Alaa Al Khourdajie
@dralaaclimate.bsky.social
Research Fellow @ImperialCollege | Lead Author @IPCC AR7, @WCRP HIETPs & @UNEP GEO7 | WP4 Lead @DIAMOND | Guest Scholar @IIASA | Dad
#Climate #Energy #Scenarios
https://sites.google.com/site/akhourdajie/
#Climate #Energy #Scenarios
https://sites.google.com/site/akhourdajie/
Pinned
🚨New Paper🚨"Science-based targets miss the mark" with @andyreisinger.bsky.social, Annette Cowie, Oliver Geden @natureportfolio.bsky.social - Comm Earth & Env #OpenAccess
In this perspective, we challenge the equity & ambition claims of science-based targets 🧵
nature.com/articles/s43...
1/20
In this perspective, we challenge the equity & ambition claims of science-based targets 🧵
nature.com/articles/s43...
1/20
Reposted by Alaa Al Khourdajie
Spent Saturday night reviewing the final #COP30 Belém draft text. A friend joked it counts as “light reading.”
Unfortunately, it is very much a light read.
1/
Unfortunately, it is very much a light read.
1/
November 22, 2025 at 11:32 PM
Spent Saturday night reviewing the final #COP30 Belém draft text. A friend joked it counts as “light reading.”
Unfortunately, it is very much a light read.
1/
Unfortunately, it is very much a light read.
1/
Spent Saturday night reviewing the final #COP30 Belém draft text. A friend joked it counts as “light reading.”
Unfortunately, it is very much a light read.
1/
Unfortunately, it is very much a light read.
1/
November 22, 2025 at 11:32 PM
Spent Saturday night reviewing the final #COP30 Belém draft text. A friend joked it counts as “light reading.”
Unfortunately, it is very much a light read.
1/
Unfortunately, it is very much a light read.
1/
Reposted by Alaa Al Khourdajie
As the final text is being hammered out here in Belém for #COP30, the issue of fossil fuel phase-out is on the table again.
Looking at the actual numbers from the IPCC AR6 1.5°C assessed scenarios to decompose reduced fossil fuel output vs. carbon capture and storage - CCS (i.e. abatement)
1/3
Looking at the actual numbers from the IPCC AR6 1.5°C assessed scenarios to decompose reduced fossil fuel output vs. carbon capture and storage - CCS (i.e. abatement)
1/3
November 21, 2025 at 7:10 PM
As the final text is being hammered out here in Belém for #COP30, the issue of fossil fuel phase-out is on the table again.
Looking at the actual numbers from the IPCC AR6 1.5°C assessed scenarios to decompose reduced fossil fuel output vs. carbon capture and storage - CCS (i.e. abatement)
1/3
Looking at the actual numbers from the IPCC AR6 1.5°C assessed scenarios to decompose reduced fossil fuel output vs. carbon capture and storage - CCS (i.e. abatement)
1/3
As the final text is being hammered out here in Belém for #COP30, the issue of fossil fuel phase-out is on the table again.
Looking at the actual numbers from the IPCC AR6 1.5°C assessed scenarios to decompose reduced fossil fuel output vs. carbon capture and storage - CCS (i.e. abatement)
1/3
Looking at the actual numbers from the IPCC AR6 1.5°C assessed scenarios to decompose reduced fossil fuel output vs. carbon capture and storage - CCS (i.e. abatement)
1/3
November 21, 2025 at 7:10 PM
As the final text is being hammered out here in Belém for #COP30, the issue of fossil fuel phase-out is on the table again.
Looking at the actual numbers from the IPCC AR6 1.5°C assessed scenarios to decompose reduced fossil fuel output vs. carbon capture and storage - CCS (i.e. abatement)
1/3
Looking at the actual numbers from the IPCC AR6 1.5°C assessed scenarios to decompose reduced fossil fuel output vs. carbon capture and storage - CCS (i.e. abatement)
1/3
Reposted by Alaa Al Khourdajie
Overshoot: returning to 1.5°C requires net-negative emissions targets. @swp-berlin.org policy brief with Oliver Geden.
