Ian Hall's Avatar

Ian Hall

@ianhall.bsky.social

Climate scientist, palaeoclimatologist, marine geologist and ageing marathon runner. Prof. @ Cardiff University, views are my own, #FirstGen, He/Him 🏴󠁧󠁒󠁷󠁬󠁳󠁿πŸ‡ͺπŸ‡Ί

3,295 Followers  |  777 Following  |  1,965 Posts  |  Joined: 23.10.2023  |  1.9622

Latest posts by ianhall.bsky.social on Bluesky

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Careful land allocation for carbon dioxide removal is critical for safeguarding biodiversity - Nature Climate Change A spatial assessment of global decarbonization scenarios reveals that land allocated for carbon dioxide removal substantially overlaps with areas of high biodiversity importance. The implications of s...

Global decarbonization efforts relying on land-based CDR (forestation, BECCS) could conflict with biodiversity conservation.

Up to 13% of global areas of high biodiversity importance might be used for CDR, risking unsustainable outcomes.

www.nature.com/articles/s41...

05.02.2026 19:59 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Not knocking the UK’s 3% emissions drop or global efforts; every bit matters.

Just pointing out that progress is vital, but so is urgency!

05.02.2026 17:50 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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UK greenhouse gas emissions fell 3% in 2024, latest figures show The biggest fall in emissions was from electricity supplies.

UK emissions may be down 3% in 2024 πŸ‘, but global CO2 levels are still rising too fast, and we’re set to miss the 1.5Β°C target. Even with cleaner energy, the scale of emissions and deforestation makes hitting climate goals feel increasingly out of reach.

www.independent.co.uk/climate-chan...

05.02.2026 17:36 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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Atmospheric carbon dioxide rise to remain too fast to track global climate targets in 2026 The latest forecast from Met Office scientists indicates that the rate of atmospheric carbon dioxide (COβ‚‚) increase this year will remain too fast to meet climate targets outlined for limiting global ...

No surprise. You don’t hit targets you refuse to act on.

www.metoffice.gov.uk/about-us/new...

05.02.2026 12:36 β€” πŸ‘ 35    πŸ” 16    πŸ’¬ 0    πŸ“Œ 1
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Scientists Urge International Cooperation to Mitigate a Catastrophic AMOC Failure This blog post and the β€œDeep Dive” podcast, created by NotebookLM, are based on β€œA Nordic Perspective on AMOC Tipping: Impacts and Strategies for Prevention and Governance” by Nummelin et al. (2026…

Nordic research council urges international cooperation to mitigate an AMOC failure: 🌊πŸ§ͺ ocean2climate.org/2026/02/05/s...

05.02.2026 12:21 β€” πŸ‘ 14    πŸ” 12    πŸ’¬ 0    πŸ“Œ 4
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South Pacific carbon uptake controlled by West Antarctic Ice Sheet dynamics - Nature Geoscience Iron derived from debris eroded by the West Antarctic Ice Sheet rather than from dust deposition drove variations in carbon export in the South Pacific Antarctic region over the past 500,000 years, ac...

South Pacific carbon uptake controlled by West Antarctic Ice Sheet dynamics www.nature.com/articles/s41...

05.02.2026 09:13 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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Dusting off the iron hypothesis - Nature Geoscience Erosion by the West Antarctic Ice Sheet can supply iron to the Southern Ocean, with iron solubility as important as iron quantity in shaping ocean productivity and carbon cycling. The future projectio...

The West Antarctic Ice Sheet may be delivering not just sediment, but bioavailable Fe to the Southern Ocean, challenging how we model iron limitation and carbon export.

A timely rethink of the iron hypothesis!

www.nature.com/articles/s41...

05.02.2026 09:13 β€” πŸ‘ 12    πŸ” 4    πŸ’¬ 2    πŸ“Œ 0
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Recalibrating Climate Risk - Carbon Tracker Initiative Why economic damage models can miss extremes and compounding shocks near 2Β°C – with practical recommendations for policy and finance.

carbontracker.org/reports/reca...

05.02.2026 05:49 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Flawed economic models mean climate crisis could crash global economy, experts warn States and financial bodies using modelling that ignores shocks from extreme weather and climate tipping points

Current economic models miss the mark on climate risks, warning that catastrophic tipping points and extreme weather could crash the global economy, far worse than 2008.

As said many times before delaying action will be far costlier than cutting emissions now.

www.theguardian.com/environment/...

05.02.2026 05:46 β€” πŸ‘ 26    πŸ” 11    πŸ’¬ 1    πŸ“Œ 2

From a research perspective, I think the issue isn’t simply moral capacity at the individual level. It’s how (or whether) societies convert concern for others into durable political and institutional responses.

