Description of algorithm
Interpretation of results
  Ice thickness stat.s ++
  Contingency tables

Validation of ice thickness - Full domain

Bulletin date: 2025-11-27

Data source: AWI SMOS sea ice thickness

Definition of categories:

Category   Sea ice thickness   
c1<0.3m
c20.3 - 0.6m
c30.6 - 1m
c4>1m

Model vs. SMOS observations, sea ice thickness contingency tables

Date: 2025-11-21:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 173139 12480 39 4 0
c1 1092 22894 4526 944 0
c2 28 2052 4748 4378 0
c3 9 525 1329 5089 0
c4 6 180 893 1637 0
...date precedes bulletin

Date: 2025-11-23:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 180202 13811 5 0 0
c1 924 22130 4808 960 0
c2 37 2343 5246 3665 0
c3 24 380 1907 4594 0
c4 10 206 1146 1556 0
...date precedes bulletin

Date: 2025-11-25:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 177652 14196 9 3 0
c1 1191 20975 3054 442 0
c2 227 4183 7949 4146 0
c3 63 1224 2108 5918 0
c4 6 395 1016 1557 0
...date precedes bulletin

Date: 2025-11-27:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 175306 13501 2 0 0
c1 972 20161 3213 316 0
c2 69 3594 10178 6899 0
c3 29 1325 2598 7622 0
c4 6 326 809 2754 0
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 175273 13601 1 0 0
c1 1005 19990 3119 314 0
c2 68 3659 10228 6913 0
c3 30 1341 2661 7600 0
c4 6 316 791 2764 0

Date: 2025-11-29:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 175687 13797 4 0 0
c1 1865 19563 3672 330 0
c2 277 4743 7250 4371 0
c3 37 1775 1861 6847 0
c4 6 655 893 1871 0
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 175639 13758 0 0 0
c1 1917 19554 3428 285 0
c2 270 4829 7443 4391 0
c3 40 1771 1932 6868 0
c4 6 621 877 1875 0

Date: 2025-12-01:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 187472 14213 0 0 0
c1 1291 20736 4683 866 0
c2 85 3624 8477 5052 0
c3 42 1026 2645 5434 0
c4 6 299 737 1624 0
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 186742 14700 0 0 0
c1 1940 19387 3434 699 0
c2 143 4230 9980 4875 0
c3 65 1295 2295 5810 0
c4 6 286 833 1592 0

Date: 2025-12-03:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 165663 13604 0 0 0
c1 1291 21411 3363 550 0
c2 67 3316 10097 6232 0
c3 71 1039 2041 4206 0
c4 6 215 768 1014 0
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 164974 13787 0 0 0
c1 1920 20359 2720 539 0
c2 150 3987 10691 6343 0
c3 48 1236 1948 4105 0
c4 6 216 910 1015 0

Date: 2025-12-05:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 157469 12582 0 0 0
c1 1538 23201 1897 179 0
c2 72 3539 10527 5769 0
c3 91 1034 2655 6035 0
c4 7 295 839 1205 0
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 156856 12046 0 0 0
c1 2091 22261 1905 581 0
c2 158 4853 10546 5840 0
c3 63 1218 2468 5283 0
c4 9 273 999 1484 0


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