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Author Topic: Global sea ice area and extent data  (Read 187388 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.
___________________________________________________
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!"
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"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.
___________________________________________________
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)

gerontocrat

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Re: Global sea ice area and extent data
« Reply #854 on: September 20, 2020, 12:05:59 PM »
JAXA GLOBAL SEA ICE EXTENT:  22,480,396 KM2 as at 19-Sep-2020

- Extent LOSS on this day 33k, 48 k less than the average gain on this day (of the last 10 years) of 15k,
- Extent gain from minimum on this date is 5.76 million km2, 0.72 million km2, 11.2% less than the 10 year average gain of 6.48 million km2.
- Extent is at position #5 in the satellite record
- 2020 Extent is  0.33 million km2 MORE than 2019,
On average 71.3% of sea ice gain from minimum to maximum done, and 46 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 25.09 million km2, 1.32 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.[/i]

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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An extent loss when one might expect an extent gain continues the story of a somewhat chaotic year so far- global sea ice has pretty much ignored the timetable.
___________________________________________________
N.B. Click an image once for full-size
"Para a Causa do Povo a Luta Continua!"
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Stephan

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Re: Global sea ice area and extent data
« Reply #855 on: September 20, 2020, 09:33:23 PM »
Quote from gerontocrat:
"- Extent is at position #5 in the satellite record"
All top five years are the last five years.
It is too late just to be concerned about Climate Change

gerontocrat

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Re: Global sea ice area and extent data
« Reply #856 on: September 21, 2020, 12:23:19 PM »
JAXA GLOBAL SEA ICE EXTENT:  22,449,801 KM2 as at 20-Sep-2020

- Extent LOSS on this day 31k, 91 k less than the average gain on this day (of the last 10 years) of 60k,
- Extent gain from minimum on this date is 5.73 million km2, 0.82 million km2, 12.5% less than the 10 year average gain of 6.55 million km2.
- Extent is at position #4 in the satellite record
- 2020 Extent is  0.25 million km2 MORE than 2019,
On average 72.0% of sea ice gain from minimum to maximum done, and 45 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.
___________________________________________________
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.
___________________________________________________
Yet another day with an extent loss instead of an extent gain - due to Antarctic sea ice xtent loss and zero Arctic sea ice extent gain. Extent down to 4th lowest from 5th lowest,
___________________________________________________
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 #857 on: September 23, 2020, 01:23:18 PM »
JAXA GLOBAL SEA ICE EXTENT:  22,528,057 KM2 as at 22-Sep-2020

- Extent gain on this day 83k, 34 k more than the average gain on this day (of the last 10 years) of 49k,
- Extent gain from minimum on this date is 5.81 million km2, 0.83 million km2, 12.5% less than the 10 year average gain of 6.64 million km2.
- Extent is at position #5 in the satellite record
- 2020 Extent is  0.24 million km2 MORE than 2019,
On average 73.0% of sea ice gain from minimum to maximum done, and 43 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 24.98 million km2, 1.22 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.
___________________________________________________
For a change an extent increase when one was expected
___________________________________________________
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 #858 on: September 24, 2020, 11:31:25 AM »
JAXA GLOBAL SEA ICE EXTENT:  22,658,874 KM2 as at 23-Sep-2020

- Extent gain on this day 131k, 105 k more than the average gain on this day (of the last 10 years) of 26k,
- Extent gain from minimum on this date is 5.94 million km2, 0.72 million km2, 10.8% less than the 10 year average gain of 6.66 million km2.
- Extent is at position #6 in the satellite record
- 2020 Extent is  0.29 million km2 MORE than 2019,
On average 73.3% of sea ice gain from minimum to maximum done, and 42 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 25.09 million km2, 1.33 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.
___________________________________________________
Both Arctic and Antarctic daily extent gains higher than average on this day.
___________________________________________________
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 #859 on: September 26, 2020, 01:48:56 PM »
JAXA GLOBAL SEA ICE EXTENT:  22,897,229 KM2 as at 25-Sep-2020

- Extent gain on this day 162k, 121 k more than the average gain on this day (of the last 10 years) of 41k,
- Extent gain from minimum on this date is 6.18 million km2, 0.53 million km2, 8.0% less than the 10 year average gain of 6.71 million km2.
- Extent is at position #8 in the satellite record
- 2020 Extent is  0.34 million km2 MORE than 2019,
On average 74.0% of sea ice gain from minimum to maximum done, and 40 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 25.26 million km2, 1.50 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.
___________________________________________________
JAXA GLOBAL SEA ICE EXTENT:  22,897,229 KM2 as at 25-Sep-2020

- Extent gain on this day 162k, 121 k more than the average gain on this day (of the last 10 years) of 41k,
- Extent gain from minimum on this date is 6.18 million km2, 0.53 million km2, 8.0% less than the 10 year average gain of 6.71 million km2.
- Extent is at position #8 in the satellite record
- 2020 Extent is  0.34 million km2 MORE than 2019,
On average 74.0% of sea ice gain from minimum to maximum done, and 40 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 25.26 million km2, 1.50 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.
___________________________________________________
Both Arctic and Antarctic daily extent gains much higher than average on this day, resulting in an extreme global sea ice extent gain to add to above average increases in the 3 days before.

As a result Global sea ice extent now 8th lowest in the sateliite record from 4th lowest on the 21st September. .

___________________________________________________
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 #860 on: September 28, 2020, 12:59:30 PM »
JAXA GLOBAL SEA ICE EXTENT:  22,909,231 KM2 as at 27-Sep-2020

- Extent loss on this day 33k, 111 k less than the average gain on this day (of the last 10 years) of 78k,
- Extent gain from minimum on this date is 6.19 million km2, 0.65 million km2, 9.6% less than the 10 year average gain of 6.84 million km2.
- Extent is at position #6 in the satellite record
- 2020 Extent is  0.25 million km2 MORE than 2019,
On average 75.5% of sea ice gain from minimum to maximum done, and 38 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.
___________________________________________________
Wild swings from gains to losses.
___________________________________________________
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)