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gerontocrat

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Re: 2020 Sea ice area and extent data
« Reply #1600 on: September 20, 2020, 11:15:36 AM »
JAXA ARCTIC SEA ICE EXTENT:  3,723,586 KM2 as at 19-Sep-2020

- Extent LOSS on this day 22k, 51 k less than the average gain on this day (of the last 10 years) of 29k,
- Extent gain from minimum on this date is 169 k, which is 87 k, 105.8%, more than the 10 year average of 82 k.
- Extent is at position #2 in the satellite record
- Extent is  287 k LESS than 2019,
- Extent is  695 k LESS than 2016,
- Extent is  353 k MORE than 2012
- Extent is  375 k LESS than 2007
_____________________________________________
On average 0.8% of extent gains  from minimum to maximum done, and 173 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.51 million km2, 0.37 million km2 below the March 2017 record low maximum of 13.88 million km2.
______________________________
N.B. Click  on image for full-size
"Para a Causa do Povo a Luta Continua!"
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gerontocrat

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Re: 2020 Sea ice area and extent data
« Reply #1601 on: September 20, 2020, 02:24:20 PM »
NSIDC Total Area as at 19-Sep-2020 (5 day trailing average) 2,666,410 KM2         
         
Total Area         
 2,666,410    km2      
-583,011    km2   <   2010's average.
-461,471    km2   <   2019
-1,452,088    km2   <   2000's average.
         
Total Change    28    k   gain
Peripheral Seas    8    k   gain
Central Seas___    20    k   gain
         
Peripheral Seas         
Okhotsk______    0    k   gain
Bering _______    0    k   gain
Hudson Bay___   -0    k   loss
Baffin  Bay____   -0    k   loss
St Lawrence___    -    k   loss
Greenland____    8    k   gain
Barents ______   -0    k   loss
         
Central Arctic  Ocean Seas         
Chukchi______    0    k   gain
Beaufort_____    6    k   gain
CAA_________   -2    k   loss
East Siberian__   -1    k   loss
Central Arctic_    18    k   gain
Laptev_______   -0    k   loss
Kara_________   -0    k   loss
         
Sea ice area gain on this day 28 k, 6 k more than the 2010's average gain of 22 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 583 k less than the 2010's average         
- 2020 Area is 1,452 k less than the 2000's average         
- 2020 Area is 135 k less than 2016         
- 2020 Area is 461 k less than 2019          
- 2020 Area is 354 k more than 2012      
___________________________________________         
NSIDC Total EXTENT as at 19-Sep-2020 (5 day trailing average) 3,790,945 KM2         
         
NSIDC Sea ice EXTENT gain on this day 11 k, 2 k more than the 2010's average gain of 9k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 736 k less than the 2010's average         
- 2020 EXTENT is 1,745 k less than the 2000's average         
- 2020 EXTENT is 605 k less than 2016         
- 2020 EXTENT is 407 k less than 2019          
- 2020 EXTENT is 373 k more than 2012
_________________________________________
No surprises today. I thinks its time to look at what the rest of the year might bring. Tomorrow.         
___________________________________________         
Note: Click an image for full-size         
"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: 2020 Sea ice area and extent data
« Reply #1602 on: September 21, 2020, 05:34:59 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 20th, 2020:
     3,723,271 km2, a small drop of -315 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
« Last Edit: September 21, 2020, 05:54:52 AM 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: 2020 Sea ice area and extent data
« Reply #1603 on: September 21, 2020, 10:56:37 AM »
JAXA ARCTIC SEA ICE EXTENT:  3,723,271 KM2 as at 20-Sep-2020

- Extent gain on this day 0k, 39 k less than the average gain on this day (of the last 10 years) of 39k,

EDIT:- whoops
- Extent gain from minimum on this date is 168 k, which is 16 k, 9% less than the 10 year average of 184 k.

- Extent is at position #2 in the satellite record
- Extent is  331 k LESS than 2019,
- Extent is  735 k LESS than 2016,
- Extent is  296 k MORE than 2012
- Extent is  392 k LESS than 2007
_____________________________________________
On average 0.8% of extent gains  from minimum to maximum done, and 172 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.47 million km2, 0.41 million km2 below the March 2017 record low maximum of 13.88 million km2.
_____________________________________________
Is a 22k extent loss followed by zero change a hint that refreeze may be slowed for a month or three? 
______________________________
N.B. Click  on image for full-size
« Last Edit: September 22, 2020, 09:44:07 AM by gerontocrat »
"Para a Causa do Povo a Luta Continua!"
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gerontocrat

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Re: 2020 Sea ice area and extent data
« Reply #1604 on: September 21, 2020, 02:31:56 PM »
NSIDC Total Area as at 20-Sep-2020 (5 day trailing average) 2,718,365 KM2         
         
Total Area         
 2,718,365    km2      
-554,510    km2   <   2010's average.
-487,363    km2   <   2019
-1,417,217    km2   <   2000's average.
         
