Author Topic: 2022 Sea ice area and extent data (Read 352404 times)

psymmo7 · « **Reply #100 on:** February 10, 2022, 01:14:17 PM »

Is this real? The area North of Svalbard does look rather depleted.

oren · « **Reply #101 on:** February 10, 2022, 02:12:53 PM »

The upswing and downswing probably have to do with a storm in a part of the Greenland Sea, as discussed by uniquorn in the AWI thread.

Shared Humanity · « **Reply #102 on:** February 10, 2022, 02:53:10 PM »

Quote from: oren on February 10, 2022, 02:12:53 PM

The upswing and downswing probably have to do with a storm in a part of the Greenland Sea, as discussed by uniquorn in the AWI thread.

What do the individual seas look like over the last three days with the steep climb and drastic fall?

Phil. · « **Reply #103 on:** February 10, 2022, 03:26:04 PM »

Quote from: oren on February 10, 2022, 02:12:53 PM

The upswing and downswing probably have to do with a storm in a part of the Greenland Sea, as discussed by uniquorn in the AWI thread.

If you look at Gero's daily change graph you'll see that swings each way at this time of year aren't that unusual.

Niall Dollard · « **Reply #104 on:** February 10, 2022, 10:53:13 PM »

Quote from: oren on February 10, 2022, 02:12:53 PM

The upswing and downswing probably have to do with a storm in a part of the Greenland Sea, as discussed by uniquorn in the AWI thread.

I wouldnt normally post in this data thread, but given such wild swings and continued comments, I'll just attach this GIF here of the AMSR2 images available from Polar View, for the 7th,8th,9th and 10th of Feb.

The 7th and 10th I'd say are pretty much true indicators of the 15% ice extent but there are huge artefacts introduced on the images in between those dates. As Oren mentioned they were likely caused by the big storm in the Irminger Sea at that time.

I think this accounts for much of the big 100k+ swings in recent days. Comparing just the 7th and the 10th images, some ice loss is evident off the coast of eastern Greenland. (In the 070222 image, the orange line represents the 100222 extent) No doubt caused by the very strong offshore winds from the storm.

Click GIF to run.

Juan C. García · « **Reply #105 on:** February 11, 2022, 04:52:20 AM »

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

February 10^th, 2022:
13,808,348 km², a drop of -41,275 km².

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

gerontocrat · « **Reply #106 on:** February 11, 2022, 12:20:27 PM »

JAXA ARCTIC SEA ICE EXTENT: 13,808,348 KM2 as at 10-Feb-2022

- Extent loss on this day 41k, 54 k less than the average gain on this day (of the last 10 years) of 13k,
- Extent gain from minimum on this date is 9,195 k, which is 314 k, 3.3% less than the 10 year average of 9,510 k.

- Extent is 10th lowest in the 43 year satellite record

- Extent is 23 k LESS than 2021,
- Extent is 204 k LESS than 2020,
- Extent is 581 k MORE than 2018,
- Extent is 437 k MORE than 2017
- Extent is 23 k MORE than 2012
- Extent is 149 k MORE than the 2010's Average
_____________________________________________
On average 94.6% of extent gains from minimum to maximum done, and 28 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.34 million km2, 0.46 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
The gif posted by Niall Dollard above is a really convincing demo that artefacts probably caused the recent wild up and down swings in measured sea ice extent. Nevertheless, the final result still seems to show a significant loss in sea ice, with extent dropping from 15th to 10th lowest in the last 3 days.
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #107 on:** February 12, 2022, 04:55:25 AM »

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

February 11^th, 2022:
13,804,085 km², a drop of -4,263 km².

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

gerontocrat · « **Reply #108 on:** February 12, 2022, 01:36:39 PM »

JAXA ARCTIC SEA ICE EXTENT: 13,804,085 KM2 as at 11-Feb-2022

- Extent loss on this day 4k, 14 k less than the average gain on this day (of the last 10 years) of 10k,
- Extent gain from minimum on this date is 9,191 k, which is 328 k, 3.4% less than the 10 year average of 9,519 k.

