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ktxhopem3276 t1_ja98rph wrote

In Pittsburgh, the wind usually blows west to east with a slight northern tilt. This is called the westerlies and only applies to certain latitudes. The us steel pollution is more likely to blow north up the mon valley and blast squirrel hill with the the odor of the steamy fart instead of blowing east up over the river valley and over Jefferson hills into bethel park,

https://www.weather.gov/source/zhu/ZHU_Training_Page/winds/Wx_Terms/Flight_Environment.htm

https://en.m.wikipedia.org/wiki/Atmospheric_circulation

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WikiSummarizerBot t1_ja98tj4 wrote

Atmospheric circulation

>Atmospheric circulation is the large-scale movement of air and together with ocean circulation is the means by which thermal energy is redistributed on the surface of the Earth. The Earth's atmospheric circulation varies from year to year, but the large-scale structure of its circulation remains fairly constant. The smaller scale weather systems – mid-latitude depressions, or tropical convective cells – occur chaotically, and long-range weather predictions of those cannot be made beyond ten days in practice, or a month in theory (see chaos theory and the butterfly effect).

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