Validation of sea ice concentration - Full domain
Bulletin date: 2025-07-10
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-07-04:
| 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 |
104683 |
6819 |
1928 |
46 |
12 |
1 |
0 |
0 |
| OW |
1978 |
2598 |
2169 |
1601 |
56 |
13 |
0 |
0 |
| VODI |
143 |
213 |
3088 |
1597 |
471 |
50 |
1 |
1 |
| ODI |
8 |
50 |
4397 |
1478 |
1818 |
470 |
5 |
12 |
| CDI |
2 |
0 |
10534 |
2956 |
3447 |
3844 |
190 |
17 |
| VCDI |
0 |
0 |
6286 |
4848 |
5002 |
13659 |
6098 |
2154 |
|
...date precedes bulletin
|
Date: 2025-07-06:
| 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 |
98198 |
16201 |
147 |
160 |
40 |
6 |
0 |
0 |
| OW |
317 |
5001 |
710 |
1533 |
201 |
58 |
0 |
0 |
| VODI |
21 |
530 |
392 |
3123 |
1444 |
188 |
0 |
0 |
| ODI |
0 |
76 |
83 |
1471 |
6022 |
719 |
14 |
0 |
| CDI |
0 |
6 |
21 |
329 |
7874 |
12458 |
655 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
3117 |
17898 |
14441 |
1287 |
|
...date precedes bulletin
|
Date: 2025-07-08:
| 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 |
100923 |
17521 |
207 |
241 |
20 |
0 |
0 |
0 |
| OW |
233 |
3075 |
931 |
2027 |
93 |
6 |
0 |
0 |
| VODI |
15 |
154 |
194 |
3984 |
1455 |
34 |
0 |
0 |
| ODI |
0 |
3 |
0 |
492 |
8183 |
514 |
4 |
0 |
| CDI |
0 |
0 |
1 |
60 |
7327 |
24129 |
356 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
716 |
10431 |
11266 |
148 |
|
...date precedes bulletin
|
Date: 2025-07-10:
| 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 |
102220 |
16554 |
135 |
213 |
16 |
0 |
0 |
0 |
| OW |
224 |
3360 |
762 |
1710 |
182 |
0 |
0 |
0 |
| VODI |
10 |
500 |
310 |
3799 |
1693 |
25 |
0 |
0 |
| ODI |
0 |
17 |
27 |
763 |
7058 |
893 |
14 |
0 |
| CDI |
0 |
0 |
3 |
200 |
11094 |
22721 |
1102 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
3719 |
9271 |
6146 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
102188 |
16748 |
162 |
221 |
14 |
0 |
0 |
0 |
| OW |
257 |
3186 |
731 |
1700 |
162 |
0 |
0 |
0 |
| VODI |
9 |
471 |
309 |
3756 |
1698 |
32 |
0 |
0 |
| ODI |
0 |
25 |
33 |
800 |
7027 |
1237 |
12 |
0 |
| CDI |
0 |
1 |
2 |
205 |
11323 |
22395 |
1199 |
0 |
| VCDI |
0 |
0 |
0 |
5 |
3538 |
9246 |
6051 |
0 |
|
Date: 2025-07-12:
| 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 |
104490 |
14242 |
89 |
140 |
14 |
1 |
0 |
0 |
| OW |
209 |
4185 |
672 |
1303 |
111 |
12 |
0 |
0 |
| VODI |
9 |
847 |
488 |
3936 |
1710 |
103 |
0 |
0 |
| ODI |
0 |
59 |
27 |
1281 |
5556 |
1723 |
249 |
0 |
| CDI |
0 |
16 |
15 |
289 |
6717 |
28108 |
2464 |
1 |
| VCDI |
0 |
0 |
0 |
19 |
831 |
11609 |
3214 |
4 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
104484 |
14458 |
