3 New Studies Show Warming And Drought Were As Severe Before 1900 With CO2 Under 300 PPM
by Kenneth Richard Jan 14, 2025
Studies from Central China, Russia, and Central Europe indicate there was just as much (or more) warming and drought before 1900, or when CO2 concentrations were under 300 ppm. [emphasis, links added]
A new 1606 to 2016 Central China winter (minimum) temperature reconstruction (Jiang et al., 2024) reveals cold periods only occurred in nine years of the 1600s (1663-1672), but there were 71 years of cold periods during the 20th century (1900-1942, 1959-1979, 1985-1994).
Notably, CO2 hovered around 278 ppm during the 1600s and 1700s, but it rose from 290 ppm to 370 ppm during the 1900s.
From 1650-1750, the winter temperatures in Central China were 0.44°C warmer than they were during the 20th century.
https://climatechangedispatch.com/3-new-studies-show-warming-and-drought-were-as-severe-before-1900-with-co2-under-300-ppm/
