UAH just measured April to be the warmest month in the lower troposphere in their record, which begins in Dec 1978: 1.05°C relative to Jan 1991-Dec 2020:
The linear trend of their entire dataset is now 0.15°C/decade, making their total warming 0.68°C. That's far below RSS's measurement of lower troposphere temperature change for the same period, which is 0.22°C/decade for a total warming of 0.99°C.
8 comments:
Shows what I know! In September, I had said: "My guess is that in Feb we should see a return to the mean."
BTW, you mentioned that The linear trend of their entire dataset is now 0.15°C/decade. Over just the last two decades, the slope has been 0.26°C/decade. For the last 10 years it's 0.30°C/decade.
But UAH 6 is borked. It would be interesting to see what 5.6 would have given.
Yes, their warming is accelerating. By my calculations, the acceleration in their data is 0.045 C/dec^2. Every decade their warming has been increasing by 0.045 C, on average. Not sure if that correlates with your calculations. I'm just doing a dumb quadratic fit. I don't know anything more to do.
0.045 C/dec^2 seems like a lot.
"BTW, you mentioned that The linear trend of their entire dataset is now 0.15°C/decade. Over just the last two decades, the slope has been 0.26°C/decade. For the last 10 years it's 0.30°C/decade.
But UAH 6 is borked. It would be interesting to see what 5.6 would have given."
Yes, I agree with you, it's borked.
John Christy has already retired, I believe, and Roy Spencer is on the cusp of it. It seems they're trying to train someone, William Basher or some such name(?). But they refuse to share their computer code, probably because it is a spaghetti-like mess. Deniers will continue to cite them because they have the least warming (by coincidence, I'm sure). But not sure how much longer than can stay relevant, if they even are relevant today. Roy only publishes science through his blog, no longer journals.
It's still not clear to me what version 6 was meant to 'fix' from their earlier version. I'm not aware that they've ever identified version 5.6 as 'broken' in some way.
The fact that the new product deviated so wildly from their previous version, and every other reconstruction, should have given them pause.
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