2021 Sea ice area and extent data

[Juan C. García]

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

January 29^th, 2021:
     13,428,030 km², an increase of 19,450 km².
     2021 is 6^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,428,030 KM2 as at 29-Jan-2021

- Extent gain on this day 19k, 8 k less than the average gain on this day (of the last 10 years) of 27k,
- Extent gain from minimum on this date is 9,873 k, which is 776 k, 9% more than the 10 year average of 9,097 k.

- Extent is at position #6 in the satellite record

- Extent is  197 k LESS than 2020,
- Extent is  533 k MORE than  2018,
- Extent is  305 k MORE than 2017
- Extent is  219 k LESS than 2013
- Extent is  53 k MORE than the 2010's Average
_____________________________________________
On average 91.3% of extent gains  from minimum to maximum done, and 38 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 14.30 million km2, 0.42 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

NSIDC Total AREA as at 29-Jan-2021 (5 day trailing average) 12,342,272 KM2         

Total Area           12,342,272    km2        122,298    km2   >   2010's average. -173,206    km2   <   2020  616,951    km2   >   2017           Total Change    51    k   gain Peripheral Seas    25    k   gain Central Seas___    25    k   gain           Peripheral Seas          Okhotsk______    3    k   gain Bering _______    1    k   gain Hudson Bay___    9    k   gain Baffin  Bay____    4    k   gain St Lawrence___   -1    k   loss Greenland____   -4    k   loss Barents ______    14    k   gain           Central Arctic  Ocean Seas          Chukchi______    5    k   gain Beaufort_____    4    k   gain CAA_________    1    k   gain East Siberian__   -1    k   loss Central Arctic_    11    k   gain Laptev_______   -0    k   loss Kara_________    5    k   gain

         
Sea ice area gain on this day 51 k, 27 k more than the 2010's average gain of 24 k         
         
- Area is at position #9 in the satellite record.         
- Area is 122 k more than the 2010's average         
- Area is 617 k more than 2017         
- Area is 400 k more than 2016         
- Area is 173 k less than 2020          
- Area is 27 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 29-Jan-2021 (5 day trailing average) 13,857,383 KM2         
         
NSIDC Sea ice EXTENT gain on this day 17 k, 2 k less than the 2010's average gain of 19k         
         
- EXTENT is at position #10 in the satellite record.         
- EXTENT is 121 k more than the 2010's average         
- EXTENT is 292 k more than 2017         
- EXTENT is 216 k more than 2016         
- EXTENT is 132 k less than 2020          
- EXTENT is 20 k more than 2012         
___________________________________________         
Note: Click an image for full-size         

[Juan C. García]

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

January 30^th, 2021:
     13,477,429 km², an increase of 49,399 km².
     2021 is 6^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,477,429 KM2 as at 30-Jan-2021

- Extent gain on this day 49k, 9 k more than the average gain on this day (of the last 10 years) of 40k,
- Extent gain from minimum on this date is 8,493 k, which is 597 k, 7% less than the 10 year average of 9,090 k.

- Extent is at position #6 in the satellite record

- Extent is  209 k LESS than 2020,
- Extent is  512 k MORE than  2018,
- Extent is  296 k MORE than 2017
- Extent is  177 k LESS than 2013
- Extent is  61 k MORE than the 2010's Average
_____________________________________________
On average 92.8% of extent gains  from minimum to maximum done, and 37 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 14.18 million km2, 0.29 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

NSIDC Total AREA as at 30-Jan-2021 (5 day trailing average) 12,395,821 KM2         

Total Area           12,395,821    km2        146,957    km2   >   2010's average. -175,462    km2   <   2020  662,016    km2   >   2017           Total Change    54    k   gain Peripheral Seas    29    k   gain Central Seas___    24    k   gain           Peripheral Seas          Okhotsk______    2    k   gain Bering _______    4    k   gain Hudson Bay___    4    k   gain Baffin  Bay____    10    k   gain St Lawrence___   -2    k   loss Greenland____   -3    k   loss Barents ______    14    k   gain           Central Arctic  Ocean Seas          Chukchi______    4    k   gain Beaufort_____    3    k   gain CAA_________    2    k   gain East Siberian__    0    k   gain Central Arctic_    10    k   gain Laptev_______   -0    k   loss Kara_________    5    k   gain

         
Sea ice area gain on this day 54 k, 25 k more than the 2010's average gain of 29 k         
         