- Extent is 8th lowest in the 43 year satellite record

- Extent is 50 k LESS than 2021,
- Extent is 188 k LESS than 2020,
- Extent is 540 k MORE than 2018,
- Extent is 453 k MORE than 2017
- Extent is 54 k LESS than 2012
- Extent is 130 k MORE than the 2010's Average
_____________________________________________
On average 94.7% of extent gains from minimum to maximum done, and 27 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.33 million km2, 0.45 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

gerontocrat · « **Reply #109 on:** February 12, 2022, 05:25:07 PM »

NSIDC Total AREA as at 11-Feb-2022 (5 day trailing average) 12,664,240 KM2

Total Area
12,664,240    km2
225,440    km2   >   2010's average.
-258,765    km2   <   2020
91,688    km2   >   2019

Total Change   -30    k   loss
Peripheral Seas    11    k   gain
Central Seas___   -42    k   loss

Peripheral Regions
Okhotsk______    9    k   gain
Bering _______    16    k   gain
Hudson Bay___    1    k   gain
Baffin Bay____    7    k   gain
St Lawrence___    0    k   gain
Greenland____    4    k   gain
Barents ______   -25    k   loss

Central Arctic Ocean Regions
Chukchi______    1    k   gain
Beaufort_____   -0    k   loss
CAA_________   -0    k   loss
East Siberian__    0    k   gain
Central Arctic__   -15    k   loss
Laptev_______   -4    k   loss
Kara_________   -22    k   loss

Sea ice area loss on this day 30 k, 37 k less than the last 10 years average gain of 7 k

- Area is at position #13 in the satellite record.
- Area is 225 k more than the 2010's average
- Area is 317 k more than 2016
- Area is 92 k more than 2019
- Area is 259 k less than 2020
- Area is 346 k more than 2012
___________________________________________
NSIDC Total EXTENT as at 11-Feb-2022 (5 day trailing average) 14,261,235 KM2

NSIDC Sea ice EXTENT loss on this day 7 k, 19 k less than the 2010's average gain of 12k

- EXTENT is at position #13 in the satellite record.
- EXTENT is 241 k more than the 2010's average
- EXTENT is 532 k more than 2016
- EXTENT is 8 k less than 2019
- EXTENT is 241 k more than 2020
- EXTENT is 80 k less than 2012

click on image to enlarge

gerontocrat · « **Reply #110 on:** February 12, 2022, 05:27:24 PM »

As the freezing season nears its end. one can usually rely on the ice along the Atlantic front to get the wobbles.

Stephan · « **Reply #111 on:** February 12, 2022, 10:24:48 PM »

I added the monthly extent value for January 2022 into my long-term plot where I calculate the extent anomalies from 1979 up to now.
The average (1979-2022) January extent is now 14.23 M km². January 2022 had an average extent of 13.88 M km², which is 0.35 M km² less than that long-term average.
This month the value is again above the long-term linear trend line. The difference of the actual month from that trend line is +0.78 M km² (calculated from the linear trend line this January should have been at 13.10 M km²).
The slope of the long-term linear trend line became flatter by two digits (-0.0547 → -0.0545).

See attached graph. Click to enlarge.

Juan C. García · « **Reply #112 on:** February 13, 2022, 05:30:05 AM »

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

February 12^th, 2022:
13,805,612 km², an increase of 1,527 km².

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

gerontocrat · « **Reply #113 on:** February 13, 2022, 12:53:11 PM »

JAXA ARCTIC SEA ICE EXTENT: 13,805,612 KM2 as at 12-Feb-2022

- Extent gain on this day 2k, 17 k less than the average gain on this day (of the last 10 years) of 19k,
- Extent gain from minimum on this date is 9,193 k, which is 345 k, 3.6% less than the 10 year average of 9,538 k.