Total Change    52    k   gain
Peripheral Seas    6    k   gain
Central Seas___    45    k   gain
         
Peripheral Seas         
Okhotsk______    0    k   gain
Bering _______    0    k   gain
Hudson Bay___    0    k   gain
Baffin  Bay____   -1    k   loss
St Lawrence___    -    k   loss
Greenland____    7    k   gain
Barents ______    0    k   gain
         
Central Arctic  Ocean Seas         
Chukchi______   -0    k   loss
Beaufort_____    7    k   gain
CAA_________    0    k   gain
East Siberian__   -2    k   loss
Central Arctic_    40    k   gain
Laptev_______   -0    k   loss
Kara_________    1    k   gain
         
Sea ice area gain on this day 52 k, 29 k more than the 2010's average gain of 23 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 555 k less than the 2010's average         
- 2020 Area is 1,417 k less than the 2000's average         
- 2020 Area is 95 k less than 2016         
- 2020 Area is 487 k less than 2019          
- 2020 Area is 359 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 20-Sep-2020 (5 day trailing average) 3,812,841 KM2         
         
NSIDC Sea ice EXTENT gain on this day 22 k, 7 k more than the 2010's average gain of 15k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 730 k less than the 2010's average         
- 2020 EXTENT is 1,730 k less than the 2000's average         
- 2020 EXTENT is 614 k less than 2016         
- 2020 EXTENT is 398 k less than 2019          
- 2020 EXTENT is 356 k more than 2012         
___________________________________________         
Note: Click an image for full-size         
"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)

arPAN6517

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Re: 2020 Sea ice area and extent data
« Reply #1605 on: September 21, 2020, 07:23:43 PM »
Hi gerontocrat, where do you get the daily NSIDC area data?  I found all the extent data here https://nsidc.org/arcticseaicenews/sea-ice-tools/ but cannot find the area data even in any of my google searches.

Juan C. García

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Re: 2020 Sea ice area and extent data
« Reply #1606 on: September 22, 2020, 05:37:01 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 21st, 2020:
     3,750,978 km2, an increase of 27,707 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
« Last Edit: September 22, 2020, 05:49:20 AM 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: 2020 Sea ice area and extent data
« Reply #1607 on: September 22, 2020, 09:38:37 AM »
JAXA ARCTIC SEA ICE EXTENT:  3,750,978 KM2 as at 21-Sep-2020

- Extent gain on this day 28k, 2 k less than the average gain on this day (of the last 10 years) of 30k,
- Extent gain from minimum on this date is 196 k, which is 18 k, 8% less than the 10 year average of 214 k.
- Extent is at position #2 in the satellite record
- Extent is  341 k LESS than 2019,
- Extent is  769 k LESS than 2016,
- Extent is  310 k MORE than 2012
- Extent is  351 k LESS than 2007
_____________________________________________
On average 0.8% of extent gains  from minimum to maximum done, and 171 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.47 million km2, 0.41 million km2 below the March 2017 record low maximum of 13.88 million km2.
______________________________
N.B. Click  on image for full-size
"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: 2020 Sea ice area and extent data
« Reply #1608 on: September 22, 2020, 02:16:55 PM »
NSIDC Total Area as at 21-Sep-2020 (5 day trailing average) 2,780,711 KM2         
         
Total Area         
 2,780,711    km2      
-517,517    km2   <   2010's average.
-495,650    km2   <   2019
-1,376,989    km2   <   2000's average.
         
Total Change    62    k   gain
Peripheral Seas    6    k   gain
Central Seas___    56    k   gain
         
Peripheral Seas         
Okhotsk______    0    k   gain
Bering _______   -0    k   loss
Hudson Bay___   -0    k   loss
Baffin  Bay____    1    k   gain
St Lawrence___    -    k   loss
Greenland____    6    k   gain
Barents ______   -0    k   loss
         
Central Arctic  Ocean Seas         
Chukchi______   -0    k   loss
Beaufort_____    11    k   gain
CAA_________    2    k   gain
East Siberian__   -2    k   loss
Central Arctic_    45    k   gain
Laptev_______    0    k   gain
Kara_________    0    k   gain
         
Sea ice area gain on this day 62 k, 37 k more than the 2010's average gain of 25 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 518 k less than the 2010's average         
- 2020 Area is 1,377 k less than the 2000's average         
- 2020 Area is 60 k less than 2016         
- 2020 Area is 496 k less than 2019          
- 2020 Area is 374 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 21-Sep-2020 (5 day trailing average) 3,837,905 KM2         
         
NSIDC Sea ice EXTENT gain on this day 25 k, 3 k more than the 2010's average gain of 22k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 726 k less than the 2010's average         
- 2020 EXTENT is 1,724 k less than the 2000's average         
- 2020 EXTENT is 635 k less than 2016         
- 2020 EXTENT is 392 k less than 2019          
- 2020 EXTENT is 332 k more than 2012   
_________________________________________
About 75% of the very high area gain is from the Central Arctic Sea.      
___________________________________________         
Note: Click an image for full-size         
"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: 2020 Sea ice area and extent data
« Reply #1609 on: September 22, 2020, 02:21:18 PM »
Central Arctic Sea extent is increasingly moderately, area almost vertically.
"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: 2020 Sea ice area and extent data
« Reply #1610 on: September 23, 2020, 07:10:58 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 22nd, 2020:
     3,813,753 km2, an increase of  62,775 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
« Last Edit: September 23, 2020, 07:17:40 AM 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: 2020 Sea ice area and extent data
« Reply #1611 on: September 23, 2020, 12:43:02 PM »
JAXA ARCTIC SEA ICE EXTENT:  3,813,753 KM2 as at 22-Sep-2020

