Author Topic: 2023 Sea ice area and extent data (Read 350506 times)

Juan C. García · « **Reply #750 on:** July 23, 2023, 06:47:09 AM »

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

July 22^nd, 2023:
7,390,148 km², a drop of -91,250 km².

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

gerontocrat · « **Reply #751 on:** July 23, 2023, 09:57:40 AM »

JAXA ARCTIC SEA ICE EXTENT: 7,390,148 KM2 as at 22-Jul-2023

- Extent loss on this day 91k, 2 k less than the average loss on this day (of the last 10 years) of 93k,
- Extent loss from maximum on this date is 6,733 k, which is 406 k, 5.7% less than the 10 year average of 7,139 k.

- Extent is 12th lowest in the 44 year satellite record.

- Extent is 24 k LESS than 2022,
- Extent is 505 k MORE than 2021,
- Extent is 1,274 k MORE than 2020,
- Extent is 645 k MORE than 2019,
- Extent is 262 k MORE than 2016
- Extent is 348 k MORE than 2012
- Extent is 240 k MORE than the 2010's Average
_____________________________________________
On average 72.5% of extent losses from maximum to minimum done, and on average 54 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.69 million km2, 1.51 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 14th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

gerontocrat · « **Reply #752 on:** July 23, 2023, 07:45:27 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): 5,081,275 KM2 as at 22-Jul-2023

- Area loss on this day 110k, 24 k more than the average loss on this day (of the last 10 years) of 86k,
- Area loss from maximum on this date is 7,852 k, which is 60 k, 0.8% less than the 10 year average of 7,912 k.

- Area is at position #7 in the satellite record (#1=lowest),

- Area is 465 k LESS than 2022,
- Area is 408 k MORE than 2020,
- Area is 131 k MORE than 2016
- Area is 427 k MORE than 2012
- Area is 26 k LESS than the 2010's Average
_____________________________________________
On average 79.7% of Area losses from maximum to minimum done, and 50 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.06 million km2, 0.81 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 8th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

gerontocrat · « **Reply #753 on:** July 23, 2023, 08:47:50 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): Some more...

The High Arctic Seas sea ice area loss in total continues at a bit above average, while in the Peripheral Seas sea ice area loss stays slow.

gerontocrat · « **Reply #754 on:** July 23, 2023, 09:12:23 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): And more...

A closer look at each region in the High Arctic, going anticlockwise.

Chukchi - after a slow early season daily sea ice area losses are high but sea ice area still above the 2010's average.

Beaufort - sea ice area now well below the 2010's average

CAA - The GFS forecast is for high +ve temperature anomalies for the next week or longer. Will this accelerate sea ice area loss?

gerontocrat · « **Reply #755 on:** July 23, 2023, 09:29:18 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): And more...

Kara - a slow melting season so far with sea ice area well above the 2010's average

Laptev - as for the Kara, a slow melting season so far with sea ice area well above the 2010's average

ESS - Impressive sea ice area losses leave sea ice area currently 6th lowest in the satellite record.

and to finish
- the Central Arctic Region (NSIDC definition). Sea ice area is very close to the 2010's average and is 8th lowest in the satellite record.

With on average nearly 80% of sea ice area losses from max to min completed, the prospects for either a very low or a very high High Arctic minimum diminish every day.

Juan C. García · « **Reply #756 on:** July 24, 2023, 05:44:16 AM »

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

July 23^rd, 2023:
7,333,909 km², a drop of -56,239 km².

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

gerontocrat · « **Reply #757 on:** July 24, 2023, 07:03:49 AM »

JAXA ARCTIC SEA ICE EXTENT: 7,333,909 KM2 as at 23-Jul-2023

- Extent loss on this day 56k, 17 k less than the average loss on this day (of the last 10 years) of 73k,
- Extent loss from maximum on this date is 6,790 k, which is 422 k, 5.9% less than the 10 year average of 7,212 k.

- Extent is 13th lowest in the 44 year satellite record.

- Extent is 35 k MORE than 2022,
- Extent is 520 k MORE than 2021,
- Extent is 1,287 k MORE than 2020,
- Extent is 668 k MORE than 2019,
- Extent is 266 k MORE than 2016
- Extent is 395 k MORE than 2012
- Extent is 258 k MORE than the 2010's Average
_____________________________________________
On average 73.3% of extent losses from maximum to minimum done, and on average 53 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.70 million km2, 1.52 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 14th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

nadir · « **Reply #758 on:** July 24, 2023, 01:21:18 PM »

Looking at Aluminum’s animation I was expecting century breaks. That extent is 13th is frankly surprising.

