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Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #150 on: February 16, 2023, 04:53:46 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 15th, 2023:
      13,757,481 km2, an increase of 18,953 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #151 on: February 16, 2023, 12:59:12 PM »
JAXA ARCTIC SEA ICE EXTENT:  13,757,481 KM2 as at 15-Feb-2023

- Extent gain on this day 19k which is 24 k less than the average gain on this day (of the last 10 years) of 43k,
- Extent gain from minimum on this date is 9,234 k, which is 430 k, 4.4% less than the 10 year average of 9,663 k.

- Extent is 5th lowest in the 44 year satellite record.

- Extent is  217 k LESS than 2021,
- Extent is  237 k LESS than 2020,
- Extent is  411 k MORE than  2018,
- Extent is  83 k MORE than 2017
- Extent is  272 k LESS than 2012
- Extent is  1,564 k LESS than the 1980’s Average
- Extent is  94 k LESS than the 2010's Average.

On average 95.8% of extent gains from minimum to maximum done, and 22 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.11 million km2, 0.23 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
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gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #152 on: February 16, 2023, 02:33:27 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,552,651 KM2 as at 15-Feb-2023

- Area gain on this day 71k, which is 36 k more than the average gain on this day (of the last 10 years) of 35k,
- Area gain from minimum on this date is 9,335 k, which is 227 k, 2.4% less than the 10 year average of 9,562 k.

- Area is at position #5 in the satellite record

- Area is  133 k LESS than 2022,
- Area is  251 k LESS than 2021,
- Area is  303 k LESS than 2020,
- Area is  578 k MORE than 2017
- Area is  1,093 k LESS than the 1980’s Average
- Area is  4 k LESS than the 2010's Average
_____________________________________________
On average 94.9% of Area gains from minimum to maximum done, and 24 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.16 million km2, 0.46 million km2 above the March 2016 record low maximum of 12.63 million km2, and 11th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #153 on: February 17, 2023, 04:55:57 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 16th, 2023:
      13,715,197 km2, a drop of -42,284 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #154 on: February 17, 2023, 08:26:48 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,715,197 KM2 as at 16-Feb-2023

- Extent loss on this day 42k which is 54 k less than the average gain on this day (of the last 10 years) of 12k,
- Extent gain from minimum on this date is 9,191 k, which is 482 k, 5.0% less than the 10 year average of 9,674 k.

- Extent is 4th lowest in the 44 year satellite record.

- Extent is  264 k LESS than 2021,
- Extent is  264 k LESS than 2020,
- Extent is  353 k MORE than  2018,
- Extent is  6 k MORE than 2017
- Extent is  347 k LESS than 2012
- Extent is  1,628 k LESS than the 1980’s Average
- Extent is  157 k LESS than the 2010's Average.

On average 95.9% of extent gains from minimum to maximum done, and 21 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.05 million km2, 0.17 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #155 on: February 17, 2023, 08:51:03 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,601,188 KM2 as at 16-Feb-2023

- Area gain on this day 49k, which is 12 k more than the average gain on this day (of the last 10 years) of 37k,
- Area gain from minimum on this date is 9,384 k, which is 215 k, 2.2% less than the 10 year average of 9,599 k.

- Area is at position #5 in the satellite record

- Area is  107 k LESS than 2022,
- Area is  232 k LESS than 2021,
- Area is  252 k LESS than 2020,
- Area is  537 k MORE than 2017
- Area is  1,052 k LESS than the 1980’s Average
- Area is  1 k LESS than the 2010's Average
_____________________________________________
On average 95.2% of Area gains from minimum to maximum done, and 23 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.17 million km2, 0.47 million km2 above the March 2016 record low maximum of 12.63 million km2, and 11th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #156 on: February 18, 2023, 05:12:33 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 17th, 2023:
      13,657,886 km2, a drop of -57,311 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #157 on: February 18, 2023, 05:44:00 PM »
The sun was shining and the air was calm - very very unusual here at this time of year, so the ASIF had to wait while I went out for some much needed vitamin D.

JAXA ARCTIC SEA ICE EXTENT:  13,657,886 KM2 as at 17-Feb-2023

- Extent loss on this day 57k which is 24 k less than the average loss on this day (of the last 10 years) of 33k,
- Extent gain from minimum on this date is 9,134 k, which is 516 k, 5.4% less than the 10 year average of 9,650 k.

