Validation of sea ice concentration - American sector
Reference date: 2025-12-04
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-11-28:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8226 |
1246 |
112 |
97 |
12 |
0 |
0 |
0 |
| OW |
22 |
204 |
71 |
132 |
152 |
9 |
0 |
0 |
| VODI |
22 |
147 |
30 |
118 |
134 |
72 |
1 |
0 |
| ODI |
4 |
139 |
52 |
217 |
213 |
205 |
48 |
0 |
| CDI |
0 |
74 |
30 |
183 |
474 |
588 |
237 |
0 |
| VCDI |
0 |
0 |
0 |
19 |
237 |
2569 |
14309 |
15442 |
|
|
Date: 2025-11-30:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
5385 |
3025 |
157 |
227 |
52 |
2 |
0 |
0 |
| OW |
27 |
221 |
50 |
185 |
163 |
82 |
0 |
0 |
| VODI |
1 |
192 |
46 |
118 |
169 |
104 |
10 |
0 |
| ODI |
0 |
142 |
46 |
173 |
229 |
177 |
38 |
0 |
| CDI |
0 |
135 |
42 |
129 |
372 |
1077 |
245 |
2 |
| VCDI |
0 |
0 |
0 |
6 |
70 |
2485 |
14486 |
15777 |
|
|
Date: 2025-12-02:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3647 |
4005 |
99 |
223 |
102 |
0 |
0 |
0 |
| OW |
25 |
141 |
45 |
79 |
252 |
4 |
0 |
0 |
| VODI |
6 |
130 |
41 |
129 |
262 |
118 |
0 |
0 |
| ODI |
0 |
319 |
45 |
201 |
305 |
184 |
14 |
0 |
| CDI |
0 |
125 |
20 |
134 |
477 |
727 |
182 |
2 |
| VCDI |
0 |
0 |
0 |
3 |
97 |
2383 |
13608 |
17713 |
|
|
Date: 2025-12-04:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3037 |
4117 |
119 |
120 |
25 |
1 |
0 |
0 |
| OW |
42 |
89 |
32 |
97 |
153 |
62 |
0 |
0 |
| VODI |
32 |
130 |
46 |
115 |
207 |
230 |
0 |
0 |
| ODI |
2 |
402 |
66 |
237 |
344 |
224 |
13 |
0 |
| CDI |
0 |
91 |
2 |
138 |
567 |
639 |
140 |
2 |
| VCDI |
0 |
0 |
0 |
26 |
118 |
1723 |
16060 |
16399 |
|
|
Date: 2025-12-06:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2834 |
4068 |
106 |
103 |
22 |
1 |
0 |
0 |
| OW |
61 |
102 |
31 |
74 |
33 |
12 |
0 |
0 |
| VODI |
31 |
179 |
50 |
133 |
199 |
141 |
0 |
0 |
| ODI |
10 |
415 |
51 |
227 |
460 |
406 |
23 |
0 |
| CDI |
2 |
17 |
4 |
48 |
483 |
803 |
243 |
0 |
| VCDI |
0 |
0 |
0 |
13 |
272 |
1456 |
12023 |
20711 |
|
|
Date: 2025-12-08:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2631 |
4057 |
117 |
106 |
33 |
2 |
0 |
0 |
| OW |
90 |
122 |
45 |
65 |
33 |
10 |
0 |
0 |
| VODI |
9 |
262 |
44 |
145 |
158 |
26 |
0 |
0 |
| ODI |
0 |
306 |
63 |
156 |
513 |
383 |
5 |
0 |
| CDI |
0 |
3 |
0 |
48 |
579 |
945 |
387 |
2 |
| VCDI |
0 |
0 |
0 |
8 |
325 |
1881 |
6937 |
25351 |
|
|
Date: 2025-12-10:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2851 |
3845 |
61 |
76 |
38 |
39 |
0 |
0 |
| OW |
73 |
166 |
17 |
34 |
11 |
25 |
1 |
0 |
| VODI |
29 |
221 |
48 |
99 |
49 |
51 |
3 |
0 |
| ODI |
1 |
151 |
56 |
145 |
233 |
357 |
4 |
0 |
| CDI |
0 |
18 |
17 |
90 |
396 |
1054 |
199 |
1 |
| VCDI |
0 |
1 |
0 |
12 |
181 |
1786 |
11968 |
21440 |
|
|
Date: 2025-12-12:
| Best estimate |
|
|
...observations not yet available
|
|
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