Keeping 1.5 alive will require reframing “net-zero” as transitional stage towards net-negative GHG emissions rather than an endpoint, and policy instruments able to deliver this.
Keeping 1.5 alive will require reframing “net-zero” as transitional stage towards net-negative GHG emissions rather than an endpoint, and policy instruments able to deliver this.
Overshoot: Returning to 1.5°C Requires Net-negative Emissions Targets
Global warming is set to rise above 1.5°C by the early 2030s. Returning to 1.5°C before the end of the 21st century would not prevent all harms...
www.swp-berlin.org
November 19, 2025 at 10:21 AM
Overshoot: returning to 1.5°C requires net-negative emissions targets. @swp-berlin.org policy brief with Oliver Geden.
Keeping 1.5 alive will require reframing “net-zero” as transitional stage towards net-negative GHG emissions rather than an endpoint, and policy instruments able to deliver this.
Keeping 1.5 alive will require reframing “net-zero” as transitional stage towards net-negative GHG emissions rather than an endpoint, and policy instruments able to deliver this.
Reposted by Alaa Al Khourdajie
To be Paris Agreement compatible, the label 'abated fossil fuels' needs to apply to Carbon Capture and Storage applications with net-zero greenhouse gas emissions on a lifecycle basis.
This requires four things...🧵
ow.ly/j0lz50XsO8a
#COP30
This requires four things...🧵
ow.ly/j0lz50XsO8a
#COP30
November 17, 2025 at 2:15 PM
To be Paris Agreement compatible, the label 'abated fossil fuels' needs to apply to Carbon Capture and Storage applications with net-zero greenhouse gas emissions on a lifecycle basis.
This requires four things...🧵
ow.ly/j0lz50XsO8a
#COP30
This requires four things...🧵
ow.ly/j0lz50XsO8a
#COP30
Join our #COP30 event
“CCUS Myth-Busting Live: Ask the Experts”
Date and time Monday 17 November, 10:00–11:30 am local time (1:00-2:30pm UK time)
Location: UK Pavilion, Blue Zone (A23)
YouTube live stream: www.youtube.com/live/SjaW3Ob...
“CCUS Myth-Busting Live: Ask the Experts”
Date and time Monday 17 November, 10:00–11:30 am local time (1:00-2:30pm UK time)
Location: UK Pavilion, Blue Zone (A23)
YouTube live stream: www.youtube.com/live/SjaW3Ob...
November 13, 2025 at 1:05 PM
Join our #COP30 event
“CCUS Myth-Busting Live: Ask the Experts”
Date and time Monday 17 November, 10:00–11:30 am local time (1:00-2:30pm UK time)
Location: UK Pavilion, Blue Zone (A23)
YouTube live stream: www.youtube.com/live/SjaW3Ob...
“CCUS Myth-Busting Live: Ask the Experts”
Date and time Monday 17 November, 10:00–11:30 am local time (1:00-2:30pm UK time)
Location: UK Pavilion, Blue Zone (A23)
YouTube live stream: www.youtube.com/live/SjaW3Ob...
Reposted by Alaa Al Khourdajie
Do climate conferences actually achieve anything? A lot of people have strong opinions, but we wanted measurements, so we look at how the stock market moves during yearly international meetings called COPs – explanation below, or read the paper here:
iopscience.iop.org/article/10.1...
iopscience.iop.org/article/10.1...
Radware Bot Manager Captcha
To ensure we keep this website safe, please can you confirm you are a human by ticking the box below.
iopscience.iop.org
November 6, 2025 at 12:41 PM
Do climate conferences actually achieve anything? A lot of people have strong opinions, but we wanted measurements, so we look at how the stock market moves during yearly international meetings called COPs – explanation below, or read the paper here:
iopscience.iop.org/article/10.1...
iopscience.iop.org/article/10.1...
