WeatherBlog 16 2021/22 | High pressure in a continuous loop

Air pollution in the inversion

As is usual in such weather conditions, a tough inversion has formed, trapping all particulate matter under a lid, so to speak. If you are also sitting under this lid, you can see the poor air quality from the visibility, which is now quite low for the sunny weather. From above, you can see the brown haze in the valley even more clearly. Over the next few days, the foehn could provide some relief, at least in places, provided it is strong enough and makes it through the inversion cover into the valley. Precipitation would also "wash" the dirt out of the air - this is an option in the south at most. The further spring progresses, the stronger the sun is known to become. At some point, it will manage to warm the ground so much during the day that mixing occurs, i.e. warm air rises from the ground. In this way, the air can also be "exchanged" and particulate pollution reduced. Of course, the most elegant way to change air masses is with a large-scale change in the weather - but maybe the weather will change at some point before it really becomes summer...