Validation of sea ice concentration - American sector
Bulletin date: 2025-06-12
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-06-06:
| 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 |
10495 |
3217 |
79 |
75 |
2 |
2 |
0 |
0 |
| OW |
0 |
1287 |
186 |
452 |
68 |
15 |
0 |
0 |
| VODI |
0 |
206 |
109 |
944 |
603 |
125 |
0 |
0 |
| ODI |
0 |
14 |
28 |
521 |
897 |
426 |
64 |
0 |
| CDI |
0 |
6 |
7 |
186 |
1662 |
4292 |
2003 |
7 |
| VCDI |
0 |
2 |
3 |
29 |
443 |
2344 |
15006 |
15426 |
|
...date precedes bulletin
|
Date: 2025-06-08:
| 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 |
11998 |
1985 |
63 |
94 |
8 |
0 |
0 |
0 |
| OW |
309 |
816 |
178 |
576 |
122 |
3 |
0 |
0 |
| VODI |
0 |
226 |
93 |
987 |
763 |
74 |
3 |
0 |
| ODI |
0 |
21 |
28 |
623 |
923 |
401 |
47 |
1 |
| CDI |
0 |
11 |
12 |
279 |
1686 |
4599 |
1517 |
7 |
| VCDI |
0 |
2 |
3 |
32 |
201 |
2401 |
12554 |
17585 |
|
...date precedes bulletin
|
Date: 2025-06-10:
| 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 |
11404 |
3163 |
95 |
89 |
15 |
0 |
0 |
0 |
| OW |
0 |
942 |
228 |
539 |
110 |
0 |
0 |
0 |
| VODI |
0 |
165 |
125 |
1645 |
697 |
38 |
1 |
0 |
| ODI |
0 |
12 |
7 |
327 |
1841 |
491 |
26 |
0 |
| CDI |
0 |
2 |
0 |
56 |
1342 |
4186 |
495 |
5 |
| VCDI |
0 |
0 |
0 |
0 |
128 |
2483 |
16207 |
14367 |
|
...date precedes bulletin
|
Date: 2025-06-12:
| 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 |
12450 |
2434 |
50 |
142 |
14 |
0 |
0 |
0 |
| OW |
54 |
1187 |
266 |
457 |
84 |
7 |
0 |
0 |
| VODI |
0 |
350 |
215 |
1382 |
697 |
90 |
3 |
0 |
| ODI |
0 |
31 |
23 |
417 |
992 |
919 |
33 |
0 |
| CDI |
0 |
17 |
12 |
163 |
1124 |
3439 |
1646 |
4 |
| VCDI |
0 |
0 |
0 |
6 |
452 |
8408 |
12171 |
11492 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12445 |
2510 |
53 |
137 |
13 |
0 |
0 |
0 |
| OW |
59 |
1108 |
273 |
468 |
70 |
7 |
0 |
0 |
| VODI |
0 |
348 |
198 |
1369 |
669 |
92 |
2 |
0 |
| ODI |
0 |
36 |
24 |
400 |
950 |
875 |
35 |
0 |
| CDI |
0 |
17 |
18 |
187 |
1197 |
3502 |
1835 |
3 |
| VCDI |
0 |
0 |
0 |
6 |
464 |
8387 |
11981 |
11493 |
|
Date: 2025-06-14:
| 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 |
12665 |
2466 |
57 |
71 |
12 |
0 |
0 |
0 |
| OW |
98 |
1342 |
222 |
574 |
116 |
3 |
0 |
0 |
| VODI |
1 |
630 |
154 |
1241 |
710 |
47 |
1 |
0 |
| ODI |
0 |
34 |
30 |
547 |
1288 |
461 |
19 |
0 |
| CDI |
0 |
40 |
25 |
183 |
1659 |
3411 |
1060 |
0 |
| VCDI |
0 |
0 |
0 |
33 |
2233 |
9605 |
11466 |
8727 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12670 |
2525 |
48 |
91 |
14 |
0 |
0 |
0 |
| OW |