Reposted by Alaa Al Khourdajie
📈COP delivers stock market boost for ‘green’ companies but renewables unaffected, Imperial College London study shows 🧵
Read it here: ow.ly/o6xY50XnEuH
Read it here: ow.ly/o6xY50XnEuH
November 6, 2025 at 11:01 AM
📈COP delivers stock market boost for ‘green’ companies but renewables unaffected, Imperial College London study shows 🧵
Read it here: ow.ly/o6xY50XnEuH
Read it here: ow.ly/o6xY50XnEuH
Reposted by Alaa Al Khourdajie
The FRIDA overview paper: gmd.copernicus.org/articles/18/...
A coupled human-Earth IAM, with integrated climate impacts.
A coupled human-Earth IAM, with integrated climate impacts.
An overview of FRIDA v2.1: a feedback-based, fully coupled, global integrated assessment model of climate and humans
Abstract. The current crop of models assessed by the Intergovernmental Panel on Climate Change (IPCC) to produce their assessment reports lack endogenous process-based representations of climate-drive...
gmd.copernicus.org
October 30, 2025 at 8:26 AM
The FRIDA overview paper: gmd.copernicus.org/articles/18/...
A coupled human-Earth IAM, with integrated climate impacts.
A coupled human-Earth IAM, with integrated climate impacts.
Reposted by Alaa Al Khourdajie
Really important paper led by my @iiasa.ac.at colleague Alex Nauels www.nature.com/articles/s41...
“The difference between decisive climate action today and continued high emissions is not just measured in degrees of warming but also in meters of sea-level rise” 👏👏👏
“The difference between decisive climate action today and continued high emissions is not just measured in degrees of warming but also in meters of sea-level rise” 👏👏👏
Multi-century global and regional sea-level rise commitments from cumulative greenhouse gas emissions in the coming decades - Nature Climate Change
It is important to understand how much long-term sea-level rise is already committed due to historical and near-term emissions. Here the authors use a modelling framework to show how decisions on glob...
www.nature.com
October 24, 2025 at 10:40 AM
Really important paper led by my @iiasa.ac.at colleague Alex Nauels www.nature.com/articles/s41...
“The difference between decisive climate action today and continued high emissions is not just measured in degrees of warming but also in meters of sea-level rise” 👏👏👏
“The difference between decisive climate action today and continued high emissions is not just measured in degrees of warming but also in meters of sea-level rise” 👏👏👏
Reposted by Alaa Al Khourdajie
Every ton of CO2 matters :
@climatenerilie.bsky.social quantifies the climatic impacts of one large fossil fuel project and its implications for further human heat exposure or coral reef loss, and how committed emissions challenge climate pledges
www.nature.com/articles/s44...
@climatenerilie.bsky.social quantifies the climatic impacts of one large fossil fuel project and its implications for further human heat exposure or coral reef loss, and how committed emissions challenge climate pledges
www.nature.com/articles/s44...
October 16, 2025 at 2:26 PM
Every ton of CO2 matters :
@climatenerilie.bsky.social quantifies the climatic impacts of one large fossil fuel project and its implications for further human heat exposure or coral reef loss, and how committed emissions challenge climate pledges
www.nature.com/articles/s44...
@climatenerilie.bsky.social quantifies the climatic impacts of one large fossil fuel project and its implications for further human heat exposure or coral reef loss, and how committed emissions challenge climate pledges
www.nature.com/articles/s44...
Reposted by Alaa Al Khourdajie
We finally have a new paper out looking at how summary statistics from the AR6 scenario database are highly dependent on the sampling of the database.
High profile statistics are often more representative of the model fingerprint, not the physics.
www.nature.com/articles/s41...
1/
High profile statistics are often more representative of the model fingerprint, not the physics.
www.nature.com/articles/s41...
1/
October 2, 2025 at 10:02 AM
We finally have a new paper out looking at how summary statistics from the AR6 scenario database are highly dependent on the sampling of the database.
High profile statistics are often more representative of the model fingerprint, not the physics.
www.nature.com/articles/s41...
1/
High profile statistics are often more representative of the model fingerprint, not the physics.
www.nature.com/articles/s41...
