Antarctica and collapsing west shelf

1.15202_NASAI used to be quite obsessed with how the different ice streams in west Antarctica turned from fast to slow flows. It was something that wasn’t entirely understood a decade or so ago. If you’ve not heard, the latest is that the west Antarctic ice sheet as a whole now looks like it is entering a positive feedback loop that will ultimately lead to its collapse. There are several stories on it here and here with the article in Science here. The collapse commits us to a bigger rise in sea level over the next several centuries than previously estimated.

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