Dr Tom Harris
@drtomharris.bsky.social
UK based Climate Science Writer & Advocate writing on Substack under Climate Uncovered.
Soon to be retired Management Consultant specialising in Government funded R&D.
Soon to be retired Management Consultant specialising in Government funded R&D.
It's in the caption of the graph
November 9, 2025 at 9:51 AM
It's in the caption of the graph
How possible is it to rescue 1.5ºC? A new report timed for the start of COP30 from Climate Analytics and PIK sets out a revision of the IPCC AR6 1.5ºC scenario which they call Highest Possible Ambition.
#climatechange #netzero #emissions #scenarios
#climatechange #netzero #emissions #scenarios
November 8, 2025 at 4:28 PM
How possible is it to rescue 1.5ºC? A new report timed for the start of COP30 from Climate Analytics and PIK sets out a revision of the IPCC AR6 1.5ºC scenario which they call Highest Possible Ambition.
#climatechange #netzero #emissions #scenarios
#climatechange #netzero #emissions #scenarios
This one covers water losses which will have an impact on agriculture:
www.science.org/doi/10.1126/...
This one food spikes:
iopscience.iop.org/article/10.1...
And this graphic of the UK in 50 odd years might be useful
www.science.org/doi/10.1126/...
This one food spikes:
iopscience.iop.org/article/10.1...
And this graphic of the UK in 50 odd years might be useful
November 8, 2025 at 3:44 PM
This one covers water losses which will have an impact on agriculture:
www.science.org/doi/10.1126/...
This one food spikes:
iopscience.iop.org/article/10.1...
And this graphic of the UK in 50 odd years might be useful
www.science.org/doi/10.1126/...
This one food spikes:
iopscience.iop.org/article/10.1...
And this graphic of the UK in 50 odd years might be useful
Whilst its easy to get used to scary graphs, this one made me pause! The 2025 State of the Cryosphere report published yesterday has this one overlaying observations of #AMOC slowdown against model predictions.
The report states that “AMOC shutdown appears all but inevitable”
The report states that “AMOC shutdown appears all but inevitable”
November 7, 2025 at 9:28 AM
Whilst its easy to get used to scary graphs, this one made me pause! The 2025 State of the Cryosphere report published yesterday has this one overlaying observations of #AMOC slowdown against model predictions.
The report states that “AMOC shutdown appears all but inevitable”
The report states that “AMOC shutdown appears all but inevitable”
If you ever thought science was too tame a career, how does kite skiing 4,000km across Antarctica over 3 months sound?
#antarctica #adventure #expedition #science #climatechange
#antarctica #adventure #expedition #science #climatechange
November 2, 2025 at 10:14 AM
If you ever thought science was too tame a career, how does kite skiing 4,000km across Antarctica over 3 months sound?
#antarctica #adventure #expedition #science #climatechange
#antarctica #adventure #expedition #science #climatechange
Whilst a lot of what Bill Gates wrote in his memo makes a certain amount of sense, his main point that short term emissions reduction is not the priority is based on flawed and out of date data.
I’ve scribbled on his graph below to add a very important line - reality.
#climatechange #acceleration
I’ve scribbled on his graph below to add a very important line - reality.
#climatechange #acceleration
October 30, 2025 at 9:37 AM
Whilst a lot of what Bill Gates wrote in his memo makes a certain amount of sense, his main point that short term emissions reduction is not the priority is based on flawed and out of date data.
I’ve scribbled on his graph below to add a very important line - reality.
#climatechange #acceleration
I’ve scribbled on his graph below to add a very important line - reality.
#climatechange #acceleration
The construction industry’s carbon emissions are set to double by 2050, emitting enough CO2 to breach 2ºC by 2040 on their own, unless major changes are instigated.
October 28, 2025 at 11:45 AM
The construction industry’s carbon emissions are set to double by 2050, emitting enough CO2 to breach 2ºC by 2040 on their own, unless major changes are instigated.
Last month a paper on the limited availability of safe geological storage for CO2 got a lot of attention. A common comment was that it only looked at sedimentary rock, not basalt. A new study from Ireland provides an example of the basalt opportunity that exists alongside sedimentary storage.
October 16, 2025 at 12:40 PM
Last month a paper on the limited availability of safe geological storage for CO2 got a lot of attention. A common comment was that it only looked at sedimentary rock, not basalt. A new study from Ireland provides an example of the basalt opportunity that exists alongside sedimentary storage.
The 2025 Global Tipping Points Report published this week has dire news: Warm-water coral reefs, on which nearly a billion people and a quarter of all marine life depend, are passing their tipping point.
