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Andy Reisinger

@andyreisinger.bsky.social

8K followers 930 following 210 posts

Climate science and policy. Also the occasional photo and random thoughts. Currently serving as Commissioner at He Pou A Rangi, New Zealand Climate Change Commission; former IPCC vice-chair WGIII. Usual disclaimers...

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Environmental science 36%

Economics 29%

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Andy Reisinger @andyreisinger.bsky.social · Sep 12

What does the @IPCC_CH AR6 say about GHG emission metrics (GWP, GTP, GWP* etc)? This was covered in an in-session workshop at the June #SB58 subsidiary bodies meeting of the @UNFCCC. A nerdy thread on the findings from WGIII from a mitigation perspective🧵1/26 (re-post from twitter, sorry)

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Andy Reisinger @andyreisinger.bsky.social · 7d

Thanks, up look out for the podcast! If it's of interest, I recently gave a longer overview lecture on overshot for the Euro-Mediterranean Centre on Climate Change. youtu.be/TzkoJaLQ8ik

Lecture starts at 8.15 in that recording.

PowerPoint slide showing a graph with several scenarios of rising global warming above 1.5 degrees, and two scenarios where global warming exceeds 1.5 degrees for a few decades but then declines back to or below 1.5 degrees by 2100. Next to this are three 'burning embers' bars from the IPCC 6th Assessment Report that illustrate the increasing risk as global warming increases, for unique and threatened species, extreme weather events, and the distribution of impacts.

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Reposted by Joeri Rogelj, Andy Reisinger

IOPP Environment and Energy @iopp-environment.bsky.social · 11d

🌍New #ERL focus collection on #climate #overshoot is open!

Linked to @iiasa.ac.at Overshoots conference in Vienna this week. ERL Publisher Lauren Carter will be attending, email to discuss a contribution: [email protected]

📅Deadline: 30 April 2026
🔗 iopscience.iop.org/collections/...

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Reposted by Shannon Vallor, Ben H. Ansell, Joe R. Feagin , and 32 more Shannon Vallor, Ben H. Ansell, Joe R. Feagin, Brendan Nyhan, Tom Clark, Steve Peers, Tom Shakespeare, Victor Asal, Rosemary A. Joyce, Eric Goldman, Fabián Muniesa, Anders Nilsson, Cécile Canut, Laurent Pech, Lindsay M. Tedds, Alan Richardson, Robert Wolfe, Jacob T. Levy, Robert B. Reich, Aurélien Mondon, Alfie Kohn, Andy Reisinger, Pauline Stafford, Claire L. Adida, Henrik Skaug Sætra, Juanjo Medina, Gerardo Martí, Simon Lester, Prokla Redaktion, Olivier Mannoni, Olúfẹ́mi Táíwò, Nathan P. Kalmoe, Clark Gray, Dunlap, Southern Africa

404 Media @404media.co · 24d

The Department of Justice has removed a study showing that white supremacist and far-right violence “continues to outpace all other types of terrorism and domestic violent extremism” in the United States.

🔗 www.404media.co/doj-deletes-...

DOJ Deletes Study Showing Domestic Terrorists Are Most Often Right Wing

Following Charlie Kirk’s assassination and the Trump administration’s promise to go after the “radical left” a study showing most domestic terrosim is far-right was disappeared.

www.404media.co

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Andy Reisinger @andyreisinger.bsky.social · 25d

"We find no significant difference between the climate strategies of companies that purchased credits and those that did not. [...] Yet, we document that for large-scale offsetters in the airline industry, carbon credit purchases competed with financing internal decarbonisation measures."

The negligible role of carbon offsetting in corporate climate strategies - Nature Communications

This study of 89 multinational firms finds no significant link between voluntarily offsetting emissions and decarbonization speed. Firms spend little funds on carbon credits, and emission offsetting i...

www.nature.com

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Reposted by Andy Reisinger

Our Lady of Perpetual Disappointment @rkfatheree.bsky.social · 28d

If for no other reason than to counter the apparent argument that “bad people” deserve to be shot in cold blood. Why else misrepresent his life’s work?

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Reposted by Smith, Andy Reisinger, Nathan P. Kalmoe

Michael Hobbes @michaelhobbes.bsky.social · 28d

"Charlie Kirk gave me the courage to be more transphobic" is a wild thing to put in a both-sides hagiography
www.nytimes.com/2025/09/11/u...

