Validation of sea ice concentration - American sector
Reference date: 2025-11-20
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-11-14:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9100 |
2807 |
202 |
221 |
55 |
0 |
0 |
0 |
| OW |
15 |
249 |
56 |
138 |
102 |
13 |
0 |
0 |
| VODI |
2 |
443 |
95 |
277 |
134 |
98 |
0 |
0 |
| ODI |
0 |
92 |
54 |
169 |
315 |
260 |
18 |
0 |
| CDI |
0 |
3 |
3 |
64 |
192 |
720 |
187 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
104 |
2059 |
11999 |
15599 |
|
|
Date: 2025-11-16:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8901 |
2728 |
202 |
271 |
84 |
3 |
0 |
0 |
| OW |
21 |
187 |
41 |
180 |
139 |
13 |
0 |
0 |
| VODI |
6 |
165 |
70 |
213 |
209 |
91 |
1 |
0 |
| ODI |
0 |
53 |
35 |
172 |
524 |
193 |
11 |
0 |
| CDI |
0 |
6 |
6 |
32 |
294 |
749 |
134 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
93 |
1827 |
13111 |
15082 |
|
|
Date: 2025-11-18:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8595 |
2386 |
169 |
300 |
178 |
12 |
0 |
0 |
| OW |
0 |
175 |
39 |
98 |
219 |
54 |
0 |
0 |
| VODI |
0 |
210 |
94 |
196 |
286 |
129 |
4 |
0 |
| ODI |
0 |
30 |
21 |
92 |
560 |
257 |
14 |
0 |
| CDI |
0 |
9 |
7 |
53 |
341 |
1002 |
192 |
2 |
| VCDI |
0 |
0 |
0 |
3 |
84 |
1959 |
11656 |
16422 |
|
|
Date: 2025-11-20:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8505 |
2274 |
138 |
227 |
63 |
2 |
0 |
0 |
| OW |
0 |
247 |
43 |
129 |
168 |
32 |
0 |
0 |
| VODI |
0 |
312 |
58 |
156 |
149 |
46 |
0 |
0 |
| ODI |
0 |
108 |
88 |
282 |
387 |
96 |
11 |
0 |
| CDI |
0 |
6 |
8 |
72 |
440 |
1207 |
111 |
1 |
| VCDI |
0 |
0 |
0 |
3 |
87 |
2611 |
13076 |
14705 |
|
|
Date: 2025-11-22:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8463 |
1875 |
181 |
243 |
65 |
1 |
0 |
0 |
| OW |
0 |
184 |
37 |
130 |
229 |
52 |
2 |
0 |
| VODI |
0 |
244 |
71 |
149 |
142 |
142 |
4 |
0 |
| ODI |
0 |
42 |
45 |
249 |
371 |
186 |
15 |
0 |
| CDI |
0 |
1 |
0 |
42 |
579 |
1359 |
184 |
3 |
| VCDI |
0 |
0 |
0 |
10 |
97 |
2152 |
12971 |
15328 |
|
|
Date: 2025-11-24:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8445 |
1600 |
167 |
222 |
132 |
54 |
0 |
0 |
| OW |
1 |
155 |
40 |
101 |
135 |
108 |
0 |
0 |
| VODI |
0 |
181 |
68 |
225 |
167 |
203 |
61 |
0 |
| ODI |
0 |
9 |
17 |
134 |
432 |
343 |
42 |
0 |
| CDI |
0 |
0 |
0 |
13 |
530 |
1315 |
402 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
200 |
1374 |
9717 |
19251 |
|
|
Date: 2025-11-26:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8437 |
1481 |
130 |
173 |
69 |
2 |
0 |
0 |
| OW |
8 |
157 |
53 |
117 |
142 |
29 |
0 |
0 |
| VODI |
0 |
169 |
55 |
146 |
152 |
103 |
57 |
0 |
| ODI |
0 |
77 |
57 |
221 |
333 |
233 |
80 |
0 |
| CDI |
0 |
3 |
17 |
89 |
317 |
885 |
485 |
0 |
| VCDI |
0 |
0 |
0 |
8 |
218 |
1443 |
11044 |
18858 |
|
|
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 |
8228 |
1234 |
113 |
95 |
10 |
0 |
0 |
0 |
| OW |
21 |
210 |
70 |
134 |
154 |
9 |
0 |
0 |
| VODI |
21 |
151 |
30 |
118 |
137 |
71 |
2 |
0 |
| ODI |
5 |
140 |
53 |
217 |
210 |
205 |
47 |
0 |
| CDI |
0 |
75 |
29 |
184 |
474 |
589 |
240 |
0 |
| VCDI |
0 |
0 |
0 |
18 |
237 |
2569 |
14306 |
15442 |
|
|
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