Aleksandar Tomašević
Bread and CircusesCheck out the graph below, posted yesterday by Prof. Eliot Jacobson (@EliotJacobson) at Xitter.
What you see there is daily standard deviations of Antarctic sea ice extent for every day from 1989 to 2023, based on the 1991-2020 mean. Each blue line represents the SDs over a full year. Lighter is more recent. 2023 is in red.
Sea ice extent is now 6.4 (‼️) standard deviations below the 1991-2020 mean. That's far beyond any expectations, leaving scientists baffled, not to mention alarmed.
See -- https://www.abc.net.au/news/2023-07-24/antarctic-sea-ice-levels-nosedive-five-sigma-event/102635204
Note that the red line on the graph is not showing the current actual extent of sea ice, but rather deviation from the norm. Ice extent is increasing right now around Antarctica, because it's mid-winter. That means it's peak freeze season, except the ice is not growing anywhere near as fast as it should.
#Science #Environment #Climate #ClimateChange #ClimateCrisis #ClimateEmergency
Antarctic sea ice levels dive in 'five-sigma event', as experts flag worsening consequences for planet
Antarctic sea ice has usually been able to recover in winter. But this time it's different, with levels taking a sharp downward turn at a time of year when sea ice usually forms reliably — and experts are worried.
O=C=O
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Markus Palzer-Khomenko