Validation of sea ice concentration - American sector
Reference date: 2025-10-23
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-10-17:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12872 |
4991 |
263 |
322 |
47 |
0 |
0 |
0 |
| OW |
6 |
87 |
68 |
257 |
229 |
25 |
0 |
0 |
| VODI |
1 |
27 |
39 |
213 |
282 |
147 |
0 |
0 |
| ODI |
0 |
0 |
9 |
96 |
296 |
317 |
42 |
0 |
| CDI |
0 |
0 |
0 |
17 |
127 |
711 |
325 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
1751 |
15093 |
7181 |
|
|
Date: 2025-10-19:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12669 |
5079 |
205 |
257 |
21 |
0 |
0 |
0 |
| OW |
14 |
104 |
52 |
290 |
284 |
17 |
0 |
0 |
| VODI |
2 |
53 |
38 |
182 |
322 |
117 |
0 |
0 |
| ODI |
0 |
2 |
18 |
98 |
240 |
257 |
14 |
0 |
| CDI |
0 |
0 |
0 |
14 |
246 |
671 |
215 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
20 |
2127 |
13291 |
8924 |
|
|
Date: 2025-10-21:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12300 |
4738 |
354 |
468 |
75 |
4 |
0 |
0 |
| OW |
19 |
114 |
57 |
172 |
232 |
40 |
3 |
0 |
| VODI |
2 |
58 |
42 |
128 |
287 |
160 |
40 |
0 |
| ODI |
0 |
1 |
7 |
96 |
261 |
274 |
33 |
0 |
| CDI |
0 |
0 |
0 |
10 |
291 |
700 |
211 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
36 |
2280 |
12207 |
10143 |
|
|
Date: 2025-10-23:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12204 |
4478 |
230 |
344 |
41 |
0 |
0 |
0 |
| OW |
0 |
143 |
65 |
233 |
196 |
19 |
0 |
0 |
| VODI |
0 |
43 |
38 |
183 |
188 |
185 |
12 |
0 |
| ODI |
0 |
3 |
16 |
87 |
222 |
303 |
48 |
0 |
| CDI |
0 |
0 |
2 |
16 |
240 |
830 |
233 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
36 |
1686 |
15446 |
8072 |
|
|
Date: 2025-10-25:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11587 |
4407 |
271 |
345 |
93 |
4 |
0 |
0 |
| OW |
1 |
98 |
64 |
232 |
208 |
16 |
0 |
0 |
| VODI |
0 |
31 |
39 |
166 |
272 |
135 |
19 |
0 |
| ODI |
0 |
2 |
9 |
113 |
298 |
306 |
57 |
0 |
| CDI |
0 |
0 |
2 |
37 |
375 |
1656 |
301 |
1 |
| VCDI |
0 |
0 |
0 |
3 |
29 |
3483 |
14585 |
6598 |
|
|
Date: 2025-10-27:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11802 |
3605 |
253 |
385 |
90 |
10 |
0 |
0 |
| OW |
0 |
146 |
53 |
189 |
224 |
35 |
0 |
0 |
| VODI |
0 |
79 |
42 |
161 |
190 |
146 |
9 |
0 |
| ODI |
0 |
5 |
9 |
105 |
231 |
270 |
46 |
0 |
| CDI |
0 |
0 |
0 |
12 |
203 |
1105 |
226 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
10 |
2569 |
17661 |
5972 |
|
|
Date: 2025-10-29:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11117 |
3860 |
218 |
418 |
159 |
7 |
0 |
0 |
| OW |
0 |
148 |
61 |
192 |
229 |
44 |
0 |
0 |
| VODI |
0 |
69 |
44 |
191 |
177 |
152 |
2 |
0 |
| ODI |
0 |
2 |
18 |
117 |
241 |
223 |
38 |
0 |
| CDI |
0 |
0 |
1 |
13 |
202 |
962 |
200 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
44 |
1999 |
16099 |
8596 |
|
|
Date: 2025-10-31:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10601 |
4215 |
248 |
297 |
50 |
3 |
0 |
0 |
| OW |
0 |
233 |
107 |
282 |
124 |
15 |
0 |
0 |
| VODI |
1 |
81 |
84 |
213 |
138 |
42 |
0 |
0 |
| ODI |
0 |
9 |
32 |
252 |
275 |
169 |
23 |
0 |
| CDI |
0 |
0 |
1 |
65 |
450 |
1053 |
202 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
30 |
1192 |
11827 |
13529 |
|
|
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