Validation of sea ice concentration - Asian 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 |
7713 |
7074 |
268 |
332 |
60 |
0 |
0 |
0 |
| OW |
1 |
321 |
69 |
327 |
380 |
39 |
1 |
0 |
| VODI |
0 |
293 |
128 |
335 |
224 |
74 |
5 |
0 |
| ODI |
0 |
44 |
19 |
127 |
552 |
232 |
9 |
0 |
| CDI |
0 |
0 |
1 |
7 |
303 |
2453 |
476 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
3659 |
6313 |
240 |
|
|
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 |
7540 |
6365 |
334 |
388 |
23 |
0 |
0 |
0 |
| OW |
11 |
436 |
110 |
366 |
426 |
164 |
0 |
0 |
| VODI |
7 |
344 |
141 |
436 |
195 |
269 |
28 |
0 |
| ODI |
0 |
41 |
14 |
190 |
433 |
290 |
71 |
0 |
| CDI |
0 |
0 |
0 |
3 |
142 |
2705 |
593 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
2753 |
6350 |
912 |
|
|
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 |
7434 |
4634 |
328 |
571 |
341 |
18 |
0 |
0 |
| OW |
6 |
331 |
110 |
326 |
474 |
319 |
10 |
0 |
| VODI |
6 |
277 |
129 |
879 |
212 |
371 |
138 |
0 |
| ODI |
0 |
31 |
22 |
207 |
555 |
343 |
134 |
0 |
| CDI |
0 |
0 |
0 |
1 |
121 |
2742 |
600 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
2042 |
6907 |
1462 |
|
|
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 |
7130 |
3051 |
313 |
576 |
138 |
1 |
0 |
0 |
| OW |
5 |
198 |
44 |
158 |
486 |
262 |
1 |
0 |
| VODI |
9 |
276 |
171 |
574 |
304 |
647 |
27 |
0 |
| ODI |
0 |
84 |
105 |
760 |
872 |
487 |
109 |
0 |
| CDI |
0 |
2 |
4 |
51 |
590 |
1041 |
369 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
22 |
3980 |
6424 |
2810 |
|
|
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 |
6938 |
2514 |
254 |
474 |
97 |
3 |
0 |
0 |
| OW |
8 |
189 |
40 |
253 |
317 |
35 |
0 |
0 |
| VODI |
1 |
206 |
131 |
210 |
321 |
289 |
3 |
0 |
| ODI |
0 |
37 |
43 |
605 |
955 |
406 |
78 |
0 |
| CDI |
0 |
0 |
2 |
31 |
1018 |
1257 |
216 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
156 |
4349 |
8391 |
2254 |
|
|
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 |
6253 |
2723 |
243 |
422 |
32 |
0 |
0 |
0 |
| OW |
8 |
124 |
45 |
350 |
291 |
0 |
0 |
0 |
| VODI |
0 |
98 |
77 |
199 |
285 |
92 |
0 |
0 |
| ODI |
0 |
55 |
41 |
372 |
598 |
219 |
3 |
0 |
| CDI |
0 |
0 |
0 |
91 |
1029 |
970 |
144 |
0 |
| VCDI |
0 |
0 |
0 |
11 |
338 |
5361 |
8981 |
2626 |
|
|
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 |
5822 |
2479 |
84 |
208 |
114 |
5 |
0 |
0 |
| OW |
0 |
98 |
21 |
125 |
541 |
157 |
0 |
0 |
| VODI |
0 |
71 |
41 |
73 |
316 |
277 |
1 |
0 |
| ODI |
0 |
57 |
21 |
125 |
256 |
374 |
14 |
0 |
| CDI |
0 |
0 |
2 |
32 |
444 |
1084 |
363 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
53 |
4359 |
11386 |
3078 |
|
|
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 |
4187 |
3452 |
155 |
230 |
8 |
0 |
0 |
0 |
| OW |
0 |
43 |
22 |
99 |
111 |
51 |
0 |
0 |
| VODI |
0 |
52 |
19 |
93 |
69 |
560 |
131 |
0 |
| ODI |
0 |
29 |
19 |
86 |
84 |
442 |
273 |
0 |
| CDI |
0 |
0 |
0 |
10 |
196 |
447 |
361 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
75 |
3740 |
12090 |
4947 |
|
|
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