Thread: [Continuation] Global warming discussion V
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Old 5th July 2019, 01:13 PM   #144
lomiller
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Originally Posted by The Atheist View Post
Feedback Loop #2735 - Antarctic sea ice has declined more in 4 years than Arctic ice has in 34 years, reversing the slight increases seen over the previous 30 years.

https://www.pnas.org/content/early/2.../25/1906556116

With vast amounts of ocean to absorb sun's rays than being reflected by the nice, white ice, we're looking at a fairly serious feedback loop, and the lack of sea ice and warmer waters are highly likely to impact on Antarctic glacial ice, thus raising sea levels.

This, against a backdrop of June 2019 being the planet's warmest month ever, some 2 deg C above "normal". https://climate.copernicus.eu/record...peratures-june

In NZ, Christchurch was 10 degrees warmer than its long-term average for July yesterday, and the whole country is still looking for winter, with ski-fields' only snow coming out of machines.
In Antarctica, sea ice is primarily a winter phenomenon so itís not subject to quite the same positive feedback as summer sea ice in the artic.

Iíd still recommend caution in claiming any trend in Antarctic sea ice. Itís a lot more erratic and dependant on the specific conditions of the winter in question and water conditions play a huge role so it can expand in spite of warmer temperatures and shrink in spite of cooler temperatures.
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