- Extent is 3th lowest in the 44 year satellite record.

- Extent is  217 k LESS than 2021,
- Extent is  295 k LESS than 2020,
- Extent is  303 k MORE than  2018,
- Extent is  65 k LESS than 2017
- Extent is  459 k LESS than 2012
- Extent is  1,711 k LESS than the 1980’s Average
- Extent is  210 k LESS than the 2010's Average.

On average 95.6% of extent gains from minimum to maximum done, and 20 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.01 million km2, 0.14 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #158 on: February 18, 2023, 07:21:07 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,629,712 KM2 as at 17-Feb-2023

- Area gain on this day 29k, which is 3 k less than the average gain on this day (of the last 10 years) of 32k,
- Area gain from minimum on this date is 9,412 k, which is 219 k, 2.3% less than the 10 year average of 9,631 k.

- Area is at position #6 in the satellite record

- Area is  109 k LESS than 2022,
- Area is  194 k LESS than 2021,
- Area is  249 k LESS than 2020,
- Area is  458 k MORE than 2017
- Area is  1,035 k LESS than the 1980’s Average
- Area is  12 k LESS than the 2010's Average
_____________________________________________
On average 95.5% of Area gains from minimum to maximum done, and 22 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.16 million km2, 0.47 million km2 above the March 2016 record low maximum of 12.63 million km2, and 11th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #159 on: February 19, 2023, 04:51:32 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 18th, 2023:
      13,656,212 km2, a drop of -1,674 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #160 on: February 19, 2023, 05:45:03 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,656,212 KM2 as at 18-Feb-2023

- Extent loss on this day 2k which is 11 k more than the average loss on this day (of the last 10 years) of 13k,
- Extent gain from minimum on this date is 9,132 k, which is 509 k, 5.3% less than the 10 year average of 9,641 k.

- Extent is 3th lowest in the 44 year satellite record.

- Extent is  116 k LESS than 2021,
- Extent is  300 k LESS than 2020,
- Extent is  254 k MORE than  2018,
- Extent is  74 k LESS than 2017
- Extent is  485 k LESS than 2012
- Extent is  1,742 k LESS than the 1980’s Average
- Extent is  215 k LESS than the 2010's Average.

On average 95.4% of extent gains from minimum to maximum done, and 19 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.03 million km2, 0.15 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #161 on: February 19, 2023, 03:00:39 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,615,588 KM2 as at 18-Feb-2023

- Area loss on this day 14k, which is 39 k less than the average gain on this day (of the last 10 years) of 25k,
- Area gain from minimum on this date is 9,398 k, which is 258 k, 2.7% less than the 10 year average of 9,656 k.

- Area is at position #5 in the satellite record (#1=lowest)

- Area is  170 k LESS than 2022,
- Area is  193 k LESS than 2021,
- Area is  290 k LESS than 2020,
- Area is  343 k MORE than 2017
- Area is  1,052 k LESS than the 1980’s Average
- Area is  56 k LESS than the 2010's Average
_____________________________________________
On average 95.8% of Area gains from minimum to maximum done, and 21 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.12 million km2, 0.42 million km2 above the March 2016 record low maximum of 12.63 million km2, and 10th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #162 on: February 20, 2023, 05:13:52 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 19th, 2023:
      13,714,810 km2, an increase of 58,598 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #163 on: February 20, 2023, 09:42:32 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,714,810 KM2 as at 19-Feb-2023

- Extent gain on this day 59k which is 29 k more than the average gain on this day (of the last 10 years) of 30k,
- Extent gain from minimum on this date is 9,191 k, which is 474 k, 4.9% less than the 10 year average of 9,665 k.

- Extent is 3th lowest in the 44 year satellite record.

- Extent is  33 k LESS than 2021,
- Extent is  270 k LESS than 2020,
- Extent is  275 k MORE than  2018,
- Extent is  64 k LESS than 2017
- Extent is  419 k LESS than 2012
- Extent is  1,713 k LESS than the 1980’s Average
- Extent is  179 k LESS than the 2010's Average.