‘He Gave Me Confidence’: How Charlie Kirk Connected With Young Men
With his right-wing group Turning Point USA, Mr. Kirk engaged controversial topics. Some students were inspired. Others found his views appalling.

As a Christian, he did not always feel he could say what he actually thought about the issue.

“It’s kind of scary to say what you believe in, especially in this cancel culture,” said Porter LaFeber, a 22-year-old studying sciences at Utah Valley University who was at an event on Wednesday where Mr. Kirk was killed. “Charlie Kirk seemed like he just went totally above that. He kind of gave a voice to the people that were maybe a little bit scared.”

“He gave me the confidence to be able to believe what I believe,” Mr. LaFeber added.

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Reposted by Andy Reisinger

Louise Hutt @saycheeselouise.bsky.social · 28d

Even if you don't vote for your council (pls do but), tick that box for the referendum.

It is BINDING for three terms - so if it fails, no Māori ward for nearly a decade.

And EVERYONE votes, not just Māori. Tāngata Tiriti step up, Pākehā mā, you need to vote.

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Reposted by Richard S.J. Tol, Andy Reisinger

Michael Clemens @mclem.org · 29d

The US Administration, champion of sovereignty, vows to punish Brazilians for enforcing Brazilian laws broken by a Brazilian citizen in Brazil.

Reuters @reuters.com · 29d

Rubio vows US response following conviction of Brazil's Bolsonaro reut.rs/4piCG0f

Rubio vows US response following conviction of Brazil's Bolsonaro

U.S. Secretary of State Marco Rubio on Thursday said the United States would "respond accordingly to this witch hunt" after former Brazilian President Jair Bolsonaro was convicted of plotting a coup to remain in power after losing the 2022 election.

reut.rs

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Andy Reisinger @andyreisinger.bsky.social · Sep 10

#climatechange #JobAlert the New Zealand Climate Change Commission, He Pou A Rangi, is looking for a Principal Analyst, Analytics and Economics. Closing 26 September.

Scope includes advice on NZ ETS settings, emissions reduction monitoring, and advice on emissions budgets and targets.

Climate Change Commission job - Principal Analyst – Analytics and Economics

centralagenciesjobs.cass.govt.nz

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Reposted by Peter Thorne

Andy Reisinger @andyreisinger.bsky.social · Sep 10

We'll cross global warming of 1.5°C in the next 5 years or so - what then?

I'll explore the challenges and choices we're facing with climate overshoot in a lecture on 18 September for the Centro Euro-Mediterranneo sui Cambiamenti Climatici

www.cmcc.it/lectures_con...

Advertisement for lecture "Overshoot: challenges and choices after we exceed 1.5°C", by Andy Reisinger, for the lecture series of the Centro Euro-Mediterraneo sui Cambiamenti Climatici (Euro-Mediterranean Centre for Climatic Changes)

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Reposted by Valerie M. Delmotte, Glen P. Peters, Peter Thorne , and 10 more Valerie M. Delmotte, Glen P. Peters, Peter Thorne, Ben Bond‐Lamberty, Wolfgang Crämer, Ed Hawkins, Alessandro Tagliabue, Roland Séférian, Paul Lehmann, Dominik Wiedenhofer, Daniel Huppmann, Andy Reisinger, Michael Westphal

Prof. Sonia I Seneviratne @soniaseneviratne.bsky.social · Sep 6

New starter pack with @ipcc.bsky.social #AR7 scientists (bureau, authors, REs)! Full list: apps.ipcc.ch/report/autho...
For SR cities scientists see separate starter pack!
@dianaurge.bsky.social @sherilee.bsky.social @siir-kilkis.bsky.social @janfuglestvedt.bsky.social
go.bsky.app/2FuXb3Y

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Andy Reisinger @andyreisinger.bsky.social · Sep 6

An in a simplistic interpretation, a company that has negative emissions is owed a reward (like people planting trees), whereas a company that has positive emissions has to pay a price for its emissions. Agree the problem is not GWP* as such, but misinterpretation what those numbers mean for policy.

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Andy Reisinger @andyreisinger.bsky.social · Sep 6

The issue is that in a simplistic interpretation of the numbers that GWP* provides, a factory that drops its historically high emissions will report negative emissions based on GWP*, whereas the same factory will still report positive emissions using GWP.

