Validation of sea ice concentration - American sector
Reference date: 2025-11-13
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-11-07:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9528 |
3480 |
257 |
457 |
90 |
5 |
0 |
0 |
| OW |
10 |
234 |
89 |
314 |
316 |
54 |
0 |
0 |
| VODI |
1 |
250 |
93 |
225 |
274 |
63 |
2 |
0 |
| ODI |
0 |
91 |
105 |
379 |
540 |
187 |
22 |
0 |
| CDI |
0 |
1 |
2 |
91 |
469 |
562 |
143 |
0 |
| VCDI |
0 |
0 |
0 |
10 |
306 |
1509 |
10573 |
15115 |
|
|
Date: 2025-11-09:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9360 |
3187 |
187 |
406 |
97 |
4 |
0 |
0 |
| OW |
33 |
225 |
60 |
343 |
291 |
41 |
0 |
0 |
| VODI |
12 |
230 |
67 |
290 |
365 |
123 |
2 |
0 |
| ODI |
2 |
221 |
86 |
342 |
484 |
293 |
42 |
0 |
| CDI |
0 |
6 |
3 |
61 |
439 |
825 |
230 |
0 |
| VCDI |
0 |
0 |
0 |
5 |
44 |
1260 |
10873 |
15308 |
|
|
Date: 2025-11-11:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9104 |
3001 |
171 |
331 |
174 |
1 |
0 |
0 |
| OW |
14 |
229 |
49 |
165 |
351 |
37 |
0 |
0 |
| VODI |
4 |
384 |
79 |
208 |
348 |
172 |
1 |
0 |
| ODI |
0 |
79 |
78 |
257 |
664 |
317 |
11 |
0 |
| CDI |
0 |
0 |
1 |
35 |
343 |
1013 |
244 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
32 |
825 |
7191 |
19932 |
|
|
Date: 2025-11-13:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9048 |
2826 |
160 |
236 |
80 |
1 |
0 |
0 |
| OW |
10 |
238 |
38 |
149 |
161 |
11 |
0 |
0 |
| VODI |
11 |
487 |
110 |
274 |
319 |
54 |
1 |
0 |
| ODI |
0 |
111 |
68 |
242 |
596 |
181 |
13 |
0 |
| CDI |
0 |
6 |
3 |
59 |
314 |
999 |
169 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
42 |
1322 |
10153 |
17355 |
|
|
Date: 2025-11-15:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9054 |
2713 |
238 |
251 |
43 |
0 |
0 |
0 |
| OW |
17 |
213 |
81 |
156 |
112 |
14 |
0 |
0 |
| VODI |
10 |
217 |
95 |
266 |
178 |
72 |
1 |
0 |
| ODI |
0 |
40 |
27 |
256 |
309 |
182 |
20 |
0 |
| CDI |
0 |
7 |
5 |
70 |
258 |
751 |
153 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
74 |
1828 |
13603 |
14530 |
|
|
Date: 2025-11-17:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8607 |
2752 |
192 |
319 |
96 |
2 |
0 |
0 |
| OW |
0 |
186 |
47 |
138 |
207 |
44 |
0 |
0 |
| VODI |
0 |
185 |
71 |
233 |
230 |
85 |
1 |
0 |
| ODI |
0 |
26 |
20 |
96 |
624 |
169 |
3 |
0 |
| CDI |
0 |
6 |
2 |
30 |
399 |
935 |
120 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
38 |
1803 |
11874 |
16307 |
|
|
Date: 2025-11-19:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8543 |
2212 |
147 |
240 |
209 |
4 |
0 |
0 |
| OW |
0 |
207 |
43 |
117 |
185 |
35 |
0 |
0 |
| VODI |
0 |
302 |
77 |
201 |
281 |
90 |
2 |
0 |
| ODI |
0 |
88 |
23 |
121 |
369 |
405 |
9 |
0 |
| CDI |
0 |
16 |
17 |
66 |
259 |
1195 |
136 |
12 |
| VCDI |
0 |
0 |
0 |
8 |
85 |
2344 |
12940 |
14859 |
|
|
Date: 2025-11-21:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8476 |
2140 |
164 |
234 |
31 |
0 |
0 |
0 |
| OW |
0 |
211 |
47 |
187 |
182 |
31 |
0 |
0 |
| VODI |
0 |
276 |
67 |
137 |
182 |
60 |
4 |
0 |
| ODI |
0 |
75 |
60 |
257 |
349 |
112 |
8 |
0 |
| CDI |
0 |
4 |
6 |
85 |
784 |
841 |
58 |
3 |
| VCDI |
0 |
0 |
0 |
11 |
195 |
2557 |
13084 |
14929 |
|
|
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