🌊 I could use an expletive, but I genuinely don’t know where to start...😂🤣😂
@ianhall.bsky.socialProf Ian Hall
@ianhall.bsky.social
🌍 Climate Scientist & Palaeoclimatologist | Marine Geologist | Professor @ Cardiff University | Ageing marathon runner | #FirstGen | He/Him | 🏴 🇪🇺 The climate has changed before. Earth’s past can tell us a lot about what happens next.
@ianhall.bsky.social@ianhall.bsky.socialFlash floods hit central Nepal...
@ianhall.bsky.socialOne month doesn’t make a trend. But the trend is unmistakable.
@ianhall.bsky.socialWe’re cutting mercury emissions, but climate change could bring yesterday’s pollution back into the food chain.
Thawing permafrost, wildfires, and warming waters may change how mercury moves and becomes toxic methylmercury.
@polarrobs.bsky.socialReposted by @ianhall.bsky.social🧵🌊❄️ For the past week Antarctic sea-ice extent has closely tracked its decline through the same week in the previous record low year of 2023. The persistent low extent then was so far below anything recorded before that even experts were surprised and struggled to explain the sudden change.
@ianhall.bsky.socialAlmost 300,000 people now live in flood‑prone areas in the Nepalese Himalayas – new research
@ianhall.bsky.social2024 saw more extreme rainfall events worldwide than any year on record.
Global warming set the stage, while El Niño and unusually warm tropical oceans helped intensify extremes early in the year.
With El Niño strengthening, the lesson from 2024 matters: prepare.
@ianhall.bsky.socialFragile masculinity, meet existential crisis…
@ianhall.bsky.social‘Like an earthquake’: El Niño is coming for California – is the state ready?
The real danger of El Niño isn’t just one extreme event. It’s how hazards connect and cascade, compounding risks and impacts.
@ianhall.bsky.socialThere is no faster way to lose the future than to turn away the people who will help build it.
@ianhall.bsky.socialEl Niño's storm-killer winds and climate's warming waters in fight over future of Hurricane Isaias
Climate is a balancing act.
@ianhall.bsky.social🌊 Ocean acidification pushes Mediterranean marine calcifiers toward a tipping point
A reminder that biodiversity loss isn’t just about how many species we lose, but it's also about what ecosystems can still do.
@ianhall.bsky.socialImprecise, but I don’t think this is the glaring error you suggest. There’s a difference between emissions rising, their growth rate slowing, and emissions accelerating. More accurately, emissions are still rising, but their long-term growth rate has slowed.
@ianhall.bsky.social🌊 Nature-based ≠ automatically carbon-negative
Oyster reefs can grow faster as sea levels rise, helping protect coasts from waves, but they may not store net carbon. Shell formation can offset the CO2 buried in reef sediments.
@ianhall.bsky.socialClimate change isn’t taking us to one new, stable place. It’s pushing us into a future of constant change and growing uncertainty.
So the question isn’t: What will the new normal be?
It’s: How do we prepare for a climate that won’t stand still?
Worth reading:
@ianhall.bsky.socialAustralia’s bush fires got worse after British colonization — this is why
The suppression of Indigenous burning practices probably spurred the growth of flammable forests.
@ianhall.bsky.socialYes, and that’s actually one of the points the article makes. People don’t make choices in a vacuum: income, infrastructure and the options available to us shape behaviour far more than climate concern alone.
@ianhall.bsky.socialA record-breaking UK summer may be shifting climate attitudes.
62% now say extreme heat is the most pressing climate impact, up from 36% in October 2024. Concern about wildfires has soared from 13% to 47%.
But still little change in behaviour…
@ianhall.bsky.socialA potentially wild El Niño ahead.
Niño 3.4 is forecast around +3.7°C for Oct–Nov–Dec, peaking in December.
For context: the previous record was +2.6°C in 2015–16.
Time to focus-up…
@ianhall.bsky.socialTropical Storm Isaias forecast to become first Atlantic hurricane of 2026