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Reposted by Ben Bond‐Lamberty, Andy Reisinger

Glen Peters @glenpeters.bsky.social · Sep 3

The DIAMOND project has made an important milestone: the first draft release of six open integrated assessment models (IAMs) that are emblematic in both scientific and policy processes. Now is the chance to contribute and provide feedback!
preview.mailerlite.com/y7x9l4x1r1

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Reposted by Andy Reisinger

Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · Sep 1

@margaretatwood.bsky.social is a goddamn national treasure.

A tweet by Margaret Atwood about how stupid Alberta politics are with specific wrath aimed at the Minister of Education

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Reposted by Andy Reisinger

Rob Ralston @policyrelevant.bsky.social · Aug 28

great reporting by @desmog.com on Saudi Aramco's strategy to 'future proof' its image, while continuing to massively expand fossil fuel and petrochemical production

Exclusive: Ad Giant IPG Accused of Breaking 'Industry First' Climate Policy With Work for World’s Biggest Oil Company

Firm’s top London consultants planned to help Saudi Aramco influence policymakers, leaked documents reveal.

www.desmog.com

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Andy Reisinger @andyreisinger.bsky.social · Aug 27

Ah, the pitfalls of commenting from afar... Thanks for letting me know!

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Reposted by Peter Thorne

Andy Reisinger @andyreisinger.bsky.social · Aug 27

It's outstanding that this clear presentation is part of Germany's public broadcaster's daily weather forecast. Long may the stamina last not only of @terliwetter.bsky.social (thank you!) but also those in charge of the @heuteshow.de that enable him to provide this essential public service.

Özden Terli @terliwetter.bsky.social · Aug 26

#Klimakatastrophe #globaleErhitzung

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Reposted by Andy Reisinger

David Ho @davidho.bsky.social · Aug 27

Trump is right that DC is besieged by criminals; they’re in the administration.

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Reposted by Peter Thorne, Cyrus Samimi

Özden Terli @terliwetter.bsky.social · Aug 26

#Klimakatastrophe #globaleErhitzung

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Reposted by Peter Thorne, Andy Reisinger, Gary Sheffield

Otto English @ottoenglish.bsky.social · Aug 15

What dastardly schemes will this evil council conjure up next in its mission to.... checks notes... stop people getting killed by bad drivers

Killer kerb' that wrecks
cars installed by pro-
pedestrian council
Furious motorists complain over 13-
inch high construction introduced
by Lib Dem-led local authority

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Andy Reisinger @andyreisinger.bsky.social · Aug 12

With a stark graphic: far from alleviating global hunger, animal-sourced food products produced by high and upper-middle income countries predominantly go to other wealthy countries, with less than 6% of total animal food production by those countries reaching low and lower-middle income countries.

A Sankey diagram showing the types and destinations of animal sourced foods produced by high and upper-middle income countries. 70.94% go to high income countries, another 23.32% go to upper-middle income countries, 4.93% go to lower-middle income countries, and 0.81% go to low income countries (all percentages based on trade value). Over 47% reside in low and lower-middle income countries.

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Andy Reisinger @andyreisinger.bsky.social · Aug 12

National temperature neutrality, agricultural methane and climate policy: reinforcing inequality in the global food system

iopscience.iop.org/article/10.1...

👀⛈️ #nzpol (it's about Ireland though)

Screenshot of the scientific journal page containing the paper: "National temperature neutrality, agricultural methane and climate policy: reinforcing inequality in the global food system" by Colm Duffy*, Carl Doedens, Róisín Moriarty, Hannah Daly, David Styles and Malte Meinshausen, published in Environmental Research Letters, volume 20, Number 9

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Reposted by Glen P. Peters, Robbie M. Andrew, Stephen D. Murphy , and 2 more Glen P. Peters, Robbie M. Andrew, Stephen D. Murphy, Kevin O’Sullivan, Andy Reisinger

Róisín Moriarty @roisinmoriarty.com · Aug 12

🧵THREAD on agri-methane and ‘no additional warming’

Why is it so important to reduce methane (CH4) emissions from agriculture in the near term?

What happens when countries like #Ireland use ‘no additional warming’ to set climate targets?

PAPER: iopscience.iop.org/article/10.1...

