Validation of sea ice concentration - Full domain
Bulletin date: 2025-06-12
Data source: OSI SAF N.H. AMSR 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 |
66932 |
12693 |
51 |
20 |
1 |
1 |
0 |
0 |
| OW |
907 |
4601 |
707 |
729 |
115 |
25 |
2 |
0 |
| VODI |
3511 |
1322 |
716 |
2369 |
1473 |
188 |
31 |
0 |
| ODI |
0 |
174 |
214 |
1339 |
3562 |
1301 |
232 |
0 |
| CDI |
0 |
69 |
65 |
543 |
3482 |
11633 |
4908 |
14 |
| VCDI |
0 |
26 |
25 |
58 |
472 |
4552 |
33589 |
18158 |
|
...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 |
67273 |
12764 |
60 |
41 |
6 |
0 |
1 |
0 |
| OW |
916 |
4680 |
639 |
867 |
166 |
15 |
1 |
0 |
| VODI |
3500 |
1549 |
732 |
2344 |
1575 |
182 |
18 |
0 |
| ODI |
7 |
330 |
281 |
1581 |
3316 |
1223 |
184 |
0 |
| CDI |
0 |
121 |
100 |
687 |
3779 |
10940 |
5239 |
7 |
| VCDI |
0 |
23 |
24 |
72 |
249 |
4957 |
31077 |
19284 |
|
...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 |
66788 |
15281 |
138 |
77 |
3 |
0 |
1 |
0 |
| OW |
932 |
4079 |
770 |
812 |
103 |
7 |
1 |
0 |
| VODI |
3481 |
1041 |
830 |
3379 |
1555 |
93 |
10 |
0 |
| ODI |
0 |
90 |
94 |
1094 |
4391 |
1741 |
67 |
0 |
| CDI |
0 |
62 |
55 |
385 |
2368 |
10591 |
3647 |
0 |
| VCDI |
0 |
1 |
0 |
39 |
323 |
5246 |
33614 |
17621 |
|
...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 |
67594 |
15316 |
114 |
85 |
7 |
0 |
1 |
0 |
| OW |
938 |
4412 |
746 |
779 |
146 |
14 |
1 |
0 |
| VODI |
3486 |
1248 |
873 |
3311 |
1499 |
151 |
26 |
0 |
| ODI |
0 |
151 |
128 |
1120 |
3203 |
1845 |
204 |
0 |
| CDI |
0 |
130 |
84 |
385 |
2047 |
9497 |
5446 |
3 |
| VCDI |
0 |
0 |
3 |
33 |
906 |
10660 |
27710 |
16508 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67594 |
15618 |
123 |
101 |
10 |
0 |
1 |
0 |
| OW |
938 |
4130 |
757 |
780 |
146 |
15 |
1 |
0 |
| VODI |
3486 |
1204 |
853 |
3252 |
1468 |
134 |
24 |
0 |
| ODI |
0 |
170 |
110 |
1136 |
3141 |
1718 |
185 |
0 |
| CDI |
0 |
135 |
99 |
404 |
2134 |
9630 |
5512 |
10 |
| VCDI |
0 |
0 |
6 |
40 |
909 |
10670 |
27665 |
16501 |
|
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 |
68094 |
15281 |
175 |
103 |
11 |
0 |
1 |
0 |
| OW |
1032 |
4541 |
776 |
831 |
163 |
13 |
0 |
0 |
| VODI |
3323 |
1576 |
802 |
3072 |
1605 |
201 |
34 |
0 |
| ODI |
0 |
200 |
190 |
1260 |
3054 |
1463 |
241 |
0 |
| CDI |
0 |
151 |
90 |
457 |
2705 |
7948 |
5713 |
37 |
| VCDI |
0 |
6 |
8 |
40 |
2777 |
12170 |
26042 |
14624 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68094 |
15590 |
193 |
133 |
6 |
0 |
1 |
0 |
| OW |
1035 |
4275 |
766 |
853 |
181 |
17 |
0 |
0 |
| VODI |