- Area is at position #10 in the satellite record.         
- Area is 147 k more than the 2010's average         
- Area is 662 k more than 2017         
- Area is 424 k more than 2016         
- Area is 175 k less than 2020          
- Area is 72 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 30-Jan-2021 (5 day trailing average) 13,877,707 KM2         
         
NSIDC Sea ice EXTENT gain on this day 20 k, 2 k less than the 2010's average gain of 22k         
         
- EXTENT is at position #10 in the satellite record.         
- EXTENT is 119 k more than the 2010's average         
- EXTENT is 314 k more than 2017         
- EXTENT is 203 k more than 2016         
- EXTENT is 147 k less than 2020          
- EXTENT is 19 k more than 2012         
___________________________________________         
Note: Click an image for full-size         

[gerontocrat]

From NSIDC Data

While sea ice area and extent in nearly all seas are at or above the 2010's average, there is still usually a record low to be found, and it is in the St Lawrence - area has been lowest in the satellite record for 13 days this year. Baffin Bay looks as if it should be lowest, but 2011 was even lower.

So it is in the NW Atlantic where low sea ice is to be found at this year's maximum (at the moment).

[Juan C. García]

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

January 31^st, 2021:
     13,531,281 km², an increase of 53,852 km².
     2021 is now 7^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,531,281 KM2 as at 31-Jan-2021

- Extent gain on this day 54k, 19 k more than the average gain on this day (of the last 10 years) of 35k,
- Extent gain from minimum on this date is 8,603 k, which is 528 k, 6% less than the 10 year average of 9,131 k.

- Extent is at position #7 in the satellite record

- Extent is  204 k LESS than 2020,
- Extent is  456 k MORE than  2018,
- Extent is  315 k MORE than 2017
- Extent is  112 k LESS than 2013
- Extent is  79 k MORE than the 2010's Average
_____________________________________________
On average 93.2% of extent gains  from minimum to maximum done, and 36 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 14.19 million km2, 0.30 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

JAXA Data - a bit more

I attach the January Monthly averages graph. Jan 2021 average extent at 12.92 million km2 is 201K (4 years) above the linear trend value for Jan 21, but is till 5th lowest in the satellite record, and nearly 150k LESS than Jan '20.  This low 5th place was partly due to low extent values at the beginning of the month only parly offset by higher extent towards the end of the month. These later higher values affect the current estimate of the February monthly average.

Even if extent gains are only average, the February average will be 10th lowest in the satellite record, some 255k above the linear trend value for 2021, but 160K less than Feb '20.

[gerontocrat]

NSIDC Total AREA as at 31-Jan-2021 (5 day trailing average) 12,457,770 KM2         

Total Area           12,457,770    km2        177,204    km2   >   2010's average. -174,603    km2   <   2020  689,659    km2   >   2017           Total Change    62    k   gain Peripheral Seas    44    k   gain Central Seas___    18    k   gain           Peripheral Seas          Okhotsk______   -1    k   loss Bering _______    11    k   gain Hudson Bay___    3    k   gain Baffin  Bay____    14    k   gain St Lawrence___    0    k   gain Greenland____    2    k   gain Barents ______    15    k   gain           Central Arctic  Ocean Seas          Chukchi______    3    k   gain Beaufort_____    1    k   gain CAA_________    2    k   gain East Siberian__    0    k   gain Central Arctic_    11    k   gain Laptev_______   -0    k   loss Kara_________   -0    k   loss

         
Sea ice area gain on this day 62 k, 30 k more than the 2010's average gain of 32 k         
         
- Area is at position #10 in the satellite record.         
- Area is 177 k more than the 2010's average         
- Area is 690 k more than 2017         
- Area is 459 k more than 2016         
- Area is 175 k less than 2020          
- Area is 132 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 31-Jan-2021 (5 day trailing average) 13,912,400 KM2         
         
NSIDC Sea ice EXTENT gain on this day 35 k, 12 k more than the 2010's average gain of 23k         
         
- EXTENT is at position #10 in the satellite record.         
- EXTENT is 131 k more than the 2010's average         
- EXTENT is 335 k more than 2017         
- EXTENT is 223 k more than 2016         
- EXTENT is 164 k less than 2020          
- EXTENT is 43 k more than 2012   
_________________________________
Sustained bove average area and extent gains send extent down the table - both at 10th lowest in the satellite record.      
___________________________________________         
Note: Click an image for full-size         

[Juan C. García]

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

February 1^st, 2021:
     13,554,224 km², an increase of 22,943 km².
     2021 is 7^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,554,224 KM2 as at 01-Feb-2021

- Extent gain on this day 23k, 5 k more than the average gain on this day (of the last 10 years) of 18k,
- Extent gain from minimum on this date is 8,683 k, which is 477 k, 5% less than the 10 year average of 9,160 k.

