Even if we manage to stabilize Earth's temperatures by peaking at 2 °C, Greenland's and Antarctica's vast ice sheets are on track for irreversible melting, a new study warns.
But Park and team's new calculations suggest this irreversible process could be triggered at just 1.8 °C.
It was only in their most aggressive mitigation scenario, keeping temperatures below 1.5 °C, that the model showed we could avoid this rapid acceleration in sea level rise. "If we don't take any action, retreating ice sheets would continue to increase sea level by at least 100 centimeters within the next 130 years,""This would be on top of other contributions, such as the thermal expansion of ocean water."
Such a scenario would seriously impact mega-cities on every continent, including urban centers such as Cairo, Mumbai, Shanghai, London, Los Angeles, New York, and Buenos AiresAs alarming as the potential might be, there are plenty of features affecting our complex ecological systems that the new modeling hasn't included, such as"It's crucial that developments such as theirs are brought into our state of the art climate models,""Even though more work needs to be done to...
That doesn't mean we have the luxury of waiting to find out. Every increment of warming we can avoid gives us a far better chance of helping future societies avoid the worst of a rapidly warming planet.
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