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- Mar 3, 2006
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JoinedMar 3, 2006Messages5,450Reaction score1,770Points315NOAAding said:
CO2 doesn't drive climate change. CO2 has never driven climate change. Solar variability and orbital forcings coupled with albedo of the northern hemisphere have driven all climate fluctuations and environmental uncertainty over the last 3 million years because the planet is uniquely configured for bipolar glaciation and the planet's temperature is at the threshhold for extensive northern hemisphere glaciation.
Mid-Holocene Warm Period – About 6,000 Years Ago
""Mid-Holocene Warm Period – About 6,000 Years Ago Paleoclimatologists have long suspected that the "middle Holocene," a period roughly from 7,000 to 5,000 years ago, was warmer than the present day. Terms like the Altithermal or Hypsithermal or Climatic Optimum have all been used to refer to this warm period that marked the middle of the current interglacial period.
Today, however, we know that these terms are obsolete and that the truth of the Holocene is more complicated than originally believed. What is most remarkable about the mid-Holocene is that we now have a good understanding of both the global patterns of temperature change during that period and what caused them.
It appears clear that changes in Earth's orbit have operated slowly over thousands and millions of years to change the amount of solar radiation reaching each latitudinal band of Earth during each month. These Orbital changes can be easily calculated and predict that the Northern Hemisphere Should have been warmer than today during the mid-Holocene in the summer and colder in the winter. The combination of warmer summers and colder winters is apparent for some regions in the proxy records and model simulations. There are some important exceptions to this pattern, however, including colder summers in the monsoon regions of Africa and Asia due to stronger monsoons with associated increased cloud cover during the mid-Holocene, and warmer winters at high latitudes due to reduction of winter sea ice cover caused by more summer melting.
In summary, the mid-Holocene, roughly 6,000 years ago, was generally warmer than today during summer in the Northern Hemisphere.
In some locations, this could be true for winter as well.
Moreover, we clearly know the cause of this Natural warming, and we know without doubt that this proven "astronomical" climate forcing mechanism CANNOT be responsible for the warming over the last 100 years.
https://www.ncei.noaa.gov/sites/default/files/2021-11/12 Mid-Holocene Warm Period & Penultimate Interglacial Period & Early Eocene Period -FINAL OCT 2021.pdf
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YAWN repeats from TROLLs Ding and SunsetTommy who know they're wrong.
I've Already shredded MANY Times previous.
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