Another data point that keeps popping up in climate science is the global atmospheric CO2 concentration, which currently is around 415 parts per million (ppm). The IPCC report that was published yesterday didn’t say anything new about the 450 ppm threshold and it remains to be seen if the upcoming deliverables from working groups II and III will have anything to say about it. Whether of not 450 ppm is the correct threshold number is, however, not the main point. The point is that there’s a clear link between global warming and atmospheric CO2 concentration.
Read MoreNo doubt that humans are responsible for global warming
Today an important new United Nations scientific report on climate change was published. It begins by concluding that there’s no doubt that human influence has warmed the atmosphere, ocean and land. Nobody is surprised, but it clears the air (pun intended) to have it stated in black and white by the U.N. The report, specifically the Working Group I contribution to the Sixth Assessment Report (AR6) of the Intergovernmental Panel on Climate Change (IPCC), highlights a number of other interesting, and unfortunately mostly alarming issues, too.
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