the surface since cold air is heavier than warm air.

In the meantime, a lack of winds will prevent the air from mixing. The pattern also usually creates ground fog.

When the sun comes up, it will start to warm the air above the fog layer, creating an inversion -- it's actually warmer in higher altitudes than at the ground.

That helps further trap the cold air, and everything else in it, near the surface -- including pollutants. That's why air quality suffers during inversions and usually leads to burn bans.

Your Photos

YouNews {Light Me Up} {Light Me Up}
After spending the morning shooting pictures at other fields in the area, I was on my way home and noticed the unique colors in this field of flowers. I made a mental note as to its location so I could rendezvous back the following day.
YouNews Moon, Jupiter and Sun Moon, Jupiter and Sun
The weather was clear Thursday night for some images of the
Transit of Io across Jupiter. The images and Jupiter and the moon were taken with a Meade LX6(Schmidt-Cassegrain)at prime focus and a ZWO ASI120MC video camera.
YouNews Double Rainbow Lopez Island Double Rainbow Lopez Island
On Sunday, March 22nd, I took a photo with my iPad of a beautiful double Rainbow over Flat Point on Lopez Island. It cast a reflection in the water.