- Extent is 8th lowest in the 43 year satellite record

- Extent is 79 k LESS than 2021,
- Extent is 134 k LESS than 2020,
- Extent is 537 k MORE than 2018,
- Extent is 408 k MORE than 2017
- Extent is 109 k LESS than 2012
- Extent is 100 k MORE than the 2010's Average
_____________________________________________
On average 94.9% of extent gains from minimum to maximum done, and 26 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.31 million km2, 0.43 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #114 on:** February 14, 2022, 04:43:50 AM »

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

February 13^th, 2022:
13,863,122 km², an increase of 57,510 km².

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

gerontocrat · « **Reply #115 on:** February 14, 2022, 02:34:21 PM »

JAXA ARCTIC SEA ICE EXTENT: 13,863,122 KM2 as at 13-Feb-2022

- Extent gain on this day 58k, 23 k more than the average gain on this day (of the last 10 years) of 35k,
- Extent gain from minimum on this date is 9,250 k, which is 322 k, 3.4% less than the 10 year average of 9,573 k.

- Extent is 8th lowest in the 43 year satellite record

- Extent is 23 k LESS than 2021,
- Extent is 40 k LESS than 2020,
- Extent is 562 k MORE than 2018,
- Extent is 427 k MORE than 2017
- Extent is 81 k LESS than 2012
- Extent is 106 k MORE than the 2010's Average
_____________________________________________
On average 95.2% of extent gains from minimum to maximum done, and 25 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.34 million km2, 0.46 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #116 on:** February 15, 2022, 06:05:54 AM »

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

February 14^th, 2022:
13,949,255 km², an increase of 86,133 km².

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

gerontocrat · « **Reply #117 on:** February 15, 2022, 02:07:17 PM »

JAXA ARCTIC SEA ICE EXTENT: 13,949,255 KM2 as at 14-Feb-2022

- Extent gain on this day 86k, 36 k more than the average gain on this day (of the last 10 years) of 50k,
- Extent gain from minimum on this date is 9,336 k, which is 286 k, 3.0% less than the 10 year average of 9,622 k.

- Extent is 11th lowest in the 43 year satellite record

- Extent is 40 k MORE than 2021,
- Extent is 19 k MORE than 2020,
- Extent is 607 k MORE than 2018,
- Extent is 403 k MORE than 2017
- Extent is 50 k LESS than 2012
- Extent is 138 k MORE than the 2010's Average
_____________________________________________
On average 95.7% of extent gains from minimum to maximum done, and 24 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.37 million km2, 0.49 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #118 on:** February 16, 2022, 04:49:19 AM »

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

February 15^th, 2022:
14,002,413 km², an increase of 53,158 km².

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

gerontocrat · « **Reply #119 on:** February 16, 2022, 12:17:28 PM »

JAXA ARCTIC SEA ICE EXTENT: 14,002,413 KM2 as at 15-Feb-2022

- Extent gain on this day 53k, 12 k more than the average gain on this day (of the last 10 years) of 41k,
- Extent gain from minimum on this date is 9,389 k, which is 274 k, 2.8% less than the 10 year average of 9,663 k.

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

- Extent is 28 k MORE than 2021,
- Extent is 8 k MORE than 2020,
- Extent is 656 k MORE than 2018,
- Extent is 328 k MORE than 2017
- Extent is 27 k LESS than 2012
- Extent is 151 k MORE than the 2010's Average
_____________________________________________
On average 96.1% of extent gains from minimum to maximum done, and 23 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.38 million km2, 0.51 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #120 on:** February 17, 2022, 05:05:32 AM »

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

February 16^th, 2022:
14,047,511 km², an increase of 45,098 km².

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

gerontocrat · « **Reply #121 on:** February 17, 2022, 11:54:37 AM »

JAXA ARCTIC SEA ICE EXTENT: 14,047,511 KM2 as at 16-Feb-2022

- Extent gain on this day 45k, 35 k more than the average gain on this day (of the last 10 years) of 10k,
- Extent gain from minimum on this date is 9,435 k, which is 239 k, 2.5% less than the 10 year average of 9,674 k.

