2023 Sea ice area and extent data

[gerontocrat]

No JAXA/VISHOP data yet on this day

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,968,429 KM2 as at 01-Jun-2023

- Area loss on this day 56k, 1 k more than the average loss on this day (of the last 10 years) of 55k,
- Area loss from maximum on this date is 2,965 k, which is 134 k, 4.3% less than the 10 year average of 3,099 k.

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

- Area is  269 k LESS than 2022,
- Area is  290 k MORE than 2020,
- Area is  614 k MORE than 2016
- Area is  47 k MORE than 2012
- Area is  15 k LESS than the 2010's Average
_____________________________________________
On average 31.2% of Area losses  from maximum to minimum done, and 101 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.14 million km2, 0.89 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 10th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[Juan C. García]

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

June 2^nd, 2023:
      The ADS-NIPR (JAXA) server is not working...
Source: https://ads.nipr.ac.jp/vishop/#/extent

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,911,871 KM2 as at 02-Jun-2023

- Area loss on this day 57k, 6 k less than the average loss on this day (of the last 10 years) of 63k,
- Area loss from maximum on this date is 3,021 k, which is 141 k, 4.5% less than the 10 year average of 3,163 k.

- Area is at position #8 in the satellite record (#1=lowest),

- Area is  232 k LESS than 2022,
- Area is  200 k MORE than 2020,
- Area is  631 k MORE than 2016
- Area is  51 k MORE than 2012
- Area is  5 k LESS than the 2010's Average
_____________________________________________
On average 31.8% of Area losses  from maximum to minimum done, and 100 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.14 million km2, 0.89 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 10th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

With Vishop/JAXA offline for a 2nd day, here is the NSIDC 5 day trailing average extent data. (I expect to revive the NSIDC one day data spreadsheet some day soon.)

NSIDC  ARCTIC SEA ICE Extent (5-day trailing average):  11,982,783 KM2 as at 02-Jun-2023

- Extent loss on this day 57k, 2 k less than the average loss on this day (of the last 10 years) of 59k,
- Extent loss from maximum on this date is 2,491 k, which is 331 k, 11.7% less than the 10 year average of 2,822 k.

- Extent is at position #11 in the satellite record (#1=lowest),

- Extent is  192 k LESS than 2022,
- Extent is  503 k MORE than 2020,
- Extent is  923 k MORE than 2016
- Extent is  258 k LESS than 2012
- Extent is  180 k MORE than the 2010's Average
_____________________________________________
On average 28.1% of Extent losses  from maximum to minimum done, and 100 days to minimum

Projections.

Average remaining Extent loss (of the last 10 years) would produce a minimum in Sept 2023 of 4.77 million km2, 1.38 million km2 above the Sept 2012 record low maximum of 3.39 million km2, and 13th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[Renerpho]

- Area is  51 k MORE than 2012

Isn't it amazing how closely this chart has been following that of 2012, for the past couple of weeks? May I request to add 2012 to the gains/losses chart, so we can see how they compared? If you wait with this until mid-June (when 2012 became truly interesting), some of the relevant time interval will no longer be visible.

[gerontocrat]

Just for you, Renerpho (not because of an oversight on my part) 2012 now replaces 2016 on the graph.

[gerontocrat]

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

Here is a look at where we are so far for these seas, going clockwise starting with the Barents.

Barents Sea - sea ice import from the central arctic starting in mid-March prevented a very low maximum sea ice area. Fast melt is now heading the Barents to early zero ice.

Greenland Sea - high sea ice import from the Fram Strait staerd in early March and aoart fron brief pauses, has continued until now. The result was an extreme maximum. Now melt is senough to cause sea uice area losses, but sea ice area is still 9th highest in the 45 year satellite record.

Baffin Bay - a very ordinary years so far, with sea ice area currently close to but a bit below the 2010's average.

Hudson Bay - recently Hudson bay air temperatures have been higher than average. Sea ice area is now well below the 2010's average. Over the next 10 days average temperatures are forecast to be consistently above freezing, with +ve temperature anomalies. Occasional precipitation is forecast, but it will be rain. A good chance of rapid to extreme ice losses.

see next post for remaining seas

[gerontocrat]

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

St. Lawrence - on June 1 NSIDC changes the mask, so we now see the downward adjustemnt to near zero. At maximum, the sea ice is less than half of what it was in the 1980s.