1/
Reposted by Alaa Al Khourdajie
There are a few people that are inspirations to almost all scientists that I know, and Jane Goodall was one of them. RIP. 😢
Jane Goodall, the celebrated primatologist and conservationist, has died
Jane Goodall, the conservationist renowned for her groundbreaking chimpanzee field research and globe-spanning environmental advocacy, has died. She was 91.
apnews.com
October 1, 2025 at 8:53 PM
There are a few people that are inspirations to almost all scientists that I know, and Jane Goodall was one of them. RIP. 😢
Reposted by Alaa Al Khourdajie
How can the #IPCC navigate generative AI?
What does it mean for scientific assessment more broadly?
New working paper looks at scenarios for AI adoption & resistance, w/ @dralaaclimate.bsky.social @shinasayama.bsky.social and Oliver Geden
Reflections welcome!
www.swp-berlin.org/publications...
What does it mean for scientific assessment more broadly?
New working paper looks at scenarios for AI adoption & resistance, w/ @dralaaclimate.bsky.social @shinasayama.bsky.social and Oliver Geden
Reflections welcome!
www.swp-berlin.org/publications...
www.swp-berlin.org
October 1, 2025 at 3:45 PM
How can the #IPCC navigate generative AI?
What does it mean for scientific assessment more broadly?
New working paper looks at scenarios for AI adoption & resistance, w/ @dralaaclimate.bsky.social @shinasayama.bsky.social and Oliver Geden
Reflections welcome!
www.swp-berlin.org/publications...
What does it mean for scientific assessment more broadly?
New working paper looks at scenarios for AI adoption & resistance, w/ @dralaaclimate.bsky.social @shinasayama.bsky.social and Oliver Geden
Reflections welcome!
www.swp-berlin.org/publications...
New working paper out: "Four scenarios for an @ipcc.bsky.social navigating Artificial Intelligence"
Led by @hollyjeanbuck.bsky.social, with @shinasayama.bsky.social and Oliver Geden
Thread 🧵
1/13
Led by @hollyjeanbuck.bsky.social, with @shinasayama.bsky.social and Oliver Geden
Thread 🧵
1/13
September 29, 2025 at 11:36 AM
New working paper out: "Four scenarios for an @ipcc.bsky.social navigating Artificial Intelligence"
Led by @hollyjeanbuck.bsky.social, with @shinasayama.bsky.social and Oliver Geden
Thread 🧵
1/13
Led by @hollyjeanbuck.bsky.social, with @shinasayama.bsky.social and Oliver Geden
Thread 🧵
1/13
Reposted by Alaa Al Khourdajie
Are you a highly motivated early-career researcher from a developing country or a country in transition, and want to be a Chapter Scientist in the next IPCC report?
Then here is your chance. Deadline 18 October 2025.
www.ictp.it/opportunity/...
Then here is your chance. Deadline 18 October 2025.
www.ictp.it/opportunity/...
IPCC AR7 Chapter Scientists | ICTP
The Intergovernmental Panel on Climate Change (IPCC) is in the process of preparing its Seventh Assessment report (AR7). The IPCC Working Groups are seeking highly motivated early-career researchers f...
www.ictp.it
September 26, 2025 at 6:37 AM
Are you a highly motivated early-career researcher from a developing country or a country in transition, and want to be a Chapter Scientist in the next IPCC report?
Then here is your chance. Deadline 18 October 2025.
www.ictp.it/opportunity/...
Then here is your chance. Deadline 18 October 2025.
www.ictp.it/opportunity/...
Reposted by Alaa Al Khourdajie
Registration for experts interested in serving as Expert Reviewers and providing scientific comments on the First Order Draft of the Special Report on Climate Change and Cities is now open!
Register here: apps.ipcc.ch/comments/src...
⚠️ Registration closes 30 Nov2025
🔗 www.ipcc.ch/2025/09/17/p...
Register here: apps.ipcc.ch/comments/src...
⚠️ Registration closes 30 Nov2025
🔗 www.ipcc.ch/2025/09/17/p...
September 19, 2025 at 3:05 PM
Registration for experts interested in serving as Expert Reviewers and providing scientific comments on the First Order Draft of the Special Report on Climate Change and Cities is now open!
