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Author Topic: Global sea ice area and extent data  (Read 185851 times)

gerontocrat

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Re: Global sea ice area and extent data
« Reply #850 on: September 03, 2020, 11:44:51 AM »
JAXA GLOBAL SEA ICE EXTENT:  22,187,904 KM2 as at 02-Sep-2020

- Extent loss on this day 75k, 71 k more than the average loss on this day (of the last 10 years) of 4k,
- Extent gain from minimum on this date is 5.47 million km2, 0.88 million km2, 13.8% less than the 10 year average gain of 6.35 million km2.
- Extent is at position #3 in the satellite record
- 2020 Extent is  -0.12 million km2 LESS than 2019,
On average 69.9% of sea ice gain from minimum to maximum done, and 63 days to maximum

Projections of the Unknown Quantity. (Table JAXA-AA1)

Average remaining sea ice gain (of the last 10 years) would produce a maximum in November 2020 of 24.92 million km2, 1.16 million km2 above the 2016 record low maximum of 23.76 million km2.
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The false maximum was reached on the 28th June. We are now almost at the end of extent losses up to the false minimum of (on average)  early September. After that is the late run of extent  gains to  the “maximum maximum” for the year in late October/early November.

N.B. In 2016 the maximum was reached on the 7th July. i.e. the November maximum was less than the “false” maximum.
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After a long period of extent gains in contrast to nomal extent losses, on this day an above average extent loss for a fourth day. This is yet again due to an unusual Antarctic sea ice extent loss and an above average Arctic sea ice extent loss.
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N.B. Click an image once 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: Global sea ice area and extent data
« Reply #851 on: September 10, 2020, 11:54:15 AM »
JAXA GLOBAL SEA ICE EXTENT:  22,183,774 KM2 as at 09-Sep-2020

- Extent gain on this day 15k, 0 k less than the average gain on this day (of the last 10 years) of 15k,
- Extent gain from minimum on this date is 5.46 million km2, 0.85 million km2, 13.4% less than the 10 year average gain of 6.31 million km2.
- Extent is at position #1 in the satellite record
- 2020 Extent is  -0.11 million km2 LESS than 2019,
On average 69.7% of sea ice gain from minimum to maximum done, and 56 days to maximum

Projections of the Unknown Quantity. (Table JAXA-AA1)

Average remaining sea ice gain (of the last 10 years) would produce a maximum in November 2020 of 24.93 million km2, 1.17 million km2 above the 2016 record low maximum of 23.76 million km2.
___________________________________________________
The false maximum was reached on the 28th June. We are at the end of extent losses up to the false minimum of early September. After that is the late run of extent  gains to  the “maximum maximum” for the year in late October/early November.

N.B. In 2016 the maximum was reached on the 7th July. i.e. the November maximum was less than the “false” maximum.
___________________________________________________
N.B. Click an image once 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: Global sea ice area and extent data
« Reply #852 on: September 12, 2020, 08:13:05 PM »
JAXA GLOBAL SEA ICE EXTENT:  22,289,738 KM2 as at 11-Sep-2020

- Extent gain on this day 73k, 59 k more than the average gain on this day (of the last 10 years) of 14k,
- Extent gain from minimum on this date is 5.57 million km2, 0.78 million km2, 12.3% less than the 10 year average gain of 6.35 million km2.
- Extent is at position #4 in the satellite record
- 2020 Extent is  0.03 million km2 MORE than 2019,
On average 70.1% of sea ice gain from minimum to maximum done, and 54 days to maximum

Projections of the Unknown Quantity. (Table JAXA-AA1)

Average remaining sea ice gain (of the last 10 years) would produce a maximum in November 2020 of 24.99 million km2, 1.23 million km2 above the 2016 record low maximum of 23.76 million km2.
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The false maximum was reached at the end of June. We are at the end of extent losses up to the false minimum of early September. We are now in the late run of extent gains to  the “maximum maximum” for the year in late October/early November.

N.B. In 2016 the maximum was reached on the 7th July. i.e. the November maximum was less than the “false” maximum.
___________________________________________________
Very large Antarctic extent gains have changed Global sea ice extent from lowest to 4th lowest in just 2 days.
___________________________________________________
N.B. Click an image once 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: Global sea ice area and extent data
« Reply #853 on: September 16, 2020, 01:43:29 PM »
JAXA GLOBAL SEA ICE EXTENT:  22,466,388 KM2 as at 15-Sep-2020

- Extent gain on this day 36k, 15 k more than the average gain on this day (of the last 10 years) of 21k,
- Extent gain from minimum on this date is 5.75 million km2, 0.64 million km2, 10.0% less than the 10 year average gain of 6.39 million km2.
- Extent is at position #5 in the satellite record
- 2020 Extent is  0.22 million km2 MORE than 2019,
On average 70.5% of sea ice gain from minimum to maximum done, and 50 days to maximum

Projections of the Unknown Quantity. (Table JAXA-AA1)

Average remaining sea ice gain (of the last 10 years) would produce a maximum in November 2020 of 25.14 million km2, 1.37 million km2 above the 2016 record low maximum of 23.76 million km2.
___________________________________________________
The false maximum was reached on the 28th June. We are at the end of extent losses up to the false minimum of early September. We are now in the late run of extent  gains to  the “maximum maximum” for the year in late October/early November.

N.B. In 2016 the maximum was reached on the 7th July. i.e. the November maximum was less than the “false” maximum.
___________________________________________________
Antarctic sea ice gains continue well above average and are the main driver of global sea ice extent increase.
___________________________________________________
N.B. Click an image once 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)