Bering Sea - a mixed year, with sea ice area losses now on the last lap, the last drop to zero on July 1 when NSIDC changes the mask.

Okhotsk Sea (NSIDC includes some of the Japan Sea) - a remarkable drop in sea ice area in mid-march the only notable event this year. This sea is also on the last lap, the last drop to zero on July 1 when NSIDC changes the mask.
_______________________________
I have added the Canadian Archipelago Area to this post. It has been warm there recently, and it's beginning to show on the sea ice area graph. That warmth, especially close to the Canadian shore, looks like persisting, so maybe some unusually high ice loss is on the cards.

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,873,729 KM2 as at 03-Jun-2023

- Area loss on this day 38k, 28 k less than the average loss on this day (of the last 10 years) of 66k,
- Area loss from maximum on this date is 3,060 k, which is 169 k, 5.2% less than the 10 year average of 3,229 k.

- Area is at position #8 in the satellite record (#1=lowest),

- Area is  168 k LESS than 2022,
- Area is  147 k MORE than 2020,
- Area is  668 k MORE than 2016
- Area is  59 k MORE than 2012
- Area is  26 k MORE than the 2010's Average
_____________________________________________
On average 32.5% of Area losses  from maximum to minimum done, and 99 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.17 million km2, 0.92 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 11th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

VISHOP/JAXA website still offline, so here is the NSIDC data from its one-day data file. Note the big dips in daily sea ice losses on 1st April, 1st May and 1st June - they are mostly from NSIDC changes to the mask. (The 5-day trailing average graphs smooth these changes out over 5 days)

NSIDC DAILY ARCTIC SEA ICE Extent:  11,786,000 KM2 as at 03-Jun-2023

- Extent loss on this day 57k, 24 k more than the average loss on this day (of the last 10 years) of 33k,
- Extent loss from maximum on this date is 2,860 k, which is 338 k, 10.6% less than the 10 year average of 3,198 k.

- Extent is at position #12 in the satellite record (#1=lowest),

- Extent is  166 k LESS than 2022,
- Extent is  371 k MORE than 2020,
- Extent is  704 k MORE than 2016
- Extent is  184 k LESS than 2012
- Extent is  150 k MORE than the 2010's Average
_____________________________________________
On average 31.1% of Extent losses  from maximum to minimum done, and 99 days to minimum

Projections.

Average remaining Extent loss (of the last 10 years) would produce a minimum in Sept 2023 of 4.70 million km2, 1.36 million km2 above the Sept 2012 record low maximum of 3.39 million km2, and 13th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

VISHOP/JAXA website still offline

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,831,129 KM2 as at 04-Jun-2023

- Area loss on this day 43k, 22 k less than the average loss on this day (of the last 10 years) of 65k,
- Area loss from maximum on this date is 3,102 k, which is 192 k, 5.8% less than the 10 year average of 3,294 k.

- Area is at position #8 in the satellite record (#1=lowest),

- Area is  100 k LESS than 2022,
- Area is  95 k MORE than 2020,
- Area is  695 k MORE than 2016
- Area is  58 k MORE than 2012
- Area is  54 k MORE than the 2010's Average
_____________________________________________
On average 33.2% of Area losses  from maximum to minimum done, and 98 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.19 million km2, 0.94 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 11th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average): A look at the High Arctic

High Arctic sea ice area melt continues to be slow. Here (and on the next posts) are the graphs for the individual regions.

Russian side
The Kara - a slow start but now just below the 2010's average.
The Laptev - a slow start, then a quick fall and now a rebound to above the 2010's average.
The ESS - area well below the 2010's average even with a recent rebound.

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average): A look at the High Arctic

Here are graphs for the rest of the regions

Chukchi- melt tending to zero, sea ice area above the 1980's average.
Beaufort - sea ice area back above the 1990's average
CAA - looks like it is responding to the heat up there. Area 2nd lowest in the the 45 year satellite record
Central Arctic - a slow melt, area well above the 2010's average

As you can see the High Arctic melt season proper is just about due to start. The next few weeks should give a clearerer idea of trends.