- Extent gain on this day 63k, 31 k more than the average gain on this day (of the last 10 years) of 32k,
- Extent gain from minimum on this date is 259 k, which is 12 k, 5% more than the 10 year average of 247 k.
- Extent is at position #2 in the satellite record
- Extent is  299 k LESS than 2019,
- Extent is  798 k LESS than 2016,
- Extent is  377 k MORE than 2012
- Extent is  267 k LESS than 2007
_____________________________________________
On average 2.5% of extent gains  from minimum to maximum done, and 170 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.50 million km2, 0.38 million km2 below the March 2017 record low maximum of 13.88 million km2.
_____________________________________________
At this stage projections of the maximum are made with zero confidence
______________________________
N.B. Click  on image for full-size
"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: 2020 Sea ice area and extent data
« Reply #1612 on: September 23, 2020, 12:47:44 PM »
Hi gerontocrat, where do you get the daily NSIDC area data?  I found all the extent data here https://nsidc.org/arcticseaicenews/sea-ice-tools/ but cannot find the area data even in any of my google searches.
You need to ask Nico Sun - posting as Tealight.
He posts it on a graph every day at  https://cryospherecomputing.tk/
"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: 2020 Sea ice area and extent data
« Reply #1613 on: September 23, 2020, 04:08:04 PM »
NSIDC Total Area as at 22-Sep-2020 (5 day trailing average) 2,843,596 KM2         
         
Total Area         
 2,843,596    km2      
-478,001    km2   <   2010's average.
-484,037    km2   <   2019
-1,341,651    km2   <   2000's average.
         
Total Change    63    k   gain
Peripheral Seas    5    k   gain
Central Seas___    57    k   gain
         
Peripheral Seas         
Okhotsk______    0    k   gain
Bering _______    0    k   gain
Hudson Bay___    1    k   gain
Baffin  Bay____    2    k   gain
St Lawrence___    -    k   loss
Greenland____    2    k   gain
Barents ______    0    k   gain
         
Central Arctic  Ocean Seas         
Chukchi______    0    k   gain
Beaufort_____    2    k   gain
CAA_________    6    k   gain
East Siberian__    3    k   gain
Central Arctic_    47    k   gain
Laptev_______    0    k   gain
Kara_________    0    k   gain
         
Sea ice area gain on this day 63 k, 40 k more than the 2010's average gain of 23 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 478 k less than the 2010's average         
- 2020 Area is 1,342 k less than the 2000's average         
- 2020 Area is 43 k less than 2016         
- 2020 Area is 484 k less than 2019          
- 2020 Area is 394 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 22-Sep-2020 (5 day trailing average) 3,874,733 KM2         
         
NSIDC Sea ice EXTENT gain on this day 37 k, 12 k more than the 2010's average gain of 25k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 715 k less than the 2010's average         
- 2020 EXTENT is 1,709 k less than the 2000's average         
- 2020 EXTENT is 662 k less than 2016         
- 2020 EXTENT is 377 k less than 2019          
- 2020 EXTENT is 330 k more than 2012
_____________________________________
Once again the high area gain is about 75% from the Central Arctic Sea.          
___________________________________________         
Note: Click an image for full-size         
"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: 2020 Sea ice area and extent data
« Reply #1614 on: September 24, 2020, 05:33:45 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 23rd, 2020:
     3,868,967 km2, an increase of 55,214 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
« Last Edit: September 24, 2020, 05:44:57 AM 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: 2020 Sea ice area and extent data
« Reply #1615 on: September 24, 2020, 10:42:51 AM »
JAXA ARCTIC SEA ICE EXTENT:  3,868,967 KM2 as at 23-Sep-2020

- Extent gain on this day 55k, 13 k more than the average gain on this day (of the last 10 years) of 42k,
- Extent gain from minimum on this date is 314 k, which is 33 k, 12% more than the 10 year average of 282 k.
- Extent is at position #2 in the satellite record
- Extent is  291 k LESS than 2019,
- Extent is  838 k LESS than 2016,
- Extent is  394 k MORE than 2012
- Extent is  200 k LESS than 2007
_____________________________________________
On average 2.8% of extent gains  from minimum to maximum done, and 169 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.51 million km2, 0.36 million km2 below the March 2017 record low maximum of 13.88 million km2.
____________________________________________
N.B. Click  on image for full-size
"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: 2020 Sea ice area and extent data
« Reply #1616 on: September 24, 2020, 02:23:55 PM »
NSIDC Total Area as at 23-Sep-2020 (5 day trailing average) 2,900,506 KM2         
         
Total Area         
 2,900,506    km2      
-450,767    km2   <   2010's average.
-484,911    km2   <   2019
-1,312,364    km2   <   2000's average.
         
Total Change    57    k   gain
Peripheral Seas    7    k   gain
Central Seas___    50    k   gain
         
Peripheral Seas         
Okhotsk______   -0    k   loss
Bering _______   -0    k   loss
Hudson Bay___    1    k   gain
Baffin  Bay____    2    k   gain
St Lawrence___    -    k   loss
Greenland____    4    k   gain
Barents ______    0    k   gain
         
Central Arctic  Ocean Seas         
Chukchi______    1    k   gain
Beaufort_____    1    k   gain
CAA_________    7    k   gain
East Siberian__    7    k   gain
Central Arctic_    36    k   gain
Laptev_______   -0    k   loss
Kara_________   -1    k   loss
         
Sea ice area gain on this day 57 k, 27 k more than the 2010's average gain of 30 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 451 k less than the 2010's average         
- 2020 Area is 1,312 k less than the 2000's average         
- 2020 Area is 52 k less than 2016         
- 2020 Area is 485 k less than 2019          
- 2020 Area is 410 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 23-Sep-2020 (5 day trailing average) 3,920,890 KM2         
         
NSIDC Sea ice EXTENT gain on this day 46 k, 16 k more than the 2010's average gain of 30k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 698 k less than the 2010's average         
- 2020 EXTENT is 1,690 k less than the 2000's average         
- 2020 EXTENT is 691 k less than 2016         
- 2020 EXTENT is 369 k less than 2019          
- 2020 EXTENT is 341 k more than 2012
__________________________________________
over 60 percent of the high sea ice area gain is from the Central Arctic Sea sea ice gain.
Sea ice EXTENT gain is much more moderate.         
___________________________________________         
Note: Click an image for full-size         
"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: 2020 Sea ice area and extent data
« Reply #1617 on: September 24, 2020, 02:25:25 PM »
NSIDC Central Arctic Sea graphs attached
"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: 2020 Sea ice area and extent data
« Reply #1618 on: September 25, 2020, 05:32:39 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 24rd, 2020:
     3,932,519 km2, an increase of  63,552 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 11 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
« Last Edit: September 25, 2020, 06:01:24 AM 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.