- Extent is at position #7 in the satellite record

- Extent is  217 k LESS than 2020,
- Extent is  399 k MORE than  2018,
- Extent is  249 k MORE than 2017
- Extent is  54 k LESS than 2013
- Extent is  84 k MORE than the 2010's Average
_____________________________________________
On average 93.5% of extent gains  from minimum to maximum done, and 35 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 14.19 million km2, 0.30 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

NSIDC Total AREA as at 01-Feb-2021 (5 day trailing average) 12,494,250 KM2         

Total Area           12,494,250    km2        177,229    km2   >   2010's average. -180,154    km2   <   2020  674,365    km2   >   2017           Total Change    36    k   gain Peripheral Seas    32    k   gain Central Seas___    4    k   gain           Peripheral Seas          Okhotsk______    3    k   gain Bering _______    4    k   gain Hudson Bay___    2    k   gain Baffin  Bay____    11    k   gain St Lawrence___    0    k   gain Greenland____    3    k   gain Barents ______    9    k   gain           Central Arctic  Ocean Seas          Chukchi______    0    k   gain Beaufort_____    0    k   gain CAA_________    1    k   gain East Siberian__   -1    k   loss Central Arctic_    9    k   gain Laptev_______   -0    k   loss Kara_________   -5    k   loss

         
Sea ice area gain on this day 36 k, 0 k less than the 2010's average gain of 36 k         
         
- Area is at position #10 in the satellite record.         
- Area is 177 k more than the 2010's average         
- Area is 674 k more than 2017         
- Area is 467 k more than 2016         
- Area is 180 k less than 2020          
- Area is 159 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 01-Feb-2021 (5 day trailing average) 13,931,474 KM2         
         
NSIDC Sea ice EXTENT gain on this day 19 k, 14 k less than the 2010's average gain of 33k         
         
- EXTENT is at position #9 in the satellite record.         
- EXTENT is 117 k more than the 2010's average         
- EXTENT is 325 k more than 2017         
- EXTENT is 213 k more than 2016         
- EXTENT is 186 k less than 2020          
- EXTENT is 39 k more than 2012         
___________________________________________         
Note: Click an image for full-size         

[gerontocrat]

NSIDC Area analysis in Jaxa analysis format

NSIDC ARCTIC SEA ICE AREA:  12,494,250 KM2 as at 01-Feb-2021

- Area gain on this day 36k, 0 k more than the average gain on this day (of the last 10 years) of 36k,
- Extent gain from minimum on this date is 9,862 k, 646 k, 7.0% more than the 10 year average of 9,217 k.

- Extent is at position #10 in the satellite record
- Extent is  -180 k LESS than 2020
- Extent is  467 k MORE than 2016
- Extent is  159 k MORE than 2012
______________________________
On average 91.0% of extent gain from minimum to maximum done, and 38 days to maximum

Projections.
Average remaining area gain (of the last 10 years) would produce a maximum in March of 13.41 million km2, 0.71 million km2 above the 2017 minimum maximum  sea ice area of 12.70 million km2.
________________________________________________________

[gerontocrat]

from NSIDC Data - a bit more

I attach the Jan 21 monthly average area graph - 2021 was 2nd lowest.

I also attach the 365 day trailing average area table and graph. At the current rate, a new record low average might have to wait until 2022 at least.

click an image to enlarge

[Juan C. García]

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

February 2^nd, 2021:
     13,604,908 km², an increase of 50,684 km².
     2021 is now 9^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,604,908 KM2 as at 02-Feb-2021

- Extent gain on this day 51k, 10 k more than the average gain on this day (of the last 10 years) of 41k,
- Extent gain from minimum on this date is 8,680 k, which is 516 k, 6% less than the 10 year average of 9,196 k.

