Validation of sea ice concentration - American sector
Bulletin date: 2025-10-23
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-10-17:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
27869 |
4180 |
174 |
249 |
15 |
0 |
0 |
0 |
| OW |
9 |
400 |
150 |
501 |
160 |
3 |
0 |
0 |
| VODI |
1 |
17 |
36 |
392 |
421 |
47 |
0 |
0 |
| ODI |
0 |
0 |
0 |
141 |
418 |
200 |
4 |
0 |
| CDI |
0 |
0 |
0 |
22 |
300 |
706 |
294 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
40 |
2050 |
11960 |
10472 |
|
...date precedes bulletin
|
Date: 2025-10-19:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
27694 |
4268 |
169 |
312 |
30 |
0 |
0 |
0 |
| OW |
27 |
418 |
152 |
379 |
195 |
13 |
0 |
0 |
| VODI |
1 |
27 |
49 |
379 |
390 |
83 |
0 |
0 |
| ODI |
0 |
4 |
0 |
122 |
448 |
142 |
5 |
0 |
| CDI |
0 |
2 |
1 |
21 |
298 |
571 |
97 |
0 |
| VCDI |
0 |
0 |
1 |
4 |
60 |
2673 |
10853 |
11343 |
|
...date precedes bulletin
|
Date: 2025-10-21:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
27470 |
4175 |
326 |
338 |
36 |
0 |
0 |
0 |
| OW |
2 |
204 |
165 |
420 |
87 |
7 |
0 |
0 |
| VODI |
1 |
2 |
9 |
371 |
254 |
53 |
0 |
0 |
| ODI |
0 |
0 |
0 |
137 |
354 |
146 |
0 |
0 |
| CDI |
0 |
0 |
0 |
12 |
555 |
783 |
291 |
15 |
| VCDI |
0 |
0 |
0 |
0 |
56 |
2805 |
9256 |
12901 |
|
...date precedes bulletin
|
Date: 2025-10-23:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
27179 |
3846 |
267 |
469 |
23 |
0 |
0 |
0 |
| OW |
1 |
209 |
70 |
426 |
153 |
11 |
0 |
0 |
| VODI |
2 |
53 |
55 |
290 |
262 |
86 |
0 |
0 |
| ODI |
0 |
0 |
4 |
133 |
265 |
201 |
12 |
0 |
| CDI |
0 |
0 |
0 |
84 |
340 |
748 |
266 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
127 |
2484 |
10149 |
13014 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
27179 |
3831 |
270 |
477 |
36 |
3 |
0 |
0 |
| OW |
1 |
218 |
70 |
396 |
156 |
17 |
0 |
0 |
| VODI |
2 |
58 |
48 |
306 |
248 |
110 |
2 |
0 |
| ODI |
0 |
1 |
8 |
115 |
266 |
230 |
15 |
0 |
| CDI |
0 |
0 |
0 |
103 |
296 |
772 |
333 |
0 |
| VCDI |
0 |
0 |
0 |
7 |
168 |
2398 |
10077 |
13014 |
|
Date: 2025-10-25:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
26392 |
4045 |
245 |
468 |
55 |
1 |
0 |
0 |
| OW |
0 |
117 |
107 |
391 |
147 |
18 |
0 |
0 |
| VODI |
3 |
30 |
39 |
341 |
432 |
50 |
5 |
0 |
| ODI |
0 |
1 |
0 |
156 |
275 |
181 |
3 |
0 |
| CDI |
0 |
0 |
0 |
38 |
468 |
780 |
158 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
259 |
4440 |
12650 |
8936 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
26392 |
4024 |
236 |
482 |
74 |
12 |
0 |
0 |
| OW |
0 |
138 |
117 |
367 |
138 |
24 |
3 |
0 |
| VODI |
3 |
30 |
38 |
343 |
363 |
53 |
3 |
0 |
| ODI |
0 |
1 |
0 |
147 |
334 |
202 |
5 |
0 |
| CDI |
0 |
0 |
0 |
55 |
468 |
816 |
188 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
259 |
4363 |
12617 |
8936 |
|
Date: 2025-10-27:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
26749 |
3141 |
273 |
560 |
28 |
0 |
0 |
0 |
| OW |
9 |
109 |
76 |
528 |
124 |
0 |
0 |
0 |
| VODI |
3 |
5 |
6 |
287 |
548 |
44 |
2 |
0 |
| ODI |
0 |
1 |
1 |
15 |
489 |
866 |
90 |
0 |
| CDI |
0 |
0 |
0 |
4 |
106 |
838 |
141 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
38 |
2393 |
13480 |
10277 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
26732 |
3044 |
240 |
619 |
106 |
14 |
0 |
0 |
| OW |
26 |
153 |
79 |
318 |
172 |
26 |
2 |
0 |
| VODI |
3 |
48 |
30 |
308 |
358 |
72 |
19 |
0 |
| ODI |
0 |
9 |
4 |
110 |
317 |
248 |
5 |
0 |
| CDI |
0 |
2 |
3 |
36 |
233 |
772 |
74 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
147 |
3009 |
13613 |
10277 |
|
Date: 2025-10-29:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
26141 |
3303 |
216 |
631 |
117 |
0 |
0 |
0 |
| OW |
0 |
91 |
68 |
492 |
209 |
3 |
0 |
0 |
| VODI |
3 |
8 |
7 |
332 |
492 |
55 |
5 |
0 |
| ODI |
0 |
1 |
1 |
37 |
470 |
262 |
37 |
0 |
| CDI |
0 |
0 |
0 |
12 |
239 |
981 |
334 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
32 |
1715 |
11218 |
13719 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
26118 |
3152 |
194 |
643 |
201 |
7 |
0 |
0 |
| OW |
23 |
218 |
53 |
329 |
237 |
42 |
2 |
0 |
| VODI |
3 |
28 |
41 |
312 |
348 |
111 |
42 |
0 |
| ODI |
0 |
4 |
3 |
176 |
355 |
185 |
30 |
0 |
| CDI |
0 |
1 |
1 |
40 |
322 |
741 |
145 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
96 |
1930 |
11375 |
13719 |
|
Date: 2025-10-31:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
25527 |
3709 |
284 |
424 |
79 |
0 |
0 |
0 |
| OW |
0 |
155 |
137 |
626 |
117 |
0 |
0 |
0 |
| VODI |
3 |
5 |
19 |
420 |
342 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
137 |
529 |
97 |
1 |
0 |
| CDI |
0 |
0 |
0 |
18 |
512 |
629 |
72 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
67 |
1383 |
8245 |
17693 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
25526 |
3549 |
241 |
490 |
54 |
0 |
0 |
0 |
| OW |
1 |
270 |
138 |
453 |
212 |
0 |
0 |
0 |
| VODI |
3 |
50 |
55 |
434 |
384 |
72 |
6 |
0 |
| ODI |
0 |
0 |
6 |
144 |
387 |
159 |
25 |
0 |
| CDI |
0 |
0 |
0 |
92 |
405 |
518 |
117 |
11 |
| VCDI |
0 |
0 |
0 |
12 |
204 |
1361 |
8170 |
17682 |
|
Generated by /metno/routine/sms/V3/SIconcentrationValidation5/SICmultiWebPage5sector.sh Fri Nov 7 02:30:50 UTC 2025 on arcval2