Report: global-tipping-points.org
#climatechange #tippingpoint #coralreef #Amazon #rainforest
Report: global-tipping-points.org
#climatechange #tippingpoint #coralreef #Amazon #rainforest
October 13, 2025 at 11:08 AM
The 2025 Global Tipping Points Report published this week has dire news: Warm-water coral reefs, on which nearly a billion people and a quarter of all marine life depend, are passing their tipping point.
Report: global-tipping-points.org
#climatechange #tippingpoint #coralreef #Amazon #rainforest
Report: global-tipping-points.org
#climatechange #tippingpoint #coralreef #Amazon #rainforest
“More than three-quarters of the Earth’s support systems are not in the safe zone. Humanity is pushing beyond the limits of a safe operating space, increasing the risk of destabilising the planet”, says PIK Director Johan Rockström.
All of these seven boundaries show worsening trends.
All of these seven boundaries show worsening trends.
September 25, 2025 at 1:03 PM
“More than three-quarters of the Earth’s support systems are not in the safe zone. Humanity is pushing beyond the limits of a safe operating space, increasing the risk of destabilising the planet”, says PIK Director Johan Rockström.
All of these seven boundaries show worsening trends.
All of these seven boundaries show worsening trends.
The latest report from the Planetary Boundaries Science Lab at PIK has confirmed that Ocean Acidification has now been breached. This means that 7 of the 9 planetary boundaries have now been crossed.
#planetaryboundaries #PIK #oceans #oceanacidification #climatechange
#planetaryboundaries #PIK #oceans #oceanacidification #climatechange
September 25, 2025 at 1:00 PM
The latest report from the Planetary Boundaries Science Lab at PIK has confirmed that Ocean Acidification has now been breached. This means that 7 of the 9 planetary boundaries have now been crossed.
#planetaryboundaries #PIK #oceans #oceanacidification #climatechange
#planetaryboundaries #PIK #oceans #oceanacidification #climatechange
The Energy Imbalance Ladder breaks down the Earth’s Energy Imbalance growth into five steps, examining short wave and long wave radiation in both cloudy and clear sky areas. They describe what is happening to the planet and points to the root causes and feedbacks now in operation.
September 24, 2025 at 8:14 AM
The Energy Imbalance Ladder breaks down the Earth’s Energy Imbalance growth into five steps, examining short wave and long wave radiation in both cloudy and clear sky areas. They describe what is happening to the planet and points to the root causes and feedbacks now in operation.
SETI offers up a lesson on sustainability. New research concludes that the closest technological species to us could be 33,000 light years away but their civilisation would have to be at least 280,000 years old to coincide with us.
meetingorganizer.copernicus.org/EPSC-DPS2025...
meetingorganizer.copernicus.org/EPSC-DPS2025...
September 14, 2025 at 7:45 AM
SETI offers up a lesson on sustainability. New research concludes that the closest technological species to us could be 33,000 light years away but their civilisation would have to be at least 280,000 years old to coincide with us.
meetingorganizer.copernicus.org/EPSC-DPS2025...
meetingorganizer.copernicus.org/EPSC-DPS2025...
Safe underground CO2 storage could only reduce warming by 0.4-0.7ºC according to a new study assessing the prudent limits of CCS. When taking a risk based approach, the industry estimates are reduced by an order of magnitude.
substack.com/profile/3195...
substack.com/profile/3195...
September 4, 2025 at 9:30 AM
Safe underground CO2 storage could only reduce warming by 0.4-0.7ºC according to a new study assessing the prudent limits of CCS. When taking a risk based approach, the industry estimates are reduced by an order of magnitude.
substack.com/profile/3195...
substack.com/profile/3195...
Perhaps we should be looking out for similar tactics from those lovely fossil fuel folks.
Something that sounds like it’s environmentally friendly but actually leads to them selling more of their damaging product and creating even more emissions.
Hydrogen for example 🤔
Something that sounds like it’s environmentally friendly but actually leads to them selling more of their damaging product and creating even more emissions.
Hydrogen for example 🤔
August 29, 2025 at 11:46 AM
Perhaps we should be looking out for similar tactics from those lovely fossil fuel folks.
Something that sounds like it’s environmentally friendly but actually leads to them selling more of their damaging product and creating even more emissions.
Hydrogen for example 🤔
Something that sounds like it’s environmentally friendly but actually leads to them selling more of their damaging product and creating even more emissions.
Hydrogen for example 🤔
Of the 400 million exposed people, 86% of them are in Africa. The United States, Europe and Australia collectively account for less than 2.5% of global human exposure to wildfire.
