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I wonder if that has something to do with winds from the west and a large mountain range to the East to trap pollution.
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Has to do with inversion layering. Quoth DDG:
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Los Angeles Air Quality Index (AQI) and California Air ...
https://www.iqair.com/us/usa/california/los-angeles
This type of temperature inversion is called a marine inversion. The Los Angeles marine inversion can often be attributed to the layer of haze shrouding downtown buildings in pictures from the famous Hollywood sign. How to reduce air pollution in Los Angeles?
10: Weather. Inversion layers
10: Weather. Inversion layers
Inversion Layers . In a typical situation, the atmosphere (with regard to the troposphere) becomes cooler as elevation increases. An "inversion" occurs when a section of the atmosphere becomes warmer as the elevation increases. Inversion layers are a significant factor in the formation of smog in Los Angeles because they create stable atmospheric conditions.
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It's set way down in the hole.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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