Validation of sea ice concentration - Full domain
Bulletin date: 2025-09-25
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-19:
| 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 |
134204 |
14512 |
219 |
121 |
0 |
0 |
0 |
0 |
| OW |
37 |
2573 |
765 |
1423 |
128 |
0 |
0 |
0 |
| VODI |
0 |
173 |
189 |
2260 |
1807 |
67 |
0 |
0 |
| ODI |
0 |
16 |
14 |
304 |
2084 |
1921 |
11 |
0 |
| CDI |
0 |
2 |
3 |
112 |
1415 |
10911 |
728 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
119 |
11671 |
6777 |
177 |
|
...date precedes bulletin
|
Date: 2025-09-21:
| 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 |
135650 |
12734 |
138 |
85 |
0 |
0 |
0 |
0 |
| OW |
178 |
2772 |
640 |
1190 |
131 |
0 |
0 |
0 |
| VODI |
0 |
265 |
206 |
1842 |
1948 |
97 |
0 |
0 |
| ODI |
0 |
30 |
17 |
449 |
1864 |
1935 |
5 |
0 |
| CDI |
0 |
6 |
5 |
155 |
1356 |
7203 |
724 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
61 |
11622 |
11271 |
163 |
|
...date precedes bulletin
|
Date: 2025-09-23:
| 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 |
135368 |
13579 |
261 |
141 |
0 |
0 |
0 |
0 |
| OW |
291 |
1545 |
494 |
1408 |
156 |
0 |
0 |
0 |
| VODI |
52 |
234 |
95 |
1419 |
1583 |
112 |
0 |
0 |
| ODI |
0 |
30 |
20 |
305 |
1654 |
1583 |
18 |
0 |
| CDI |
0 |
8 |
4 |
119 |
1391 |
4999 |
972 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
81 |
7521 |
17050 |
2246 |
|
...date precedes bulletin
|
Date: 2025-09-25:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-09-27:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-09-29:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-10-01:
| 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 |
130881 |
14761 |
733 |
412 |
1 |
0 |
0 |
0 |
| OW |
282 |
1319 |
437 |
1234 |
94 |
0 |
0 |
0 |
| VODI |
2 |
128 |
112 |
1456 |
776 |
3 |
0 |
0 |
| ODI |
0 |
24 |
9 |
398 |
1423 |
128 |
0 |
0 |
| CDI |
0 |
13 |
1 |
31 |
1506 |
2174 |
15 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
348 |
9663 |
20063 |
6316 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
130696 |
13598 |
612 |
394 |
42 |
1 |
0 |
0 |
| OW |
469 |
1913 |
379 |
1199 |
529 |
49 |
0 |
0 |
| VODI |
0 |
681 |
246 |
1213 |
1263 |
471 |
12 |
0 |
| ODI |
0 |
52 |
45 |
480 |
915 |
1098 |
137 |
0 |
| CDI |
0 |
1 |
10 |
227 |
985 |
2338 |
1104 |
0 |
| VCDI |
0 |
0 |
0 |
18 |
414 |
8011 |
18825 |
6316 |
|
Date: 2025-10-03:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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