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aus+uk / uk.sci.weather / [ CC ] Antarctic sea-ice, record low extent for any austral autumn and winter.

[ CC ] Antarctic sea-ice, record low extent for any austral autumn and winter.

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From: diverse@tcp.co.uk (N_Cook)
Newsgroups: uk.sci.weather
Subject: [ CC ] Antarctic sea-ice, record low extent for any austral autumn
and winter.
Date: Fri, 07 Jul 2023 17:33:24 +0100
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by: N_Cook - Fri, 7 Jul 2023 16:33 UTC

Only 6,000 sq km added over the last day, nearing a very early and very
low peak for the year?
Continuing record minimum Antarctic sea-ice , on this day, of any year
of the satellite era, back to wrt 2022 the previous minima on that day
of the year
https://nsidc.org/arcticseaicenews/charctic-interactive-sea-ice-graph/

Deficits wrt various previous dies anno minima in 2019,2022 and 1980
8,000 sq km 29 Apr 2023
......
240,000 06 May
......
302,000 13 May
......
582,000 20 May
......
679,000 03 Jun
......
988,000 10 Jun
......
1.175 m sq km, 17 Jun
......
1.195 m sq km, 24 Jun
......
1.519 m sq km, 01 Jul
1.546 m sq km, 02 Jul
1.575 m sq km, 03 Jul
1.604 m sq km, 04 Jul
1.665 m sq km, 05 Jul
1.733 m sq km, 06 Jul

--
Global sea level rise to 2100 from curve-fitted existing altimetry data
<http://diverse.4mg.com/slr.htm>

Re: [ CC ] Antarctic sea-ice, record low extent for any austral autumn and winter.

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Subject: Re: [ CC ] Antarctic sea-ice, record low extent for any austral
autumn and winter.
From: abmcdonald33@gmail.com (Alastair B. McDonald)
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by: Alastair B. McDonald - Thu, 13 Jul 2023 18:34 UTC

On Friday, 7 July 2023 at 17:33:39 UTC+1, N_Cook wrote:
> Only 6,000 sq km added over the last day, nearing a very early and very
> low peak for the year?
> Continuing record minimum Antarctic sea-ice , on this day, of any year
> of the satellite era, back to wrt 2022 the previous minima on that day
> of the year
> https://nsidc.org/arcticseaicenews/charctic-interactive-sea-ice-graph/
>
> Deficits wrt various previous dies anno minima in 2019,2022 and 1980
> 8,000 sq km 29 Apr 2023
> .....

If you select all years on charctic for Antarctica the low ice extent is quite dramatic. I thought that the Arctic sea ice would be first to collapse but I am wrong yet again.
I also thought that once it became clear that global warming was happening, action would be taken when it was too late to avoid catastrophe. I reckon I was right about it being too late, but not about action being taken :-(

Re: [ CC ] Antarctic sea-ice, record low extent for any austral autumn and winter.

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From: diverse@tcp.co.uk (N_Cook)
Newsgroups: uk.sci.weather
Subject: Re: [ CC ] Antarctic sea-ice, record low extent for any austral autumn
and winter.
Date: Fri, 14 Jul 2023 14:41:10 +0100
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by: N_Cook - Fri, 14 Jul 2023 13:41 UTC

On 13/07/2023 19:34, Alastair B. McDonald wrote:
> On Friday, 7 July 2023 at 17:33:39 UTC+1, N_Cook wrote:
>> Only 6,000 sq km added over the last day, nearing a very early and very
>> low peak for the year?
>> Continuing record minimum Antarctic sea-ice , on this day, of any year
>> of the satellite era, back to wrt 2022 the previous minima on that day
>> of the year
>> https://nsidc.org/arcticseaicenews/charctic-interactive-sea-ice-graph/
>>
>> Deficits wrt various previous dies anno minima in 2019,2022 and 1980
>> 8,000 sq km 29 Apr 2023
>> .....
>
> If you select all years on charctic for Antarctica the low ice extent is quite dramatic. I thought that the Arctic sea ice would be first to collapse but I am wrong yet again.
> I also thought that once it became clear that global warming was happening, action would be taken when it was too late to avoid catastrophe. I reckon I was right about it being too late, but not about action being taken :-(
>

John Church, lead of the SLR bit of IPCC is giving a talk in Hampshire
next week
https://www.cafscientifiqueromsey.com
Another question to ask him
How much loss of Antarctic sea-ice before stressing WAIS , from storm
and warm water exposure, to total break point.
Then how long before the unbuttressed ice cliffs collapse, then how long
before the start of rapid slide off of the glaciers and what sort of SLR
per year onwards.

--
Global sea level rise to 2100 from curve-fitted existing altimetry data
<http://diverse.4mg.com/slr.htm>

Re: [ CC ] Antarctic sea-ice, record low extent for any austral autumn and winter.

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From: diverse@tcp.co.uk (N_Cook)
Newsgroups: uk.sci.weather
Subject: Re: [ CC ] Antarctic sea-ice, record low extent for any austral autumn
and winter.
Date: Sat, 22 Jul 2023 17:19:49 +0100
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by: N_Cook - Sat, 22 Jul 2023 16:19 UTC

On 14/07/2023 14:41, N_Cook wrote:
>
> John Church, lead of the SLR bit of IPCC is giving a talk in Hampshire
> next week
> https://www.cafscientifiqueromsey.com
> Another question to ask him
> How much loss of Antarctic sea-ice before stressing WAIS , from storm
> and warm water exposure, to total break point.
> Then how long before the unbuttressed ice cliffs collapse, then how long
> before the start of rapid slide off of the glaciers and what sort of SLR
> per year onwards.

He did not venture a timescale between WAIS collapse and full pelt
glacial runoff from Antartica as the downwards slope of the land
landward of the grounding zone has only recently been factored in to the
mechanics

--
Global sea level rise to 2100 from curve-fitted existing altimetry data
<http://diverse.4mg.com/slr.htm>

Re: [ CC ] Antarctic sea-ice, record low extent for any austral autumn and winter.

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From: diverse@tcp.co.uk (N_Cook)
Newsgroups: uk.sci.weather
Subject: Re: [ CC ] Antarctic sea-ice, record low extent for any austral
autumn and winter.
Date: Mon, 24 Jul 2023 16:52:51 +0100
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by: N_Cook - Mon, 24 Jul 2023 15:52 UTC

Deficit may be increasing again
Continuing record minimum Antarctic sea-ice , on this day, of any year
of the satellite era, back to wrt 2022 the previous minima on that day
of the year
https://nsidc.org/arcticseaicenews/charctic-interactive-sea-ice-graph/

--
Global sea level rise to 2100 from curve-fitted existing altimetry data
<http://diverse.4mg.com/slr.htm>

Subject	Author
[ CC ] Antarctic sea-ice, record low extent for any austral autumn	N_Cook
[ CC ] Antarctic sea-ice, record low extent for any austral	Alastair B. McDonald
[ CC ] Antarctic sea-ice, record low extent for any austral autumn	N_Cook
[ CC ] Antarctic sea-ice, record low extent for any austral autumn	N_Cook
[ CC ] Antarctic sea-ice, record low extent for any austral	N_Cook