Macalaga · « **Reply #759 on:** July 24, 2023, 01:39:24 PM »

Concentration must be getting very low given position difference between extent and area?

gerontocrat · « **Reply #760 on:** July 24, 2023, 02:07:27 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): 4,986,040 KM2 as at 23-Jul-2023

- Area loss on this day 95k, 22 k more than the average loss on this day (of the last 10 years) of 73k,
- Area loss from maximum on this date is 7,947 k, which is 37 k, 0.5% less than the 10 year average of 7,984 k.

- Area is at position #7 in the satellite record (#1=lowest),

- Area is 505 k LESS than 2022,
- Area is 398 k MORE than 2020,
- Area is 94 k MORE than 2016
- Area is 388 k MORE than 2012
- Area is 40 k LESS than the 2010's Average
_____________________________________________
On average 80.4% of Area losses from maximum to minimum done, and 49 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.04 million km2, 0.79 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 7th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

gerontocrat · « **Reply #761 on:** July 24, 2023, 02:43:12 PM »

Quote from: Macalaga on July 24, 2023, 01:39:24 PM

Concentration must be getting very low given position difference between extent and area?

Low but not that low for the Arctic as a whole and the High Arctic.
Above 2010's average in the Peripheral Seas where sea ice area losses are slow.

Stephan · « **Reply #762 on:** July 24, 2023, 08:33:40 PM »

NSIDC Sea Ice Area losses from July 1 - July 22 "relative area wise", sorted as percentages.
A slight increase (due to import from CAB)
BAR + 5%
The laggard is
CAB -14%
relatively slow melting in
CAA -23%
GRØ -24%
medium melt rates in
BEAU -42%
LAP -43%
fast (and almost identical) melting in
ESS -51%
KAR -51%
CHUK -52%
HUD -53%
The leader is
BAF -63%
Seas not mentioned here are (almost) ice-free.
Daily losses of more than 10% have not been observed so far (see gero's fantastic tables)

Juan C. García · « **Reply #763 on:** July 25, 2023, 06:08:30 AM »

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

July 24^th, 2023:
7,255,180 km², a drop of -78,729 km².

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

gerontocrat · « **Reply #764 on:** July 25, 2023, 07:20:13 AM »

JAXA ARCTIC SEA ICE EXTENT: 7,255,180 KM2 as at 24-Jul-2023

- Extent loss on this day 79k, 9 k more than the average loss on this day (of the last 10 years) of 70k,
- Extent loss from maximum on this date is 6,868 k, which is 414 k, 5.7% less than the 10 year average of 7,283 k.

- Extent is 14th lowest in the 44 year satellite record.

- Extent is 61 k MORE than 2022,
- Extent is 515 k MORE than 2021,
- Extent is 1,213 k MORE than 2020,
- Extent is 638 k MORE than 2019,
- Extent is 265 k MORE than 2016
- Extent is 545 k MORE than 2012
- Extent is 272 k MORE than the 2010's Average
_____________________________________________
On average 74.0% of extent losses from maximum to minimum done, and on average 52 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.69 million km2, 1.52 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 14th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

gerontocrat · « **Reply #765 on:** July 25, 2023, 05:16:43 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): 4,892,476 KM2 as at 24-Jul-2023

- Area loss on this day 94k, 24 k more than the average loss on this day (of the last 10 years) of 70k,
- Area loss from maximum on this date is 8,041 k, which is 13 k, 0.2% less than the 10 year average of 8,054 k.

- Area is at position #7 in the satellite record (#1=lowest),

- Area is 565 k LESS than 2022,
- Area is 387 k MORE than 2020,
- Area is 72 k MORE than 2016
- Area is 357 k MORE than 2012
- Area is 53 k LESS than the 2010's Average
_____________________________________________
On average 81.1% of Area losses from maximum to minimum done, and 48 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.01 million km2, 0.77 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 6th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

gerontocrat · « **Reply #766 on:** July 25, 2023, 05:22:04 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): more

High Arctic sea ice area losses continue above average, sea ice area currently 5th lowest.
Peripheral Seas sea ice area losses continue slow, sea ice area currently 17th lowest.

gerontocrat · « **Reply #767 on:** July 25, 2023, 05:35:15 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): more

In the High Arctic the contrast between low sea ice extent losses and high sea ice area losses continues and is shown in sea ice concentration, which is now 2nd lowest in the satellite record.

