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Smoke from Nearby Wildfires |
Credit & Copyright: Dr. Bruce G.
Marcot
Explanation: Summer of 2020 had been one of the worst on record for wildfires in the western United States. In the state of Oregon alone, by early November there have been 941 total wildfires covering 307,609 acres (124,488 ha), with 776 of them (82%) being human-caused and the rest lightening-caused. We can prevent most of these unnaturally-caused wildfires, especially the horrendously damaging ones now spreading faster and more frequently because of increased aridity from regional warming and climate change. These are not clouds in the photos; they are massive, dense plumes of wildfire smoke that rolled into the area, totally covering a completely blue and clear sky in a matter of 30 minutes or so. Local
areas were put on alert to evacuate at any time, as the fires continued to
spread.
The following figure is the official AQI, Air Quality
Index value
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