Freegrass

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Re: 2020 Sea ice area and extent data
« Reply #1619 on: September 25, 2020, 05:36:41 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 24rd, 2020:
     3,932,519 km2, an increase of  63,552 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent

I am working on table and graph.
Are you working ON the table?
Or are you working on A table?  :-\
Now let's pray...

If the science don't fit our beliefs, we pray to God and cuddle up in our own delusional fantasy where everything makes sense again...

Juan C. García

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Re: 2020 Sea ice area and extent data
« Reply #1620 on: September 25, 2020, 05:44:50 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 24rd, 2020:
     3,932,519 km2, an increase of  63,552 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent

I am working on table and graph.
Are you working ON the table?
Or are you working on A table?  :-\
Both...  ;D
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.

Freegrass

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Re: 2020 Sea ice area and extent data
« Reply #1621 on: September 25, 2020, 05:52:18 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 24rd, 2020:
     3,932,519 km2, an increase of  63,552 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent

I am working on table and graph.
Are you working ON the table?
Or are you working on A table?  :-\
Both...  ;D
Working on a table that you're still working on... Now that's impressive!  ;D
Now let's pray...

If the science don't fit our beliefs, we pray to God and cuddle up in our own delusional fantasy where everything makes sense again...

gerontocrat

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Re: 2020 Sea ice area and extent data
« Reply #1622 on: September 25, 2020, 10:54:16 AM »
JAXA ARCTIC SEA ICE EXTENT:  3,932,519 KM2 as at 24-Sep-2020

- Extent gain on this day 64k, 11 k more than the average gain on this day (of the last 10 years) of 53k,
- Extent gain from minimum on this date is 378 k, which is 50 k, 15% more than the 10 year average of 327 k.
- Extent is at position #2 in the satellite record
- Extent is  302 k LESS than 2019,
- Extent is  868 k LESS than 2016,
- Extent is  412 k MORE than 2012
- Extent is  135 k LESS than 2007
_____________________________________________
On average 3.3% of extent gains  from minimum to maximum done, and 168 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.52 million km2, 0.35 million km2 below the March 2017 record low maximum of 13.88 million km2.
_____________________________________________
Not a slow refreeze - yet.
______________________________
N.B. Click  on image for full-size
"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: 2020 Sea ice area and extent data
« Reply #1623 on: September 25, 2020, 02:40:34 PM »
NSIDC Total Area as at 24-Sep-2020 (5 day trailing average) 2,940,327 KM2         
         
Total Area         
 2,940,327    km2      
-450,531    km2   <   2010's average.
-497,736    km2   <   2019
-1,301,477    km2   <   2000's average.
         
Total Change    40    k   gain
Peripheral Seas    8    k   gain
Central Seas___    32    k   gain
         
Peripheral Seas         
Okhotsk______   -0    k   loss
Bering _______   -0    k   loss
Hudson Bay___    0    k   gain
Baffin  Bay____    4    k   gain
St Lawrence___    -    k   loss
Greenland____    4    k   gain
Barents ______   -0    k   loss
         
Central Arctic  Ocean Seas         
Chukchi______    1    k   gain
Beaufort_____    6    k   gain
CAA_________    10    k   gain
East Siberian__    7    k   gain
Central Arctic_    8    k   gain
Laptev_______    0    k   gain
Kara_________   -1    k   loss
         
Sea ice area gain on this day 40 k, 0 k less than the 2010's average gain of 40 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 451 k less than the 2010's average         
- 2020 Area is 1,301 k less than the 2000's average         
- 2020 Area is 108 k less than 2016         
- 2020 Area is 498 k less than 2019          
- 2020 Area is 413 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 24-Sep-2020 (5 day trailing average) 3,984,216 KM2         
         
NSIDC Sea ice EXTENT gain on this day 63 k, 27 k more than the 2010's average gain of 36k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 671 k less than the 2010's average         
- 2020 EXTENT is 1,655 k less than the 2000's average         
- 2020 EXTENT is 709 k less than 2016         
- 2020 EXTENT is 339 k less than 2019          
- 2020 EXTENT is 372 k more than 2012         
___________________________________________         
Note: Click an image for full-size         
"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: 2020 Sea ice area and extent data
« Reply #1624 on: September 26, 2020, 05:33:10 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 25th, 2020:
     4,042,141 km2, a century break increase of 109,622 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 11 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent

I am going to be traveling on the following 3 days, so I will not make a post the next 2 days.
I appreciate if someone else makes the post.

