inversion

inversion

Weather Word of the Week: Inversion

4h ago
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We all know what inverted means - upside down or reverse. But when there's an inversion in the atmosphere, does that mean the whole atmosphere flips upside down? Let's run through it for this week's weather word. I'm meteorologist Jason Meyers, and an inversion in the atmosphere is an increase in temperature with height. Normally, air cools down as it travels up - think of how cold it is on top of a snow-covered mountain compared to its base. An inversion occurs when warmer air is trapping cooler air at the surface. It's usually associated with high pressure systems, and they're also more common in the mornings before the sun can heat things up. When an inversion is in place, it does a couple of things. It can prevent thunderstorms from forming by preventing convection. It also traps pollutants like dust, dirt, and pollen in the lower levels of the atmosphere, because air at the surface can't rise up and mix with the air higher up. Sometimes, when we get a number of these days in a row, Ozone action days are issued, and it can be unhealthy to go outside. However, it's considered healthy to leave comments below. Let me know what word you'd like to learn about next. You can also tweet me or send me a message on the Storm Shield Facebook page. Thanks for watching! See you next week! #WWOTW Find Storm Shield elsewhere on the internet: http://www.stormshieldapp.com http://www.facebook.com/stormshieldapp http://twitter.com/StormShieldApp Download the Storm Shield App: iPhone: http://bit.ly/stormshieldapp-ios Android: http://bit.ly/stormshieldapp-android