3320 |
1510 |
798 |
2933 |
1439 |
209 |
29 |
0 |
| ODI |
0 |
214 |
172 |
1313 |
3184 |
1408 |
247 |
0 |
| CDI |
0 |
154 |
101 |
482 |
2728 |
7838 |
6199 |
90 |
| VCDI |
0 |
12 |
11 |
49 |
2777 |
12323 |
25555 |
14571 |
|
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 |
68948 |
16431 |
237 |
122 |
16 |
0 |
1 |
0 |
| OW |
1076 |
4630 |
1063 |
909 |
55 |
4 |
0 |
0 |
| VODI |
3301 |
765 |
773 |
3467 |
1325 |
82 |
9 |
0 |
| ODI |
0 |
73 |
68 |
965 |
3175 |
1603 |
72 |
3 |
| CDI |
0 |
15 |
34 |
201 |
1802 |
10411 |
2430 |
1 |
| VCDI |
0 |
0 |
0 |
3 |
2882 |
9861 |
33277 |
10720 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68955 |
14957 |
205 |
116 |
11 |
0 |
1 |
0 |
| OW |
1067 |
4580 |
799 |
898 |
164 |
11 |
1 |
0 |
| VODI |
3303 |
1859 |
839 |
2659 |
1325 |
322 |
45 |
0 |
| ODI |
0 |
320 |
212 |
1401 |
2385 |
2083 |
404 |
0 |
| CDI |
0 |
188 |
113 |
555 |
2067 |
7719 |
7679 |
24 |
| VCDI |
0 |
10 |
7 |
38 |
3303 |
11826 |
27659 |
10700 |
|
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 |
69520 |
16466 |
179 |
90 |
5 |
2 |
0 |
0 |
| OW |
1066 |
5175 |
888 |
731 |
69 |
7 |
1 |
0 |
| VODI |
3292 |
1253 |
1001 |
3106 |
1295 |
84 |
6 |
0 |
| ODI |
0 |
104 |
125 |
1063 |
3112 |
1162 |
83 |
0 |
| CDI |
0 |
26 |
44 |
359 |
3458 |
7478 |
2773 |
41 |
| VCDI |
0 |
0 |
0 |
12 |
497 |
12317 |
31666 |
12254 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69520 |
14913 |
177 |
96 |
11 |
1 |
0 |
0 |
| OW |
1070 |
5209 |
768 |
821 |
166 |
20 |
0 |
0 |
| VODI |
3288 |
2217 |
805 |
2339 |
1338 |
317 |
85 |
0 |
| ODI |
0 |
440 |
349 |
1394 |
2877 |
1427 |
335 |
0 |
| CDI |
0 |
234 |
126 |
659 |
3172 |
6628 |
7059 |
276 |
| VCDI |
0 |
11 |
12 |
52 |
872 |
12657 |
27050 |
12019 |
|
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 |
71089 |
15694 |
109 |
48 |
3 |
0 |
0 |
0 |
| OW |
1170 |
5286 |
768 |
679 |
66 |
3 |
0 |
0 |
| VODI |
3281 |
1781 |
907 |
2724 |
1191 |
116 |
29 |
0 |
| ODI |
0 |
182 |
200 |
1255 |
3068 |
1047 |
236 |
0 |
| CDI |
0 |
56 |
74 |
514 |
3301 |
7268 |
3158 |
0 |
| VCDI |
0 |
3 |
7 |
42 |
1927 |
14596 |
31289 |
7643 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70920 |
13938 |
143 |
96 |
9 |
1 |
0 |
0 |
| OW |
1322 |
5670 |
668 |
785 |
151 |
17 |
9 |
0 |
| VODI |
3298 |
2481 |
748 |
2161 |
1345 |
344 |
77 |
0 |
| ODI |
0 |
625 |
326 |
1347 |
2885 |
1209 |
468 |
0 |
| CDI |
0 |
274 |
162 |
798 |
3098 |
6852 |
7184 |
115 |
| VCDI |
0 |
14 |
18 |
75 |
2068 |
14607 |
26974 |
7528 |
|
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