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Prof Michael E. Mann Profile picture
@MichaelEMann
Apr 1, 2023 • 3 tweets • 2 min read • Read on X
Polling by Yale/GMU shows no rise in climate dismissives in the general population. 🧵
But we do see a concerted ramp-up in inauthentic activity on twitter and social media intended to make you THINK there is a rise in climate denialism. My twitter feed has been littered with it in recent months. Here's an example from just a few minutes ago: ImageImage
Why would fossil fuel interests and the trollbot armies they fund want to make you think this? I discussed in The #NewClimateWar (publicaffairsbooks.com/titles/michael…): Image

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More from @MichaelEMann

Prof Michael E. Mann Profile picture
May 13
The resilient "scientists should never engage in advocacy" admonishment has once again reared its head in mainstream science discourse.

I've written on why such thinking is misguided and in fact dangerous on several occasions: 🧵
From "If You See Something, Say Something" (my 2014 @NYTimes op-ed):

"If scientists choose not to engage in the public debate, we leave a vacuum that will be filled by those whose agenda is one of short-term self-interest. There is a great cost to society if scientists fail to participate in the larger conversation — if we do not do all we can to ensure that the policy debate is informed by an honest assessment of the risks. In fact, it would be an abrogation of our responsibility to society if we remained quiet in the face of such a grave threat.
nytimes.com/2014/01/19/opi…
@nytimes "Reflections on Leo Szilard, The Fragility of Truth and the Role of the Scientist in the Public Sphere" | My acceptance speech for the 2022 @APSphysics Leo Szilard award: engage.aps.org/fps/resources/…
Image
Read 4 tweets
Prof Michael E. Mann Profile picture
Nov 13, 2023
The collapse of the great "ocean conveyor" is one of the more likely climate tipping points in the absence of concerted climate action: 🧵
We (@Rahmstorf et al) inferred this scenario eight years ago in this @NatureClimate study:
(see also Stefan's #RealCimate commentary: )
Key figure below. Even then, there was evidence that conveyor collapse might be underway: nature.com/articles/nclim…
realclimate.org/index.php/arch…
Image
@rahmstorf @NatureClimate I discussed the evidence that has since accumulated for potential ocean conveyor ("AMOC") collapse in this @PNASNews article a couple years ago: pnas.org/doi/10.1073/pn…
Image
Read 4 tweets
Prof Michael E. Mann Profile picture
Oct 25, 2023
Remember when climate deniers were claiming back in 2012 that global warming had paused and models were overestimating greenhouse warming?🧵 Image
That was based on cherry-picking starting & stopping dates, exploiting a decadal excursion of natural climate variability that led to a temporary slowdown of warming through 2012 or so (the observations are red, the average over models is black: ) realclimate.org/index.php/arch…
Image
When we look at the subsequent comparison through the present, we instead see that the models and observations agree well, including the provisional value for 2023 (green vertical bar at the end). Image
Read 4 tweets
Prof Michael E. Mann Profile picture
Oct 16, 2023
Interesting analysis and op-ed in the @NYTimes the other day from my friend & colleague Zeke @Hausfath which argues for an acceleration of recent surface warming:


I decided to try to reproduce it!
🧵 nytimes.com/2023/10/13/opi…
Image
I decided to use my favorite global surface temperature data set, @NASAGISS #GISTEMP: (provisional value for 2023 here ) data.giss.nasa.gov/gistemp/
columbia.edu/~mhs119/Temper…
Image
@NASAGISS I not only reproduced Zeke's result, but found an even bigger effect, with the trend from 2008-2023 a whopping 70% greater than the trend from 1970-2008
(the difference in trend is statistically significant at the p=0.01 i.e. 99% level) Image
Read 10 tweets
Prof Michael E. Mann Profile picture
Oct 15, 2023
Remarkable to me that some seemingly cannot hold these two entirely compatible facts in their minds at the same time: 1. The Hamas attack was a barbarous act of terrorism. 2. Disputes over resources (esp. water) have been a contributing factor behind all middle east conflict. 🧵
Instead, I get angry responses from some that reduce this nuanced point, made in my recent @TheHill op-ed (), to the childish caricature that I somehow claimed that water access was behind the Hamas attack.thehill.com/opinion/energy…
@thehill Obviously, I didn't say that. I said that the battle for water has always been an underlying factor in middle east conflict, including conflict between Israel & Palestine, and that climate change is amplifying that underlying stress. There is substantial scholarship behind that.
Read 5 tweets
Prof Michael E. Mann Profile picture
Aug 20, 2023
The missing link here is fossil fuels

to wit:
@jayrosen_nyu A couple billion dollars from Saudis was a great investment, if they were looking to suppress climate-forward messaging and promote climate denial/inaction propaganda on the world's leading social media platform
()aljazeera.com/news/2022/10/2…
Read 10 tweets

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