- Extent is at position #9 in the satellite record

- Extent is  166 k LESS than 2020,
- Extent is  354 k MORE than  2018,
- Extent is  234 k MORE than 2017
- Extent is  66 k LESS than 2013
- Extent is  94 k MORE than the 2010's Average
_____________________________________________
On average 93.9% of extent gains  from minimum to maximum done, and 34 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 14.20 million km2, 0.31 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

NSIDC Total AREA as at 02-Feb-2021 (5 day trailing average) 12,529,045 KM2         

Total Area           12,529,045    km2        175,210    km2   >   2010's average. -174,120    km2   <   2020  646,883    km2   >   2017           Total Change    35    k   gain Peripheral Seas    49    k   gain Central Seas___   -14    k   loss           Peripheral Seas          Okhotsk______    14    k   gain Bering _______    8    k   gain Hudson Bay___   -0    k   loss Baffin  Bay____    11    k   gain St Lawrence___    3    k   gain Greenland____    4    k   gain Barents ______    9    k   gain           Central Arctic  Ocean Seas          Chukchi______   -4    k   loss Beaufort_____   -0    k   loss CAA_________   -0    k   loss East Siberian__   -5    k   loss Central Arctic_    4    k   gain Laptev_______   -1    k   loss Kara_________   -7    k   loss

         
Sea ice area gain on this day 35 k, 2 k less than the 2010's average gain of 37 k         
         
- Area is at position #11 in the satellite record.         
- Area is 175 k more than the 2010's average         
- Area is 647 k more than 2017         
- Area is 485 k more than 2016         
- Area is 174 k less than 2020          
- Area is 178 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 02-Feb-2021 (5 day trailing average) 13,975,542 KM2         
         
NSIDC Sea ice EXTENT gain on this day 44 k, 10 k more than the 2010's average gain of 34k         
         
- EXTENT is at position #10 in the satellite record.         
- EXTENT is 127 k more than the 2010's average         
- EXTENT is 329 k more than 2017         
- EXTENT is 241 k more than 2016         
- EXTENT is 199 k less than 2020          
- EXTENT is 76 k more than 2012         
___________________________________________         
Note: Click an image for full-size         

[Juan C. García]

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

February 3^rd, 2021:
     13,673,946 km², an increase of 69,038 km².
     2021 is now 11^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)
     2010 without an official value, average used.

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,673,946 KM2 as at 03-Feb-2021

- Extent gain on this day 69k, 44 k more than the average gain on this day (of the last 10 years) of 25k,
- Extent gain from minimum on this date is 8,740 k, which is 469 k, 5% less than the 10 year average of 9,209 k.

- Extent is at position #11 in the satellite record

- Extent is  97 k LESS than 2020,
- Extent is  397 k MORE than  2018,
- Extent is  308 k MORE than 2017
- Extent is  87 k LESS than 2013
- Extent is  135 k MORE than the 2010's Average
_____________________________________________
On average 94.1% of extent gains  from minimum to maximum done, and 33 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 14.25 million km2, 0.36 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
Very strong extent gains in the last 2 days move extent from 7th to 11th lowest in the satellite record in those 2 days.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

NSIDC Total AREA as at 03-Feb-2021 (5 day trailing average) 12,570,789 KM2         

Total Area           12,570,789    km2        185,763    km2   >   2010's average. -125,539    km2   <   2020  616,638    km2   >   2017           Total Change    42    k   gain Peripheral Seas    69    k   gain Central Seas___   -27    k   loss           Peripheral Seas          Okhotsk______    18    k   gain Bering _______    10    k   gain Hudson Bay___   -1    k   loss Baffin  Bay____    19    k   gain St Lawrence___    7    k   gain Greenland____    5    k   gain Barents ______    10    k   gain           Central Arctic  Ocean Seas          Chukchi______   -7    k   loss Beaufort_____   -0    k   loss CAA_________    0    k   gain East Siberian__   -9    k   loss Central Arctic_    1    k   gain Laptev_______   -2    k   loss Kara_________   -10    k   loss

         
Sea ice area gain on this day 42 k, 11 k more than the 2010's average gain of 31 k         
         
- Area is at position #11 in the satellite record.         
- Area is 186 k more than the 2010's average         
- Area is 617 k more than 2017         
- Area is 520 k more than 2016         
- Area is 126 k less than 2020          
- Area is 209 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 03-Feb-2021 (5 day trailing average) 14,043,992 KM2         
         
