Validation of sea ice concentration - American sector
Bulletin date: 2025-07-22
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-07-22:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10036 |
3002 |
11 |
47 |
16 |
2 |
0 |
0 |
| OW |
166 |
483 |
10 |
61 |
38 |
11 |
0 |
0 |
| VODI |
80 |
575 |
8 |
193 |
236 |
179 |
12 |
0 |
| ODI |
1 |
487 |
37 |
558 |
1249 |
666 |
74 |
0 |
| CDI |
0 |
271 |
27 |
699 |
3138 |
3565 |
200 |
0 |
| VCDI |
0 |
90 |
14 |
615 |
4722 |
12860 |
1118 |
0 |
|
Date: 2025-07-24:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10330 |
4135 |
29 |
253 |
135 |
13 |
0 |
0 |
| OW |
0 |
103 |
11 |
97 |
59 |
46 |
0 |
0 |
| VODI |
0 |
194 |
22 |
211 |
203 |
250 |
3 |
0 |
| ODI |
0 |
336 |
40 |
518 |
949 |
880 |
21 |
0 |
| CDI |
0 |
207 |
25 |
719 |
2599 |
3532 |
218 |
0 |
| VCDI |
0 |
129 |
14 |
812 |
4640 |
12810 |
1014 |
0 |
|
Date: 2025-07-26:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10395 |
4402 |
64 |
418 |
193 |
27 |
0 |
0 |
| OW |
0 |
126 |
3 |
56 |
85 |
41 |
0 |
0 |
| VODI |
0 |
214 |
15 |
146 |
301 |
176 |
0 |
0 |
| ODI |
0 |
290 |
24 |
384 |
1115 |
556 |
14 |
0 |
| CDI |
0 |
227 |
28 |
759 |
3344 |
2474 |
238 |
0 |
| VCDI |
0 |
197 |
26 |
866 |
5621 |
11346 |
1386 |
0 |
|
Date: 2025-07-28:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10611 |
4684 |
75 |
469 |
191 |
72 |
4 |
0 |
| OW |
0 |
87 |
7 |
54 |
42 |
66 |
8 |
0 |
| VODI |
0 |
217 |
11 |
118 |
224 |
203 |
16 |
0 |
| ODI |
0 |
283 |
23 |
319 |
932 |
599 |
50 |
0 |
| CDI |
0 |
323 |
29 |
701 |
2772 |
2461 |
307 |
0 |
| VCDI |
0 |
294 |
39 |
1102 |
5710 |
10448 |
2006 |
0 |
|
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