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

Validation of ice thickness - Full domain

Bulletin date: 2025-12-04

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: 2025-11-28:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 187207 14502 5 0 0
c1 1503 19279 3778 490 0
c2 309 4002 7064 4635 0
c3 207 1468 1429 4595 0
c4 6 658 673 1599 0
...date precedes bulletin

Date: 2025-11-30:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 147379 13953 1 0 0
c1 1285 18540 4012 465 0
c2 146 4361 8005 4378 0
c3 41 1091 1926 6075 0
c4 6 404 900 1904 0
...date precedes bulletin

Date: 2025-12-02:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 171940 13313 0 0 0
c1 1400 20622 4144 839 0
c2 92 3589 9094 5462 0
c3 28 1237 2565 6768 0
c4 6 261 678 1277 0
...date precedes bulletin

Date: 2025-12-04:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 162723 11484 0 0 0
c1 1122 21822 2836 255 0
c2 50 3185 10771 6208 0
c3 25 1030 2495 6219 0
c4 6 313 803 1171 0
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 162715 11639 0 0 0
c1 1139 21632 2914 264 0
c2 46 3294 10629 6196 0
c3 20 951 2543 6236 0
c4 6 318 819 1157 0

Date: 2025-12-06:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 174818 12824 0 0 0
c1 1593 23327 1312 175 0
c2 62 4633 10028 5152 0
c3 46 1256 4430 8714 0
c4 6 252 998 1359 0
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 174851 13122 0 0 0
c1 1582 22923 1237 190 0
c2 50 4754 10041 5165 0
c3 36 1237 4485 8705 0
c4 6 256 1005 1340 0

Date: 2025-12-08:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 167852 12814 0 0 0
c1 2298 23903 1369 195 0
c2 59 6421 9578 4100 0
c3 50 1468 4283 6594 0
c4 10 375 1105 1997 0
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 167220 12175 0 0 0
c1 2878 24423 1284 216 0
c2 109 6595 9720 4130 0
c3 49 1456 4195 6558 0
c4 13 332 1136 1982 0

Date: 2025-12-10:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 151924 10695 0 0 0
c1 908 24907 1309 132 0
c2 53 4753 8847 4817 0
c3 38 641 3598 6545 0
c4 6 274 1274 1588 0
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 149536 10677 0 0 0
c1 3222 23520 1098 207 0
c2 109 6006 8595 4226 0
c3 56 774 4034 7182 0
c4 6 293 1301 1467 0

Date: 2025-12-12:

Best estimate Forecast
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 164185 10061 6 0 0
c1 1440 21922 1949 197 0
c2 111 6569 7301 3164 0
c3 103 1466 3292 5426 0
c4 6 339 1443 1586 0
observations
open c1 c2 c3 c4
m
o
d
e
l		 open 161708 9151 13 0 0
c1 3609 21308 1728 276 0
c2 331 7835 6725 3345 0
c3 191 1527 3952 5285 0
c4 6 536 1573 1467 0


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