At the moment it is the ESS (4th lowest area), Chukchi (6th lowest area) & Beaufort (5th lowest area) regions that are showing the most impressive daily sea ice area losses.

RoxTheGeologist · « **Reply #768 on:** July 26, 2023, 02:42:14 AM »

Its a strange disconnect between area and extent - is concentration particularly low?

Brigantine · « **Reply #769 on:** July 26, 2023, 05:31:36 AM »

Quote from: RoxTheGeologist on July 26, 2023, 02:42:14 AM

is concentration particularly low?

Quote from: gerontocrat on July 25, 2023, 05:35:15 PM

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): more

In the High Arctic the contrast between low sea ice extent losses and high sea ice area losses continues and is shown in sea ice concentration, which is now 2nd lowest in the satellite record.

etienne · « **Reply #770 on:** July 26, 2023, 05:38:09 AM »

Quote from: RoxTheGeologist on July 26, 2023, 02:42:14 AM

Its a strange disconnect between area and extent - is concentration particularly low?

It is also strange to be above average for the peripheral seas, and under average for the central seas.

Juan C. García · « **Reply #771 on:** July 26, 2023, 06:00:21 AM »

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

July 25^th, 2023:
7,198,894 km², a drop of -56,286 km².

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

gerontocrat · « **Reply #772 on:** July 26, 2023, 07:38:43 AM »

JAXA ARCTIC SEA ICE EXTENT: 7,198,894 KM2 as at 25-Jul-2023

- Extent loss on this day 56k, 20 k less than the average loss on this day (of the last 10 years) of 76k,
- Extent loss from maximum on this date is 6,925 k, which is 433 k, 5.9% less than the 10 year average of 7,358 k.

- Extent is 14th lowest in the 44 year satellite record.

- Extent is 92 k MORE than 2022,
- Extent is 544 k MORE than 2021,
- Extent is 1,204 k MORE than 2020,
- Extent is 690 k MORE than 2019,
- Extent is 287 k MORE than 2016
- Extent is 582 k MORE than 2012
- Extent is 291 k MORE than the 2010's Average
_____________________________________________
On average 74.7% of extent losses from maximum to minimum done, and on average 51 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.71 million km2, 1.54 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 14th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

gerontocrat · « **Reply #773 on:** July 26, 2023, 09:37:44 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): 4,818,848 KM2 as at 25-Jul-2023

- Area loss on this day 74k, 12 k more than the average loss on this day (of the last 10 years) of 62k,
- Area loss from maximum on this date is 8,114 k, which is 2 k, 0.0% less than the 10 year average of 8,116 k.

- Area is at position #7 in the satellite record (#1=lowest),

- Area is 595 k LESS than 2022,
- Area is 397 k MORE than 2020,
- Area is 67 k MORE than 2016
- Area is 327 k MORE than 2012
- Area is 59 k LESS than the 2010's Average
_____________________________________________
On average 81.7% of Area losses from maximum to minimum done, and 47 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.00 million km2, 0.75 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 6th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #774 on:** July 27, 2023, 05:45:20 AM »

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

July 26^th, 2023:
7,153,801 km², a drop of -45,093 km².

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

gerontocrat · « **Reply #775 on:** July 27, 2023, 06:24:31 AM »

JAXA ARCTIC SEA ICE EXTENT: 7,153,801 KM2 as at 26-Jul-2023

- Extent loss on this day 45k, 34 k less than the average loss on this day (of the last 10 years) of 79k,
- Extent loss from maximum on this date is 6,970 k, which is 467 k, 6.3% less than the 10 year average of 7,437 k.

- Extent is 14th lowest in the 44 year satellite record.

- Extent is 171 k MORE than 2022,
- Extent is 576 k MORE than 2021,
- Extent is 1,191 k MORE than 2020,
- Extent is 769 k MORE than 2019,
- Extent is 321 k MORE than 2016
- Extent is 642 k MORE than 2012
- Extent is 324 k MORE than the 2010's Average
_____________________________________________
On average 75.5% of extent losses from maximum to minimum done, and on average 50 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.75 million km2, 1.57 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 14th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

gerontocrat · « **Reply #776 on:** July 27, 2023, 06:43:33 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): 4,756,764 KM2 as at 26-Jul-2023

- Area loss on this day 62k, 9 k more than the average loss on this day (of the last 10 years) of 53k,
- Area loss from maximum on this date is 8,177 k, which is 8 k, 0.1% more than the 10 year average of 8,169 k.