August 26, 2025 at 2:25 PM
Of the 400 million exposed people, 86% of them are in Africa. The United States, Europe and Australia collectively account for less than 2.5% of global human exposure to wildfire.
The study across 157 countries found that when temperatures exceed 35ºC, posts’ sentiments become about 25% more negative in lower-income countries and about 8% more negative in better-off countries. This underscores the need for better adaptation in poorer countries as global warming accelerates.
August 22, 2025 at 1:50 PM
The study across 157 countries found that when temperatures exceed 35ºC, posts’ sentiments become about 25% more negative in lower-income countries and about 8% more negative in better-off countries. This underscores the need for better adaptation in poorer countries as global warming accelerates.
Heat isn’t just a physical health risk, it also gets us down emotionally. A study analysed 1.2 billion social media posts linked to geographic, weather and economic levels to measure the mood under different temperatures.
Paper: www.cell.com/one-earth/ab...
#climatechange #heat #mentalhealth
Paper: www.cell.com/one-earth/ab...
#climatechange #heat #mentalhealth
August 22, 2025 at 1:48 PM
Heat isn’t just a physical health risk, it also gets us down emotionally. A study analysed 1.2 billion social media posts linked to geographic, weather and economic levels to measure the mood under different temperatures.
Paper: www.cell.com/one-earth/ab...
#climatechange #heat #mentalhealth
Paper: www.cell.com/one-earth/ab...
#climatechange #heat #mentalhealth
The smoke cloud is huge for a European fire. The smoke over the Atlantic is from Canada, but the smoke over Iberia and drifting north is all home produced.
earth.nullschool.net#current/part...
earth.nullschool.net#current/part...
August 18, 2025 at 7:55 AM
The smoke cloud is huge for a European fire. The smoke over the Atlantic is from Canada, but the smoke over Iberia and drifting north is all home produced.
earth.nullschool.net#current/part...
earth.nullschool.net#current/part...
It's not all doom and gloom.
Just enjoying a rather good sparkling pink pinot noir from a vineyard in Cornwall 😯
Just enjoying a rather good sparkling pink pinot noir from a vineyard in Cornwall 😯
August 15, 2025 at 1:47 PM
It's not all doom and gloom.
Just enjoying a rather good sparkling pink pinot noir from a vineyard in Cornwall 😯
Just enjoying a rather good sparkling pink pinot noir from a vineyard in Cornwall 😯
The new study analysed corals in the Maldives (lucky devils). They detect two acceleration inflection points, the first in 1959 which aligns closely with global temperature increases and accelerated glacial melt.
The rise since the mid-20th century is 30cm, now rising at 4.4mm/yr
The rise since the mid-20th century is 30cm, now rising at 4.4mm/yr
August 12, 2025 at 3:03 PM
The new study analysed corals in the Maldives (lucky devils). They detect two acceleration inflection points, the first in 1959 which aligns closely with global temperature increases and accelerated glacial melt.
The rise since the mid-20th century is 30cm, now rising at 4.4mm/yr
The rise since the mid-20th century is 30cm, now rising at 4.4mm/yr
In case you were wondering, the dinosaur tooth on my desk is from a 100 million year old Carcharodontosaurus, a European/North African member of the Allosaurus family. It has serrated edges at the front and back for cutting flesh which are still sharp.
August 7, 2025 at 11:19 AM
In case you were wondering, the dinosaur tooth on my desk is from a 100 million year old Carcharodontosaurus, a European/North African member of the Allosaurus family. It has serrated edges at the front and back for cutting flesh which are still sharp.
Well no.
Net zero will leave the climate well above safe temperatures and vulnerable to tipping elements that could push the planet into the regime it last occupied when CO2 levels were so high. The stable Miocene climate, 15 million years ago, saw temperatures at 4.5ºC for today’s CO2 levels.
Net zero will leave the climate well above safe temperatures and vulnerable to tipping elements that could push the planet into the regime it last occupied when CO2 levels were so high. The stable Miocene climate, 15 million years ago, saw temperatures at 4.5ºC for today’s CO2 levels.
August 6, 2025 at 8:26 AM
Well no.
Net zero will leave the climate well above safe temperatures and vulnerable to tipping elements that could push the planet into the regime it last occupied when CO2 levels were so high. The stable Miocene climate, 15 million years ago, saw temperatures at 4.5ºC for today’s CO2 levels.
Net zero will leave the climate well above safe temperatures and vulnerable to tipping elements that could push the planet into the regime it last occupied when CO2 levels were so high. The stable Miocene climate, 15 million years ago, saw temperatures at 4.5ºC for today’s CO2 levels.