Register here: apps.ipcc.ch/comments/src...
⚠️ Registration closes 30 Nov2025
🔗 www.ipcc.ch/2025/09/17/p...
Register here: apps.ipcc.ch/comments/src...
⚠️ Registration closes 30 Nov2025
🔗 www.ipcc.ch/2025/09/17/p...
Reposted by Alaa Al Khourdajie
📢 Experts on cities & climate change wanted!
The @ipcc.bsky.social report on #cities & #climatechange is looking for reviewers to review the first draft. This is your chance to shape global knowledge and action on cities and climate resilience!
Interested? 👉 www.tinyurl.com/srcities
#IPCC #SRCities
The @ipcc.bsky.social report on #cities & #climatechange is looking for reviewers to review the first draft. This is your chance to shape global knowledge and action on cities and climate resilience!
Interested? 👉 www.tinyurl.com/srcities
#IPCC #SRCities
📣 PRESS RELEASE
Registration for experts interested in serving as Expert Reviewers and providing scientific comments on the First Order Draft of the Special Report on Climate Change and Cities is now open!
Registration closes 30 Nov 2025.
Read more 🔗 www.ipcc.ch/2025/09/17/p...
Registration for experts interested in serving as Expert Reviewers and providing scientific comments on the First Order Draft of the Special Report on Climate Change and Cities is now open!
Registration closes 30 Nov 2025.
Read more 🔗 www.ipcc.ch/2025/09/17/p...
September 17, 2025 at 3:43 PM
📢 Experts on cities & climate change wanted!
The @ipcc.bsky.social report on #cities & #climatechange is looking for reviewers to review the first draft. This is your chance to shape global knowledge and action on cities and climate resilience!
Interested? 👉 www.tinyurl.com/srcities
#IPCC #SRCities
The @ipcc.bsky.social report on #cities & #climatechange is looking for reviewers to review the first draft. This is your chance to shape global knowledge and action on cities and climate resilience!
Interested? 👉 www.tinyurl.com/srcities
#IPCC #SRCities
Reposted by Alaa Al Khourdajie
The summer is over - and for about 16,600 people across 854 European cities that doesn't mean autumn comes, but death. People who would still be alive if it wasn't for our burning of fossil fuels. - New study with @lshtm.bsky.social www.imperial.ac.uk/grantham/pub...
September 17, 2025 at 10:09 AM
The summer is over - and for about 16,600 people across 854 European cities that doesn't mean autumn comes, but death. People who would still be alive if it wasn't for our burning of fossil fuels. - New study with @lshtm.bsky.social www.imperial.ac.uk/grantham/pub...
Reposted by Alaa Al Khourdajie
❓Climate reports for the IPCC and others have become increasingly complex, it’s also getting harder to capture & present relevant research to decision-makers.
@imperialcollegeldn.bsky.social's Dr @dralaaclimate.bsky.social's new paper explores how artificial intelligence could tackle this problem 🧵
@imperialcollegeldn.bsky.social's Dr @dralaaclimate.bsky.social's new paper explores how artificial intelligence could tackle this problem 🧵
The role of artificial intelligence in climate change scientific assessments
Climate change scientific assessments prepared by the Intergovernmental Panel on Climate Change (IPCC) face interconnected dual challenges: the exponential growth of literature, hindering synthesis…
ow.ly
September 16, 2025 at 12:02 PM
❓Climate reports for the IPCC and others have become increasingly complex, it’s also getting harder to capture & present relevant research to decision-makers.
@imperialcollegeldn.bsky.social's Dr @dralaaclimate.bsky.social's new paper explores how artificial intelligence could tackle this problem 🧵
@imperialcollegeldn.bsky.social's Dr @dralaaclimate.bsky.social's new paper explores how artificial intelligence could tackle this problem 🧵
Reposted by Alaa Al Khourdajie
Very nice essay/review from @dralaaclimate.bsky.social on AI in climate assessments! Thanks to open access and HTML I could read it on my phone on the train! 😀
I hope the big shots who AI everything these days read it too!