- Area is at position #7 in the satellite record (#1=lowest),

- Area is 611 k LESS than 2022,
- Area is 435 k MORE than 2020,
- Area is 58 k MORE than 2016
- Area is 306 k MORE than 2012
- Area is 68 k LESS than the 2010's Average
_____________________________________________
On average 82.2% of Area losses from maximum to minimum done, and 46 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 2.99 million km2, 0.74 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 6th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

gerontocrat · « **Reply #777 on:** July 27, 2023, 06:48:29 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average):

The High Arctic regions continue above average daily sea ice area losses, apart from the Kara & Laptev, and are in excess of extent losses leading to lower concentration.

Central Arctic graph attached, more in next post

gerontocrat · « **Reply #778 on:** July 27, 2023, 06:50:30 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average):

CAA, Beaufort, Chukchi & ESS graphs attached.

gerontocrat · « **Reply #779 on:** July 27, 2023, 06:53:07 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average):

In the Peripheral regions, daily sea ice area & extent losses remin low, with extent losses even lower than area losses leading to lower sea ice concentration.

Macalaga · « **Reply #780 on:** July 28, 2023, 12:11:10 AM »

Thanks Gero and Juan for the continuous flow of data. Gratitude from us mostly silent lurkers.

Looks like we are hitting that pivotal make or break point of the season when the central arctic sea follows the area loss pattern of the big loss years or not. If the drop continues, could be an interesting end to the season. Time and the weather of course will tell.

ShortBrutishNasty · « **Reply #781 on:** July 28, 2023, 05:44:22 AM »

What Macalaga said.

Juan C. García · « **Reply #782 on:** July 28, 2023, 06:12:15 AM »

Quote from: Macalaga on July 28, 2023, 12:11:10 AM

Thanks Gero and Juan for the continuous flow of data. Gratitude from us mostly silent lurkers.

Looks like we are hitting that pivotal make or break point of the season when the central arctic sea follows the area loss pattern of the big loss years or not. If the drop continues, could be an interesting end to the season. Time and the weather of course will tell.

My contributions have diminished substantially. So, thanks to Neven, Gero, the moderators, DungeonMaster and a a large etc. (everyone else that contributes on this Forum).

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

July 26 27^th, 2023:
7,078,489 km², a drop of -75,312 km².

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

gerontocrat · « **Reply #783 on:** July 28, 2023, 08:29:20 AM »

JAXA ARCTIC SEA ICE EXTENT: 7,078,489 KM2 as at 27-Jul-2023

- Extent loss on this day 75k, 3 k less than the average loss on this day (of the last 10 years) of 78k,
- Extent loss from maximum on this date is 7,045 k, which is 470 k, 6.3% less than the 10 year average of 7,515 k.

- Extent is 15th lowest in the 44 year satellite record.

- Extent is 185 k MORE than 2022,
- Extent is 562 k MORE than 2021,
- Extent is 1,160 k MORE than 2020,
- Extent is 790 k MORE than 2019,
- Extent is 325 k MORE than 2016
- Extent is 712 k MORE than 2012
- Extent is 339 k MORE than the 2010's Average
_____________________________________________
On average 76.3% of extent losses from maximum to minimum done, and on average 49 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.75 million km2, 1.57 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 14th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

gerontocrat · « **Reply #784 on:** July 28, 2023, 08:48:30 PM »

Blurb for Melting season
NSIDC ARCTIC SEA ICE AREA (5-day trailing average): 4,693,391 KM2 as at 27-Jul-2023

- Area loss on this day 63k, 12 k more than the average loss on this day (of the last 10 years) of 51k,
- Area loss from maximum on this date is 8,240 k, which is 20 k, 0.2% more than the 10 year average of 8,220 k.

- Area is at position #7 in the satellite record (#1=lowest),

- Area is 622 k LESS than 2022,
- Area is 469 k MORE than 2020,
- Area is 45 k MORE than 2016
- Area is 296 k MORE than 2012
- Area is 78 k LESS than the 2010's Average
_____________________________________________
On average 82.8% of Area losses from maximum to minimum done, and 45 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 2.98 million km2, 0.73 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 6th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #785 on:** July 29, 2023, 05:45:52 AM »

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

July 28^th, 2023:
6,972,673 km², a century break drop of -105,816 km².