91 |
1300 |
224 |
569 |
128 |
6 |
0 |
0 |
| VODI |
2 |
608 |
161 |
1206 |
630 |
44 |
4 |
0 |
| ODI |
1 |
47 |
28 |
530 |
1249 |
507 |
21 |
0 |
| CDI |
0 |
32 |
27 |
217 |
1753 |
3373 |
1201 |
2 |
| VCDI |
0 |
0 |
0 |
36 |
2244 |
9597 |
11320 |
8725 |
|
Date: 2025-06-16:
| 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 |
13010 |
3133 |
43 |
37 |
14 |
0 |
0 |
0 |
| OW |
28 |
1875 |
450 |
454 |
70 |
0 |
0 |
0 |
| VODI |
2 |
95 |
56 |
1488 |
486 |
11 |
0 |
0 |
| ODI |
0 |
11 |
5 |
196 |
1418 |
247 |
4 |
0 |
| CDI |
0 |
0 |
0 |
43 |
848 |
7352 |
309 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3398 |
7507 |
10597 |
8044 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12942 |
2629 |
44 |
49 |
24 |
0 |
0 |
0 |
| OW |
95 |
1623 |
250 |
504 |
149 |
9 |
0 |
0 |
| VODI |
3 |
736 |
147 |
881 |
624 |
119 |
4 |
0 |
| ODI |
0 |
91 |
74 |
482 |
787 |
912 |
48 |
0 |
| CDI |
0 |
35 |
39 |
286 |
1040 |
4288 |
1589 |
0 |
| VCDI |
0 |
0 |
0 |
16 |
3610 |
9789 |
9269 |
8044 |
|
Date: 2025-06-18:
| 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 |
12999 |
3415 |
42 |
79 |
8 |
0 |
0 |
0 |
| OW |
81 |
2115 |
299 |
345 |
54 |
0 |
0 |
0 |
| VODI |
8 |
281 |
152 |
1251 |
469 |
31 |
0 |
0 |
| ODI |
0 |
9 |
10 |
400 |
1523 |
212 |
20 |
0 |
| CDI |
0 |
0 |
0 |
38 |
2074 |
4372 |
679 |
215 |
| VCDI |
0 |
0 |
0 |
0 |
324 |
9492 |
8090 |
12144 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12961 |
2848 |
48 |
83 |
40 |
0 |
0 |
0 |
| OW |
102 |
1911 |
200 |
428 |
122 |
13 |
0 |
0 |
| VODI |
25 |
833 |
134 |
748 |
573 |
152 |
12 |
0 |
| ODI |
0 |
162 |
75 |
579 |
1300 |
382 |
58 |
0 |
| CDI |
0 |
66 |
43 |
257 |
2001 |
3280 |
963 |
117 |
| VCDI |
0 |
0 |
3 |
18 |
416 |
10280 |
7756 |
12242 |
|
Date: 2025-06-20:
| 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 |
14411 |
2515 |
42 |
77 |
5 |
0 |
0 |
0 |
| OW |
225 |
1993 |
188 |
274 |
83 |
2 |
0 |
0 |
| VODI |
29 |
418 |
233 |
1065 |
367 |
48 |
9 |
0 |
| ODI |
2 |
12 |
28 |
575 |
1748 |
319 |
45 |
0 |
| CDI |
0 |
0 |
0 |
109 |
2227 |
3260 |
1078 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1659 |
11023 |
12369 |
4793 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14284 |
1744 |
45 |
66 |
58 |
1 |
0 |
0 |
| OW |
331 |
1981 |
141 |
402 |
134 |
16 |
4 |
0 |
| VODI |
51 |
945 |
159 |
695 |
444 |
146 |
22 |
0 |
| ODI |
1 |
183 |
91 |
566 |
1597 |
278 |
45 |
0 |
| CDI |
0 |
85 |
55 |
363 |
2205 |
2472 |
1706 |
237 |
| VCDI |
0 |
0 |
0 |
8 |
1651 |
11739 |
11724 |
4556 |
|
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