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It looks spurious. This NOAA publication from 2013 is the generally accepted picture for global temperature variation over the past 10,000 years and based on the best data available.It was generally believed the globe was slowly heading into a cooler period until the later 20th century when temperatures have spiked to the highest levels in the past 10,000 years. The highest temperature until recently was roughly 7000 years ago at about 0.4c above the mid 20c average (could by as high as 0.6 within the estimate).[URL unfurl="true"]https://www.climate.gov/news-features/climate-qa/what%E2%80%99s-hottest-earth-has-been-%E2%80%9Clately%E2%80%9D[/URL][ATTACH=full]115940[/ATTACH]The roman warm period seems to have been a localised European phenomenon and probably not a global phenomenon looking at this series the purple line would indicate the globe was warmer than average for the past 2000 years by about 0.5 c until the late 20century.The rise of 0.8c in 2013 was troubling because the predictions were for this to continue to rise. As of 2021 the average is ca 1c. The IPCC are now calling to limit the rise to 1.5c, that seems sensible give the current state of knowledge.
It looks spurious. This NOAA publication from 2013 is the generally accepted picture for global temperature variation over the past 10,000 years and based on the best data available.
It was generally believed the globe was slowly heading into a cooler period until the later 20th century when temperatures have spiked to the highest levels in the past 10,000 years. The highest temperature until recently was roughly 7000 years ago at about 0.4c above the mid 20c average (could by as high as 0.6 within the estimate).
[URL unfurl="true"]https://www.climate.gov/news-features/climate-qa/what%E2%80%99s-hottest-earth-has-been-%E2%80%9Clately%E2%80%9D[/URL]
[ATTACH=full]115940[/ATTACH]
The roman warm period seems to have been a localised European phenomenon and probably not a global phenomenon looking at this series the purple line would indicate the globe was warmer than average for the past 2000 years by about 0.5 c until the late 20century.
The rise of 0.8c in 2013 was troubling because the predictions were for this to continue to rise. As of 2021 the average is ca 1c. The IPCC are now calling to limit the rise to 1.5c, that seems sensible give the current state of knowledge.