Thanks.
« Last Edit: September 26, 2020, 05:47:16 AM 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: 2020 Sea ice area and extent data
« Reply #1625 on: September 26, 2020, 12:41:21 PM »
JAXA ARCTIC SEA ICE EXTENT:  4,042,141 KM2 as at 25-Sep-2020

- Extent gain on this day 110k, 63 k more than the average gain on this day (of the last 10 years) of 47k,
- Extent gain from minimum on this date is 487 k, which is 112 k, 30% more than the 10 year average of 375 k.
- Extent is at position #2 in the satellite record
- Extent is  218 k LESS than 2019,
- Extent is  798 k LESS than 2016,
- Extent is  502 k MORE than 2012
- Extent is  35 k LESS than 2007
_____________________________________________
On average 3.8% of extent gains  from minimum to maximum done, and 167 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.59 million km2, 0.29 million km2 below the March 2017 record low maximum of 13.88 million km2.
_____________________________________________
This above average re-freeze conceals the tale of two halves - on the Atlantic Front the ice edge retreats again to above 85 North, while on the North American side re-freeze is at maximum warp speed. (Go to the freezing season thread for details)
______________________________
N.B. Click  on image for full-size
"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: 2020 Sea ice area and extent data
« Reply #1626 on: September 26, 2020, 02:39:50 PM »
NSIDC Total Area as at 25-Sep-2020 (5 day trailing average) 2,968,104 KM2         
         
Total Area         
 2,968,104    km2      
-466,614    km2   <   2010's average.
-504,803    km2   <   2019
-1,301,325    km2   <   2000's average.
         
Total Change    28    k   gain
Peripheral Seas    11    k   gain
Central Seas___    17    k   gain
         
Peripheral Seas         
Okhotsk______   -0    k   loss
Bering _______   -0    k   loss
Hudson Bay___    0    k   gain
Baffin  Bay____    3    k   gain
St Lawrence___    -    k   loss
Greenland____    8    k   gain
Barents ______   -0    k   loss
         
Central Arctic  Ocean Seas         
Chukchi______    2    k   gain
Beaufort_____    13    k   gain
CAA_________    5    k   gain
East Siberian__    5    k   gain
Central Arctic_   -7    k   loss
Laptev_______   -0    k   loss
Kara_________   -0    k   loss
         
Sea ice area gain on this day 28 k, 16 k less than the 2010's average gain of 44 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 467 k less than the 2010's average         
- 2020 Area is 1,301 k less than the 2000's average         
- 2020 Area is 183 k less than 2016         
- 2020 Area is 505 k less than 2019          
- 2020 Area is 413 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 25-Sep-2020 (5 day trailing average) 4,042,953 KM2         
         
NSIDC Sea ice EXTENT gain on this day 59 k, 20 k more than the 2010's average gain of 39k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 651 k less than the 2010's average         
- 2020 EXTENT is 1,621 k less than the 2000's average         
- 2020 EXTENT is 727 k less than 2016         
- 2020 EXTENT is 324 k less than 2019          
- 2020 EXTENT is 398 k more than 2012   
___________________________________________         
Note: Click an image for full-size         
"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: 2020 Sea ice area and extent data
« Reply #1627 on: September 26, 2020, 02:43:39 PM »
NSIDC Data

While in total re-freeze is rapid, that is not the case in the Central Arctic Sea.
"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)

Tor Bejnar

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Re: 2020 Sea ice area and extent data
« Reply #1628 on: September 26, 2020, 09:02:44 PM »
The final 2020 extent graphic from Jim Petit: (A click will enlarge, but go to the on-line image to see it better.)

(Other of Jim's data presentations will continue, I'm sure.)
Arctic ice is healthy for children and other living things.

Stephan

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Re: 2020 Sea ice area and extent data
« Reply #1629 on: September 27, 2020, 08:13:46 AM »
JAXA Arctic Sea Ice Extent as of Sep 26, 2020.
All values in M km²

2020: 4.09 (increase of 0.05, this is roughly close to the usual increase of the last decades for this day).
2020 is 2nd in the list.

2012: 3.57
2007: 4.12
2019: 4.27
2011: 4.68
2018: 4.68
2010s: 4.72
2015: 4.74
2008: 4.76
2017: 4.84
2016: 4.92
2010: 5.07
2013: 5.18
2014: 5.21
2000s: 5.77
1990s: 6.94
1980s: 7.64
It is too late just to be concerned about Climate Change

gerontocrat

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Re: 2020 Sea ice area and extent data
« Reply #1630 on: September 27, 2020, 11:06:09 AM »
JAXA ARCTIC SEA ICE EXTENT:  4,085,786 KM2 as at 26-Sep-2020

- Extent gain on this day 44k, 4 k more than the average gain on this day (of the last 10 years) of 40k,
- Extent gain from minimum on this date is 531 k, which is 113 k, 27% more than the 10 year average of 418 k.
- Extent is at position #2 in the satellite record
- Extent is  183 k LESS than 2019,
- Extent is  834 k LESS than 2016,
- Extent is  517 k MORE than 2012
- Extent is  35 k LESS than 2007
_____________________________________________
On average 4.2% of extent gains  from minimum to maximum done, and 166 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.59 million km2, 0.29 million km2 below the March 2017 record low maximum of 13.88 million km2.
______________________________
N.B. Click  on image for full-size
"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: 2020 Sea ice area and extent data
« Reply #1631 on: September 27, 2020, 03:15:08 PM »
NSIDC Total Area as at 26-Sep-2020 (5 day trailing average) 2,998,456 KM2         
         
Total Area         
 2,998,456    km2      
-484,914    km2   <   2010's average.
-493,047    km2   <   2019
-1,300,395    km2   <   2000's average.
         