I hope the big shots who AI everything these days read it too!
🔬 New paper alert: "The role of artificial intelligence in climate change scientific assessments" @plosclimate.org
As #AI adoption accelerates, should @ipcc.bsky.social integrate these tools? Can LLMs (chatbots) communicate findings while maintaining scientific rigour?
doi.org/10.1371/jour...
1/9
As #AI adoption accelerates, should @ipcc.bsky.social integrate these tools? Can LLMs (chatbots) communicate findings while maintaining scientific rigour?
doi.org/10.1371/jour...
1/9
The role of artificial intelligence in climate change scientific assessments
Climate change scientific assessments prepared by the Intergovernmental Panel on Climate Change (IPCC) face interconnected dual challenges: the exponential growth of literature, hindering synthesis ef...
doi.org
September 15, 2025 at 5:40 PM
Very nice essay/review from @dralaaclimate.bsky.social on AI in climate assessments! Thanks to open access and HTML I could read it on my phone on the train! 😀
I hope the big shots who AI everything these days read it too!
I hope the big shots who AI everything these days read it too!
🔬 New paper alert: "The role of artificial intelligence in climate change scientific assessments" @plosclimate.org
As #AI adoption accelerates, should @ipcc.bsky.social integrate these tools? Can LLMs (chatbots) communicate findings while maintaining scientific rigour?
doi.org/10.1371/jour...
1/9
As #AI adoption accelerates, should @ipcc.bsky.social integrate these tools? Can LLMs (chatbots) communicate findings while maintaining scientific rigour?
doi.org/10.1371/jour...
1/9
The role of artificial intelligence in climate change scientific assessments
Climate change scientific assessments prepared by the Intergovernmental Panel on Climate Change (IPCC) face interconnected dual challenges: the exponential growth of literature, hindering synthesis ef...
doi.org
September 15, 2025 at 5:45 AM
🔬 New paper alert: "The role of artificial intelligence in climate change scientific assessments" @plosclimate.org
As #AI adoption accelerates, should @ipcc.bsky.social integrate these tools? Can LLMs (chatbots) communicate findings while maintaining scientific rigour?
doi.org/10.1371/jour...
1/9
As #AI adoption accelerates, should @ipcc.bsky.social integrate these tools? Can LLMs (chatbots) communicate findings while maintaining scientific rigour?
doi.org/10.1371/jour...
1/9
Reposted by Alaa Al Khourdajie
Interesting paper from @dralaaclimate.bsky.social on one aspect of how to use AI robustly in climate research, conscious of its limitations.
Just published in PLOS Climate: a new Essay by @dralaaclimate.bsky.social on the role of artificial intelligence in climate change scientific assessments 👇
journals.plos.org/climate/arti...
journals.plos.org/climate/arti...
The role of artificial intelligence in climate change scientific assessments
Climate change scientific assessments prepared by the Intergovernmental Panel on Climate Change (IPCC) face interconnected dual challenges: the exponential growth of literature, hindering synthesis ef...
journals.plos.org
September 14, 2025 at 4:04 PM
Interesting paper from @dralaaclimate.bsky.social on one aspect of how to use AI robustly in climate research, conscious of its limitations.
Reposted by Alaa Al Khourdajie
Dear @theguardian.com, we count on you for reasonably well informed lefty takes on global events. This wasn’t one. #CCUS may have a critical role to play in cement & chemicals and removing excess CO2. The picture you show is of a Norwegian #CCS plant that works. www.theguardian.com/news/2025/se...
Carbon capture – the get-out-of-jail-free card that does not actually work
Engineers have been trying to perfect the technology for years but the maximum effect it could manage is far short of what the planet needs
www.theguardian.com
September 12, 2025 at 2:49 PM
Dear @theguardian.com, we count on you for reasonably well informed lefty takes on global events. This wasn’t one. #CCUS may have a critical role to play in cement & chemicals and removing excess CO2. The picture you show is of a Norwegian #CCS plant that works. www.theguardian.com/news/2025/se...