I’m sure @thierryaaron.bsky.social would be happy to comment.

04.02.2026 17:32 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Climate β€˜fingerprints’ mark human activity from the top of the atmosphere to the bottom of the ocean The ocean is warming as the upper atmosphere is cooling – both as a result of excessive greenhouse gas emissions.

Rising GHGs create a TOA energy imbalance - less heat escapes to space

Predicted fingerprints: tropospheric warming, stratospheric cooling, ocean heat uptake

Observed reality: 11 warmest years since 1850 are in the last decade

Theory β†’ prediction β†’ observation

theconversation.com/climate-fing...

04.02.2026 13:12 β€” πŸ‘ 28    πŸ” 16    πŸ’¬ 2    πŸ“Œ 0
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β€˜If I think about what this means, I want to cry’: what happens when a city loses its university? When Essex University’s Southend campus opened, it was a message of hope for a β€˜left behind’ UK seaside town. Its closure will be felt far beyond its 800 students, some of whom will not get their degr...

As academics, we know universities are more than balance sheets.

www.theguardian.com/environment/...

04.02.2026 08:43 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Science of Sea Ice | National Snow and Ice Data Center Sea ice is classified by stages of development that relate to thickness and age. A simple classification categorizes sea ice into two primary age groups: first-year or multiyear.

Well, they call it pancake ice for a reason πŸ₯žβ„️

nsidc.org/learn/parts-...

04.02.2026 08:34 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Repair Cafe Wales Saves More than 1m Kilograms of Carbon Dioxide Emissions The Deputy First Minister with responsibility for Climate Change and Rural Affairs, Huw Irranca-Davies, has launched Fix it February at a pop-up repair

Repair, reuse, reduce - it works.

Repair CafΓ© Wales has helped save over 1 million kg of CO2 by fixing, reusing and sharing, keeping items in use and out of landfill.

Small fixes. Big impact.

Community-powered climate action at its best πŸ‘

businessnewswales.com/repair-cafe-...

04.02.2026 06:53 β€” πŸ‘ 24    πŸ” 8    πŸ’¬ 1    πŸ“Œ 0

I read it the opposite way. The point isn’t β€œsecurity first, climate later”, it’s that climate is already a security issue. Treating it as separate is exactly what’s failed so far.

04.02.2026 05:47 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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A UK climate security report backed by the intelligence services was quietly buried – a pattern we’ve seen many times before Governments have been warned about climate change for 70 years. They’re still suppressing the worst news.

A UK climate security report backed by the intelligence services was quietly buried – a pattern we’ve seen many times before

theconversation.com/a-uk-climate...

04.02.2026 05:25 β€” πŸ‘ 21    πŸ” 9    πŸ’¬ 1    πŸ“Œ 0
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The expanding Indo-Pacific freshwater pool and changing freshwater pathway in the South Indian Ocean - Nature Climate Change Ocean salinity could change as the climate warms. Here the authors show that the South Indian Ocean has freshened most of the Southern Hemisphere oceans and highlight the mechanisms behind this freshe...

🌊 The expanding Indo-Pacific freshwater pool and changing freshwater pathway in the South Indian Ocean

...which has seen the strongest freshening in the Southern Hemisphere since the 1960s, driven by stronger Indonesian Throughflow and intensified subtropical inflows

www.nature.com/articles/s41...

03.02.2026 16:15 β€” πŸ‘ 8    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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Some tropical land may heat up nearly twice as much as oceans under climate change, sediment record suggests Some tropical land regions may warm more dramatically than previously predicted, as climate change progresses, according to a new CU Boulder study that looks millions of years into Earth's past. Using...

Some tropical land may heat up nearly twice as much as oceans under climate change, Pliocene sediment record suggests

phys.org/news/2026-02...

03.02.2026 16:08 β€” πŸ‘ 9    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
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Lecturer in Physical Oceanography (ATR1734) in University of East Anglia | UEA View details and apply for this Lecturer in Physical Oceanography (ATR1734) vacancy in University of East Anglia. Faculty of Science School of Environmental Sciences Lecturer in Physical Oceano...

We are advertising for a Lecturer in Physical Oceanography, closing date 31 March.

If you have research interests in the shelf seas, estuarine and coastal oceans then this could be for you!

And you could do research using UEA's fleet of ocean gliders

vacancies.uea.ac.uk/vacancies/20...

