Lightnews — Scholar-powered news

Ian Hall @ianhall.bsky.social · 10h

🌊 A triple planetary crisis now affects every part of the ocean

oceanographicmagazine.com/news/a-tripl...

A triple planetary crisis now affects every part of the ocean - Oceanographic

It's according to the Ninth Copernicus Ocean State Report that every part of the ocean is now affected by the triple planetary crisis.

oceanographicmagazine.com

12 18

Ian Hall @ianhall.bsky.social · 1d

🌊 Marine heatwaves to become more frequent off UK and Irish coasts, experts say

Scientists find 10% chance that similar events to the ‘unheard of’ temperatures in 2023 could occur each year

www.theguardian.com/environment/...

Marine heatwaves to become more frequent off UK and Irish coasts, experts say

Scientists find 10% chance that similar events to the ‘unheard of’ temperatures in 2023 could occur each year

www.theguardian.com

4 9

Ian Hall @ianhall.bsky.social · 1d

New modelling study suggests the deglacial radiocarbon seesaw was driven by weaker Antarctic overturning + lower Southern Ocean reservoir age — not stronger circulation.

Both poles had sluggish deep water flow.

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

Reduced Antarctic Bottom Water overturning rate during the early last deglaciation inferred from radiocarbon records - Nature Communications

Reconstructed radiocarbon ventilation seesaw and reduced Southern Ocean surface reservoir age imply reduced Antarctic Bottom Water overturning parallel to the weakened North Atlantic Deep Water overturning during the early deglaciation.

www.nature.com

4 9

Ian Hall @ianhall.bsky.social · 1d

They’re smaller than dust, but crucial for Earth’s climate

www.sciencedaily.com/releases/202...

They’re smaller than dust, but crucial for Earth’s climate

Coccolithophores, tiny planktonic architects of Earth’s climate, capture carbon, produce oxygen, and leave behind geological records that chronicle our planet’s history. European scientists are unitin...

www.sciencedaily.com

1 8 28

Ian Hall @ianhall.bsky.social · 2d

Well worth a reminder:

Factcheck: What the Climate Change Act does – and does not – mean for the UK

www.carbonbrief.org/factcheck-wh...

Factcheck: What the Climate Change Act does – and does not – mean for the UK - Carbon Brief

The UK’s Climate Change Act is a landmark piece of legislation that guides the nation’s response to global warming and has proved highly influential around the world.

www.carbonbrief.org

2

Ian Hall @ianhall.bsky.social · 2d

The Amazon is in crisis: In 2024, forest disturbances ⬆️ 152% to a 20-yr high (6.6M ha), with fire-driven degradation ⬆️ 400%, far exceeding deforestation

CO₂ emissions from fires hit 791 Mt, 7x ⬆️ than past years

Climate & land use are pushing it to a tipping point

bg.copernicus.org/articles/22/...

Extensive fire-driven degradation in 2024 marks worst Amazon forest disturbance in over 2 decades

Abstract. The Amazon rainforest, historically fire-resistant, is experiencing an alarming increase in wildfires due to climate extremes and human activity. The 2023–2024 drought, surpassing previous r...

bg.copernicus.org

1 7 25

Ian Hall @ianhall.bsky.social · 3d

Four things to know about climate change and human migration

phys.org/news/2025-10...

Four things to know about climate change and human migration

Climate change is making some regions less habitable for humans, whether by raising sea levels, hurting crop yields, or intensifying droughts, storms, and wildfires. Yet, if you ask people why they're...

phys.org

2 4 6

Ian Hall @ianhall.bsky.social · 3d

New Zealand oceans warming 34% faster than global average, putting homes and industry at risk, report finds

www.theguardian.com/world/2025/o...