NSIDC Sea ice EXTENT gain on this day 68 k, 35 k more than the 2010's average gain of 33k         
         
- EXTENT is at position #12 in the satellite record.         
- EXTENT is 162 k more than the 2010's average         
- EXTENT is 341 k more than 2017         
- EXTENT is 298 k more than 2016         
- EXTENT is 161 k less than 2020          
- EXTENT is 144 k more than 2012   
___________________________
Area increases in the peripheral seas extremely high - but an area loss in several of the central seas. La Nina + SSW?      
___________________________________________         
Note: Click an image for full-size         

[Juan C. García]

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

February 4^th, 2021:
     13,723,437 km², an increase of 49,491 km².
     2021 is now 12^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)
     2010 without an official value, average used.

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,723,437 KM2 as at 04-Feb-2021

- Extent gain on this day 49k, 36 k more than the average gain on this day (of the last 10 years) of 13k,
- Extent gain from minimum on this date is 8,781 k, which is 438 k, 5% less than the 10 year average of 9,219 k.

- Extent is at position #12 in the satellite record

- Extent is  47 k LESS than 2020,
- Extent is  420 k MORE than  2018,
- Extent is  386 k MORE than 2017
- Extent is  59 k LESS than 2013
- Extent is  169 k MORE than the 2010's Average
_____________________________________________
On average 94.3% of extent gains  from minimum to maximum done, and 32 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 14.28 million km2, 0.39 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
Down yet another place to 12th lowest.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

NSIDC Total AREA as at 04-Feb-2021 (5 day trailing average) 12,588,128 KM2         

Total Area           12,588,128    km2        183,204    km2   >   2010's average. -82,249    km2   <   2020  581,804    km2   >   2017           Total Change    17    k   gain Peripheral Seas    49    k   gain Central Seas___   -32    k   loss           Peripheral Seas          Okhotsk______    22    k   gain Bering _______    3    k   gain Hudson Bay___   -5    k   loss Baffin  Bay____    19    k   gain St Lawrence___    0    k   gain Greenland____    1    k   gain Barents ______    10    k   gain           Central Arctic  Ocean Seas          Chukchi______   -6    k   loss Beaufort_____   -0    k   loss CAA_________    1    k   gain East Siberian__   -9    k   loss Central Arctic_   -2    k   loss Laptev_______   -3    k   loss Kara_________   -12    k   loss

         
Sea ice area gain on this day 17 k, 3 k less than the 2010's average gain of 20 k         
         
- Area is at position #12 in the satellite record.         
- Area is 183 k more than the 2010's average         
- Area is 582 k more than 2017         
- Area is 528 k more than 2016         
- Area is 82 k less than 2020          
- Area is 221 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 04-Feb-2021 (5 day trailing average) 14,083,677 KM2         
         
NSIDC Sea ice EXTENT gain on this day 40 k, 11 k more than the 2010's average gain of 29k         
         
- EXTENT is at position #12 in the satellite record.         
- EXTENT is 173 k more than the 2010's average         
- EXTENT is 357 k more than 2017         
- EXTENT is 301 k more than 2016         
- EXTENT is 139 k less than 2020          
- EXTENT is 181 k more than 2012   
_________________________________
6 out of 7 of the High Arctic seas with an area LOSS,      
6 out of 7 of the Peripheral seas with an area GAIN.

Odd   
___________________________________________         
Note: Click an image for full-size         

[gerontocrat]

NSIDC Data

High Arctic area losses - just a wobble or an event unfolding?

[FrostKing70]

Is the loss spread over all the basins or confined to 1 or 2?   Might help indicate if it is a wobble....

[gerontocrat]

Is the loss spread over all the basins or confined to 1 or 2?   Might help indicate if it is a wobble....

6 out of 7 of the High Arctic seas with an area LOSS,     
6 out of 7 of the Peripheral seas with an area GAIN.

[Juan C. García]

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

February 5^th, 2021:
     13,736,730 km², an increase of 13,293 km².
     2021 is 12^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)
     2010 without an official value, average used.

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,736,730 KM2 as at 05-Feb-2021

- Extent gain on this day 13k, 1 k more than the average gain on this day (of the last 10 years) of 12k,
- Extent gain from minimum on this date is 10,182 k, which is 902 k, 10% more than the 10 year average of 9,280 k.