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

- Extent is 69 k MORE than 2021,
- Extent is 68 k MORE than 2020,
- Extent is 686 k MORE than 2018,
- Extent is 338 k MORE than 2017
- Extent is 15 k LESS than 2012
- Extent is 175 k MORE than the 2010's Average
_____________________________________________
On average 96.2% of extent gains from minimum to maximum done, and 22 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.41 million km2, 0.53 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 11th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #122 on:** February 18, 2022, 04:56:59 AM »

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

February 17^th, 2022:
14,009,030 km², a drop of -38,481 km².

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

gerontocrat · « **Reply #123 on:** February 18, 2022, 11:02:38 AM »

JAXA ARCTIC SEA ICE EXTENT: 14,009,030 KM2 as at 17-Feb-2022

- Extent loss on this day 38k, 15 k more than the average loss on this day (of the last 10 years) of 23k,
- Extent gain from minimum on this date is 9,396 k, which is 254 k, 2.6% less than the 10 year average of 9,650 k.

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

- Extent is 134 k MORE than 2021,
- Extent is 56 k MORE than 2020,
- Extent is 654 k MORE than 2018,
- Extent is 286 k MORE than 2017
- Extent is 108 k LESS than 2012
- Extent is 141 k MORE than the 2010's Average
_____________________________________________
On average 96.0% of extent gains from minimum to maximum done, and 21 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.39 million km2, 0.51 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #124 on:** February 19, 2022, 05:28:49 AM »

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

February 18^th, 2022:
13,993,270 km², a drop of -15,760 km².

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

gerontocrat · « **Reply #125 on:** February 19, 2022, 02:22:06 PM »

JAXA ARCTIC SEA ICE EXTENT: 13,993,270 KM2 as at 18-Feb-2022

- Extent loss on this day 16k, 7 k more than the average loss on this day (of the last 10 years) of 9k,
- Extent gain from minimum on this date is 9,380 k, which is 261 k, 2.7% less than the 10 year average of 9,641 k.

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

- Extent is 221 k MORE than 2021,
- Extent is 37 k MORE than 2020,
- Extent is 591 k MORE than 2018,
- Extent is 263 k MORE than 2017
- Extent is 148 k LESS than 2012
- Extent is 122 k MORE than the 2010's Average
_____________________________________________
On average 95.9% of extent gains from minimum to maximum done, and 20 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.38 million km2, 0.50 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #126 on:** February 20, 2022, 04:45:52 AM »

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

February 19^th, 2022:
14,048,223 km², an increase of 54,953 km².

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

gerontocrat · « **Reply #127 on:** February 20, 2022, 10:30:38 AM »

JAXA ARCTIC SEA ICE EXTENT: 14,048,223 KM2 as at 19-Feb-2022

- Extent gain on this day 55k, 31 k more than the average gain on this day (of the last 10 years) of 24k,
- Extent gain from minimum on this date is 9,435 k, which is 230 k, 2.4% less than the 10 year average of 9,665 k.

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

- Extent is 300 k MORE than 2021,
- Extent is 64 k MORE than 2020,
- Extent is 608 k MORE than 2018,
- Extent is 269 k MORE than 2017
- Extent is 85 k LESS than 2012
- Extent is 155 k MORE than the 2010's Average
_____________________________________________
On average 96.2% of extent gains from minimum to maximum done, and 19 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.41 million km2, 0.53 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 11th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #128 on:** February 21, 2022, 06:13:29 AM »

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

February 20^th, 2022:
14,113,858 km², an increase of 65,635 km².

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

gerontocrat · « **Reply #129 on:** February 21, 2022, 12:15:55 PM »

JAXA ARCTIC SEA ICE EXTENT: 14,113,858 KM2 as at 20-Feb-2022

- Extent gain on this day 66k, 30 k more than the average gain on this day (of the last 10 years) of 36k,
- Extent gain from minimum on this date is 9,501 k, which is 200 k, 2.1% less than the 10 year average of 9,701 k.

