One other excessive low for Antarctic sea ice indicators a everlasting shift

For the second yr in a row, Antarctic sea ice has reached near-record low ranges. This reinforces considerations that human-caused local weather change has initiated a long-lasting “regime shift” within the quantity of ice that kinds within the Southern Ocean annually.

“Final yr we have been speaking about whether or not Antarctic sea ice is present process a regime shift. Not anymore,” says Edward Doddridge on the Institute for Marine and Antarctic Research in Australia. “Antarctica has fairly definitively answered that query for us. Now we’re speaking about what the impacts of that…