Jovial Monk wrote Today at 9:51am:
The potential for abrupt changes is far less understood in the Antarctic compared with the Arctic, but evidence is emerging for rapid, interacting and sometimes self-perpetuating changes in the Antarctic environment. A regime shift has reduced Antarctic sea-ice extent far below its natural variability of past centuries, and in some respects is more abrupt, non-linear and potentially irreversible than Arctic sea-ice loss.
A marked slowdown in Antarctic Overturning Circulation is expected to intensify this century and may be faster than then anticipated Atlantic Meridional Overturning Circulation slowdown.
Suspected future losses are now a sign of AGW.
Jovial Monk wrote Today at 9:55am:
The amount of sea ice surrounding Antarctica has declined precipitously over the past decade.
"More so than the Arctic, Antarctic sea ice extents are extremely variable, both seasonally and from year to year. In the past decade there have been record and near-record high extents, as well as record and near-record lows. The overall long-term trend (since 1979) is nearly flat."
https://www.climate.gov/news-features/understanding-climate/understanding-climat... Dated 2025
Jovial Monk wrote Today at 10:09am:
In this same model, the addition of meltwater to the surface ocean drives a projected 42% decline in Antarctic Bottom Water formation by 2050 in a high-warming scenario.
...
"This evidence suggests that a rapid and substantial slowdown in Antarctic Overturning Circulation is already underway, with observations suggesting that modelled rates of future decline may be underestimated. "
The result from models is not evidence of anything. Observations count.
[quote author=Jovial_Abbott link=1762818687/3#3 date=1762820175]It is well recognized that the Antarctic Ice Sheet is prone to tipping dynamics.
Actually tipping points are an hypothesis, backed by nothing. Else the warmer periods that the earth has had would have tipped it.
But I see the names Abrams and England attached. Alarmists writ large.
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