Validation of sea ice concentration - American sector
Bulletin date: 2025-11-18
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-11-18:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8585 |
2175 |
9 |
58 |
25 |
0 |
0 |
0 |
| OW |
4 |
146 |
4 |
25 |
12 |
0 |
0 |
0 |
| VODI |
2 |
292 |
6 |
72 |
47 |
6 |
0 |
0 |
| ODI |
0 |
198 |
18 |
172 |
153 |
38 |
4 |
0 |
| CDI |
0 |
147 |
12 |
231 |
388 |
225 |
170 |
4 |
| VCDI |
0 |
69 |
6 |
160 |
964 |
3053 |
13888 |
14189 |
|
Date: 2025-11-20:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8507 |
2238 |
13 |
127 |
85 |
17 |
0 |
0 |
| OW |
1 |
119 |
6 |
26 |
10 |
7 |
0 |
0 |
| VODI |
1 |
215 |
8 |
50 |
19 |
28 |
1 |
0 |
| ODI |
0 |
204 |
11 |
90 |
53 |
36 |
2 |
0 |
| CDI |
0 |
188 |
3 |
220 |
161 |
178 |
146 |
19 |
| VCDI |
0 |
192 |
12 |
339 |
935 |
3676 |
13922 |
13692 |
|
Date: 2025-11-22:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8455 |
2070 |
31 |
212 |
167 |
102 |
16 |
0 |
| OW |
3 |
69 |
2 |
30 |
15 |
26 |
0 |
0 |
| VODI |
0 |
143 |
4 |
64 |
41 |
47 |
2 |
0 |
| ODI |
0 |
99 |
6 |
72 |
47 |
69 |
5 |
0 |
| CDI |
0 |
104 |
10 |
159 |
187 |
251 |
255 |
1 |
| VCDI |
0 |
91 |
13 |
230 |
994 |
3330 |
13465 |
14670 |
|
Date: 2025-11-24:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8464 |
1817 |
26 |
253 |
219 |
279 |
50 |
0 |
| OW |
4 |
56 |
2 |
27 |
22 |
42 |
7 |
0 |
| VODI |
0 |
99 |
0 |
48 |
30 |
70 |
20 |
0 |
| ODI |
0 |
79 |
6 |
53 |
61 |
85 |
20 |
0 |
| CDI |
0 |
56 |
3 |
117 |
161 |
332 |
401 |
30 |
| VCDI |
0 |
44 |
4 |
173 |
1002 |
2586 |
11263 |
17546 |
|
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