Validation of sea ice concentration - Full domain
Bulletin date: 2025-03-06
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-02-28:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67510 |
16969 |
323 |
242 |
22 |
0 |
0 |
0 |
| OW |
1 |
1377 |
464 |
859 |
107 |
0 |
0 |
0 |
| VODI |
0 |
552 |
257 |
1094 |
631 |
19 |
0 |
0 |
| ODI |
0 |
125 |
84 |
525 |
798 |
339 |
0 |
0 |
| CDI |
0 |
57 |
25 |
373 |
1369 |
1833 |
220 |
34 |
| VCDI |
0 |
28 |
39 |
231 |
995 |
7865 |
20460 |
68916 |
|
...date precedes bulletin
|
Date: 2025-03-02:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68092 |
16068 |
398 |
429 |
40 |
0 |
0 |
0 |
| OW |
4 |
1222 |
410 |
941 |
164 |
2 |
0 |
0 |
| VODI |
0 |
484 |
192 |
998 |
798 |
13 |
0 |
0 |
| ODI |
0 |
126 |
101 |
542 |
768 |
229 |
18 |
0 |
| CDI |
0 |
66 |
26 |
341 |
1067 |
1336 |
460 |
6 |
| VCDI |
0 |
34 |
49 |
233 |
936 |
8627 |
21308 |
68215 |
|
...date precedes bulletin
|
Date: 2025-03-04:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67253 |
16779 |
451 |
598 |
71 |
0 |
0 |
0 |
| OW |
6 |
1168 |
413 |
945 |
209 |
2 |
0 |
0 |
| VODI |
0 |
235 |
158 |
1271 |
715 |
20 |
0 |
0 |
| ODI |
0 |
54 |
31 |
457 |
1162 |
148 |
0 |
0 |
| CDI |
0 |
10 |
10 |
217 |
1195 |
1632 |
124 |
6 |
| VCDI |
0 |
21 |
17 |
162 |
805 |
9039 |
19642 |
69717 |
|
...date precedes bulletin
|
Date: 2025-03-06:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67285 |
16282 |
351 |
586 |
120 |
8 |
0 |
0 |
| OW |
18 |
1272 |
459 |
883 |
165 |
15 |
0 |
0 |
| VODI |
1 |
365 |
176 |
1050 |
735 |
49 |
0 |
0 |
| ODI |
0 |
81 |
36 |
491 |
906 |
207 |
1 |
0 |
| CDI |
0 |
25 |
5 |
336 |
1191 |
1474 |
236 |
67 |
| VCDI |
0 |
34 |
22 |
154 |
1132 |
8897 |
22564 |
67064 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67274 |
16327 |
377 |
640 |
122 |
7 |
0 |
0 |
| OW |
29 |
1226 |
422 |
849 |
171 |
12 |
0 |
0 |
| VODI |
1 |
367 |
189 |
997 |
709 |
55 |
0 |
0 |
| ODI |
0 |
75 |
33 |
506 |
869 |
212 |
2 |
0 |
| CDI |
0 |
26 |
4 |
338 |
1224 |
1467 |
266 |
50 |
| VCDI |
0 |
38 |
24 |
170 |
1154 |
8897 |
22533 |
67081 |
|
Date: 2025-03-08:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66326 |
16727 |
356 |
611 |
92 |
0 |
0 |
0 |
| OW |
17 |
1546 |
357 |
841 |
207 |
6 |
0 |
0 |
| VODI |
1 |
481 |
156 |
1117 |
659 |
65 |
0 |
0 |
| ODI |
0 |
101 |
68 |
648 |
851 |
227 |
8 |
0 |
| CDI |
0 |
21 |
27 |
377 |
1507 |
1203 |
209 |
71 |
| VCDI |
0 |
4 |
9 |
200 |
1186 |
7570 |
24281 |
66610 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66321 |
16780 |
371 |
708 |
104 |
0 |
0 |
0 |
