Validation of sea ice concentration - American sector
Reference date: 2025-10-30
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-10-24:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11927 |
4493 |
224 |
300 |
74 |
0 |
0 |
0 |
| OW |
2 |
110 |
65 |
269 |
184 |
6 |
0 |
0 |
| VODI |
0 |
29 |
44 |
147 |
264 |
150 |
20 |
0 |
| ODI |
0 |
3 |
14 |
96 |
241 |
292 |
49 |
0 |
| CDI |
0 |
0 |
0 |
17 |
310 |
995 |
219 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
31 |
2974 |
11334 |
10956 |
|
|
Date: 2025-10-26:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11587 |
4027 |
241 |
366 |
159 |
7 |
0 |
0 |
| OW |
1 |
109 |
61 |
178 |
240 |
41 |
0 |
0 |
| VODI |
0 |
39 |
45 |
158 |
204 |
176 |
12 |
0 |
| ODI |
0 |
4 |
4 |
92 |
248 |
384 |
54 |
0 |
| CDI |
0 |
1 |
4 |
22 |
280 |
1716 |
454 |
0 |
| VCDI |
0 |
0 |
1 |
6 |
23 |
1998 |
16117 |
6781 |
|
|
Date: 2025-10-28:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11741 |
3463 |
218 |
461 |
87 |
0 |
0 |
0 |
| OW |
1 |
163 |
54 |
198 |
207 |
33 |
0 |
0 |
| VODI |
0 |
87 |
34 |
140 |
199 |
143 |
7 |
0 |
| ODI |
0 |
21 |
15 |
100 |
212 |
194 |
50 |
0 |
| CDI |
0 |
1 |
8 |
39 |
272 |
1017 |
193 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
53 |
2255 |
17842 |
6331 |
|
|
Date: 2025-10-30:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10761 |
4035 |
233 |
423 |
128 |
21 |
0 |
0 |
| OW |
1 |
147 |
84 |
232 |
170 |
41 |
0 |
0 |
| VODI |
0 |
48 |
56 |
204 |
172 |
110 |
0 |
0 |
| ODI |
0 |
6 |
26 |
181 |
282 |
222 |
35 |
0 |
| CDI |
0 |
0 |
0 |
22 |
243 |
1054 |
184 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
22 |
1899 |
12265 |
12533 |
|
|
Date: 2025-11-01:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10679 |
4101 |
191 |
246 |
17 |
1 |
0 |
0 |
| OW |
4 |
415 |
118 |
278 |
88 |
2 |
0 |
0 |
| VODI |
1 |
208 |
84 |
182 |
110 |
30 |
0 |
0 |
| ODI |
0 |
51 |
72 |
264 |
341 |
89 |
33 |
0 |
| CDI |
0 |
1 |
6 |
106 |
544 |
913 |
145 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
44 |
1122 |
8925 |
16429 |
|
|
Date: 2025-11-03:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10267 |
4120 |
218 |
398 |
117 |
0 |
0 |
0 |
| OW |
12 |
320 |
65 |
183 |
161 |
4 |
0 |
0 |
| VODI |
4 |
268 |
80 |
257 |
213 |
31 |
0 |
0 |
| ODI |
0 |
192 |
76 |
257 |
353 |
84 |
6 |
0 |
| CDI |
0 |
4 |
14 |
94 |
450 |
599 |
159 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
91 |
1382 |
11209 |
14151 |
|
|
Date: 2025-11-05:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9831 |
3726 |
259 |
560 |
308 |
3 |
0 |
0 |
| OW |
13 |
292 |
65 |
118 |
178 |
20 |
0 |
0 |
| VODI |
0 |
344 |
95 |
232 |
224 |
33 |
1 |
0 |
| ODI |
0 |
69 |
116 |
423 |
529 |
86 |
16 |
0 |
| CDI |
0 |
2 |
9 |
83 |
386 |
714 |
146 |
0 |
| VCDI |
0 |
0 |
0 |
13 |
118 |
1695 |
9779 |
15354 |
|
|
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 |
3481 |
254 |
452 |
73 |
5 |
0 |
0 |
| OW |
8 |
235 |
92 |
315 |
328 |
50 |
0 |
0 |
| VODI |
1 |
248 |
93 |
230 |
279 |
67 |
2 |
0 |
| ODI |
0 |
88 |
105 |
377 |
541 |
181 |
22 |
0 |
| CDI |
0 |
1 |
2 |
92 |
471 |
565 |
144 |
0 |
| VCDI |
0 |
0 |
0 |
8 |
303 |
1512 |
10572 |
15115 |
|
|
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