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re: 'Megadrought' emerging in the western US might be worse than any in the last 1,200 years
Posted on 4/19/20 at 8:28 am to Bench McElroy
Posted on 4/19/20 at 8:28 am to Bench McElroy
quote:
A severe drought that has engulfed the American Southwest since the year 2000 is likely to soon be the most severe drought since the 800s, according to a new study published in Science.
How do they know this? We have zero recorded weather history In America of that time period.
2
Posted on 4/19/20 at 8:41 am to bakersman
quote:
How do they know this? We have zero recorded weather history In America of that time period.
It’s based on the tree rings from trees in the areas according to the article. Weather from years past can be determined by the size of the tree rings. Tree rings usually grow wider in warm, wet years and they are thinner in years when it is cold and dry. I’m assuming tree rings from the past few years are the thinnest they’ve been in a very long time.
Posted on 4/19/20 at 11:41 am to bakersman
Sheer fiction
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