Michael E. Mann

Michael E. Mann

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Climate scientist; climate dynamics, policy

Bezos and Washington Post Threaten American Democracy
SocialApr 22, 2026

Bezos and Washington Post Threaten American Democracy

Jeff Bezos is a bad actor and the Washington Post is now a font of disinformation and propaganda and a threat to American Democracy

By Michael E. Mann
NOAA Defines El Niño Using Relative, Not Absolute, Nino Indices
SocialApr 21, 2026

NOAA Defines El Niño Using Relative, Not Absolute, Nino Indices

NOAA uses the *relative* Nino (or "RONI") indices, as shown below, to define El Nino state (>0.5C = El Nino; <-0.5C = La Nina, neutral otherwise). Some will try to confuse you by showing absolute Nino values (which depend on...

By Michael E. Mann
Climate Change's Reality Unveiled in Today's Interview
SocialApr 21, 2026

Climate Change's Reality Unveiled in Today's Interview

"This Is What Climate Change Looks Like Right Now" | My interview earlier today with the great @Thom_Hartmann: https://t.co/WIK6gYSzyK

By Michael E. Mann
Nino Indices Reveal Complex, Unsettled Climate State
SocialApr 20, 2026

Nino Indices Reveal Complex, Unsettled Climate State

Latest (TODAY) Nino indices posted by CPC. Neg (blue) is on La Nina side of neutral, pos (orange) on El Nino side. Pos/neg values <0.5 considered neutral. The 4 indices show wide spread indicating complexity of current state. We'll have...

By Michael E. Mann
Expert Sees Strong El Niño Signal Despite 25% NOAA Odds
SocialApr 20, 2026

Expert Sees Strong El Niño Signal Despite 25% NOAA Odds

NOAA CPC's latest (today) update is out (https://t.co/KrBrq60pvL). They estimate a 25% chance of a "very strong" El Nino. But "Mikeythe4th_WX" on twitter has a different view:

By Michael E. Mann
Debunking Weather Hype: Trust NOAA over Influencers
SocialApr 20, 2026

Debunking Weather Hype: Trust NOAA over Influencers

Posted this thread in response to the engagement-farming wannabe weather influencers insisting they know more than the NOAA Climate Prediction Center: https://t.co/dVNtX0kjFp https://t.co/8z7gOlhgUi

By Michael E. Mann
Neutral Now, 61% Chance El Niño Emerging Soon
SocialApr 20, 2026

Neutral Now, 61% Chance El Niño Emerging Soon

NOAA's latest update on state of El Niño, just 3 hours old. Summary: 1. We're in neutral conditions & will likely remain that way for several months. 2. Likely (61% chance) El Niño will emerge, but magnitude quite uncertain as we have not...

By Michael E. Mann
Actual NOAA Data Shows La Nina Weakening to Neutral
SocialApr 20, 2026

Actual NOAA Data Shows La Nina Weakening to Neutral

Wow the post below from @webberweather is shockingly dishonest. Lying to public helps nobody. Here's the ACTUAL (relative) Nino3.4 data from NOAA, which shows we've gone from strong La Nina 3 months ago to weakly negative (basically neutral) values now: https://t.co/1KQlch8trD https://t.co/UEb9Rcncua

By Michael E. Mann
Science Under Siege: Climate Crisis Discussion at 1 PM ET
SocialApr 20, 2026

Science Under Siege: Climate Crisis Discussion at 1 PM ET

Looking forward to speaking with my friend @Thom_Hartmann of the #ThomHartmannProgram today at 1pm ET. Topic--#ScienceUnderSiege & the escalating climate crisis. Please tune in: https://t.co/gndwJ3RDAM

By Michael E. Mann
Legendary Climate Scientist Dave Fenton Shares His Fight
SocialApr 20, 2026

Legendary Climate Scientist Dave Fenton Shares His Fight

"The Climate Scientist Who Fought Back" | My interview with the legendary @DFenton for the new #FentonForecast podcast: https://t.co/VDlK4k3KEM

By Michael E. Mann
Climate‑Driven Drought Fuels Migration and Conflict
SocialApr 18, 2026

Climate‑Driven Drought Fuels Migration and Conflict

"Drought, Migration and the Fall of Civilization: A Cautionary Tale" | Seemed appropriate to be re-upping this op-ed I wrote a few years ago for @thehill on the role of climate-driven conflict in the middle east: https://t.co/C8fyuYwyl6

By Michael E. Mann
Public Science Under Siege: From Frontier to Target
SocialApr 18, 2026

Public Science Under Siege: From Frontier to Target

"From Endless Frontier to Enemy of the People: The Assault on Public Science" | A very nice, thoughtful review of #ScienceUnderSiege (by @PeterHotez & yours truly) by Wendy Wagner for @Lawfare Media: https://t.co/2QcaDNC3df

By Michael E. Mann
Science and Innovation Chart Climate’s Future Path
SocialApr 14, 2026

Science and Innovation Chart Climate’s Future Path

“The Climate Path Forward: Science and Innovation” | My first panel at #CWA tomorrow 3:30pm Mountain Time (remote option available)

By Michael E. Mann
Critique: Normalizing Effects with Arbitrary Exponential Scaling
SocialApr 13, 2026

Critique: Normalizing Effects with Arbitrary Exponential Scaling

I’m sure Roger Pielke Jr can find some arbitrary exponentially increasing quantity to divide by and normalize away this effect

By Michael E. Mann