Validation of sea ice concentration - American sector
Reference date: 2025-11-27
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
8474 |
2141 |
164 |
242 |
36 |
0 |
0 |
0 |
| OW |
0 |
212 |
47 |
180 |
175 |
31 |
0 |
0 |
| VODI |
0 |
274 |
67 |
138 |
182 |
60 |
4 |
0 |
| ODI |
0 |
76 |
60 |
255 |
352 |
113 |
8 |
0 |
| CDI |
0 |
4 |
6 |
84 |
784 |
839 |
58 |
3 |
| VCDI |
0 |
0 |
0 |
12 |
194 |
2558 |
13084 |
14929 |
|
|
Date: 2025-11-23:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8461 |
1655 |
147 |
253 |
196 |
6 |
0 |
0 |
| OW |
0 |
156 |
31 |
80 |
169 |
100 |
0 |
0 |
| VODI |
0 |
199 |
65 |
205 |
178 |
213 |
7 |
0 |
| ODI |
0 |
25 |
21 |
166 |
451 |
277 |
36 |
0 |
| CDI |
0 |
0 |
5 |
32 |
422 |
1528 |
323 |
5 |
| VCDI |
0 |
0 |
0 |
0 |
55 |
1872 |
12043 |
16464 |
|
|
Date: 2025-11-25:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8433 |
1625 |
133 |
180 |
106 |
1 |
0 |
0 |
| OW |
0 |
155 |
62 |
161 |
128 |
33 |
0 |
0 |
| VODI |
0 |
178 |
66 |
193 |
146 |
160 |
64 |
0 |
| ODI |
0 |
35 |
49 |
173 |
350 |
274 |
76 |
0 |
| CDI |
0 |
0 |
1 |
68 |
343 |
1112 |
545 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
278 |
1146 |
10598 |
18974 |
|
|
Date: 2025-11-27:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8408 |
1338 |
106 |
108 |
65 |
1 |
0 |
0 |
| OW |
15 |
164 |
59 |
113 |
126 |
12 |
0 |
0 |
| VODI |
5 |
173 |
44 |
102 |
137 |
77 |
17 |
0 |
| ODI |
0 |
139 |
69 |
208 |
271 |
162 |
76 |
0 |
| CDI |
0 |
16 |
21 |
165 |
438 |
658 |
311 |
1 |
| VCDI |
0 |
0 |
0 |
2 |
240 |
2044 |
14145 |
15810 |
|
|
Date: 2025-11-29:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6025 |
2992 |
151 |
126 |
29 |
0 |
0 |
0 |
| OW |
15 |
204 |
52 |
135 |
199 |
35 |
0 |
0 |
| VODI |
0 |
202 |
45 |
107 |
117 |
94 |
9 |
0 |
| ODI |
0 |
180 |
62 |
190 |
271 |
179 |
48 |
0 |
| CDI |
0 |
96 |
30 |
98 |
473 |
896 |
195 |
0 |
| VCDI |
0 |
0 |
0 |
6 |
144 |
2531 |
14959 |
14951 |
|
|
Date: 2025-12-01:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3866 |
4103 |
158 |
200 |
105 |
3 |
0 |
0 |
| OW |
16 |
138 |
47 |
117 |
278 |
33 |
0 |
0 |
| VODI |
3 |
182 |
38 |
119 |
189 |
113 |
2 |
0 |
| ODI |
0 |
223 |
47 |
152 |
217 |
150 |
29 |
0 |
| CDI |
0 |
164 |
36 |
120 |
467 |
988 |
260 |
2 |
| VCDI |
0 |
0 |
1 |
16 |
76 |
2695 |
15104 |
15389 |
|
|
Date: 2025-12-03:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3267 |
4108 |
91 |
154 |
99 |
3 |
0 |
0 |
| OW |
23 |
123 |
38 |
57 |
235 |
68 |
0 |
0 |
| VODI |
20 |
151 |
65 |
90 |
236 |
177 |
0 |
0 |
| ODI |
0 |
397 |
71 |
225 |
375 |
201 |
10 |
0 |
| CDI |
0 |
57 |
8 |
155 |
463 |
650 |
173 |
2 |
| VCDI |
0 |
0 |
0 |
26 |
86 |
1917 |
15217 |
16808 |
|
|
Date: 2025-12-05:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2919 |
4056 |
98 |
130 |
25 |
3 |
0 |
0 |
| OW |
65 |
96 |
26 |
80 |
57 |
21 |
0 |
0 |
| VODI |
33 |
127 |
42 |
105 |
252 |
247 |
2 |
0 |
| ODI |
11 |
349 |
46 |
192 |
479 |
217 |
17 |
0 |
| CDI |
0 |
133 |
5 |
64 |
615 |
715 |
188 |
0 |
| VCDI |
0 |
0 |
0 |
28 |
184 |
1484 |
11616 |
21119 |
|
|
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