New Zealand oceans warming 34% faster than global average, putting homes and industry at risk, report finds

NZ$180bn worth of housing and $26bn of infrastructure at risk of flooding and storm damage, new government report finds

www.theguardian.com

1 6 17

Ian Hall @ianhall.bsky.social · 4d

Extremely poleward shift of Antarctic Circumpolar Current by eccentricity during the Last Interglacial

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

Extremely poleward shift of Antarctic Circumpolar Current by eccentricity during the Last Interglacial - Nature Communications

The Antarctic Circumpolar Current (ACC) since the Last Interglacial is reconstructed, showing orbital-scale shifts in ACC position driven by eccentricity and precession, possibly counteracting the predicted southward shift due to global warming.

www.nature.com

6 19

Ian Hall @ianhall.bsky.social · 4d

Ocean heatwaves are breaking Earth’s hidden climate engine

Marine heatwaves are clogging the ocean’s carbon pump, threatening its power to fight climate change.

www.sciencedaily.com/releases/202...

Ocean heatwaves are breaking Earth’s hidden climate engine

Marine heatwaves can jam the ocean’s natural carbon conveyor belt, preventing carbon from reaching the deep sea. Researchers studying two major heatwaves in the Gulf of Alaska found that plankton shif...

www.sciencedaily.com

10 20

Ian Hall @ianhall.bsky.social · 5d

Climate change may create 'ecological trap' for species who can't adapt

phys.org/news/2025-10...

Climate change may create 'ecological trap' for species who can't adapt

Even as autumn days grow shorter, a warming climate means Ohio winters aren't as cold as they were just a few decades ago, according to National Oceanic and Atmospheric Administration data. This incre...

phys.org

1 2 5

Ian Hall @ianhall.bsky.social · 5d

Tory plan to scrap net zero target puts UK climate leadership at risk

Most people want climate action. Voters value this progress more than politicians appreciate...

theconversation.com/tory-plan-to...

Tory plan to scrap net zero target puts UK climate leadership at risk

The country has enjoyed a unique period of consensus and stability under the Climate Change Act, which the Tories now want to scrap.

theconversation.com

1 1 7

Ian Hall @ianhall.bsky.social · 5d

Marine heatwaves disrupt crucial carbon storage processes in the ocean, new study finds

www.euronews.com/green/2025/1...

Marine heatwaves are disrupting ocean’s crucial biological processes

A new study looks at the impacts of marine heatwaves on the ocean’s food web and processes.

www.euronews.com

1 4

Ian Hall @ianhall.bsky.social · 5d

🌊 Marine heatwaves modulate food webs and carbon transport processes

In 2015 & 2019, POC ⬆️ in the NE Pacific, but instead of sinking, tiny particles lingered mid-depth, cutting carbon sequestration

Ecosystem responses vary, and long-term ocean monitoring is crucial

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

Marine heatwaves modulate food webs and carbon transport processes - Nature Communications

A decade of BGC-Argo and plankton records shows North Pacific heatwaves reshape food webs and trap small particles in midwater, slowing deep-ocean carbon export. Impacts vary by event, underscoring the need for sustained ocean monitoring.

www.nature.com

1 6 16

Ian Hall @ianhall.bsky.social · 5d

Enhanced deep Southern Ocean stratification during the lukewarm interglacials

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

Enhanced deep Southern Ocean stratification during the lukewarm interglacials - Nature Communications

Lead (Pb) isotopes from a ferromanganese crust reveal that during lukewarm interglacials before the Mid-Brunhes Event, stronger deep Southern Ocean stratification limited CO2 release, helping keep atmospheric CO2 levels lower.

www.nature.com

2 8

Ian Hall @ianhall.bsky.social · 5d

🌊 How the Southern Ocean controlled climate and atmospheric carbon dioxide during the lukewarm interglacials

phys.org/news/2025-10...

How the Southern Ocean controlled climate and atmospheric carbon dioxide during the lukewarm interglacials

Earth's climate has fluctuated between cold and warm periods for millions of years. During the so-called "lukewarm interglacials"—warm phases between 800,000 and 430,000 years ago—atmospheric CO2 conc...

phys.org

1 4 7

Ian Hall @ianhall.bsky.social · 5d

Recent and early 20th century destabilization of the subpolar North Atlantic recorded in bivalves

www.science.org/doi/10.1126/...