[Juan C. García]

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

June 5^nd, 2023:

Google Traductor:

"The Arctic Data Archive System (ADS) will be down due to system maintenance on the following dates and times.
We apologize for any inconvenience this may cause.
・Maintenance date and time
June 2, 2023 (Friday) 9:00 to June 6 (Tuesday) all day"

https://twitter.com/ADS_NIPR/status/1665701491292934146?cxt=HHwWhMDUpcur4Z0uAAAA

[gerontocrat]

5 days of June gone and the melt is just not getting into its stride.

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,793,095 KM2 as at 05-Jun-2023

- Area loss on this day 38k, 36 k less than the average loss on this day (of the last 10 years) of 74k,
- Area loss from maximum on this date is 3,140 k, which is 227 k, 6.7% less than the 10 year average of 3,367 k.

- Area is at position #10 in the satellite record (#1=lowest),

- Area is  10 k LESS than 2022,
- Area is  67 k MORE than 2020,
- Area is  725 k MORE than 2016
- Area is  67 k MORE than 2012
- Area is  91 k MORE than the 2010's Average
_____________________________________________
On average 33.9% of Area losses  from maximum to minimum done, and 97 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.23 million km2, 0.98 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 11th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

High Arctic sea ice area loss reduced to almost zero, with sea ice area changed from 9th lowest to 15th lowest in the satellite record in the last 4 days.

Meanwhile in the Peripheral seas, sea ice are is now 6th lowest in the satellite record.

[gerontocrat]

ADS_NIPR just posted this. No Jaxa data to at least June 13, and maybe longer. Looks like more than normal maintenance to me.

Pinned Tweet
ADS_NIPR
@ADS_NIPR
北極域データアーカイブシステム（ADS）は、システムメンテナンスのため、停止期間をさらに延長します。
 【サービス停止日時】延長
 日時：2023年6月2日（金）9:00 ~ 6月12日（月）(予定）
 状況次第ではさらに延長になる可能性があります。
ご迷惑をおかけして申し訳ありません.
Translated from Japanese by
The Arctic Data Archive System (ADS) will be out of service for a further extended period of time due to system maintenance.
[Service suspension date and time] Extended Date and time: June 2, 2023 (Friday) 9:00 to June 12, 2023 (Monday) (planned)
Depending on the situation, it may be extended further.
I'm sorry for causing you trouble.
10:09 PM · Jun 6, 2023
·
30
 Views

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,762,116 KM2 as at 06-Jun-2023

- Area loss on this day 31k, 46 k less than the average loss on this day (of the last 10 years) of 77k,
- Area loss from maximum on this date is 3,171 k, which is 273 k, 7.9% less than the 10 year average of 3,444 k.

- Area is at position #13 in the satellite record (#1=lowest),

- Area is  65 k MORE than 2022,
- Area is  70 k MORE than 2020,
- Area is  774 k MORE than 2016
- Area is  84 k MORE than 2012
- Area is  135 k MORE than the 2010's Average
_____________________________________________
On average 34.7% of Area losses  from maximum to minimum done, and 96 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.27 million km2, 1.03 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 14th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,712,856 KM2 as at 07-Jun-2023

- Area loss on this day 49k, 24 k less than the average loss on this day (of the last 10 years) of 73k,
- Area loss from maximum on this date is 3,220 k, which is 297 k, 8.4% less than the 10 year average of 3,518 k.

- Area is at position #15 in the satellite record (#1=lowest),

- Area is  109 k MORE than 2022,
- Area is  71 k MORE than 2020,
- Area is  787 k MORE than 2016
- Area is  115 k MORE than 2012
- Area is  156 k MORE than the 2010's Average
_____________________________________________
On average 35.4% of Area losses  from maximum to minimum done, and 95 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.30 million km2, 1.05 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 14th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

I am not at home much this month or in July - so postings will be erratic.

Meanwhile, for those suffering from JAXA withdrawal symptoms, here is NSIDC one-day data which perhaps does show signs of the melting season waking up...

NSIDC  ARCTIC SEA ICE Extent (one day data):  11,594,000 KM2 as at 07-Jun-2023

- Extent loss on this day 82k, 37 k more than the average loss on this day (of the last 10 years) of 45k,
- Extent loss from maximum on this date is 3,052 k, which is 392 k, 11.4% less than the 10 year average of 3,444 k.

