3 ms·
The temp has definitely changed faster than this before and the hundred years people are worried about wouldn’t even show up in geological historic records. Fo
by akvadrako 8y ago
The temp has definitely changed faster than this before and the hundred years people are worried about wouldn’t even show up in geological historic records.
For a recent example look up the younger dryas on Wikipedia. It seems like the average global temp moved about 5 degrees over a few decades.
- ben_w 8y ago“””The Younger Dryas … was a return to glacial conditions which temporarily reversed the gradual climatic warming after the Last Glacial Maximum started receding””” Closest I can get to supporting your client is that the local temperature of Greenland went up a lot at the end of that period. Not global. And given the article talks a lot about global thermohaline circulation, extreme local variation is not surprising.
- akvadrako 8y agoIt is a bit of an educated guess because we can’t know the global average, but most of the local temps that are estimated moved in the same direction. The ones in Greenland were larger than most though.
- ben_w 8y agoWikipedia — which you chose to suggest as a source — Does not at first glance provide citations for other locations. Can you please do so?
- akvadrako 8y agoSure, the text of this reference at least agrees with my claim of a general trend: https://www.ncdc.noaa.gov/abrupt-climate-change/The%20Younger%20Dryas https://www.ncdc.noaa.gov/abrupt-climate-change/The%20Younge...
- ben_w 8y agoThanks. I can’t follow the link from there to (Brauer et al. 2008) as that link is paywalled. The Greenland graph is essentially vertical, but the Cariaco graph looks like it’s relatively spread out as well as being much smaller magnitude — though even then, the delta is double the current estimated maximum sustainable excess over pre-industrial temperatures.