| OW |
22 |
1474 |
320 |
766 |
221 |
11 |
0 |
0 |
| VODI |
1 |
488 |
179 |
1035 |
596 |
65 |
1 |
0 |
| ODI |
0 |
101 |
60 |
679 |
853 |
226 |
20 |
0 |
| CDI |
0 |
30 |
26 |
396 |
1501 |
1171 |
277 |
71 |
| VCDI |
0 |
7 |
17 |
210 |
1227 |
7598 |
24200 |
66610 |
|
Date: 2025-03-10:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66897 |
16435 |
450 |
553 |
55 |
0 |
0 |
0 |
| OW |
31 |
1480 |
542 |
899 |
184 |
6 |
0 |
0 |
| VODI |
0 |
211 |
169 |
1490 |
702 |
37 |
0 |
0 |
| ODI |
0 |
3 |
16 |
468 |
1414 |
352 |
15 |
0 |
| CDI |
0 |
0 |
0 |
213 |
1244 |
2597 |
455 |
39 |
| VCDI |
0 |
0 |
0 |
55 |
851 |
5481 |
20905 |
70494 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66915 |
15922 |
485 |
600 |
76 |
0 |
0 |
0 |
| OW |
13 |
1338 |
342 |
875 |
257 |
3 |
0 |
0 |
| VODI |
0 |
469 |
162 |
987 |
568 |
125 |
0 |
0 |
| ODI |
0 |
213 |
74 |
577 |
1001 |
386 |
12 |
0 |
| CDI |
0 |
168 |
87 |
313 |
1207 |
1713 |
497 |
53 |
| VCDI |
0 |
19 |
27 |
326 |
1341 |
6246 |
20866 |
70480 |
|
Date: 2025-03-12:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66474 |
16316 |
419 |
732 |
81 |
1 |
0 |
0 |
| OW |
59 |
1292 |
373 |
864 |
318 |
11 |
0 |
0 |
| VODI |
12 |
323 |
126 |
944 |
910 |
127 |
0 |
0 |
| ODI |
0 |
102 |
43 |
358 |
1054 |
474 |
27 |
0 |
| CDI |
0 |
59 |
43 |
254 |
1186 |
2471 |
678 |
63 |
| VCDI |
0 |
15 |
17 |
107 |
619 |
6063 |
21768 |
69960 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66429 |
15943 |
399 |
717 |
93 |
0 |
0 |
0 |
| OW |
64 |
1127 |
280 |
805 |
382 |
9 |
0 |
0 |
| VODI |
24 |
415 |
202 |
763 |
792 |
215 |
5 |
0 |
| ODI |
11 |
232 |
49 |
464 |
926 |
438 |
57 |
0 |
| CDI |
17 |
192 |
18 |
233 |
1067 |
1926 |
677 |
45 |
| VCDI |
0 |
198 |
73 |
277 |
908 |
6559 |
21734 |
69978 |
|
Date: 2025-03-14:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
65354 |
16723 |
435 |
637 |
111 |
0 |
0 |
0 |
| OW |
22 |
1270 |
335 |
968 |
361 |
14 |
0 |
0 |
| VODI |
0 |
257 |
182 |
907 |
933 |
216 |
0 |
0 |
| ODI |
0 |
74 |
23 |
430 |
917 |
496 |
37 |
3 |
| CDI |
0 |
60 |
17 |
165 |
1312 |
2779 |
1096 |
64 |
| VCDI |
0 |
48 |
42 |
252 |
580 |
8553 |
25494 |
63576 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
65283 |
16417 |
477 |
674 |
113 |
0 |
0 |
0 |
| OW |
62 |
1008 |
260 |
930 |
385 |
13 |
1 |
0 |
| VODI |
17 |
437 |
117 |
808 |
902 |
238 |
14 |
0 |
| ODI |
14 |
210 |
62 |
371 |
946 |
479 |
94 |
2 |
| CDI |
0 |
198 |
64 |
240 |
1089 |
2139 |
815 |
62 |
| VCDI |
0 |
162 |
54 |
336 |
779 |
9189 |
25703 |
63579 |
|
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