an irreversible 'tipping point'

"The tipping point for irreversible global warming may have already been triggered, the scientist who led the biggest-ever expedition to the Arctic has warned.

"The disappearance of summer sea ice in the Arctic is one of the first landmines in this minefield, one of the tipping points that we set off first when we push warming too far," said Professor Markus Rex.

"And one can essentially ask if we haven't already stepped on this mine and already set off the beginning of the explosion."

Professor Rex led the world's biggest mission to the North Pole, an expedition involving 300 scientists from 20 countries.

The expedition returned to Germany in October after 389 days drifting through the Arctic, bringing home devastating proof of a dying Arctic Ocean and warnings of ice-free summers in just decades."

"Summarising their first findings, Professor Rex said scientists found that the Arctic sea ice had retreated "faster in the spring of 2020 than since the beginning of records" and that "the spread of the sea ice in the summer was only half as large as decades ago".

https://www.sbs.com.au/news/scientists-fear-global-warming-has-already-passed-an...

Oh well the Arctic Ice had to disappear eventually. Although having been there 389 days you would expect them to have the data for Spring 2021.