Total Change    30    k   gain
Peripheral Seas    15    k   gain
Central Seas___    15    k   gain
         
Peripheral Seas         
Okhotsk______    0    k   gain
Bering _______    -    k   loss
Hudson Bay___    0    k   gain
Baffin  Bay____    1    k   gain
St Lawrence___    -    k   loss
Greenland____    14    k   gain
Barents ______    0    k   gain
         
Central Arctic  Ocean Seas         
Chukchi______    1    k   gain
Beaufort_____    15    k   gain
CAA_________    6    k   gain
East Siberian__    4    k   gain
Central Arctic_   -13    k   loss
Laptev_______   -0    k   loss
Kara_________    1    k   gain
         
Sea ice area gain on this day 30 k, 19 k less than the 2010's average gain of 49 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 485 k less than the 2010's average         
- 2020 Area is 1,300 k less than the 2000's average         
- 2020 Area is 254 k less than 2016         
- 2020 Area is 493 k less than 2019          
- 2020 Area is 412 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 26-Sep-2020 (5 day trailing average) 4,102,029 KM2         
         
NSIDC Sea ice EXTENT gain on this day 59 k, 10 k more than the 2010's average gain of 49k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 641 k less than the 2010's average         
- 2020 EXTENT is 1,584 k less than the 2000's average         
- 2020 EXTENT is 763 k less than 2016         
- 2020 EXTENT is 309 k less than 2019          
- 2020 EXTENT is 422 k more than 2012
___________________________________
Fram export into the Greenland Sea in overdrive,
- daily extent gain 16k,
- daily area gain 14k.      
If it doesn't melt this year it will next year.
   
___________________________________________         
Note: Click an image for full-size         
"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)

Stephan

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Re: 2020 Sea ice area and extent data
« Reply #1632 on: September 28, 2020, 06:57:29 AM »
JAXA Arctic Sea Ice Extent as of Sep 27, 2020.
All values in M km²

2020: 4.07 (decrease of 0.02, whereas the usual increase of the last decades for this day is +0.05).
2020 is 2nd in the list.

2012: 3.62
2007: 4.19
2019: 4.31
2018: 4.70
2011: 4.73
2010s: 4.72
2015: 4.80
2008: 4.85
2017: 4.89
2016: 5.01
2010: 5.17
2014: 5.22
2013: 5.27
2000s: 5.81
1990s: 6.99
1980s: 7.69
It is too late just to be concerned about Climate Change

Niall Dollard

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Re: 2020 Sea ice area and extent data
« Reply #1633 on: September 28, 2020, 07:03:07 AM »
Was just about to post same Stephan. But mine is in km2. I'll post it anyway.

Jaxa Arctic Sea Ice Extent
 
September 27th : 4070784 km2

A drop of 15,002

gerontocrat

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Re: 2020 Sea ice area and extent data
« Reply #1634 on: September 28, 2020, 11:50:06 AM »
JAXA ARCTIC SEA ICE EXTENT:  4,070,784 KM2 as at 27-Sep-2020

- Extent loss on this day 15k, 72 k less than the average gain on this day (of the last 10 years) of 57k,
- Extent gain from minimum on this date is 516 k, which is 41 k, 9% more than the 10 year average of 475 k.
- Extent is at position #2 in the satellite record
- Extent is  240 k LESS than 2019,
- Extent is  941 k LESS than 2016,
- Extent is  448 k MORE than 2012
- Extent is  119 k LESS than 2007
_____________________________________________
On average 4.8% of extent gains from minimum to maximum done, and 165 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.52 million km2, 0.36 million km2 below the March 2017 record low maximum of 13.88 million km2.
______________________________
N.B. Click  on image for full-size
"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: 2020 Sea ice area and extent data
« Reply #1635 on: September 28, 2020, 02:23:06 PM »
NSIDC Total Area as at 27-Sep-2020 (5 day trailing average) 3,015,416 KM2         
         
Total Area         
 3,015,416    km2      
-523,223    km2   <   2010's average.
-503,357    km2   <   2019
-1,317,651    km2   <   2000's average.
         
Total Change    17    k   gain
Peripheral Seas    15    k   gain
Central Seas___    2    k   gain
         
Peripheral Seas         
Okhotsk______    0    k   gain
Bering _______   -0    k   loss
Hudson Bay___   -1    k   loss
Baffin  Bay____    1    k   gain
St Lawrence___    -    k   loss
Greenland____    14    k   gain
Barents ______    0    k   gain
         
Central Arctic  Ocean Seas         
Chukchi______    1    k   gain
Beaufort_____    15    k   gain
CAA_________    14    k   gain
East Siberian__   -2    k   loss
Central Arctic_   -25    k   loss
Laptev_______    0    k   gain
Kara_________   -0    k   loss
         
Sea ice area gain on this day 17 k, 38 k less than the 2010's average gain of 55 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 523 k less than the 2010's average         
- 2020 Area is 1,318 k less than the 2000's average         
- 2020 Area is 332 k less than 2016         
- 2020 Area is 503 k less than 2019          
- 2020 Area is 393 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 27-Sep-2020 (5 day trailing average) 4,142,137 KM2         
         
NSIDC Sea ice EXTENT gain on this day 40 k, 17 k less than the 2010's average gain of 57k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 658 k less than the 2010's average         
- 2020 EXTENT is 1,571 k less than the 2000's average         
- 2020 EXTENT is 826 k less than 2016         
- 2020 EXTENT is 322 k less than 2019          
- 2020 EXTENT is 422 k more than 2012         
___________________________________________         
Note: Click an image for full-size         
"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: 2020 Sea ice area and extent data
« Reply #1636 on: September 28, 2020, 02:25:22 PM »
NSIDC data
The graphs show the contrast between the Central Arctic Sea & the Beaufort Sea
"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: 2020 Sea ice area and extent data
« Reply #1637 on: September 29, 2020, 05:45:14 AM »
Hi everyone! I came back from my vacation.  :)

[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 28th, 2020:
     4,076,912 km2, a small increase of 6,128 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent

P.S. It looks like 2020 will be the second lowest on all days in September.
« Last Edit: September 29, 2020, 05:59:13 AM 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: 2020 Sea ice area and extent data
« Reply #1638 on: September 29, 2020, 12:11:21 PM »
JAXA ARCTIC SEA ICE EXTENT:  4,076,912 KM2 as at 28-Sep-2020