On average 95.7% of extent gains from minimum to maximum done, and 18 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.06 million km2, 0.18 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #164 on: February 20, 2023, 01:47:02 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,588,812 KM2 as at 19-Feb-2023

- Area loss on this day 27k, which is 46 k less than the average gain on this day (of the last 10 years) of 19k,
- Area gain from minimum on this date is 9,371 k, which is 303 k, 3.1% less than the 10 year average of 9,675 k.

- Area is at position #5 in the satellite record (#1=lowest)

- Area is  237 k LESS than 2022,
- Area is  197 k LESS than 2021,
- Area is  331 k LESS than 2020,
- Area is  227 k MORE than 2017
- Area is  1,091 k LESS than the 1980’s Average
- Area is  107 k LESS than the 2010's Average
_____________________________________________
On average 96.0% of Area gains from minimum to maximum done, and 20 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.07 million km2, 0.37 million km2 above the March 2016 record low maximum of 12.63 million km2, and 8th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #165 on: February 20, 2023, 06:23:36 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average): some graphs

Perpiheral seas area 100k below the 2010's average,
High Arctic seas area 15k below the 2010's average.

Barents Sea ice area and extent both lowest in the satellite record, area for 23 days and extent for 20 days so far this year. Winter sea ice continues its decline.

click images to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #166 on: February 21, 2023, 04:49:34 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 20th, 2023:
      13,768,963 km2, an increase of 54,153 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #167 on: February 21, 2023, 07:06:39 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,768,963 KM2 as at 20-Feb-2023

- Extent gain on this day 54k which is 8 k more than the average gain on this day (of the last 10 years) of 46k,
- Extent gain from minimum on this date is 9,245 k, which is 456 k, 4.7% less than the 10 year average of 9,701 k.

- Extent is 4th lowest in the 44 year satellite record.

- Extent is  17 k MORE than 2021,
- Extent is  330 k LESS than 2020,
- Extent is  289 k MORE than  2018,
- Extent is  9 k LESS than 2017
- Extent is  330 k LESS than 2012
- Extent is  1,686 k LESS than the 1980’s Average
- Extent is  144 k LESS than the 2010's Average.

On average 96.2% of extent gains from minimum to maximum done, and 17 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.07 million km2, 0.19 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #168 on: February 21, 2023, 02:22:48 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,576,973 KM2 as at 20-Feb-2023

- Area loss on this day 12k, which is 28 k less than the average gain on this day (of the last 10 years) of 16k,
- Area gain from minimum on this date is 9,360 k, which is 331 k, 3.4% less than the 10 year average of 9,690 k.

- Area is at position #4 in the satellite record (#1=lowest)

- Area is  300 k LESS than 2022,
- Area is  168 k LESS than 2021,
- Area is  364 k LESS than 2020,
- Area is  148 k MORE than 2017
- Area is  1,120 k LESS than the 1980’s Average
- Area is  135 k LESS than the 2010's Average
_____________________________________________
On average 96.1% of Area gains from minimum to maximum done, and 19 days to maximum

Projections. (Table NSIDC-Arctic-Area1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.04 million km2, 0.34 million km2 above the March 2016 record low maximum of 12.63 million km2, and 7th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #169 on: February 22, 2023, 05:04:14 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 21st, 2023:
      13,826,011 km2, an increase of 57,048 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #170 on: February 22, 2023, 11:06:16 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,826,011 KM2 as at 21-Feb-2023

- Extent gain on this day 57k which is 18 k more than the average gain on this day (of the last 10 years) of 39k,
- Extent gain from minimum on this date is 9,302 k, which is 435 k, 4.5% less than the 10 year average of 9,737 k.

- Extent is 6th lowest in the 44 year satellite record.

- Extent is  66 k MORE than 2021,
- Extent is  356 k LESS than 2020,
- Extent is  269 k MORE than  2018,
- Extent is  41 k MORE than 2017
- Extent is  265 k LESS than 2012
- Extent is  1,658 k LESS than the 1980’s Average
- Extent is  112 k LESS than the 2010's Average.