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

- Extent is 362 k MORE than 2021,
- Extent is 15 k MORE than 2020,
- Extent is 634 k MORE than 2018,
- Extent is 336 k MORE than 2017
- Extent is 15 k MORE than 2012
- Extent is 201 k MORE than the 2010's Average
_____________________________________________
On average 96.5% of extent gains from minimum to maximum done, and 18 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.44 million km2, 0.57 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 11th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #130 on:** February 22, 2022, 06:31:58 AM »

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

February 21^st, 2022:
14,142,086 km², an increase of 28,228 km².

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

Brigantine · « **Reply #131 on:** February 22, 2022, 10:28:03 AM »

Updating the bit of perspective...

gerontocrat · « **Reply #132 on:** February 22, 2022, 01:48:08 PM »

JAXA ARCTIC SEA ICE EXTENT: 14,142,086 KM2 as at 21-Feb-2022

- Extent gain on this day 28k, 8 k less than the average gain on this day (of the last 10 years) of 36k,
- Extent gain from minimum on this date is 9,529 k, which is 208 k, 2.1% less than the 10 year average of 9,737 k.

- Extent is 11th lowest in the 44 year satellite record

- Extent is 382 k MORE than 2021,
- Extent is 40 k LESS than 2020,
- Extent is 585 k MORE than 2018,
- Extent is 357 k MORE than 2017
- Extent is 51 k MORE than 2012
- Extent is 204 k MORE than the 2010's Average
_____________________________________________
On average 96.9% of extent gains from minimum to maximum done, and 17 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.44 million km2, 0.56 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 11th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #133 on:** February 23, 2022, 05:00:18 AM »

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

February 22^nd, 2022:
14,179,783 km², an increase of 37,697 km².

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

gerontocrat · « **Reply #134 on:** February 23, 2022, 12:55:38 PM »

JAXA ARCTIC SEA ICE EXTENT: 14,179,783 KM2 as at 22-Feb-2022

- Extent gain on this day 38k, 21 k more than the average gain on this day (of the last 10 years) of 17k,
- Extent gain from minimum on this date is 9,567 k, which is 187 k, 1.9% less than the 10 year average of 9,754 k.

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

- Extent is 425 k MORE than 2021,
- Extent is 47 k LESS than 2020,
- Extent is 584 k MORE than 2018,
- Extent is 368 k MORE than 2017
- Extent is 100 k MORE than 2012
- Extent is 221 k MORE than the 2010's Average
_____________________________________________
On average 97.0% of extent gains from minimum to maximum done, and 16 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.47 million km2, 0.59 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 13th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #135 on:** February 24, 2022, 05:47:40 AM »

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

February 23^rd, 2022:
14,393,951 km², a two century break increase of 214,168 km².

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

gerontocrat · « **Reply #136 on:** February 24, 2022, 12:29:00 PM »

A 214k daily increase (actually a 2 day average) at this time of year?
Perhaps data for the next days will clarify matters

JAXA ARCTIC SEA ICE EXTENT: 14,393,951 KM2 as at 23-Feb-2022

- Extent gain on this day 214k, 202 k more than the average gain on this day (of the last 10 years) of 12k,
- Extent gain from minimum on this date is 9,781 k, which is 16 k, 0.2% more than the 10 year average of 9,765 k.

- Extent is 17th lowest in the 44 year satellite record

- Extent is 645 k MORE than 2021,
- Extent is 223 k MORE than 2020,
- Extent is 731 k MORE than 2018,
- Extent is 555 k MORE than 2017
- Extent is 244 k MORE than 2012
- Extent is 412 k MORE than the 2010's Average
_____________________________________________
On average 97.1% of extent gains from minimum to maximum done, and 15 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.67 million km2, 0.79 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 15th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #137 on:** February 25, 2022, 05:11:13 AM »

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

February 24^th, 2022:
14,155,314 km², a two century break drop of -238,637 km².