115 |
153 |
18 |
1 |
0 |
0 |
| OW |
218 |
3990 |
626 |
1323 |
115 |
10 |
0 |
0 |
| VODI |
6 |
816 |
506 |
3906 |
1765 |
126 |
0 |
0 |
| ODI |
0 |
69 |
31 |
1266 |
5198 |
2128 |
288 |
0 |
| CDI |
0 |
16 |
13 |
297 |
6899 |
27510 |
2446 |
0 |
| VCDI |
0 |
0 |
0 |
23 |
944 |
11781 |
3193 |
5 |
|
Date: 2025-07-14:
| 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 |
104246 |
16242 |
184 |
196 |
6 |
0 |
0 |
0 |
| OW |
146 |
3977 |
1194 |
2400 |
84 |
1 |
0 |
0 |
| VODI |
2 |
93 |
170 |
4532 |
1628 |
10 |
0 |
0 |
| ODI |
0 |
3 |
2 |
472 |
10513 |
434 |
0 |
0 |
| CDI |
0 |
1 |
0 |
36 |
5659 |
34124 |
1135 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
671 |
3124 |
3451 |
5 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
104129 |
14710 |
113 |
145 |
14 |
0 |
0 |
0 |
| OW |
258 |
4348 |
752 |
1313 |
171 |
4 |
0 |
0 |
| VODI |
7 |
1126 |
592 |
3954 |
1694 |
95 |
0 |
0 |
| ODI |
0 |
104 |
68 |
1810 |
5818 |
1283 |
41 |
0 |
| CDI |
0 |
26 |
24 |
397 |
10029 |
27595 |
2737 |
5 |
| VCDI |
0 |
2 |
1 |
19 |
835 |
8716 |
1808 |
0 |
|
Date: 2025-07-16:
| 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 |
107680 |
13232 |
101 |
185 |
6 |
0 |
0 |
0 |
| OW |
635 |
3783 |
1064 |
2143 |
116 |
0 |
0 |
0 |
| VODI |
13 |
295 |
313 |
4641 |
1716 |
10 |
0 |
0 |
| ODI |
0 |
7 |
7 |
774 |
10127 |
349 |
0 |
0 |
| CDI |
0 |
2 |
1 |
46 |
7395 |
32398 |
1860 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
781 |
2783 |
2268 |
12 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
107290 |
11462 |
82 |
219 |
27 |
0 |
0 |
0 |
| OW |
976 |
4378 |
569 |
1327 |
210 |
0 |
0 |
0 |
| VODI |
62 |
1325 |
719 |
3695 |
1752 |
44 |
0 |
0 |
| ODI |
0 |
127 |
85 |
2125 |
6465 |
489 |
6 |
0 |
| CDI |
0 |
26 |
28 |
408 |
10852 |
27327 |
1837 |
1 |
| VCDI |
0 |
1 |
3 |
15 |
835 |
7680 |
2285 |
11 |
|
Date: 2025-07-18:
| 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 |
109217 |
12338 |
106 |
131 |
7 |
0 |
0 |
0 |
| OW |
766 |
4126 |
959 |
1948 |
107 |
1 |
0 |
0 |
| VODI |
28 |
429 |
418 |
4720 |
1936 |
10 |
0 |
0 |
| ODI |
0 |
19 |
5 |
995 |
8222 |
1260 |
0 |
0 |
| CDI |
0 |
24 |
0 |
82 |
7505 |
30361 |
4663 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
660 |
1993 |
1704 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
108642 |
10204 |
76 |
224 |
18 |
0 |
0 |
0 |
| OW |
1279 |
4691 |
592 |
1520 |
217 |
5 |
0 |
0 |
| VODI |
90 |
1803 |
655 |
3439 |
1950 |
80 |
0 |
0 |
| ODI |
0 |
179 |
142 |
2226 |
5784 |
738 |
14 |
0 |
| CDI |
0 |
47 |
23 |
443 |
9558 |
26336 |
3686 |
0 |
| VCDI |
0 |
12 |
0 |
27 |
910 |
6466 |
2667 |
0 |
|
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