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

gerontocrat · « **Reply #786 on:** July 29, 2023, 06:36:02 AM »

JAXA ARCTIC SEA ICE EXTENT: 6,972,673 KM2 as at 28-Jul-2023

- Extent loss on this day 106k, 26 k more than the average loss on this day (of the last 10 years) of 80k,
- Extent loss from maximum on this date is 7,151 k, which is 444 k, 5.9% less than the 10 year average of 7,595 k.

- Extent is 14th lowest in the 44 year satellite record.

- Extent is 152 k MORE than 2022,
- Extent is 527 k MORE than 2021,
- Extent is 1,087 k MORE than 2020,
- Extent is 783 k MORE than 2019,
- Extent is 287 k MORE than 2016
- Extent is 680 k MORE than 2012
- Extent is 314 k MORE than the 2010's Average
_____________________________________________
On average 77.2% of extent losses from maximum to minimum done, and on average 48 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.72 million km2, 1.55 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 14th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

gerontocrat · « **Reply #787 on:** July 29, 2023, 05:44:12 PM »

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): 4,620,656 KM2 as at 28-Jul-2023

- Area loss on this day 73k, 20 k more than the average loss on this day (of the last 10 years) of 53k,
- Area loss from maximum on this date is 8,313 k, which is 40 k, 0.5% more than the 10 year average of 8,272 k.

- Area is at position #7 in the satellite record (#1=lowest),

- Area is 626 k LESS than 2022,
- Area is 496 k MORE than 2020,
- Area is 58 k MORE than 2016
- Area is 277 k MORE than 2012
- Area is 98 k LESS than the 2010's Average
_____________________________________________
On average 83.3% of Area losses from maximum to minimum done, and 44 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 2.96 million km2, 0.71 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 6th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

gerontocrat · « **Reply #788 on:** July 29, 2023, 05:57:01 PM »

The difference between trends in sea ice area between the High Arctic and the Peripheral Regions is so marked that it is worth a closer look.

So first here is a look at the High Arctic...

NSIDC HIGH ARCTIC SEA ICE AREA (5-day trailing average): 4,232,504 KM2 as at 28-Jul-2023

- Area loss on this day 61k, 21 k more than the average loss on this day (of the last 10 years) of 40k,
- Area loss from maximum on this date is 4,484 k, which is 296 k, 7.1% more than the 10 year average of 4,188 k.

- Area is at position #7 in the satellite record (#1=lowest),

- Area is 675 k LESS than 2022,
- Area is 423 k MORE than 2020,
- Area is 49 k LESS than 2016
- Area is 219 k MORE than 2012
- Area is 119 k LESS than the 2010's Average
_____________________________________________
On average 73.6% of Area losses from maximum to minimum done, and 45 days to minimum

Projections.

Average remaining High Arctic Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 2.73 million km2, 0.67 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 4th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

gerontocrat · « **Reply #789 on:** July 29, 2023, 07:03:15 PM »

& here is a closer look at the Peripheral Regions

NSIDC ARCTIC PERIPHERAL SEAS - SEA ICE AREA (5-day trailing average): 388,152 KM2 as at 28-Jul-2023

- Area loss on this day 12k, 1 k less than the average loss on this day (of the last 10 years) of 13k,
- Area loss from maximum on this date is 3,938 k, which is 226 k, 5.4% less than the 10 year average of 4,164 k.

- Area is at position #22 in the satellite record (#1=lowest), of which 1 year(s) are before the year 2000

- Area is 49 k MORE than 2022,
- Area is 73 k MORE than 2020,
- Area is 108 k MORE than 2016
- Area is 58 k MORE than 2012
- Area is 73 k MORE than the 2010's Average
_____________________________________________
On average 95.9% of Area losses from maximum to minimum done, and 45 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 0.21 million km2, 0.17 million km2 above the Sept 2021 record low maximum of 0.04 million km2, and 23rd lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

gerontocrat · « **Reply #790 on:** July 29, 2023, 07:16:27 PM »

& here are some numerical comparisons between the High Arctic and the Peripheral Regions sea ice area as at 28 July

PERIPHERAL SEAS
- Area loss from maximum on this date is 3,938 k, which is 226 k, 5.4% less than the 10 year average of 4,164 k.

HIGH ARCTIC
- Area loss from maximum on this date is 4,484 k, which is 296 k, 7.1% more than the 10 year average of 4,188 k.