On average 96.6% of extent gains from minimum to maximum done, and 16 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.09 million km2, 0.21 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #171 on: February 22, 2023, 02:18:17 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,591,797 KM2 as at 21-Feb-2023

- Area gain on this day 15k, which is 2 k less than the average gain on this day (of the last 10 years) of 17k,
- Area gain from minimum on this date is 9,374 k, which is 333 k, 3.4% less than the 10 year average of 9,708 k.

- Area is at position #4 in the satellite record (#1=lowest)

- Area is  350 k LESS than 2022,
- Area is  134 k LESS than 2021,
- Area is  379 k LESS than 2020,
- Area is  137 k MORE than 2017
- Area is  1,119 k LESS than the 1980’s Average
- Area is  133 k LESS than the 2010's Average
_____________________________________________
On average 96.3% of Area gains from minimum to maximum done, and 18 days to maximum

Projections. (Table NSIDC-Arctic-Area-1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.03 million km2, 0.34 million km2 above the March 2016 record low maximum of 12.63 million km2, and 7th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #172 on: February 23, 2023, 04:48:59 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 22nd, 2023:
      13,866,421 km2, an increase of 40,410 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #173 on: February 23, 2023, 07:39:54 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,866,421 KM2 as at 22-Feb-2023

- Extent gain on this day 40k which is 18 k more than the average gain on this day (of the last 10 years) of 22k,
- Extent gain from minimum on this date is 9,342 k, which is 411 k, 4.2% less than the 10 year average of 9,754 k.

- Extent is 6th lowest in the 44 year satellite record.

- Extent is  111 k MORE than 2021,
- Extent is  360 k LESS than 2020,
- Extent is  270 k MORE than  2018,
- Extent is  54 k MORE than 2017
- Extent is  213 k LESS than 2012
- Extent is  1,646 k LESS than the 1980’s Average
- Extent is  93 k LESS than the 2010's Average.

On average 96.7% of extent gains from minimum to maximum done, and 15 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.11 million km2, 0.23 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #174 on: February 23, 2023, 03:04:45 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,608,989 KM2 as at 22-Feb-2023

- Area gain on this day 17k, which is 2 k less than the average gain on this day (of the last 10 years) of 19k,
- Area gain from minimum on this date is 9,392 k, which is 335 k, 3.4% less than the 10 year average of 9,727 k.

- Area is at position #5 in the satellite record (#1=lowest)

- Area is  392 k LESS than 2022,
- Area is  114 k LESS than 2021,
- Area is  391 k LESS than 2020,
- Area is  142 k MORE than 2017
- Area is  1,120 k LESS than the 1980’s Average
- Area is  128 k LESS than the 2010's Average
_____________________________________________
On average 96.5% of Area gains from minimum to maximum done, and 17 days to maximum

Projections. (Table NSIDC-Arctic-Area-1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.03 million km2, 0.34 million km2 above the March 2016 record low maximum of 12.63 million km2, and 7th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #175 on: February 23, 2023, 03:12:48 PM »
The Kara Sea shows again this year the increasing vulnerability of the winter sea ice there, especially in sea ice area and the resulting sea ice concentration.

& winter sea ice in the St. Lawrence is also low this year so far.
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #176 on: February 24, 2023, 05:23:41 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 23rd, 2023:
      13,839,512 km2, a drop of -26,909 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #177 on: February 24, 2023, 12:57:31 PM »
JAXA ARCTIC SEA ICE EXTENT:  13,839,512 KM2 as at 23-Feb-2023

- Extent loss on this day 27k which is 53 k less than the average gain on this day (of the last 10 years) of 26k,
- Extent gain from minimum on this date is 9,316 k, which is 450 k, 4.6% less than the 10 year average of 9,765 k.

- Extent is 6th lowest in the 44 year satellite record.

- Extent is  91 k MORE than 2021,
- Extent is  332 k LESS than 2020,
- Extent is  177 k MORE than  2018,
- Extent is  0 k MORE than 2017
- Extent is  311 k LESS than 2012
- Extent is  1,695 k LESS than the 1980’s Average
- Extent is  143 k LESS than the 2010's Average.

On average 97.2% of extent gains from minimum to maximum done, and 14 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.06 million km2, 0.18 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #178 on: February 24, 2023, 04:06:26 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,639,423 KM2 as at 23-Feb-2023

- Area gain on this day 30k, which is 10 k more than the average gain on this day (of the last 10 years) of 20k,
- Area gain from minimum on this date is 9,422 k, which is 325 k, 3.3% less than the 10 year average of 9,747 k.

