Validation of sea ice concentration - Full domain
Bulletin date: 2025-07-10
Data source: OSI SAF N.H. AMSR 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 |
80183 |
16784 |
151 |
114 |
41 |
6 |
0 |
0 |
| OW |
1403 |
5551 |
1043 |
1039 |
158 |
50 |
0 |
0 |
| VODI |
2964 |
883 |
620 |
2218 |
1328 |
168 |
10 |
0 |
| ODI |
0 |
158 |
106 |
1178 |
4799 |
1641 |
41 |
0 |
| CDI |
0 |
46 |
79 |
418 |
6178 |
12633 |
1205 |
0 |
| VCDI |
0 |
1 |
1 |
5 |
4252 |
17574 |
15780 |
1 |
|
...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 |
79046 |
18931 |
208 |
186 |
51 |
13 |
2 |
0 |
| OW |
1394 |
5318 |
765 |
1003 |
196 |
51 |
4 |
0 |
| VODI |
2928 |
1061 |
664 |
2077 |
1342 |
201 |
11 |
0 |
| ODI |
0 |
214 |
194 |
1467 |
4852 |
1322 |
30 |
0 |
| CDI |
0 |
99 |
83 |
536 |
7086 |
12183 |
939 |
0 |
| VCDI |
0 |
1 |
1 |
7 |
3459 |
19033 |
13666 |
186 |
|
...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 |
81812 |
20280 |
216 |
156 |
19 |
0 |
0 |
0 |
| OW |
1426 |
3864 |
1039 |
913 |
161 |
15 |
3 |
0 |
| VODI |
2844 |
290 |
602 |
3216 |
1420 |
44 |
3 |
0 |
| ODI |
0 |
32 |
42 |
706 |
6984 |
1054 |
9 |
0 |
| CDI |
0 |
2 |
6 |
168 |
7106 |
23563 |
614 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
673 |
13266 |
8259 |
0 |
|
...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 |
83955 |
18391 |
174 |
128 |
18 |
0 |
0 |
0 |
| OW |
1428 |
4081 |
806 |
834 |
165 |
6 |
0 |
0 |
| VODI |
2822 |
769 |
722 |
3012 |
1475 |
76 |
5 |
0 |
| ODI |
0 |
102 |
95 |
898 |
5594 |
1643 |
20 |
0 |
| CDI |
0 |
47 |
39 |
282 |
10455 |
22984 |
962 |
0 |
| VCDI |
0 |
0 |
0 |
12 |
4624 |
9254 |
4930 |
2 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
83911 |
18609 |
194 |
140 |
17 |
0 |
0 |
0 |
| OW |
1471 |
3857 |
784 |
845 |
155 |
8 |
0 |
0 |
| VODI |
2823 |
759 |
739 |
2928 |
1444 |
73 |
5 |
0 |
| ODI |
0 |
117 |
78 |
965 |
5661 |
1936 |
18 |
0 |
| CDI |
0 |
48 |
41 |
280 |
10606 |
22749 |
1033 |
0 |
| VCDI |
0 |
0 |
0 |
8 |
4448 |
9197 |
4861 |
2 |
|
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 |
85888 |
16318 |
129 |
99 |
27 |
1 |
0 |
0 |
| OW |
1439 |
4370 |
782 |
856 |
155 |
16 |
9 |
0 |
| VODI |
2799 |
1177 |
776 |
2969 |
1657 |
136 |
6 |
0 |
| ODI |
0 |
187 |
192 |
1222 |
4581 |
1876 |
499 |
0 |
| CDI |
0 |
81 |
61 |
375 |
6761 |
27404 |
2569 |
0 |
| VCDI |
0 |
2 |
2 |
11 |
745 |
11654 |
2979 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
85874 |
16526 |
163 |
120 |
31 |
1 |
0 |
0 |
| OW |
1452 |
4161 |
738 |
874 |
150 |
13 |
9 |
0 |
| VODI |
2800 |
1175 |
795 |
2894 |
1719 |
161 |
6 |
0 |
| ODI |
0 |
195 |
181 |
1230 |
4326 |
2234 |
506 |
0 |
| CDI |
0 |
76 |
63 |
398 |
6819 |
26835 |
2612 |
0 |
| VCDI |
0 |
2 |
2 |
16 |
881 |
11843 |
2929 |
0 |
|
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 |
85341 |
17601 |
194 |
140 |
56 |
7 |
0 |
0 |
| OW |
1448 |
4190 |
696 |
918 |
203 |
32 |
1 |
0 |
| VODI |
2776 |
1469 |
833 |
2710 |
1571 |
171 |
15 |
0 |
| ODI |
0 |
254 |
216 |
1414 |
4841 |
1424 |
89 |
0 |
| CDI |
0 |
127 |
82 |
488 |
9149 |
29210 |
2456 |
0 |
| VCDI |
0 |
3 |
3 |
16 |
710 |
8546 |
1410 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
85329 |
16964 |
150 |
88 |
28 |
9 |
0 |
0 |
| OW |
1461 |
4667 |
717 |
902 |
175 |
29 |
1 |
0 |
| VODI |
2775 |
1599 |
849 |
2776 |
1689 |
169 |
13 |
0 |
| ODI |
0 |
300 |
230 |
1450 |
5073 |
1641 |
101 |
0 |
| CDI |
0 |
111 |
76 |
456 |
8854 |
28555 |
2485 |
0 |
| VCDI |
0 |
3 |
2 |
14 |
711 |
8987 |
1371 |
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 |
86193 |
18672 |
173 |
116 |
12 |
4 |
0 |
0 |
| OW |
1613 |
4423 |
1098 |
1216 |
98 |
6 |
0 |
0 |
| VODI |
2525 |
508 |
813 |
3823 |
1429 |
67 |
0 |
0 |
| ODI |
0 |
14 |
41 |
1009 |
8912 |
1185 |
1 |
0 |
| CDI |
0 |
8 |
9 |
122 |
7732 |
31316 |
1916 |
0 |
| VCDI |
0 |
0 |
1 |
18 |
616 |
3205 |
1916 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
85984 |
16276 |
130 |
125 |
25 |
11 |
0 |
0 |
| OW |
1597 |
5025 |
682 |
1047 |
173 |
23 |
0 |
0 |
| VODI |
2750 |
1867 |
947 |
2764 |
1455 |
148 |
0 |
0 |
| ODI |
0 |
332 |
298 |
1821 |
5667 |
885 |
22 |
0 |
| CDI |
0 |
120 |
71 |
518 |
10831 |
26759 |
1922 |
0 |
| VCDI |
0 |
5 |
7 |
29 |
648 |
7957 |
1889 |
0 |
|
Date: 2025-07-18:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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