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

Paul · « **Reply #138 on:** February 25, 2022, 10:30:19 AM »

Probably more than likely meant yesterday's figure was an error and today's update has adjusted it rather than we lost 200k of ice.

gerontocrat · « **Reply #139 on:** February 25, 2022, 12:27:57 PM »

JAXA ARCTIC SEA ICE EXTENT: 14,155,314 KM2 as at 24-Feb-2022

- Extent loss on this day 239k, 245 k less than the average gain on this day (of the last 10 years) of 6k,
- Extent gain from minimum on this date is 9,542 k, which is 228 k, 2.3% less than the 10 year average of 9,771 k.

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

- Extent is 454 k MORE than 2021,
- Extent is 58 k MORE than 2020,
- Extent is 512 k MORE than 2018,
- Extent is 348 k MORE than 2017
- Extent is 51 k LESS than 2012
- Extent is 156 k MORE than the 2010's Average
_____________________________________________
On average 97.2% of extent gains from minimum to maximum done, and 14 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.43 million km2, 0.55 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 11th lowest in the satellite record
_______________________________________________________________
Sea ice extent 214k up followed by 239k down the next day looks a bit dodgy.
Will JAXA modify the data? If they do not could possibly leave us with a atoo early too high annual maximum.
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #140 on:** February 26, 2022, 05:06:26 AM »

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

February 25^th, 2022:
14,116,197 km², a drop of -39,117 km².

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

gerontocrat · « **Reply #141 on:** February 26, 2022, 07:03:39 PM »

JAXA ARCTIC SEA ICE EXTENT: 14,116,197 KM2 as at 25-Feb-2022

- Extent loss on this day 39k, 47 k less than the average gain on this day (of the last 10 years) of 8k,
- Extent gain from minimum on this date is 9,503 k, which is 276 k, 2.8% less than the 10 year average of 9,779 k.

- Extent is 11th lowest in the 44 year satellite record

- Extent is 445 k MORE than 2021,
- Extent is 34 k MORE than 2020,
- Extent is 477 k MORE than 2018,
- Extent is 343 k MORE than 2017
- Extent is 126 k LESS than 2012
- Extent is 115 k MORE than the 2010's Average
_____________________________________________
On average 97.3% of extent gains from minimum to maximum done, and 13 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.39** million km2, 0.52 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
**14.39 million km2 was the value of sea ice extent on 23 Feb caused by a 214k gain on that day, followed immediately by a 239k loss and then a 39k loss. So there is a good chance that unless JAXA data is amended, the records will show that the maximum sea ice extent in 2022 was on the 23 Feb, about 2 weeks earlier than average.
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #142 on:** February 27, 2022, 06:33:55 AM »

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

February 26^th, 2022:
14,144,377 km², an increase of 28,180 km².

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

gerontocrat · « **Reply #143 on:** February 27, 2022, 11:49:40 AM »

JAXA ARCTIC SEA ICE EXTENT: 14,144,377 KM2 as at 26-Feb-2022

- Extent gain on this day 28k, 3 k more than the average gain on this day (of the last 10 years) of 25k,
- Extent gain from minimum on this date is 9,531 k, which is 273 k, 2.8% less than the 10 year average of 9,804 k.

- Extent is 11th lowest in the 44 year satellite record

- Extent is 411 k MORE than 2021,
- Extent is 24 k LESS than 2020,
- Extent is 468 k MORE than 2018,
- Extent is 381 k MORE than 2017
- Extent is 162 k LESS than 2012
- Extent is 133 k MORE than the 2010's Average
_____________________________________________
On average 97.5% of extent gains from minimum to maximum done, and 12 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.39 million km2, 0.52 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

gerontocrat · « **Reply #144 on:** February 27, 2022, 03:32:34 PM »

NSIDC Total AREA as at 26-Feb-2022 (5 day trailing average) 13,036,661 KM2

Total Area
13,036,661    km2
250,520    km2   >   2010's average.
-29,746    km2   <   2020
120,351    km2   >   2019

Total Change   -37    k   loss
Peripheral Seas   -26    k   loss
Central Seas___   -11    k   loss