- Area is at position #6 in the satellite record (#1=lowest)

- Area is  402 k LESS than 2022,
- Area is  88 k LESS than 2021,
- Area is  385 k LESS than 2020,
- Area is  148 k MORE than 2017
- Area is  1,108 k LESS than the 1980’s Average
- Area is  112 k LESS than the 2010's Average
_____________________________________________
On average 96.7% of Area gains from minimum to maximum done, and 16 days to maximum

Projections. (Table NSIDC-Arctic-Area-1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.04 million km2, 0.35 million km2 above the March 2016 record low maximum of 12.63 million km2, and 7th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #179 on: February 25, 2023, 04:52:23 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 24th, 2023:
      13,829,526 km2, a drop of -9,986 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent

P.S. I am going to travel from February 25 to February 28, I will not post on these days. I appreciate if someone else posts around this time (4:30 AM ASIF time). And of course, there are always Gero's posts, which are much appreciated.
« Last Edit: February 25, 2023, 01:33:34 PM by Juan C. García »
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #180 on: February 25, 2023, 11:31:44 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,829,526 KM2 as at 24-Feb-2023

- Extent loss on this day 10k which is 14 k more than the average loss on this day (of the last 10 years) of 24k,
- Extent gain from minimum on this date is 9,306 k, which is 465 k, 4.8% less than the 10 year average of 9,771 k.

- Extent is 6th lowest in the 44 year satellite record.

- Extent is  128 k MORE than 2021,
- Extent is  268 k LESS than 2020,
- Extent is  186 k MORE than  2018,
- Extent is  22 k MORE than 2017
- Extent is  376 k LESS than 2012
- Extent is  1,733 k LESS than the 1980’s Average
- Extent is  170 k LESS than the 2010's Average.

On average 96.9% of extent gains from minimum to maximum done, and 13 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.07 million km2, 0.20 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #181 on: February 25, 2023, 05:52:02 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,644,896 KM2 as at 24-Feb-2023

- Area gain on this day 5k, which is 10 k less than the average gain on this day (of the last 10 years) of 15k,
- Area gain from minimum on this date is 9,428 k, which is 334 k, 3.4% less than the 10 year average of 9,761 k.

- Area is at position #6 in the satellite record (#1=lowest)

- Area is  422 k LESS than 2022,
- Area is  74 k LESS than 2021,
- Area is  407 k LESS than 2020,
- Area is  142 k MORE than 2017
- Area is  1,126 k LESS than the 1980’s Average
- Area is  115 k LESS than the 2010's Average
_____________________________________________
On average 96.8% of Area gains from minimum to maximum done, and 15 days to maximum

Projections. (Table NSIDC-Arctic-Area-1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.03 million km2, 0.34 million km2 above the March 2016 record low maximum of 12.63 million km2, and 7th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #182 on: February 26, 2023, 07:32:34 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,839,917 KM2 as at 25-Feb-2023

- Extent gain on this day 10k which is 9 k more than the average gain on this day (of the last 10 years) of 1k,
- Extent gain from minimum on this date is 9,316 k, which is 463 k, 4.7% less than the 10 year average of 9,779 k.

- Extent is 5th lowest in the 44 year satellite record.

- Extent is  168 k MORE than 2021,
- Extent is  243 k LESS than 2020,
- Extent is  201 k MORE than  2018,
- Extent is  67 k MORE than 2017
- Extent is  402 k LESS than 2012
- Extent is  1,739 k LESS than the 1980’s Average
- Extent is  161 k LESS than the 2010's Average.

On average 97.0% of extent gains from minimum to maximum done, and 12 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.09 million km2, 0.21 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 5th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #183 on: February 26, 2023, 02:19:38 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,641,746 KM2 as at 25-Feb-2023

- Area loss on this day 3k, which is 16 k less than the average gain on this day (of the last 10 years) of 13k,
- Area gain from minimum on this date is 9,424 k, which is 350 k, 3.6% less than the 10 year average of 9,775 k.

