Validation of sea ice concentration - Full domain
Bulletin date: 2025-02-20
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-02-14:
| 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 |
68551 |
17440 |
387 |
349 |
15 |
0 |
0 |
0 |
| OW |
21 |
1174 |
349 |
962 |
129 |
1 |
0 |
0 |
| VODI |
0 |
331 |
184 |
1179 |
612 |
49 |
0 |
0 |
| ODI |
0 |
83 |
45 |
511 |
944 |
377 |
9 |
0 |
| CDI |
0 |
36 |
35 |
256 |
1229 |
2067 |
706 |
63 |
| VCDI |
0 |
26 |
20 |
196 |
701 |
8082 |
27127 |
60497 |
|
...date precedes bulletin
|
Date: 2025-02-16:
| 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 |
67844 |
17448 |
449 |
626 |
50 |
0 |
0 |
0 |
| OW |
2 |
1067 |
363 |
860 |
203 |
0 |
0 |
0 |
| VODI |
0 |
349 |
179 |
930 |
591 |
44 |
0 |
0 |
| ODI |
0 |
93 |
66 |
559 |
966 |
267 |
2 |
5 |
| CDI |
0 |
46 |
42 |
312 |
1385 |
1470 |
477 |
106 |
| VCDI |
0 |
3 |
16 |
156 |
1045 |
6974 |
26460 |
63288 |
|
...date precedes bulletin
|
Date: 2025-02-18:
| 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 |
67704 |
17567 |
476 |
389 |
37 |
0 |
0 |
0 |
| OW |
26 |
1296 |
435 |
839 |
81 |
0 |
0 |
0 |
| VODI |
0 |
236 |
166 |
1227 |
563 |
6 |
0 |
0 |
| ODI |
0 |
32 |
50 |
392 |
1311 |
210 |
15 |
0 |
| CDI |
0 |
16 |
20 |
202 |
1121 |
1574 |
592 |
24 |
| VCDI |
0 |
2 |
1 |
142 |
736 |
6925 |
23353 |
66977 |
|
...date precedes bulletin
|
Date: 2025-02-20:
| 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 |
68187 |
16931 |
325 |
310 |
12 |
0 |
0 |
0 |
| OW |
0 |
1183 |
388 |
859 |
134 |
0 |
0 |
0 |
| VODI |
0 |
284 |
155 |
1008 |
695 |
19 |
0 |
0 |
| ODI |
0 |
53 |
52 |
412 |
1001 |
319 |
17 |
1 |
| CDI |
0 |
19 |
32 |
243 |
1074 |
1493 |
880 |
42 |
| VCDI |
0 |
2 |
7 |
165 |
1032 |
7124 |
25525 |
64760 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68176 |
16891 |
342 |
348 |
15 |
0 |
0 |
0 |
| OW |
11 |
1211 |
366 |
835 |
141 |
0 |
0 |
0 |
| VODI |
0 |
288 |
156 |
956 |
680 |
20 |
2 |
0 |
| ODI |
0 |
59 |
57 |
411 |
984 |
324 |
17 |
2 |
| CDI |
0 |
20 |
32 |
275 |
1062 |
1495 |
964 |
49 |
| VCDI |
0 |
3 |
6 |
172 |
1066 |
7116 |
25439 |
64752 |
|
Date: 2025-02-22:
| 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 |
68115 |
16781 |
287 |
278 |
9 |
0 |
0 |
0 |
| OW |
92 |
1200 |
400 |
728 |
125 |
13 |
0 |
0 |
| VODI |
0 |
313 |
176 |
926 |
626 |
76 |
0 |
0 |
| ODI |
0 |
77 |
65 |
468 |
821 |
382 |
32 |
0 |
| CDI |
0 |
41 |
31 |
320 |
1145 |
1488 |
595 |
25 |
| VCDI |
0 |
7 |
15 |
147 |
911 |
7101 |
25030 |
65897 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68101 |
16818 |
328 |
302 |
7 |
0 |
0 |
0 |
| OW |
106 |
1172 |
352 |
697 |
141 |
12 |
0 |
0 |
| VODI |
0 |
300 |
181 |
919 |
602 |
82 |
0 |
0 |
| ODI |
0 |
75 |
61 |
463 |
790 |
359 |
31 |
0 |
| CDI |
0 |
42 |
32 |
321 |
1144 |
1572 |
755 |
29 |
| VCDI |
0 |
12 |
20 |
165 |
953 |
7035 |
24871 |
65893 |
|
Date: 2025-02-24:
| 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 |
69099 |
15864 |
256 |
263 |
31 |
0 |
0 |
0 |
| OW |
6 |
1282 |
516 |
743 |
138 |
23 |
0 |
0 |
| VODI |
0 |
202 |
125 |
1505 |
655 |
52 |
0 |
0 |
| ODI |
0 |
26 |
21 |
394 |
1251 |
358 |
4 |
2 |
| CDI |
0 |
4 |
7 |
210 |
1254 |
2843 |
267 |
99 |
| VCDI |
0 |
0 |
2 |
94 |
584 |
7279 |
23935 |
65349 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68978 |
15662 |
247 |
225 |
8 |
0 |
0 |
0 |
| OW |
127 |
1156 |
336 |
620 |
190 |
12 |
0 |
0 |
| VODI |
0 |
371 |
205 |
1026 |
479 |
91 |
2 |
0 |
| ODI |
0 |
108 |
68 |
662 |
820 |
289 |
9 |
0 |
| CDI |
0 |
78 |
59 |
423 |
1534 |
2138 |
354 |
63 |
| VCDI |
0 |
3 |
12 |
253 |
882 |
8025 |
23841 |
65387 |
|
Date: 2025-02-26:
| 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 |
68400 |
16311 |
269 |
232 |
17 |
0 |
0 |
0 |
| OW |
2 |
1439 |
451 |
717 |
110 |
0 |
0 |
0 |
| VODI |
0 |
456 |
252 |
1191 |
667 |
26 |
0 |
0 |
| ODI |
0 |
99 |
55 |
527 |
1093 |
352 |
0 |
0 |
| CDI |
0 |
36 |
20 |
284 |
1385 |
2064 |
150 |
23 |
| VCDI |
0 |
30 |
25 |
223 |
930 |
8175 |
21664 |
67068 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68316 |
15898 |
207 |
210 |
15 |
0 |
0 |
0 |
| OW |
86 |
1480 |
318 |
566 |
142 |
0 |
0 |
0 |
| VODI |
0 |
608 |
301 |
866 |
580 |
112 |
0 |
0 |
| ODI |
0 |
188 |
138 |
683 |
829 |
415 |
12 |
0 |
| CDI |
0 |
108 |
61 |
529 |
1555 |
1660 |
312 |
33 |
| VCDI |
0 |
89 |
47 |
320 |
1081 |
8430 |
21490 |
67058 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67489 |
16442 |
338 |
249 |
15 |
0 |
0 |
0 |
| OW |
22 |
1498 |
330 |
701 |
131 |
7 |
0 |
0 |
| VODI |
0 |
701 |
265 |
954 |
560 |
145 |
0 |
0 |
| ODI |
0 |
262 |
132 |
612 |
726 |
438 |
22 |
0 |
| CDI |
0 |
141 |
79 |
477 |
1377 |
1617 |
298 |
9 |
| VCDI |
0 |
64 |
48 |
331 |
1113 |
7849 |
20360 |
68941 |
|
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