Andy Reisinger
@andyreisinger.bsky.social
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...
Pinned
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)
The sad thing is, I remember sketching changes in temperature and heavy precip distributions in exactly this way in the early 2000s, just to now watch it play out.
The animation very much reminds me of an angry beast pulling on its chains; and they are tearing loose...
The animation very much reminds me of an angry beast pulling on its chains; and they are tearing loose...
Exactly! Which makes the real climate shift way scarier. Like shown by the data from svs.gsfc.nasa.gov/5452/
November 8, 2025 at 7:49 AM
The sad thing is, I remember sketching changes in temperature and heavy precip distributions in exactly this way in the early 2000s, just to now watch it play out.
The animation very much reminds me of an angry beast pulling on its chains; and they are tearing loose...
The animation very much reminds me of an angry beast pulling on its chains; and they are tearing loose...
Reposted by Andy Reisinger
Quite a headline.
Europeans recognize Zohran Mamdani’s supposedly radical policies as ‘normal’
Critics of New York City’s mayor-elect have said his pledges of free bus service and universal childcare are unrealistic, but in Europe it’s a given
www.theguardian.com
November 7, 2025 at 2:49 PM
Quite a headline.
AI hallucinates because it’s trained to fake answers it doesn’t know. Teaching chatbots to say “I don’t know” could curb hallucinations. It could also break AI’s business model.
AI hallucinates because it’s trained to fake answers it doesn’t know
Teaching chatbots to say “I don’t know” could curb hallucinations. It could also break AI’s business model
www.science.org
November 7, 2025 at 12:31 AM
AI hallucinates because it’s trained to fake answers it doesn’t know. Teaching chatbots to say “I don’t know” could curb hallucinations. It could also break AI’s business model.
Reposted by Andy Reisinger
After intensive negotiations at #IPCC63, the #IPCC achieved consensus on the outline of its Methodology Report
However, yet again the Panel was unable to agree on a workplan for the seventh assessment cycle
Read ➡️ enb.iisd.org/intergovernm...
#climate #climatechange #AR7
However, yet again the Panel was unable to agree on a workplan for the seventh assessment cycle
Read ➡️ enb.iisd.org/intergovernm...
#climate #climatechange #AR7
Highlights and images for 30 October 2025
enb.iisd.org
October 31, 2025 at 3:47 AM
After intensive negotiations at #IPCC63, the #IPCC achieved consensus on the outline of its Methodology Report
However, yet again the Panel was unable to agree on a workplan for the seventh assessment cycle
Read ➡️ enb.iisd.org/intergovernm...
#climate #climatechange #AR7
However, yet again the Panel was unable to agree on a workplan for the seventh assessment cycle
Read ➡️ enb.iisd.org/intergovernm...
#climate #climatechange #AR7
Chimpanzees rationally revise their beliefs. Would be interesting to do a double blind experiment with humans.
Chimpanzees rationally revise their beliefs
The selective revision of beliefs in light of new evidence has been considered one of the hallmarks of human-level rationality. However, tests of this ability in other species are lacking. We examined...
www.science.org
October 30, 2025 at 10:22 PM
Chimpanzees rationally revise their beliefs. Would be interesting to do a double blind experiment with humans.
Global methane action pays for itself at least six times over
And for fans of GHG metrics: "[...] Lastly, although the best basis for comparing methane and CO2 abatement should be relative social costs, we have found that the convention of using GWP100 is a reasonable approximation."
And for fans of GHG metrics: "[...] Lastly, although the best basis for comparing methane and CO2 abatement should be relative social costs, we have found that the convention of using GWP100 is a reasonable approximation."
Global methane action pays for itself at least six times over
We provide a comprehensive assessment of the economic benefits and costs of global methane emissions abatement, anchored on the Global Methane Pledge. We use an integrated assessment model to estimate...
www.science.org
October 30, 2025 at 10:20 PM
Global methane action pays for itself at least six times over
And for fans of GHG metrics: "[...] Lastly, although the best basis for comparing methane and CO2 abatement should be relative social costs, we have found that the convention of using GWP100 is a reasonable approximation."
