I think they are going to find that solar variability - whatever the cause, orbital, sunspot, etc - affects wind patterns which affect ocean currents which affects heat transport to the Arctic. And that more than anything is driving the trigger point for glacial periods and it does appear to be temperature sensitive (i.e. salinity and density). Which is ~2C warmer than today. There's really no other explanation other than the reduction of heat to the arctic that can explain D-O events. And that means the ocean circulation patterns which can be affected by wind. Which is affected by solar radiation.An interesting article by Andy May was posted today about modeling the current warming with and without CO2's impact. Its outcome was as predicted, CO2's impact was lost in the noise.
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The article is a good read, and it is well sourced. I hope my alarmist friends will do the math and look at this for themselves.
Modeling HadCRUT5 with CO2 and without CO2 • Watts Up With That?
By Andy May I hate statistics, as many of you know. Some people think statistics and/or statistical models that meet standard statistical criteria are facts. The IPCC can be like that. They statistically model global surface temperatures with models of volcanic and anthropogenic forcing and...wattsupwiththat.com