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Respect fire, or else : >>Sometimes, that channel of upward-flowing air can collapse in one small spot. Then the hot air in the atmosphere plummets through the
by onetimemanytime 7y ago
Respect fire, or else :
>>Sometimes, that channel of upward-flowing air can collapse in one small spot. Then the hot air in the atmosphere plummets through the weak point. “You get a very fast wind moving down toward the ground, and when it hits the ground, it spreads like jelly slopping across the floor,” Williams said. “It can also send white-hot air out in front of the flame, incinerating the landscape before the actual flame has arrived. It can cause forests to spontaneously combust without coming into contact with a flame.”
When this upward-moving air pattern stays strong, it creates other kinds of problems. It can loft burning wood high into the atmosphere, carrying it many miles away from the center of the fire. When this debris finally lands, it can start new fires. In 2011, Williams lived dozens of miles from the edge of the blaze, yet he remembers semi-burned sticks falling like drizzle in his backyard. “These were twigs that you hold in your hand and say, ‘Wow, this actually weighs something. This made it 35 miles in the air,’” he said."
https://www.theatlantic.com/science/archive/2018/11/california-wildfire-why-humans-cant-control-them/575740/ https://www.theatlantic.com/science/archive/2018/11/californ...