- Extent is at position #13 in the satellite record (#1=lowest),

- Extent is  28 k MORE than 2022,
- Extent is  436 k MORE than 2020,
- Extent is  668 k MORE than 2016
- Extent is  36 k MORE than 2012
- Extent is  209 k MORE than the 2010's Average
_____________________________________________
On average 33.5% of Extent losses  from maximum to minimum done, and 95 days to minimum

Projections.

Average remaining Extent loss (of the last 10 years) would produce a minimum in Sept 2023 of 4.76 million km2, 1.42 million km2 above the Sept 2012 record low maximum of 3.39 million km2, and 14th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[Stephan]

I added the monthly extent value for May 2023 into my long-term plot where I calculate the extent anomalies from 1979 up to now.
The average (1979-2023) NSIDC May extent is now 13.11 M km². May 2023 had an average extent of 12.84 M km², which is 0.27 M km² below that long-term average.
This month's value was well above the long-term linear trend line. The difference of the actual month from that trend line is +0.89 M km² (calculated from the linear trend line this May should have been at 11.95 M km²). Only five months since Jan 1979 had higher deviations than May 2023!
The slope of the long-term linear trend line became flatter by two digits (-0.0528→-0.0526).

See attached graph. Click to enlarge it.

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,631,349 KM2 as at 08-Jun-2023

- Area loss on this day 82k, 13 k more than the average loss on this day (of the last 10 years) of 69k,
- Area loss from maximum on this date is 3,302 k, which is 285 k, 7.9% less than the 10 year average of 3,587 k.

- Area is at position #14 in the satellite record (#1=lowest),

- Area is  103 k MORE than 2022,
- Area is  59 k MORE than 2020,
- Area is  776 k MORE than 2016
- Area is  169 k MORE than 2012
- Area is  150 k MORE than the 2010's Average
_____________________________________________
On average 36.1% of Area losses  from maximum to minimum done, and 94 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.29 million km2, 1.04 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 14th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[Juan C. García]

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

June 9^th, 2023:
       10,886,511 km², a drop of -23,084 km².

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

P.S. ADS JAXA is back. 

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  10,886,511 KM2 as at 09-Jun-2023

- Extent loss on this day 23k, 27 k less than the average loss on this day (of the last 10 years) of 50k,
- Extent loss from maximum on this date is 3,237 k, which is 357 k, 9.9% less than the 10 year average of 3,594 k.

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

- Extent is  109 k MORE than 2022,
- Extent is  273 k MORE than 2021,
- Extent is  570 k MORE than 2020,
- Extent is  568 k MORE than  2019,
- Extent is  649 k MORE than 2016
- Extent is  194 k MORE than 2012
- Extent is  254 k MORE than the 2010's Average
_____________________________________________
On average 36.5% of extent losses from maximum to minimum done, and on average 97 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.64 million km2, 1.46 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

[Tom Stedman]

Good to see JAXA back online, looks like we haven't missed anything dramatic!

[Tom Stedman]

Having just said that, Antarctica sea ice extent is lagging so much that global sea ice is at a record low

[etienne]

I added the monthly extent value for May 2023 into my long-term plot where I calculate the extent anomalies from 1979 up to now.
The average (1979-2023) NSIDC May extent is now 13.11 M km². May 2023 had an average extent of 12.84 M km², which is 0.27 M km² below that long-term average.
This month's value was well above the long-term linear trend line. The difference of the actual month from that trend line is +0.89 M km² (calculated from the linear trend line this May should have been at 11.95 M km²). Only five months since Jan 1979 had higher deviations than May 2023!
The slope of the long-term linear trend line became flatter by two digits (-0.0528→-0.0526).

See attached graph. Click to enlarge it.

I used to make a graph with yearly average. I find a yearly average less dependent of seasonal events. On the yearly average, we are closer to the trend.

Here is an update.

Added : in 35 years, we lost around 2 million sqr km out of 12 on the yearly average, it is about 17%, quite impressive.

Added  : the graph is made with JAXA data.