Recent and early 20th century destabilization of the subpolar North Atlantic recorded in bivalves

Clams reveal North Atlantic destabilization in the early 20th century and at present.

www.science.org

7 10

Ian Hall @ianhall.bsky.social · 6d

One year after Port Talbot’s steelworks closure in South #Wales, promises of a “green jobs boom” ring hollow. Thousands lost work while investment flows south. Without a just transition that delivers real local benefits, #NetZero risks losing public trust.

theconversation.com/port-talbot-...

Port Talbot, one year on: steelworks closure shows why public is losing trust in net zero

When net zero leaves communities behind, people get angry.

theconversation.com

1 4

Ian Hall @ianhall.bsky.social · 6d

Air temperatures over Antarctica have soared 35ºC above average. What does this unusual event mean for Australia?

theconversation.com/air-temperat...

Air temperatures over Antarctica have soared 35ºC above average. What does this unusual event mean for Australia?

The stratospheric polar vortex high above Antarctica has rapidly heated up. These sudden bursts of heat can bring rapid weather changes in Australia

theconversation.com

1 7 23

Ian Hall @ianhall.bsky.social · 7d

🌊 New study overturns the “permanent El Niño” idea for the warm Pliocene

Upwelling in the eastern equatorial Pacific has persisted for 5 million years, even under ~3°C warmer climates

Future upwelling may be more resilient than feared…

www.science.org/doi/10.1126/...

Persistent eastern equatorial Pacific Ocean upwelling since the warm Pliocene

Upwelling generates a nutrient-rich “cold tongue” in the eastern equatorial Pacific Ocean (EEP), with impacts on global climate, oceanic biological productivity, and the carbon cycle. The cold tongue ...

www.science.org

1 7 33

Ian Hall @ianhall.bsky.social · 7d

The before and after images showing glaciers vanishing before our eyes

www.bbc.com/news/article...

Before and after images show glaciers vanishing before our eyes - BBC News

They are melting like never seen before, changing landscapes around the world beyond recognition.

www.bbc.com

2 33 55

Ian Hall @ianhall.bsky.social · 7d

phys.org/news/2025-10...

Antarctica sees similar climate change effects as Greenland: Study

The planet's warming climate is having effects in Antarctica that increasingly resemble those observed in the Arctic, meaning global sea levels could rise faster than previously predicted, Danish rese...

phys.org

1 2

Ian Hall @ianhall.bsky.social · 7d

The Greenlandification of Antarctica

Antarctica is beginning to behave more like Greenland, with surface melt, ice dynamics, and climate feedbacks in Antarctica exhibiting "Greenland-like” traits, which have major implications for sea-level rise projections.

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

The Greenlandification of Antarctica - Nature Geoscience

Climate and ice sheet processes in Antarctica increasingly reflect those observed earlier in Greenland. Applying process insights from Greenland can improve projections of future Antarctic ice and climate behaviour.

www.nature.com

2 22 57

Ian Hall @ianhall.bsky.social · 8d

🌊 Melting Arctic ice is opening the Arctic Sea Route, reshaping global trade, but at a cost.

A new study finds ASR use could raise global shipping emissions by 8.2% by 2100.

Current policies fall short…only a net-zero strategy can curb Arctic impacts.

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

Arctic Sea Route access reshapes global shipping carbon emissions - Nature Communications

Arctic Sea Route access will raise global shipping CO2 by 8.2% by 2100 and worsen regional inequities. IMO 2023 strategy and Green Corridor plans fall short; only a net-zero pathway with stricter fuels and phased rollout eliminates ASR emissions.

www.nature.com

1 9 22

Ian Hall @ianhall.bsky.social · 8d

🌊 Intensification of marine heatwaves and their climate drivers in the Arabian Gulf

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

Intensification of marine heatwaves and their climate drivers in the Arabian Gulf - Scientific Reports

Scientific Reports - Intensification of marine heatwaves and their climate drivers in the Arabian Gulf

www.nature.com

5 16