(1/18)

Screen grab of paper title, published in Environmental Research Letters, 12 August 2025. Title reads: National temperature neutrality, agricultural methane emissions and climate policy: reinforcing inequality in the global food system. Duffy et al 2025.

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Reposted by Anne Applebaum, Joanna Bryson, Dennis Raphael , and 7 more Anne Applebaum, Joanna Bryson, Dennis Raphael, Euan G. Ritchie, Fatih Guvenen, Els Torreele, Jason Lyall, Andy Reisinger, Nicaragua, Monisha Bajaj

Al Jazeera English @aljazeera.com · Aug 10

Four Al Jazeera staff, including reporter Anas Al Sharif, were killed in an Israeli attack on a tent for journalists outside the main gate of Gaza's al-Shifa hospital aje.io/onll19

Anas al-Sharif among five Al Jazeera journalists killed by Israel in Gaza

Al Jazeera staff killed in targeted Israeli attack on a tent housing journalists near al-Shifa Hospital, Gaza City.

aje.io

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Reposted by Andy Reisinger

Hypoautonomic, BS @hypoautonomic.bsky.social · Aug 10

Maybe if they stopped pretending everyone is too stupid to read the IUCN report they hide behind they wouldn't have to cry and complain about the criticism they receive?

founder of colossalbio Ben Lamm posts a meme that states that the IUCN definition of de-extinction is "the process of creating an organism that resembles an extinct species"

2016 IUCN report: The term "de-extinction" is misleading in its implication that extinct species, species for which no viable members remain, can be resurrected in their genetic behavioural and physiological entirety.
https://portals.iucn.org/library/sites/library/files/documents/Rep-2016-009.pdf

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Reposted by Andy Reisinger

Jacob Aron @jjaron.bsky.social · Aug 10

Very intriguing! Colossal has previously denied any involvement in similar articles www.newscientist.com/article/2490...

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Reposted by Andy Reisinger

Andrew Dessler @andrewdessler.com · Jul 30

Yeah, I really thought that we passed this level of denier BS. Apparently not.

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Reposted by Peter Thorne, Anthony Ricciardi, Andy Reisinger , and 1 more Peter Thorne, Anthony Ricciardi, Andy Reisinger, Jonathan J. Buonocore

Andrew Dessler @andrewdessler.com · Jul 30

I've been getting a lot of requests for comments on the DOE report "A critical review of the impact of U.S. greenhouse gas emissions on the U.S. climate". Here are some initial thoughts. More will come later.

This DOE report is best understood through the lens of a well-known saying: “process is product.” In other words, the final document reflects the process that created it — including, most importantly, who was selected to write it. The authors of this report are widely recognized contrarians who don’t represent the mainstream scientific consensus. If almost any other group of scientists had been chosen, the report would have been dramatically different. The only way to get this report was to pick these authors.
The report they produced should be thought of as a law brief from attorneys defending their client, carbon dioxide. Their goal is not to weigh the evidence fairly but to build the strongest possible case for CO2’s innocence. This is a fundamental departure from the norms of science.
A lawyer is expected to represent their client zealously and selectively, presenting only the information that strengthens their case and leaving it to the opposing counsel to present the other side. In fact, a lawyer who stood up in court and gave equal weight to both sides of a case would be considered professionally negligent, possibly even disbarred.
In science, the standard is the opposite. Scientists are obligated to engage with the full range of evidence, especially that which might contradict their hypotheses. Ignoring contrary data is not just bad practice, in some cases it can rise to the level of scientific misconduct.
Scientific credibility depends on a willingness to base conclusions on all of the evidence. When scientists cherry-pick data or misrepresent the balance of evidence, they are violating a core principle of the discipline.
In this report, the authors are firmly in lawyer mode. They sift through data to find the few examples that support their narrative while systematically ignoring the much larger body of evidence that contradicts it.
In conclusion, this report does not appear to be a fair assessment of the state of climate science.

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Reposted by Andy Reisinger

Dr Sanjana Hattotuwa @sanjanah.bsky.social · Jul 29

The InternetNZ AGM falls on Thursday. It's a very consequential one. To secure institution's ability to serve all New Zealanders, members must vote down proposed changes to InternetNZ's constitution by the Free Speech Union (FSU) - published on their website. If passed, InternetNZ won't be the same.

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