- Area is at position #5 in the satellite record (#1=lowest)

- Area is  432 k LESS than 2022,
- Area is  73 k LESS than 2021,
- Area is  419 k LESS than 2020,
- Area is  123 k MORE than 2017
- Area is  1,147 k LESS than the 1980’s Average
- Area is  131 k LESS than the 2010's Average
_____________________________________________
On average 97.0% of Area gains from minimum to maximum done, and 14 days to maximum

Projections. (Table NSIDC-Arctic-Area-1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.02 million km2, 0.32 million km2 above the March 2016 record low maximum of 12.63 million km2, and 7th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #184 on: February 27, 2023, 06:28:30 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,910,609 KM2 as at 26-Feb-2023

- Extent gain on this day 71k which is 50 k more than the average gain on this day (of the last 10 years) of 21k,
- Extent gain from minimum on this date is 9,387 k, which is 417 k, 4.3% less than the 10 year average of 9,804 k.

- Extent is 7th lowest in the 44 year satellite record.

- Extent is  177 k MORE than 2021,
- Extent is  258 k LESS than 2020,
- Extent is  234 k MORE than  2018,
- Extent is  147 k MORE than 2017
- Extent is  396 k LESS than 2012
- Extent is  1,679 k LESS than the 1980’s Average
- Extent is  100 k LESS than the 2010's Average.

On average 97.3% of extent gains from minimum to maximum done, and 11 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.13 million km2, 0.26 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 7th lowest in the satellite record.
_____________________
Sea ice extent on this day has exceeded the maxima in 2017 & 2018 of 13.88 & 13.89 million km2 respectively.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #185 on: February 27, 2023, 11:44:43 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,641,264 KM2 as at 26-Feb-2023

- Area loss on this day 1k, which is 5 k less than the average gain on this day (of the last 10 years) of 4k,
- Area gain from minimum on this date is 9,424 k, which is 355 k, 3.6% less than the 10 year average of 9,779 k.

- Area is at position #6 in the satellite record (#1=lowest)

- Area is  395 k LESS than 2022,
- Area is  79 k LESS than 2021,
- Area is  425 k LESS than 2020,
- Area is  109 k MORE than 2017
- Area is  1,154 k LESS than the 1980’s Average
- Area is  138 k LESS than the 2010's Average
_____________________________________________
On average 97.0% of Area gains from minimum to maximum done, and 13 days to maximum

Projections. (Table NSIDC-Arctic-Area-1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.02 million km2, 0.32 million km2 above the March 2016 record low maximum of 12.63 million km2, and 7th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

binntho

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Re: 2023 Sea ice area and extent data
« Reply #186 on: February 28, 2023, 08:15:36 AM »
Juan is travelling, hopefully back tomorrow. Gero has been posting the numbers as usual, but here are the Jaxa numbers for the last three days.

Another 32.000 km2 to breach 14 million - could well happen tomorrow!

DateExtentChange
2513839917  10391
2613910609  70692
2713968157  57548


because a thing is eloquently expressed it should not be taken to be as necessarily true
St. Augustine, Confessions V, 6

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #187 on: February 28, 2023, 11:18:29 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,968,157 KM2 as at 27-Feb-2023

- Extent gain on this day 58k which is 42 k more than the average gain on this day (of the last 10 years) of 16k,
- Extent gain from minimum on this date is 9,444 k, which is 374 k, 3.8% less than the 10 year average of 9,818 k.

- Extent is 9th lowest in the 44 year satellite record.

- Extent is  126 k MORE than 2021,
- Extent is  327 k LESS than 2020,
- Extent is  287 k MORE than  2018,
- Extent is  249 k MORE than 2017
- Extent is  344 k LESS than 2012
- Extent is  1,625 k LESS than the 1980’s Average
- Extent is  29 k LESS than the 2010's Average.

On average 97.5% of extent gains from minimum to maximum done, and 10 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.17 million km2, 0.29 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 7th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #188 on: February 28, 2023, 01:54:23 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,653,118 KM2 as at 27-Feb-2023

- Area gain on this day 12k, which is 14 k more than the average loss on this day (of the last 10 years) of 2k,
- Area gain from minimum on this date is 9,436 k, which is 341 k, 3.5% less than the 10 year average of 9,776 k.

