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A lot of climate research is based entirely on experimenting with these climate models. We have a lot of data measured at many points on Earth spanning many de

A lot of climate research is based entirely on experimenting with these climate models. We have a lot of data measured at many points on Earth spanning many decades. The data clearly shows that our planet is warming up and that there is a strong correlation with greenhouse gasses. One can extrapolate from these data points with certain reliability. What is hard is to take into account are tipping points (which is why the IPCC excludes them in their projections), such as the effects of methane release from warming tundra soil. As far as I understand, most known possible tipping points only make things worse, not better. At this point the question is not if climate change is happening (there is near universal agreement on that among climatologists), but whether it will be bad, but manageable, it will be ugly, or life-threatening to mankind. In any of these cases, we have to act now.

chrisco255 7y ago
We have data that shows warming in the early 20th century, cooling in the mid 20th century (through the 70s) and warming in the decades after that. CO2 ppm was increasing steadily through those ups and downs, so it's not correlated perfectly. Meanwhile there are natural phenomenon like the Atlantic Multi-decadal Oscillation, the Pacific Decadal Oscillation, ENSO, NAO, etc that also correlate quite well with climate change. In the terms of "bad, unmanageable" climate change, I would invite you to research the early Holocene, which had temps as much as 7 degrees hotter than modern temps. The early Holocene began about 12K years ago and ended about 6K years ago. The warm temperatures correlate with boom times for humanity. See: Early Holocene Temperature Oscillations Exceed Amplitude of Observed and Projected Warming in Svalbard Lakes https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL084384 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/201...

chrisco255 7y ago

We have data that shows warming in the early 20th century, cooling in the mid 20th century (through the 70s) and warming in the decades after that. CO2 ppm was increasing steadily through those ups and downs, so it's not correlated perfectly. Meanwhile there are natural phenomenon like the Atlantic Multi-decadal Oscillation, the Pacific Decadal Oscillation, ENSO, NAO, etc that also correlate quite well with climate change. In the terms of "bad, unmanageable" climate change, I would invite you to research the early Holocene, which had temps as much as 7 degrees hotter than modern temps. The early Holocene began about 12K years ago and ended about 6K years ago. The warm temperatures correlate with boom times for humanity. See: Early Holocene Temperature Oscillations Exceed Amplitude of Observed and Projected Warming in Svalbard Lakes https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL084384 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/201...