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Prof Michael E. Mann Profile picture
@MichaelEMann
Apr 26 • 5 tweets • 5 min read Twitter logo Read on Twitter
From "It's the Anomalies, Stupid" (apologies to @GStephanopoulos) in "The Hockey Stick & the Climate Wars" (#HSCW amazon.com/Hockey-Stick-C…).

Time we start taking seriously the possibility that climate models are missing a La Nina (rather than El Nino)-like response to warming. ImageImage
Here's an article we published in @Nature back in 2003 that was suggestive of a La Nina-like response to warming (via paleoclimate evidence for an El Nino-like response to volcanic cooling): nature.com/articles/natur… Image
Here's some followup modeling work we did (Journal of Climatee, 2005) that reproduces the relationship seen in the proxy data: journals.ametsoc.org/view/journals/… Image
And here's further work we published in @science in 2009 validating the relationship in large-scale paleoclimate reconstructions: science.org/doi/10.1126/sc…
See also this #RealClimate commentary: realclimate.org/index.php/arch… ImageImage
I summarized the current state of research on this problem in this 2021 @PNASNews article "Beyond the hockey stick: Climate lessons from the Common Era" : pnas.org/doi/10.1073/pn…

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More from @MichaelEMann

Prof Michael E. Mann Profile picture
Apr 22
Twenty five years ago, on this #EarthDay, Apr 22 1998, the #HockeyStick reconstruction of temperatures was born (nature.com/articles/33859). Here's an interview I did on @CBSEveningNews with @johnrobertsFox (anchor @DanRather):
🧵
The Hockey Stick was extended to the past 1000 years in 1999 (agupubs.onlinelibrary.wiley.com/doi/10.1029/19…) and appeared in it's most recognizable form in the @IPCC_CH 3rd Assessment Report "Summary for Policymakers" (ipcc.ch/site/assets/up…) Image
Sorry #DenierBots, the original #HockeyStick was readily reproduced with publicly available data & methods description by other researchers:
link.springer.com/article/10.100… Image
Read 14 tweets
Prof Michael E. Mann Profile picture
Nov 14, 2022
So we sought to answer a few very specific questions in this survey.
🧵
1. Many proponents said it's unclear whether the public would respond negatively or positively to the protests. It's clear that it is the former, regardless of partisan affiliation, gender, etc.
2. Others said that public opinion was skewed by the fact that much media coverage suggested the paintings were damaged when in fact they weren't. Turns out it makes no difference.
Read 6 tweets
Prof Michael E. Mann Profile picture
Nov 14, 2022
"Public Disapproval of Disruptive Climate Change Protests" | Results of our new @APPCPenn/@PennCSSM survey, summary by Shawn Patterson Jr. (@stp_polisci ) & yours truly
🧵
web.sas.upenn.edu/pcssm/commenta…
A few highlights of the study:
⚡️A plurality of respondents (46%) say disruptive non-violent actions decrease their support for efforts to address climate change, while only 13% say that these actions increase their support.
⚡️69% of Republicans report that these non-violent, disruptive protests decrease their support for climate action, compared to only 27% among Democrats. It is noteworthy however that even Democrats are more likely to report a decrease (27%) than an increase (21%) in support.
Read 10 tweets
Prof Michael E. Mann Profile picture
Oct 24, 2022
I want to talk about art and climate...

My visit to the @MainLineArtCtr today to see their "Risky Beauty: Aesthetics & Climate Change" exhibit | Thanks to curator Dr. Cynthia Haveson Veloric for the one-on-one tour! 🧵
Art plays a critical role in communicating affectively, complementing the more cerebral approaches based on facts & figures. I loved the way this exhibit paired hope & urgency: ImageImage
The exhibit features the wonderful work of DIANE BURKO (@DianeBurko), STACY LEVY (@stacylevyart), DEIRDRE MURPHY, TIM PORTLOCK, AMIE POTSIC & HIRO SAKAGUCHI. The approaches range from abstract to photorealism. ImageImageImageImage
Read 4 tweets
Prof Michael E. Mann Profile picture
Apr 10, 2022
I am pleased to report that the manager of the hotel has gotten back to me and has informed me that this is NOT the policy of this @Marriott (i.e. to have a single, namely Fox, news channel on the TVs in the fitness facility as was the case yesterday). 🧵
He informed me that, contrary to what the presiding employee indicated yesterday, the channels CAN be changed in response to the requests of their guests (yesterday Fox was the only news channel; the rest were sports channels).
I take him at his word, and I am pleased to hear this. I So I do not hold this incident against either this Marriott hotel or the @Marriott chain, and neither should you.
Read 5 tweets
Prof Michael E. Mann Profile picture
Aug 9, 2021
A short thread on the just-published #IPCC #AR6 scientific working group (#WG1) report (ipcc.ch/working-group/…).

Three key takeaways IMHO: 🧵
1. The Hockey Stick grows longer, blade grows sharper. Recent warmth may be unprecedented in at least 100,000 years (see my @Time op-ed for further details: time.com/6088531/ipcc-c…)
#IPCC #AR6
2. Impacts of climate change are now "widespread and pervasive". Climate change is NOW causing amplified weather extremes of the sort we’ve been witnessing this summer — droughts, heat waves, wildfires, floods, superstorms. The IPCC unambiguously connects the dots this time:
Read 4 tweets

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