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Antarctic research shows less sea ice forming and glacier melting from below
ABC NEWS (Australia)
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9/14/2023
Scientists have confirmed grave fears that the failure of a full sea ice return in Antarctica is the new norm. It comes as newly released data shows one of the icy continent's largest glaciers is melting from beneath.
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00:00
Hovering above East Antarctica, a team of scientists drop a probe into the icy waters
00:07
below.
00:08
Its purpose?
00:10
To test the temperature.
00:11
While a lot is known about the impact that warm water has in West Antarctica, the east
00:16
remains a bit of a mystery.
00:18
Over six days, dozens of probes were dropped into the cracks in the ice.
00:23
The data, fed back to scientists, was that warm water is melting the Totten Glacier,
00:28
the largest in East Antarctica, from below.
00:31
If it melts, it could mean an eventual sea level rise of three and a half metres.
00:37
The release of this research is timely.
00:39
In July, scientists warned that sea ice hadn't returned to its usual winter levels.
00:45
Today came confirmation low sea ice will be the new normal.
00:49
This new report is the first time we've been able to definitively link ocean warming with
00:54
sea ice changes.
00:56
As sea ice freezes in winter and melts in summer, it pumps vital nutrients into the
01:01
ocean.
01:02
It's like a heartbeat for the ocean.
01:05
But what we've seen lately is a marked change in that cycle.
01:10
Animals reliant on sea ice for breeding are already being impacted, and the loss of sea
01:15
ice could see the global ocean warm even more rapidly.
01:19
Dr. Doddridge says while we can't rule out a natural cause for these changes, there is
01:24
something we can control.
01:26
Really the only thing we can do is reduce our fossil fuel usage and greenhouse gas emissions.
01:32
Chilling predictions of a warmer future.
01:35
[BLANK_AUDIO]
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