- Extent gain on this day 6k, 49 k less than the average gain on this day (of the last 10 years) of 55k,
- Extent gain from minimum on this date is 522 k, which is 6 k, 1% less than the 10 year average of 528 k.
- Extent is at position #2 in the satellite record
- Extent is  268 k LESS than 2019,
- Extent is  953 k LESS than 2016,
- Extent is  395 k MORE than 2012
- Extent is  195 k LESS than 2007
_____________________________________________
On average 5.3% of extent gains  from minimum to maximum done, and 164 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.47 million km2, 0.41 million km2 below the March 2017 record low maximum of 13.88 million km2.
______________________________
N.B. Click  on image for full-size
"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: 2020 Sea ice area and extent data
« Reply #1639 on: September 29, 2020, 03:43:29 PM »
NSIDC Total Area as at 28-Sep-2020 (5 day trailing average) 3,029,186 KM2         
         
Total Area         
 3,029,186    km2      
-561,344    km2   <   2010's average.
-508,624    km2   <   2019
-1,346,817    km2   <   2000's average.
         
Total Change    14    k   gain
Peripheral Seas    14    k   gain
Central Seas___   -1    k   loss
         
Peripheral Seas         
Okhotsk______    0    k   gain
Bering _______    0    k   gain
Hudson Bay___   -1    k   loss
Baffin  Bay____   -0    k   loss
St Lawrence___    -    k   loss
Greenland____    15    k   gain
Barents ______   -0    k   loss
         
Central Arctic  Ocean Seas         
Chukchi______    1    k   gain
Beaufort_____    12    k   gain
CAA_________    14    k   gain
East Siberian__   -7    k   loss
Central Arctic_   -20    k   loss
Laptev_______    0    k   gain
Kara_________   -0    k   loss
         
Sea ice area gain on this day 14 k, 38 k less than the 2010's average gain of 52 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 561 k less than the 2010's average         
- 2020 Area is 1,347 k less than the 2000's average         
- 2020 Area is 393 k less than 2016         
- 2020 Area is 509 k less than 2019          
- 2020 Area is 367 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 28-Sep-2020 (5 day trailing average) 4,181,689 KM2         
         
NSIDC Sea ice EXTENT gain on this day 40 k, 15 k less than the 2010's average gain of 55k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 674 k less than the 2010's average         
- 2020 EXTENT is 1,568 k less than the 2000's average         
- 2020 EXTENT is 859 k less than 2016         
- 2020 EXTENT is 331 k less than 2019          
- 2020 EXTENT is 415 k more than 2012         
___________________________________________         
Note: Click an image for full-size         
"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: 2020 Sea ice area and extent data
« Reply #1640 on: September 29, 2020, 03:45:18 PM »
the Central Arctic Sea continues ita record breaking run.
"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)

be cause

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Re: 2020 Sea ice area and extent data
« Reply #1641 on: September 29, 2020, 11:13:01 PM »
Only when looking again did I realise I had misread your comment , gerontocrat , '' the Central Arctic Sea continues it's record breaking ruin '' .
2007 + 5 = 2012 + 4 = 2016 + 3 = 2019 + 2 = 2021 + 1 =  ' if only we could have seen it coming ' ...

Juan C. García

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Re: 2020 Sea ice area and extent data
« Reply #1642 on: September 30, 2020, 06:03:42 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 29th, 2020:
     4,116,063 km2, an increase of 39,151 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent.
« Last Edit: September 30, 2020, 06:14:17 AM 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: 2020 Sea ice area and extent data
« Reply #1643 on: September 30, 2020, 09:31:40 AM »
JAXA ARCTIC SEA ICE EXTENT:  4,116,063 KM2 as at 29-Sep-2020

- Extent gain on this day 39k, 0 k less than the average gain on this day (of the last 10 years) of 39k,
- Extent gain from minimum on this date is 561 k, which is 8 k, 1% less than the 10 year average of 570 k.
- Extent is at position #2 in the satellite record
- Extent is  256 k LESS than 2019,
- Extent is  897 k LESS than 2016,
- Extent is  376 k MORE than 2012
- Extent is  204 k LESS than 2007
_____________________________________________
On average 5.7% of extent gains  from minimum to maximum done, and 163 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.47 million km2, 0.41 million km2 below the March 2017 record low maximum of 13.88 million km2.
______________________________
N.B. Click  on image for full-size
"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: 2020 Sea ice area and extent data
« Reply #1644 on: September 30, 2020, 02:33:54 PM »
NSIDC Total Area as at 29-Sep-2020 (5 day trailing average) 3,056,442 KM2         
         
Total Area         
 3,056,442    km2      
-583,311    km2   <   2010's average.
-493,596    km2   <   2019
-1,370,063    km2   <   2000's average.
         