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,540,834 KM2 as at 09-Jun-2023

- Area loss on this day 91k, 17 k more than the average loss on this day (of the last 10 years) of 74k,
- Area loss from maximum on this date is 3,393 k, which is 268 k, 7.3% less than the 10 year average of 3,660 k.

- Area is at position #14 in the satellite record (#1=lowest),

- Area is  98 k MORE than 2022,
- Area is  66 k MORE than 2020,
- Area is  773 k MORE than 2016
- Area is  251 k MORE than 2012
- Area is  142 k MORE than the 2010's Average
_____________________________________________
On average 36.9% of Area losses  from maximum to minimum done, and 93 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.27 million km2, 1.02 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 13th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[Unmex Chingon]

So if we are looking at current trends - say the last 4 years - are we doing any better?

I added the monthly extent value for May 2023 into my long-term plot where I calculate the extent anomalies from 1979 up to now.
The average (1979-2023) NSIDC May extent is now 13.11 M km². May 2023 had an average extent of 12.84 M km², which is 0.27 M km² below that long-term average.
This month's value was well above the long-term linear trend line. The difference of the actual month from that trend line is +0.89 M km² (calculated from the linear trend line this May should have been at 11.95 M km²). Only five months since Jan 1979 had higher deviations than May 2023!
The slope of the long-term linear trend line became flatter by two digits (-0.0528→-0.0526).

See attached graph. Click to enlarge it.

I used to make a graph with yearly average. I find a yearly average less dependent of seasonal events. On the yearly average, we are closer to the trend.

Here is an update.

Added : in 35 years, we lost around 2 million sqr km out of 12 on the yearly average, it is about 17%, quite impressive.

[etienne]

I don't believe that anything can be concluded from a 4 or five years timeframe. We are now with a higher extent than the trend, but we will soon have an El Ninio. To evaluate tendencies, I believe that we have to look at a timeframe covering at least a complete oscillation of the different systems.

[gerontocrat]

While sea ice area losses in the High Arctic continue somewhat low (with sea ice area 17th lowest), in the Peripheral Seas melt is much closer to average.

NSIDC ARCTIC PERIPHERAL SEAS - SEA ICE AREA (5-day trailing average):  1,863,293 KM2 as at 09-Jun-2023

- Area loss on this day 47k, 11 k more than the average loss on this day (of the last 10 years) of 36k,
- Area loss from maximum on this date is 2,463 k, which is 62 k, 2.5% less than the 10 year average of 2,525 k.

- Area is at position #5 in the satellite record (#1=lowest),

- Area is  9 k LESS than 2022,
- Area is  73 k LESS than 2020,
- Area is  89 k MORE than 2016
- Area is  164 k LESS than 2012
- Area is  87 k LESS than the 2010's Average
_____________________________________________
On average 58.2% of Area losses  from maximum to minimum done, and 94 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 0.05 million km2, 0.01 million km2 above the Sept 2021 record low maximum of 0.04 million km2, and 2nd lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[Juan C. García]

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

June 10^th, 2023:
       10,835,000 km², a drop of -51,511 km².

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

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  10,835,000 KM2 as at 10-Jun-2023

- Extent loss on this day 52k, 6 k less than the average loss on this day (of the last 10 years) of 58k,
- Extent loss from maximum on this date is 3,289 k, which is 364 k, 10.0% less than the 10 year average of 3,652 k.

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

- Extent is  150 k MORE than 2022,
- Extent is  308 k MORE than 2021,
- Extent is  575 k MORE than 2020,
- Extent is  557 k MORE than  2019,
- Extent is  645 k MORE than 2016
- Extent is  268 k MORE than 2012
- Extent is  261 k MORE than the 2010's Average
_____________________________________________
On average 37.1% of extent losses from maximum to minimum done, and on average 96 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.64 million km2, 1.47 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]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,436,050 KM2 as at 10-Jun-2023

- Area loss on this day 105k, 40 k more than the average loss on this day (of the last 10 years) of 65k,
- Area loss from maximum on this date is 3,497 k, which is 228 k, 6.1% less than the 10 year average of 3,725 k.