- Area is at position #6 in the satellite record (#1=lowest)

- Area is  338 k LESS than 2022,
- Area is  78 k LESS than 2021,
- Area is  425 k LESS than 2020,
- Area is  132 k MORE than 2017
- Area is  1,158 k LESS than the 1980’s Average
- Area is  126 k LESS than the 2010's Average
_____________________________________________
On average 97.0% of Area gains from minimum to maximum done, and 12 days to maximum

Projections. (Table NSIDC-Arctic-Area-1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.03 million km2, 0.33 million km2 above the March 2016 record low maximum of 12.63 million km2, and 7th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #189 on: March 01, 2023, 05:09:22 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

February 28th, 2023:
      13,981,505 km2, an increase of 13,348 km2.

For comments, see the first post in this thread.
Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

jdallen

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Re: 2023 Sea ice area and extent data
« Reply #190 on: March 01, 2023, 07:12:24 AM »
Query - we once upon a time (I thought) had data broken down by sea, and (a) mask(s) to apply to gridded data from <mumble><mumble> source?

Could someone help my addled brain and redirect me to the correct location?
This space for Rent.

icy voyeur2

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Re: 2023 Sea ice area and extent data
« Reply #191 on: March 01, 2023, 08:02:27 AM »
Query - we once upon a time (I thought) had data broken down by sea, and (a) mask(s) to apply to gridded data from <mumble><mumble> source?

Could someone help my addled brain and redirect me to the correct location?

https://sites.google.com/view/arctic-sea-ice/home/cryosat-regional

There are additional sources for regional plots

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #192 on: March 01, 2023, 08:41:42 AM »
JAXA ARCTIC SEA ICE EXTENT:  13,981,505 KM2 as at 28-Feb-2023

- Extent gain on this day 13k which is 8 k less than the average gain on this day (of the last 10 years) of 21k,
- Extent gain from minimum on this date is 9,458 k, which is 388 k, 3.9% less than the 10 year average of 9,845 k.

- Extent is 9th lowest in the 44 year satellite record.

- Extent is  39 k MORE than 2021,
- Extent is  367 k LESS than 2020,
- Extent is  254 k MORE than  2018,
- Extent is  231 k MORE than 2017
- Extent is  360 k LESS than 2012
- Extent is  1,598 k LESS than the 1980’s Average
- Extent is  36 k LESS than the 2010's Average.

On average 97.7% of extent gains from minimum to maximum done, and 9 days to maximum.

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2023 of 14.16 million km2, 0.28 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 7th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

oren

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Re: 2023 Sea ice area and extent data
« Reply #193 on: March 01, 2023, 08:49:09 AM »
Query - we once upon a time (I thought) had data broken down by sea, and (a) mask(s) to apply to gridded data from <mumble><mumble> source?

Could someone help my addled brain and redirect me to the correct location?
We used to have the useful Arctischepinguin site by Wipneus, but Google did some bad stuff and the site shut down. Fortunately we gained two new sources of regional data, including charts and downloadable CSVs:
https://sites.google.com/view/arctic-sea-ice/home for various volume measures, by the resident wizard Steven.
https://sites.google.com/view/sea-ice/startseite for extent and area data, by the esteemed seaice.de of AWI.

In addition there's also NSIDC somewhere out there, where Gero gets his regional area data from.

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #194 on: March 01, 2023, 09:16:05 AM »
Query - we once upon a time (I thought) had data broken down by sea, and (a) mask(s) to apply to gridded data from <mumble><mumble> source?

Could someone help my addled brain and redirect me to the correct location?
We used to have the useful Arctischepinguin site by Wipneus, but Google did some bad stuff and the site shut down. Fortunately we gained two new sources of regional data, including charts and downloadable CSVs:
https://sites.google.com/view/arctic-sea-ice/home for various volume measures, by the resident wizard Steven.
https://sites.google.com/view/sea-ice/startseite for extent and area data, by the esteemed seaice.de of AWI.

In addition there's also NSIDC somewhere out there, where Gero gets his regional area data from.
The somewhere for NSIDC data is @ https://nsidc.org/arcticseaicenews/sea-ice-tools/
Scroll down for the list of excel files available to download. NSIDC usually updates them every day at around mid-day (sometimes much later).