And for fans of GHG metrics: "[...] Lastly, although the best basis for comparing methane and CO2 abatement should be relative social costs, we have found that the convention of using GWP100 is a reasonable approximation."
Current rate of sea level rise is 4.7mm/year (average over past 10 years), more than twice the 20th century average rise.
Half a metre by 2100 best estimate if Paris Agreement long-term temperature goal is met - much more if not.
Half a metre by 2100 best estimate if Paris Agreement long-term temperature goal is met - much more if not.
Future Sea-level Rise Is Certain, but the Amount and Speed Are Uncertain
The WMO co-sponsored World Climate Research Programme (WCRP)1 is at the forefront of sea-level change research. At the request of WMO Members and other United Nations entities, WCRP has developed a st...
wmo.int
October 30, 2025 at 10:04 PM
Current rate of sea level rise is 4.7mm/year (average over past 10 years), more than twice the 20th century average rise.
Half a metre by 2100 best estimate if Paris Agreement long-term temperature goal is met - much more if not.
Half a metre by 2100 best estimate if Paris Agreement long-term temperature goal is met - much more if not.
Reposted by Andy Reisinger
Trump admin: Neoliberalism has failed. We must defend American workers by imposing much higher burdens on international trade
International Maritime Organization: You will love our new fee scheme to encourage net-zero global shipping, then
Trump: NOT LIKE THAT heatmap.news/climate-tech...
International Maritime Organization: You will love our new fee scheme to encourage net-zero global shipping, then
Trump: NOT LIKE THAT heatmap.news/climate-tech...
Trump Just Torpedoed Investors’ Big Bets on Decarbonizing Shipping
The delayed vote on a net-zero standard for the International Maritime Organization throws some of the industry’s grandest plans into chaos.
heatmap.news
October 17, 2025 at 8:11 PM
Trump admin: Neoliberalism has failed. We must defend American workers by imposing much higher burdens on international trade
International Maritime Organization: You will love our new fee scheme to encourage net-zero global shipping, then
Trump: NOT LIKE THAT heatmap.news/climate-tech...
International Maritime Organization: You will love our new fee scheme to encourage net-zero global shipping, then
Trump: NOT LIKE THAT heatmap.news/climate-tech...
Reposted by Andy Reisinger
If things were going to plan stuff like this simply wouldn't exist. The goal here is the elimination of fossil fuels, not "lots of batteries" or "lots of solar panels"
October 15, 2025 at 7:15 AM
If things were going to plan stuff like this simply wouldn't exist. The goal here is the elimination of fossil fuels, not "lots of batteries" or "lots of solar panels"
Reposted by Andy Reisinger
The US Academic Alliance for the IPCC (USAA-IPCC) and @agu.org will host webinar TOMORROW at 1pm EST on how to be an expert reviewer for @ipcc.bsky.social reports. Please register & learn how to improve science policy assessments like upcoming Special Report on #ClimateChange and Cities!
October 14, 2025 at 4:28 PM
The US Academic Alliance for the IPCC (USAA-IPCC) and @agu.org will host webinar TOMORROW at 1pm EST on how to be an expert reviewer for @ipcc.bsky.social reports. Please register & learn how to improve science policy assessments like upcoming Special Report on #ClimateChange and Cities!
Reposted by Andy Reisinger
Happy to reshare our new Annual Review paper, which explores what it really means to exceed and return to 1.5 °C.
For many in the Global South, overshoot isn’t a temporary “phase” but an existential condition.
This piece asks what it means for justice, recovery & resilience in a world above 1.5 °C
For many in the Global South, overshoot isn’t a temporary “phase” but an existential condition.
This piece asks what it means for justice, recovery & resilience in a world above 1.5 °C
📣 2025 volume of the Annual Review of Environment and Science is online! Most read article is "Overshoot: A Conceptual Review of Exceeding and Returning to Global Warming of 1.5°C" arevie.ws/3IF0OKf @andyreisinger.bsky.social @janfuglestvedt.bsky.social @chrisd-jones.bsky.social
October 11, 2025 at 9:07 AM
Happy to reshare our new Annual Review paper, which explores what it really means to exceed and return to 1.5 °C.