- Area is at position #10 in the satellite record (#1=lowest),

- Area is  73 k MORE than 2022,
- Area is  42 k MORE than 2020,
- Area is  727 k MORE than 2016
- Area is  338 k MORE than 2012
- Area is  117 k MORE than the 2010's Average
_____________________________________________
On average 37.5% of Area losses  from maximum to minimum done, and 92 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.23 million km2, 0.98 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 11th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[Juan C. García]

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

June 11^th, 2023:
       10,763,094 km², a drop of -71,906 km².

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

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  10,763,094 KM2 as at 11-Jun-2023

- Extent loss on this day 72k, 21 k more than the average loss on this day (of the last 10 years) of 51k,
- Extent loss from maximum on this date is 3,360 k, which is 343 k, 9.3% less than the 10 year average of 3,703 k.

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

- Extent is  157 k MORE than 2022,
- Extent is  329 k MORE than 2021,
- Extent is  535 k MORE than 2020,
- Extent is  529 k MORE than  2019,
- Extent is  608 k MORE than 2016
- Extent is  298 k MORE than 2012
- Extent is  243 k MORE than the 2010's Average
_____________________________________________
On average 37.6% of extent losses from maximum to minimum done, and on average 95 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.62 million km2, 1.45 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 14th lowest in the satellite record
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N.B. Click on images to enlarge

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,314,825 KM2 as at 11-Jun-2023

- Area loss on this day 121k, 51 k more than the average loss on this day (of the last 10 years) of 70k,
- Area loss from maximum on this date is 3,619 k, which is 176 k, 4.7% less than the 10 year average of 3,795 k.

- Area is at position #10 in the satellite record (#1=lowest),

- Area is  20 k MORE than 2022,
- Area is  16 k MORE than 2020,
- Area is  666 k MORE than 2016
- Area is  396 k MORE than 2012
- Area is  81 k MORE than the 2010's Average
_____________________________________________
On average 38.2% of Area losses  from maximum to minimum done, and 91 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.18 million km2, 0.93 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 11th lowest in the 45 year satellite record.
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N.B. Click on image to enlarge

[Juan C. García]

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

June 12^th, 2023:
       10,700,138 km², a drop of -62,956 km².

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

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  10,700,138 KM2 as at 12-Jun-2023

- Extent loss on this day 63k, 10 k more than the average loss on this day (of the last 10 years) of 53k,
- Extent loss from maximum on this date is 3,423 k, which is 333 k, 8.9% less than the 10 year average of 3,757 k.

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

- Extent is  154 k MORE than 2022,
- Extent is  361 k MORE than 2021,
- Extent is  507 k MORE than 2020,
- Extent is  508 k MORE than  2019,
- Extent is  570 k MORE than 2016
- Extent is  358 k MORE than 2012
- Extent is  242 k MORE than the 2010's Average
_____________________________________________
On average 38.2% of extent losses from maximum to minimum done, and on average 94 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.61 million km2, 1.44 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 13th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,191,868 KM2 as at 12-Jun-2023

- Area loss on this day 123k, 44 k more than the average loss on this day (of the last 10 years) of 79k,
- Area loss from maximum on this date is 3,741 k, which is 133 k, 3.4% less than the 10 year average of 3,874 k.

- Area is at position #9 in the satellite record (#1=lowest),

- Area is  25 k LESS than 2022,
- Area is  11 k MORE than 2020,
- Area is  595 k MORE than 2016
- Area is  455 k MORE than 2012
- Area is  52 k MORE than the 2010's Average
_____________________________________________
On average 39.0% of Area losses  from maximum to minimum done, and 90 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.13 million km2, 0.89 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 10th lowest in the 45 year satellite record.
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N.B. Click on image to enlarge

[gerontocrat]

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

The High Arctic melting season is showing signs of life, led by sea ice area lkosses in the Central Arctic Region which has lost 20k sea ice area in the last 3 days.

But it is in the Peripheral Seas where sea ice losses are most marked, with daily sea ice concentration now lowest in the 45 year satellite record for the last 2 days.

[Juan C. García]

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

June 13^th, 2023:
       10,624,257 km², a drop of -75,881 km².

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

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  10,624,257 KM2 as at 13-Jun-2023

- Extent loss on this day 76k, 30 k more than the average loss on this day (of the last 10 years) of 46k,
- Extent loss from maximum on this date is 3,499 k, which is 304 k, 8.0% less than the 10 year average of 3,803 k.

