Sea level rise will cause ‘catastrophic inland migration’, scientists warn | Rising oceans will force millions away from coasts even if global temperature rise remains below 1.5C, analysis finds

https://www.theguardian.com/environment/2025/may/20/sea-level-rise-migration

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  1. From the article: Sea level rise will become unmanageable at just 1.5C of global heating and lead to “catastrophic inland migration”, the scientists behind a new study have warned. This scenario may unfold even if the average level of heating over the last decade of 1.2C continues into the future.

    The loss of ice from the giant Greenland and Antarctic ice sheets has quadrupled since the 1990s due to the climate crisis and is now the principal driver of sea level rise.

    The international target to keep global temperature rise below 1.5C is already almost out of reach. But the new analysis found that even if fossil fuel emissions were rapidly slashed to meet it, sea levels would be rising by 1cm a year by the end of the century, faster than the speed at which nations could build coastal defences.

    The world is on track for 2.5C-2.9C of global heating, which would almost certainly be beyond tipping points for the collapse of the Greenland and west Antarctic ice sheets. The melting of those ice sheets would lead to a “really dire” 12 metres of sea level rise.

    Today, about 230 million people live within 1 metre above current sea level, and 1 billion live within 10 metres above sea level. Even just 20cm of sea level rise by 2050 would lead to global flood damages of at least $1tn a year for the world’s 136 largest coastal cities and huge impacts on people’s lives and livelihoods.

  2. My house will remain standing up to 35 metres of sea-level rise. I factored this in when I bought the place.

  3. Start building those ocean walls NYC, they at least looked cool in The Expanse.

  4. Ok_Possible_2260 on

    Yes, humans are accelerating climate change, but we didn’t invent it. Earth’s climate has *always* shifted, with ice ages, sea level drops, and mass extinctions, long before the first coal mine or SUV. What we’ve done is throw gasoline on a fire that was already smoldering. Pretending we’re the sole cause is as delusional as pretending we’re not involved at all.

    Nothing on this earth is permanent, including sea levels, and anything built by humans.

  5. TheRexRider on

    Since the glass of ice analogy keeps popping up in threads like this:

    Remember that not all ice is floating in the ocean. A lot of it is on land and will run off into the oceans. That’s where the rise comes from.

  6. thehourglasses on

    2.5 to 2.9C of heating? That’s ultra conservative. Paleo climate indicates that we’re going north of 8C…

  7. More rich people looking to buy beachfront properties I see..

    I mean California was supposed to be underwater 15 years ago

  8. wursmyburrito on

    Sea levels will rise and temperatures will change regardless of human activity. The earth will be fine and people will adapt. The planet tends to not stay within such a narrow temperature band for long. 10000 years ago the Sahara desert was green and it wasn’t Neolithic people that changed the environment. We’ll be ok

  9. Thats why the far right will keep winning, thats why they will keep negating the problem.

    They are the cause and they will profiting from It. At the expense of billions of lives, war and our freedoms.

  10. THEMATRIX-213 on

    There is nothing we can do to stop earth and it’s changes. We can cut the population of humans by 90% and go petroleum free, and it will do nothing. The event you are witnessing is called “global cycling”. This is normal. However the extreme amount of chemicals and garbage that only humans dump into the oceans is making the water toxic.

  11. Blackboard_Monitor on

    Welp, this was one of my considerations when I got my house, nice and safe in MN far away from the coasts.