- Extent is at position #12 in the satellite record

- Extent is  117 k LESS than 2020,
- Extent is  407 k MORE than  2018,
- Extent is  413 k MORE than 2017
- Extent is  16 k LESS than 2013
- Extent is  175 k MORE than the 2010's Average
_____________________________________________
On average 94.5% of extent gains  from minimum to maximum done, and 31 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 14.27 million km2, 0.38 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
N.B. Click on image to enlarge

[uniquorn]

The sea of Okhotsk takes some responsibility for the high extent numbers.
Here using Wipneus UH AMSR2 3.125km data (up to feb4) but there shouldn't be a problem with boundaries in Okhotsk

[gerontocrat]

NSIDC Total AREA as at 05-Feb-2021 (5 day trailing average) 12,572,738 KM2         

Total Area           12,572,738    km2        153,924    km2   >   2010's average. -86,394    km2   <   2020  515,646    km2   >   2017           Total Change   -15    k   loss Peripheral Seas    20    k   gain Central Seas___   -35    k   loss           Peripheral Seas          Okhotsk______    23    k   gain Bering _______   -9    k   loss Hudson Bay___   -11    k   loss Baffin  Bay____    10    k   gain St Lawrence___    2    k   gain Greenland____   -3    k   loss Barents ______    7    k   gain           Central Arctic  Ocean Seas          Chukchi______   -7    k   loss Beaufort_____   -0    k   loss CAA_________    0    k   gain East Siberian__   -9    k   loss Central Arctic_   -6    k   loss Laptev_______   -5    k   loss Kara_________   -9    k   loss

         
Sea ice area Loss on this day 15 k, 29 k less than the 2010's average gain of 14 k         
         
- Area is at position #12 in the satellite record.         
- Area is 154 k more than the 2010's average         
- Area is 516 k more than 2017         
- Area is 482 k more than 2016         
- Area is 86 k less than 2020          
- Area is 206 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 05-Feb-2021 (5 day trailing average) 14,101,436 KM2         
         
NSIDC Sea ice EXTENT gain on this day 18 k, 9 k less than the 2010's average gain of 27k         
         
- EXTENT is at position #11 in the satellite record.         
- EXTENT is 163 k more than the 2010's average         
- EXTENT is 360 k more than 2017         
- EXTENT is 265 k more than 2016         
- EXTENT is 150 k less than 2020          
- EXTENT is 191 k more than 2012   
_________________________________
Central sea ice area down for the 4th day.

6 out of 7 of the High Arctic seas with an area LOSS,     
5 out of 7 of the Peripheral seas with an area GAIN.

Odd         
___________________________________________         
Note: Click an image for full-size         

[gerontocrat]

NSIDC Data

High Arctic Sea ice area losses in the High Arctic for a fourth day, especially along the Siberian shore

- just a wobble or an event unfolding?

[gerontocrat]

I cling to my speculation that the extremely high sea ice in the Okhotsk will force the Pacfic lows that travel up along the Japanese coast into the Bering and cause an early collapse in Bering sea ice as in early 2019..another hostage to fortune.

[Shared Humanity]

Thanks again for the daily updates and insights. I come here every day.

[Juan C. García]

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

February 6^th, 2021:
     13,740,292 km², an increase of only 3,562 km².
     2021 is 12^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,740,292 KM2 as at 06-Feb-2021

- Extent gain on this day 4k, 22 k less than the average gain on this day (of the last 10 years) of 26k,
- Extent gain from minimum on this date is 10,185 k, which is 880 k, 9.5% more than the 10 year average of 9,306 k.

- Extent is at position #12 in the satellite record

- Extent is  199 k LESS than 2020,
- Extent is  447 k MORE than  2018,
- Extent is  393 k MORE than 2017
- Extent is  22 k LESS than 2013
- Extent is  158 k MORE than the 2010's Average
_____________________________________________
On average 94.9% of extent gains  from minimum to maximum done, and 30 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 14.25 million km2, 0.36 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

NSIDC Total AREA as at 06-Feb-2021 (5 day trailing average) 12,564,466 KM2         

Total Area           12,564,466    km2        145,255    km2   >   2010's average. -124,107    km2   <   2020  463,119    km2   >   2017           Total Change   -8    k   loss Peripheral Seas    15    k   gain Central Seas___   -23    k   loss           Peripheral Seas          Okhotsk______    18    k   gain Bering _______   -4    k   loss Hudson Bay___   -15    k   loss Baffin  Bay____    6    k   gain St Lawrence___    2    k   gain Greenland____   -1    k   loss Barents ______    8    k   gain           Central Arctic  Ocean Seas          Chukchi______   -4    k   loss Beaufort_____   -0    k   loss CAA_________    0    k   gain East Siberian__   -8    k   loss Central Arctic_   -3    k   loss Laptev_______   -5    k   loss Kara_________   -3    k   loss