PERIPHERAL SEAS
- Area is at position #22 in the satellite record (#1=lowest), of which 1 year(s) are before the year 2000

HIGH ARCTIC
- Area is at position #7 in the satellite record (#1=lowest),

PERIPHERAL SEAS
- Area is 73 k MORE than the 2010's Average

HIGH ARCTIC
- Area is 119 k LESS than the 2010's Average

PERIPHERAL SEAS
Average remaining Area loss (of the last 10 years) would produce a minimum23rd lowest in the 45 year satellite record.

HIGH ARCTIC
Average remaining High Arctic Area loss would produce a minimum 4th lowest in the 45 year satellite record.

be cause · « **Reply #791 on:** July 29, 2023, 10:43:38 PM »

total area losses so far this month are @ 3,080,000 sq km . That's 110,000 per day .

Juan C. García · « **Reply #792 on:** July 30, 2023, 06:02:37 AM »

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

July 29^th, 2023:
6,864,101 km², a century break drop of -108,572 km².

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

gerontocrat · « **Reply #793 on:** July 30, 2023, 06:26:12 PM »

Late on parade today...

JAXA ARCTIC SEA ICE EXTENT: 6,864,101 KM2 as at 29-Jul-2023

- Extent loss on this day 109k, 31 k more than the average loss on this day (of the last 10 years) of 78k,
- Extent loss from maximum on this date is 7,259 k, which is 414 k, 5.4% less than the 10 year average of 7,673 k.

- Extent is 13th lowest in the 44 year satellite record.

- Extent is 99 k MORE than 2022,
- Extent is 489 k MORE than 2021,
- Extent is 1,033 k MORE than 2020,
- Extent is 788 k MORE than 2019,
- Extent is 242 k MORE than 2016
- Extent is 661 k MORE than 2012
- Extent is 283 k MORE than the 2010's Average
_____________________________________________
On average 77.9% of extent losses from maximum to minimum done, and on average 47 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.69 million km2, 1.52 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 14th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

gerontocrat · « **Reply #794 on:** July 30, 2023, 07:39:06 PM »

NSIDC have not yet issued their sea ice data for 29th July.

Chuck · « **Reply #795 on:** July 30, 2023, 08:00:51 PM »

According to https://cryospherecomputing.com/ there was a gain of 33k area today

Juan C. García · « **Reply #796 on:** July 31, 2023, 05:43:32 AM »

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

July 30^th, 2023:
6,779,131 km², a drop of -84,970 km².

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

gerontocrat · « **Reply #797 on:** July 31, 2023, 08:35:58 AM »

JAXA ARCTIC SEA ICE EXTENT: 6,779,131 KM2 as at 30-Jul-2023

- Extent loss on this day 85k, 19 k more than the average loss on this day (of the last 10 years) of 66k,
- Extent loss from maximum on this date is 7,344 k, which is 395 k, 5.1% less than the 10 year average of 7,739 k.

- Extent is 13th lowest in the 44 year satellite record.

- Extent is 41 k MORE than 2022,
- Extent is 436 k MORE than 2021,
- Extent is 1,001 k MORE than 2020,
- Extent is 781 k MORE than 2019,
- Extent is 245 k MORE than 2016
- Extent is 647 k MORE than 2012
- Extent is 270 k MORE than the 2010's Average
_____________________________________________
On average 78.6% of extent losses from maximum to minimum done, and on average 46 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.67 million km2, 1.50 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 14th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

gerontocrat · « **Reply #798 on:** July 31, 2023, 03:33:23 PM »

So far no updated sea ice tables from NSIDC for a 2nd day.

But Nico Sun has access to the unpublished daily data, so here it is attached from https://cryospherecomputing.com/.

gerontocrat · « **Reply #799 on:** July 31, 2023, 06:07:39 PM »

But now we have the data to 30th July.....

NSIDC ARCTIC SEA ICE AREA (5-day trailing average): 4,525,770 KM2 as at 30-Jul-2023

- Area loss on this day 55k, 7 k less than the average loss on this day (of the last 10 years) of 62k,
- Area loss from maximum on this date is 8,408 k, which is 24 k, 0.3% more than the 10 year average of 8,384 k.

- Area is at position #7 in the satellite record (#1=lowest),

- Area is 545 k LESS than 2022,
- Area is 590 k MORE than 2020,
- Area is 147 k MORE than 2016
- Area is 330 k MORE than 2012
- Area is 86 k LESS than the 2010's Average
_____________________________________________
On average 84.4% of Area losses from maximum to minimum done, and 42 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 2.98 million km2, 0.73 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 6th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

News:

Author Topic: 2023 Sea ice area and extent data (Read 350506 times)