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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: Broken_Clock who wrote (1391435)2/15/2023 2:23:01 PM
From: Wharf Rat  Read Replies (1) | Respond to of 1584463
 
"go back a 1,000 years and let me know what you find."

No thermometers, no wind gauges, no annual rainfall totals, no fallen trees marked "I was uprooted by the great storm of 1066", possibly a few Vikings in North America, and about 280 ppm of atmospheric CO2. It's around 420 ppm now.



Atmospheric CO2 over the last 1000 years: A high-resolution record from the West Antarctic Ice Sheet (WAIS) Divide ice core - Ahn - 2012 - Global Biogeochemical Cycles - Wiley Online Library