         
Sea ice area Loss on this day 8 k, 8 k less than the 2010's average gain of 0 k         
         
- Area is at position #11 in the satellite record.         
- Area is 145 k more than the 2010's average         
- Area is 463 k more than 2017         
- Area is 437 k more than 2016         
- Area is 124 k less than 2020          
- Area is 216 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 06-Feb-2021 (5 day trailing average) 14,128,372 KM2         
         
NSIDC Sea ice EXTENT gain on this day 27 k, 12 k more than the 2010's average gain of 15k         
         
- EXTENT is at position #12 in the satellite record.         
- EXTENT is 175 k more than the 2010's average         
- EXTENT is 366 k more than 2017         
- EXTENT is 253 k more than 2016         
- EXTENT is 178 k less than 2020          
- EXTENT is 210 k more than 2012   
________________________________________
Central sea ice area down for the 4th day but by a reduced amount.

6 out of 7 of the High Arctic seas with an area LOSS,           
___________________________________________         
Note: Click an image for full-size         

[gerontocrat]

NSIDC Data

High Arctic Sea ice area losses in the High Arctic for a fifth day, especially along the Siberian shore.
But the decline is slowing

- perhaps ending up between a wobble and an event?

EDIT: It is the ESS that shows the most striking AREA loss - but zero extent loss.

[Juan C. García]

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

February 7^th, 2021:
     13,764,486 km², an increase of 24,194 km².
     2021 is now 11^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,764,486 KM2 as at 07-Feb-2021

- Extent gain on this day 24k, 8 k more than the average gain on this day (of the last 10 years) of 16k,
- Extent gain from minimum on this date is 10,210 k, which is 888 k, 9.5% more than the 10 year average of 9,322 k.

- Extent is at position #11 in the satellite record

- Extent is  225 k LESS than 2020,
- Extent is  514 k MORE than  2018,
- Extent is  413 k MORE than 2017
- Extent is  66 k LESS than 2013
- Extent is  172 k MORE than the 2010's Average
_____________________________________________
On average 94.9% of extent gains  from minimum to maximum done, and 29 days to maximum

Projections. (Table JAXA-Arc1)

Average remaining extent gain (of the last 10 years) would produce a maximum in March 2021 of 14.28 million km2, 0.39 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
N.B. Click on image to enlarge

[gerontocrat]

NSIDC Total AREA as at 07-Feb-2021 (5 day trailing average) 12,566,593 KM2         

Total Area           12,566,593    km2        150,705    km2   >   2010's average. -157,966    km2   <   2020  456,201    km2   >   2017           Total Change    2    k   gain Peripheral Seas    7    k   gain Central Seas___   -4    k   loss           Peripheral Seas          Okhotsk______    4    k   gain Bering _______    3    k   gain Hudson Bay___   -14    k   loss Baffin  Bay____    2    k   gain St Lawrence___   -1    k   loss Greenland____    0    k   gain Barents ______    12    k   gain           Central Arctic  Ocean Seas          Chukchi______    1    k   gain Beaufort_____   -1    k   loss CAA_________    0    k   gain East Siberian__   -3    k   loss Central Arctic_    2    k   gain Laptev_______   -3    k   loss Kara_________   -0    k   loss

         
Sea ice area gain on this day 2 k, 5 k more than the 2010's average loss of 3 k         
         
- Area is at position #11 in the satellite record.         
- Area is 151 k more than the 2010's average         
- Area is 456 k more than 2017         
- Area is 380 k more than 2016         
- Area is 158 k less than 2020          
- Area is 242 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 07-Feb-2021 (5 day trailing average) 14,163,249 KM2         
         
NSIDC Sea ice EXTENT gain on this day 35 k, 25 k more than the 2010's average gain of 10k         
         
- EXTENT is at position #12 in the satellite record.         
- EXTENT is 201 k more than the 2010's average         
- EXTENT is 399 k more than 2017         
- EXTENT is 243 k more than 2016         
- EXTENT is 186 k less than 2020          
- EXTENT is 233 k more than 2012         
___________________________________________         
Note: Click an image for full-size         

[gerontocrat]

NSIDC Data

High Arctic Sea ice area losses in the High Arctic for a sixth day, but the decline is slowing sharply
- perhaps ending up more like a wobble than an event?