Total Change    27    k   gain
Peripheral Seas    14    k   gain
Central Seas___    14    k   gain
         
Peripheral Seas         
Okhotsk______    0    k   gain
Bering _______    -    k   loss
Hudson Bay___   -0    k   loss
Baffin  Bay____   -1    k   loss
St Lawrence___    -    k   loss
Greenland____    15    k   gain
Barents ______    0    k   gain
         
Central Arctic  Ocean Seas         
Chukchi______   -0    k   loss
Beaufort_____    12    k   gain
CAA_________    6    k   gain
East Siberian__   -7    k   loss
Central Arctic_    3    k   gain
Laptev_______   -0    k   loss
Kara_________    1    k   gain
         
Sea ice area gain on this day 27 k, 22 k less than the 2010's average gain of 49 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 583 k less than the 2010's average         
- 2020 Area is 1,370 k less than the 2000's average         
- 2020 Area is 428 k less than 2016         
- 2020 Area is 494 k less than 2019          
- 2020 Area is 348 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 29-Sep-2020 (5 day trailing average) 4,212,813 KM2         
         
NSIDC Sea ice EXTENT gain on this day 31 k, 21 k less than the 2010's average gain of 52k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 695 k less than the 2010's average         
- 2020 EXTENT is 1,576 k less than the 2000's average         
- 2020 EXTENT is 883 k less than 2016         
- 2020 EXTENT is 338 k less than 2019          
- 2020 EXTENT is 402 k more than 2012         
___________________________________________         
Note: Click an image for full-size         
"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: 2020 Sea ice area and extent data
« Reply #1645 on: October 01, 2020, 05:52:11 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 30th, 2020:
     ADS is 25 minutes late in their update.
     I will check again in 20-30 minutes.
     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.

Juan C. García

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Re: 2020 Sea ice area and extent data
« Reply #1646 on: October 01, 2020, 06:33:31 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

September 30th, 2020:
     4,140,211 km2, an increase of 24,148 km2.
     2020 is 2nd lowest on record on this date.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent.
« Last Edit: October 01, 2020, 06:43:05 AM 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: 2020 Sea ice area and extent data
« Reply #1647 on: October 01, 2020, 12:03:47 PM »
JAXA ARCTIC SEA ICE EXTENT:  4,140,211 KM2 as at 30-Sep-2020

- Extent gain on this day 24k, 25 k less than the average gain on this day (of the last 10 years) of 49k,
- Extent gain from minimum on this date is 585 k, which is 35 k, 6% less than the 10 year average of 620 k.
- Extent is at position #2 in the satellite record
- Extent is  268 k LESS than 2019,
- Extent is  900 k LESS than 2016,
- Extent is  339 k MORE than 2012
- Extent is  287 k LESS than 2007
_____________________________________________
On average 6.2% of extent gains  from minimum to maximum done, and 162 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 13.45 million km2, 0.43 million km2 below the March 2017 record low maximum of 13.88 million km2.

If this is the outcome it would be astonishing given that the long-term linear trend for reductions in the sea ice maximum is at a very slow rate.
______________________________
N.B. Click  on image for full-size
"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: 2020 Sea ice area and extent data
« Reply #1648 on: October 01, 2020, 12:34:18 PM »
JAXA Arctic Sea Ice Extent... some more

First image attached is the September monthly average graph. The average daily extent was 2nd lowest in the satellite record at 3.78 million km2,
-0.38 million km2 greater than the 2012 record low of 3.40 million km2,
- 0.37 million km2 than the 2019 value of 4.15 milliion km2.
- and 0.41 million less than the linerar trend value or 4+ years ahead of that linear trend.

The second image looks at daily change from September to December - average, 2019, 2016 2012, and 2020 to date. Last year refreeze was very slow in the first 3 weeks of October. The result was the October daily average extent was the lowest in the satellite record. However from late October 2019 extent gain accelerated to well above average. Will 2020 follow a similar path? if it does there is a good chance that sometime in October 2020 daily extent will be lowest in the satellite record, espcially as 2012 daily gains were at or above average in October.

The third image is the October monthly average graph, with the 2020 data assuming average extent gains. In this case the October 2020 monthly average would be slightly above the 2019 record low, but below the 2012 average.

The 4th image is the plume - just because I like that graph.

Could be an interesting month.
"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: 2020 Sea ice area and extent data
« Reply #1649 on: October 01, 2020, 02:37:25 PM »
NSIDC Total Area as at 30-Sep-2020 (5 day trailing average) 3,079,527 KM2         
         
Total Area         
 3,079,527    km2      
-613,541    km2   <   2010's average.
-495,903    km2   <   2019
-1,409,652    km2   <   2000's average.
         
Total Change    23    k   gain
Peripheral Seas    8    k   gain
Central Seas___    15    k   gain
         
Peripheral Seas         
Okhotsk______   -0    k   loss
Bering _______    0    k   gain
Hudson Bay___    0    k   gain
Baffin  Bay____    0    k   gain
St Lawrence___    -    k   loss
Greenland____    8    k   gain
Barents ______   -0    k   loss
         
Central Arctic  Ocean Seas         
Chukchi______   -1    k   loss
Beaufort_____    11    k   gain
CAA_________    8    k   gain
East Siberian__   -7    k   loss
Central Arctic_    5    k   gain
Laptev_______   -0    k   loss
Kara_________   -1    k   loss
         
Sea ice area gain on this day 23 k, 30 k less than the 2010's average gain of 53 k         
         
- 2020 area is at position #2 in the satellite record.         
- 2020 Area is 614 k less than the 2010's average         
- 2020 Area is 1,410 k less than the 2000's average         
- 2020 Area is 469 k less than 2016         
- 2020 Area is 496 k less than 2019          
- 2020 Area is 310 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 30-Sep-2020 (5 day trailing average) 4,247,390 KM2         
         
NSIDC Sea ice EXTENT gain on this day 34 k, 20 k less than the 2010's average gain of 54k         
         
- 2020 EXTENT is at position #2 in the satellite record.         
- 2020 EXTENT is 713 k less than the 2010's average         
- 2020 EXTENT is 1,590 k less than the 2000's average         
- 2020 EXTENT is 903 k less than 2016         
- 2020 EXTENT is 339 k less than 2019          
- 2020 EXTENT is 395 k more than 2012         
___________________________________________         
Note: Click an image for full-size         
"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)