03.02.2026 13:03 β€” πŸ‘ 10    πŸ” 25    πŸ’¬ 0    πŸ“Œ 2

No claim here that the US was the only obstacle. Climate negotiations have always been shaped by competing agendas from the US, China, Russia, India, and others. The piece asks what climate action looks like when that reality becomes more explicit, not who to blame.

03.02.2026 08:42 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 1

One of the most surprising things I've learned from my research is that "how hot it's gotten so far" doesn't tell us much about "how hot it's going to get eventually". Long-ago, really weird climates can tell us a lot more about where we're headed.

02.02.2026 20:37 β€” πŸ‘ 107    πŸ” 28    πŸ’¬ 3    πŸ“Œ 1
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Flood-prone Ynysybwl homes to be bought and bulldozed by council Homes on a street at severe risk of flooding will be bought by a local council.

Our local climate change flood risk strategy: Buy, demolish, repeat…

www.bbc.co.uk/news/article...

03.02.2026 06:05 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Preventable deaths in a warming world: how politics shapes who lives and who dies Preventable suffering is both widespread and socially produced.

Preventable deaths in a warming world: how politics shapes who lives and who dies

@thierryaaron.bsky.social argues
vulnerability to climate change isn’t fate - it's a political choice.

theconversation.com/preventable-...

03.02.2026 05:46 β€” πŸ‘ 14    πŸ” 5    πŸ’¬ 1    πŸ“Œ 1
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Coral Diversity Drops as Ocean Acidifies - Eos As seawater becomes steadily more acidic, complex branching corals die off and are replaced with hard boulder corals and algae.

🌊 Coral Diversity Drops as Ocean Acidifies

eos.org/articles/cor...

03.02.2026 05:33 β€” πŸ‘ 24    πŸ” 17    πŸ’¬ 1    πŸ“Œ 0
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Addressing climate change without the β€˜rules-based order’ Everyone who cares about climate action must now grapple with how climate politics can function in a new world of uncertainty.

Addressing climate change without the β€˜rules-based order’

In a fragmented world, new pathways to climate action may emerge through decentralized efforts, coalitions, and renewables.

The challenge is turning uncertainty into opportunity!

theconversation.com/addressing-c...

03.02.2026 05:28 β€” πŸ‘ 11    πŸ” 7    πŸ’¬ 2    πŸ“Œ 0
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Food delivery riders brave Australia’s β€˜brutal’ 40C heat so we don’t have to – but who’s protecting them? Australia’s gig workers should not be forced to choose between their health and a paycheque when temperatures soar, experts say

Hot enough to melt a tyre...but not hot enough for gig platforms to pause deliveries?

If they can set prices and performance targets, they can set heat cut-offs, paid breaks, and safety standards.

www.theguardian.com/australia-ne...

02.02.2026 14:36 β€” πŸ‘ 16    πŸ” 5    πŸ’¬ 2    πŸ“Œ 0
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Should the Arctic be refrozen? It is possible. But as an end in itself, it is not advisable

You can’t out-engineer a problem you refuse to stop causing.

www.economist.com/science-and-...

01.02.2026 09:35 β€” πŸ‘ 32    πŸ” 10    πŸ’¬ 1    πŸ“Œ 0
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What 50C summers will mean for Australia β€” and why they're more likely Heatwaves are becoming longer, more frequent and more intense with multiple days of 50C looking more likely.

What 50C summers will mean for Australia - and why they’re more likely

www.abc.net.au/news/2026-02...

01.02.2026 06:19 β€” πŸ‘ 7    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
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Biodiversity implications of land-intensive carbon dioxide removal - Nature Climate Change Carbon dioxide removal (CDR) plays an important role in decarbonization pathways to meet climate goals, but some methods are land-intensive. Multimodel analysis reveals conflicts between biodiversity ...

Climate solutions can clash with nature: 1.5Β°C pathways may place land-intensive CDR on up to 13% of high-biodiversity areas.

Protecting hotspots could remove over half of planned CDR land, unless we design climate action for nature too.

www.nature.com/articles/s41...

01.02.2026 06:11 β€” πŸ‘ 16    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0
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Jeremy Clarkson: Net zero is unhuman. Who wants to be sad? The best inventions make our lives easier. Ed Miliband’s ideas mostly taste like chickpeas

Calling net zero β€œunhuman” is a bold take, given that humans adapted fire, agriculture, medicine and flight - but cleaner energy is where we draw the line.

Climate change (physics), meanwhile, remains unmoved by nostalgic bullshit.

www.thetimes.com/comment/colu...

01.02.2026 06:00 β€” πŸ‘ 15    πŸ” 5    πŸ’¬ 5    πŸ“Œ 3

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