For many in the Global South, overshoot isn’t a temporary “phase” but an existential condition.
This piece asks what it means for justice, recovery & resilience in a world above 1.5 °C
For many in the Global South, overshoot isn’t a temporary “phase” but an existential condition.
This piece asks what it means for justice, recovery & resilience in a world above 1.5 °C
Reposted by Andy Reisinger
📣 2025 volume of the Annual Review of Environment and Science is online! Most read article is "Overshoot: A Conceptual Review of Exceeding and Returning to Global Warming of 1.5°C" arevie.ws/3IF0OKf @andyreisinger.bsky.social @janfuglestvedt.bsky.social @chrisd-jones.bsky.social
October 10, 2025 at 10:09 PM
📣 2025 volume of the Annual Review of Environment and Science is online! Most read article is "Overshoot: A Conceptual Review of Exceeding and Returning to Global Warming of 1.5°C" arevie.ws/3IF0OKf @andyreisinger.bsky.social @janfuglestvedt.bsky.social @chrisd-jones.bsky.social
Reposted by Andy Reisinger
🌍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: Lauren.Carter@ioppublishing.org
📅Deadline: 30 April 2026
🔗 iopscience.iop.org/collections/...
Linked to @iiasa.ac.at Overshoots conference in Vienna this week. ERL Publisher Lauren Carter will be attending, email to discuss a contribution: Lauren.Carter@ioppublishing.org
📅Deadline: 30 April 2026
🔗 iopscience.iop.org/collections/...
September 29, 2025 at 1:32 PM
🌍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: Lauren.Carter@ioppublishing.org
📅Deadline: 30 April 2026
🔗 iopscience.iop.org/collections/...
Linked to @iiasa.ac.at Overshoots conference in Vienna this week. ERL Publisher Lauren Carter will be attending, email to discuss a contribution: Lauren.Carter@ioppublishing.org
📅Deadline: 30 April 2026
🔗 iopscience.iop.org/collections/...
Reposted by Andy Reisinger
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-...
🔗 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
September 16, 2025 at 4:40 PM
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-...
🔗 www.404media.co/doj-deletes-...
"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
September 15, 2025 at 8:52 PM
"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."
Reposted by Andy Reisinger
Exactly, political violence isn't bad because the victims are good people, it's bad because it's bad!
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?
September 12, 2025 at 9:30 AM
Exactly, political violence isn't bad because the victims are good people, it's bad because it's bad!
Reposted by Andy Reisinger
"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...
www.nytimes.com/2025/09/11/u...
September 12, 2025 at 9:21 AM
"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...
www.nytimes.com/2025/09/11/u...
Reposted by Andy Reisinger
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.
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.
September 12, 2025 at 6:43 AM
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.
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.
Reposted by Andy Reisinger
The US Administration, champion of sovereignty, vows to punish Brazilians for enforcing Brazilian laws broken by a Brazilian citizen in Brazil.
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
September 11, 2025 at 10:44 PM
The US Administration, champion of sovereignty, vows to punish Brazilians for enforcing Brazilian laws broken by a Brazilian citizen in Brazil.
#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.
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
September 10, 2025 at 9:10 PM
#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.
Scope includes advice on NZ ETS settings, emissions reduction monitoring, and advice on emissions budgets and targets.
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...
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...
September 10, 2025 at 8:27 AM
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...
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...
Reposted by Andy Reisinger
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
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
September 6, 2025 at 2:37 PM
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
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
Reposted by Andy Reisinger
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
preview.mailerlite.com/y7x9l4x1r1
September 3, 2025 at 7:03 AM
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
preview.mailerlite.com/y7x9l4x1r1
Reposted by Andy Reisinger
danielle smith, one of david seymour’s buddies and current leader of Alberta, just banned ‘The Handmaid’s Tale’ in Alberta schools, and this is the reply from Atwood.
#nzpol
#nzpol
@margaretatwood.bsky.social is a goddamn national treasure.
September 1, 2025 at 11:32 AM
danielle smith, one of david seymour’s buddies and current leader of Alberta, just banned ‘The Handmaid’s Tale’ in Alberta schools, and this is the reply from Atwood.
#nzpol
#nzpol