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

- Extent is  143 k MORE than 2022,
- Extent is  333 k MORE than 2021,
- Extent is  481 k MORE than 2020,
- Extent is  417 k MORE than  2019,
- Extent is  524 k MORE than 2016
- Extent is  401 k MORE than 2012
- Extent is  222 k MORE than the 2010's Average
_____________________________________________
On average 38.6% of extent losses from maximum to minimum done, and on average 93 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.58 million km2, 1.41 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 12th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  9,085,833 KM2 as at 13-Jun-2023

- Area loss on this day 106k, 22 k more than the average loss on this day (of the last 10 years) of 84k,
- Area loss from maximum on this date is 3,848 k, which is 111 k, 2.8% less than the 10 year average of 3,959 k.

- Area is at position #9 in the satellite record (#1=lowest),

- Area is  32 k LESS than 2022,
- Area is  18 k MORE than 2020,
- Area is  517 k MORE than 2016
- Area is  518 k MORE than 2012
- Area is  40 k MORE than the 2010's Average
_____________________________________________
On average 39.9% of Area losses  from maximum to minimum done, and 89 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.11 million km2, 0.86 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 9th lowest in the 45 year satellite record.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

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

The High Arctic is showing more signs of melt. This is most apparent in the Central Arctic Region, where sea ice concentration is 2nd lowest in the 45 year satellite record.

Note: The Central Arctic Region in the NSIDC data is considerably smaller than that used in other datasets, e.g. AMSR2, PIOMAS, HYCOM, (and the surrounding seas correspondingly larger). If someone could give me the areas in km2 of the AMSR2 regions I could produce a table of variations from the NSIDC definitions.

click images to enlarge

[gerontocrat]

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

Melt in the Peripheral Seas continues rapidly, sea ice area 3rd lowest and sea ice concentration lowest in the 45 year satellite record.

The most rapid loss is currently in Hudson Bay.

click images to enlarge

[Juan C. García]

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

June 14^th, 2023:
       10,567,164 km², a drop of -57,093 km².

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

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  10,567,164 KM2 as at 14-Jun-2023

- Extent loss on this day 57k, 4 k more than the average loss on this day (of the last 10 years) of 53k,
- Extent loss from maximum on this date is 3,556 k, which is 300 k, 7.8% less than the 10 year average of 3,857 k.

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

- Extent is  145 k MORE than 2022,
- Extent is  341 k MORE than 2021,
- Extent is  474 k MORE than 2020,
- Extent is  354 k MORE than  2019,
- Extent is  513 k MORE than 2016
- Extent is  402 k MORE than 2012
- Extent is  223 k MORE than the 2010's Average
_____________________________________________
On average 39.2% of extent losses from maximum to minimum done, and on average 92 days to minimum

Projections. (Table JAXA-Arc1)

Average remaining extent loss (of the last 10 years) would produce a minimum in September 2023 of 4.58 million km2, 1.40 million km2 above the Sept 2012 record low minimum of 3.18 million km2, and 12th lowest in the satellite record
_______________________________________________________________
N.B. Click on images to enlarge

[gerontocrat]

NSIDC  ARCTIC SEA ICE AREA (5-day trailing average):  8,991,931 KM2 as at 14-Jun-2023

- Area loss on this day 94k, 4 k less than the average loss on this day (of the last 10 years) of 98k,
- Area loss from maximum on this date is 3,941 k, which is 115 k, 2.8% less than the 10 year average of 4,057 k.

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

- Area is  28 k LESS than 2022,
- Area is  31 k MORE than 2020,
- Area is  444 k MORE than 2016
- Area is  586 k MORE than 2012
- Area is  52 k MORE than the 2010's Average
_____________________________________________
On average 40.8% of Area losses  from maximum to minimum done, and 88 days to minimum

Projections.

Average remaining Area loss (of the last 10 years) would produce a minimum in Sept 2023 of 3.12 million km2, 0.87 million km2 above the Sept 2012 record low maximum of 2.25 million km2, and 9th lowest in the 45 year satellite record.
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N.B. Click on image to enlarge

[Phil.]

Extent tends to converge over the next two weeks so the significant year to year change tends to start in July.