The ESS the only sea to show a meaningful extent loss.

But meanwhile, Hudson Bay showing that in recent years years area around maximum somewhat wobbly.

[Juan C. García]

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

February 8^th, 2021:
     13,761,907 km², a drop of -2,579 km².
     2021 is 11^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)

Source: https://ads.nipr.ac.jp/vishop/#/extent.

[gerontocrat]

JAXA ARCTIC SEA ICE EXTENT:  13,761,907 KM2 as at 08-Feb-2021

- Extent loss on this day 3k, 33 k less than the average gain on this day (of the last 10 years) of 30k,
- Extent gain from minimum on this date is 10,207 k, which is 855 k, 9.1% more than the 10 year average of 9,352 k.

- Extent is at position #11 in the satellite record

- Extent is  256 k LESS than 2020,
- Extent is  520 k MORE than  2018,
- Extent is  404 k MORE than 2017
- Extent is  170 k LESS than 2013
- Extent is  138 k MORE than the 2010's Average
_____________________________________________
On average 95.3% 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 2021 of 14.26 million km2, 0.37 million km2 above the March 2017 record low maximum of 13.88 million km2.
_______________________________________________________________
N.B. Click on image to enlarge

[colchonero]

33k less than average gain

[gerontocrat]

33k less than average gain

Did it again- posted the melting season blurb. Must be fed up with the freezing season.

[gerontocrat]

NSIDC Total AREA as at 08-Feb-2021 (5 day trailing average) 12,561,035 KM2         

Total Area           12,561,035    km2        141,209    km2   >   2010's average. -222,943    km2   <   2020  478,560    km2   >   2017           Total Change   -6    k   loss Peripheral Seas   -16    k   loss Central Seas___    10    k   gain           Peripheral Seas          Okhotsk______   -13    k   loss Bering _______   -1    k   loss Hudson Bay___   -7    k   loss Baffin  Bay____   -10    k   loss St Lawrence___   -3    k   loss Greenland____    4    k   gain Barents ______    14    k   gain           Central Arctic  Ocean Seas          Chukchi______    4    k   gain Beaufort_____   -1    k   loss CAA_________   -1    k   loss East Siberian__    2    k   gain Central Arctic_    5    k   gain Laptev_______   -1    k   loss Kara_________    1    k   gain

         
Sea ice area loss on this day 6 k, 10 k less than the 2010's average gain of 4 k         
         
- Area is at position #10 in the satellite record.         
- Area is 141 k more than the 2010's average         
- Area is 479 k more than 2017         
- Area is 299 k more than 2016         
- Area is 223 k less than 2020          
- Area is 242 k more than 2012         
___________________________________________         
NSIDC Total EXTENT as at 08-Feb-2021 (5 day trailing average) 14,183,979 KM2         
         
NSIDC Sea ice EXTENT gain on this day 21 k, 3 k more than the 2010's average gain of 18k         
         
- EXTENT is at position #13 in the satellite record.         
- EXTENT is 204 k more than the 2010's average         
- EXTENT is 424 k more than 2017         
- EXTENT is 214 k more than 2016         
- EXTENT is 231 k less than 2020          
- EXTENT is 215 k more than 2012         
___________________________________________         
Note: Click an image for full-size         

[gerontocrat]

NSIDC Data - a bit more
Perhaps we are reaching the wobbly month for sea ice area.

A switch from Central Seas sea ice loss to gain, and vice-versa for Peripheral Seas sea ice area on this day.

The ESS event ended up as a big wobble.

Even though the Barents sea ice gains continue to go beserk, the St Lawrence and Hudson Bay sea ice area are both at record lows for the day.

click images to enlarge

[Juan C. García]

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

February 9^th, 2021:
     13,774,514 km², an increase of 12,607 km².
     2021 is now 9^th lowest on record.
     In the graph are today's 15 lowest years.
     Highlighted 2010's average, 2021 and the 5 years with daily lowest minimum:
          (2012, 2020, 2019, 2016 & 2007)

Source: https://ads.nipr.ac.jp/vishop/#/extent.