Steven's website (https://sites.google.com/view/arctic-sea-ice) also has a page for CryoSat-SMOS volume - https://sites.google.com/view/arctic-sea-ice/home/cryosat-regional?authuser=0

At the bottom of each page is the link to download data
"Para a Causa do Povo a Luta Continua!"
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"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #195 on: March 01, 2023, 11:54:54 AM »
JAXA ARCTIC SEA ICE EXTENT:

Here is a look at the 365 day trailing average.

On every day in February 2023 daily extent remained below that of Feb '22, and as a result the 365 day trailing average reduced by 23k in the month.

However, this average is still 0.45 million km2 above the record low of March 2021, and 0.50 million km2 above the long-term linear trend

If daily sea ice extent gains and losses for the remainder of the year are at the 10 year average, the 365 day trailing average will continue to decline, but still end the year about 0.3 million km2 above the long-term linear trend.

click images to enlarge
"Para a Causa do Povo a Luta Continua!"
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gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #196 on: March 01, 2023, 12:09:08 PM »
JAXA ARCTIC SEA ICE EXTENT: February 2023 Monthly Average

The Feb '23 daily sea ice extent average is 13.66 million km2,
- 4th lowest in the satellite record,
- 0.12 million km2 above the long-term linear trend, and
- 0.33 million km2 below the Feb'22 average.

If daily sea ice changes for the remainder of the year are at the previous 10 years average, the annual average would be 9.99 million KM2, 
- 7th lowest in the satellite record,
- 0.29 million km2 above the long-term linear trend, and
- 0.20 million km2 below the 2022 average.

click images to enlarge
"Para a Causa do Povo a Luta Continua!"
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"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #197 on: March 01, 2023, 03:50:59 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):  12,664,055 KM2 as at 28-Feb-2023

- Area gain on this day 11k, which is 11 k more than the average gain on this day (of the last 10 years) of 0k,
- Area gain from minimum on this date is 9,447 k, which is 330 k, 3.4% less than the 10 year average of 9,777 k.

- Area is at position #6 in the satellite record (#1=lowest)

- Area is  288 k LESS than 2022,
- Area is  84 k LESS than 2021,
- Area is  451 k LESS than 2020,
- Area is  179 k MORE than 2017
- Area is  1,157 k LESS than the 1980’s Average
- Area is  117 k LESS than the 2010's Average
_____________________________________________
On average 97.0% of Area gains from minimum to maximum done, and 11 days to maximum

Projections. (Table NSIDC-Arctic-Area-1)

Average remaining Area gain (of the last 10 years) would produce a maximum in March 2023 of 13.04 million km2, 0.35 million km2 above the March 2016 record low maximum of 12.63 million km2, and 7th lowest in the 44 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge
"Para a Causa do Povo a Luta Continua!"
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"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: 2023 Sea ice area and extent data
« Reply #198 on: March 01, 2023, 04:01:33 PM »
NSIDC ARCTIC SEA ICE AREA (5-day trailing average):

Peripheral Sea sea ice area remains beow the 2010's average while in the High Arctic sea ice area is above the 2010's average. (1st 2 images)

The Barents sea ice area and extent is falling again.

If you look at the Brents sea ice extent graph you will see that the date at which freezing gets properly underway in the 2010's is more than one month later than in the 1980's, while the date at which sea ice extent is at or below 10% of maximum is more than one month earlier than in the 1980's.
I.E. Not only does the Barents have greatly reduced winter sea ice but also the Barents freezing season is nearly 3 months shorter while the season when the Barents is more than 90% ice free is nearly 3 months longer. (images 3 & 4)

click images to enlarge
"Para a Causa do Povo a Luta Continua!"
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"Damn, I wanted to see what happened next" (Epitaph)

Juan C. García

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Re: 2023 Sea ice area and extent data
« Reply #199 on: March 02, 2023, 05:18:24 AM »
Another 32.000 km2 to breach 14 million - could well happen tomorrow!

DateExtentChange
2513839917  10391
2613910609  70692
2713968157  57548



Sorry, Today I don't have Office. I'll post like I usually do it tomorrow.

You were almost right, binntho! You just miss it on one day!

14.01 million km2 on March 1st, 2023.

Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.