Peripheral Regions
Okhotsk______    2    k   gain
Bering _______   -26    k   loss
Hudson Bay___    1    k   gain
Baffin Bay____   -1    k   loss
St Lawrence___    2    k   gain
Greenland____    2    k   gain
Barents ______   -6    k   loss

Central Arctic Ocean Regions
Chukchi______   -9    k   loss
Beaufort_____   -3    k   loss
CAA_________   -1    k   loss
East Siberian__   -2    k   loss
Central Arctic__   -2    k   loss
Laptev_______    1    k   gain
Kara_________    4    k   gain

Sea ice area loss on this day 37 k, 45 k less than the last 10 years average gain of 8 k

- Area is at position #12 in the satellite record.
- Area is 251 k more than the 2010's average
- Area is 650 k more than 2016
- Area is 120 k more than 2019
- Area is 30 k less than 2020
- Area is 124 k more than 2012
___________________________________________
NSIDC Total EXTENT as at 26-Feb-2022 (5 day trailing average) 14,659,562 KM2

NSIDC Sea ice EXTENT loss on this day 10 k, 22 k less than the 2010's average gain of 12k

- EXTENT is at position #15 in the satellite record.
- EXTENT is 307 k more than the 2010's average
- EXTENT is 459 k more than 2016
- EXTENT is 564 k more than 2019
- EXTENT is 307 k more than 2020
- EXTENT is 48 k less than 2012

click on image to enlarge

Juan C. García · « **Reply #145 on:** February 28, 2022, 05:16:29 AM »

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

February 27^th, 2022:
14,168,950 km², an increase of 24,573 km².

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

gerontocrat · « **Reply #146 on:** February 28, 2022, 09:54:54 AM »

JAXA ARCTIC SEA ICE EXTENT: 14,168,950 KM2 as at 27-Feb-2022

- Extent gain on this day 25k, 11 k more than the average gain on this day (of the last 10 years) of 14k,
- Extent gain from minimum on this date is 9,556 k, which is 262 k, 2.7% less than the 10 year average of 9,818 k.

- Extent is 11th lowest in the 44 year satellite record

- Extent is 327 k MORE than 2021,
- Extent is 126 k LESS than 2020,
- Extent is 488 k MORE than 2018,
- Extent is 450 k MORE than 2017
- Extent is 143 k LESS than 2012
- Extent is 172 k MORE than the 2010's Average
_____________________________________________
On average 97.7% of extent gains from minimum to maximum done, and 11 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2022 of 14.39 million km2, 0.52 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

Juan C. García · « **Reply #147 on:** March 01, 2022, 04:48:21 AM »

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

February 28^th, 2022:
14,134,366 km², a drop of -34,584 km².

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

gerontocrat · « **Reply #148 on:** March 01, 2022, 11:51:31 AM »

JAXA ARCTIC SEA ICE EXTENT: 14,134,366 KM2 as at 28-Feb-2022

- Extent loss on this day 35k, 62 k less than the average gain on this day (of the last 10 years) of 27k,
- Extent gain from minimum on this date is 9,521 k, which is 324 k, 3.3% less than the 10 year average of 9,845 k.

- Extent is 11th lowest in the 44 year satellite record

- Extent is 192 k MORE than 2021,
- Extent is 214 k LESS than 2020,
- Extent is 407 k MORE than 2018,
- Extent is 384 k MORE than 2017
- Extent is 207 k LESS than 2012
- Extent is 117 k MORE than the 2010's Average
_____________________________________________
On average 97.9% of extent gains from minimum to maximum done, and 10 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would mean the maximum was on 23 Feb 2022 at 14.39 million km2, 0.52 million km2 above the March 2017 record low maximum of 13.88 million km2, which would be 10th lowest in the satellite record
_______________________________________________________________
N.B. Click on image to enlarge

gerontocrat · « **Reply #149 on:** March 01, 2022, 03:00:05 PM »

Here are February Monthly Average and 365 day trailing average graphs of JAXA Arctic Sea Ice Extent and NSIDC Sea Ice Area

News:

Author Topic: 2022 Sea ice area and extent data (Read 352404 times)