Validation of sea ice concentration - American sector
Bulletin date: 2025-03-06
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-02-28:
| 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 |
6416 |
2738 |
48 |
51 |
9 |
0 |
0 |
0 |
| OW |
0 |
116 |
94 |
246 |
26 |
0 |
0 |
0 |
| VODI |
0 |
4 |
6 |
158 |
261 |
3 |
0 |
0 |
| ODI |
0 |
0 |
0 |
6 |
150 |
201 |
0 |
0 |
| CDI |
0 |
0 |
0 |
6 |
81 |
465 |
97 |
27 |
| VCDI |
0 |
0 |
0 |
17 |
164 |
2730 |
9149 |
37962 |
|
...date precedes bulletin
|
Date: 2025-03-02:
| 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 |
6324 |
2740 |
34 |
58 |
7 |
0 |
0 |
0 |
| OW |
0 |
156 |
89 |
206 |
34 |
0 |
0 |
0 |
| VODI |
0 |
15 |
12 |
155 |
258 |
6 |
0 |
0 |
| ODI |
0 |
0 |
1 |
10 |
121 |
164 |
11 |
0 |
| CDI |
0 |
0 |
0 |
0 |
37 |
390 |
261 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
91 |
2729 |
9792 |
37526 |
|
...date precedes bulletin
|
Date: 2025-03-04:
| 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 |
6179 |
2732 |
42 |
68 |
9 |
0 |
0 |
0 |
| OW |
0 |
181 |
80 |
121 |
46 |
0 |
0 |
0 |
| VODI |
0 |
2 |
9 |
201 |
135 |
7 |
0 |
0 |
| ODI |
0 |
0 |
0 |
23 |
230 |
34 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
123 |
421 |
20 |
4 |
| VCDI |
0 |
0 |
0 |
2 |
85 |
3367 |
8538 |
38571 |
|
...date precedes bulletin
|
Date: 2025-03-06:
| 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 |
6000 |
2608 |
26 |
57 |
4 |
0 |
0 |
0 |
| OW |
0 |
260 |
112 |
220 |
27 |
0 |
0 |
0 |
| VODI |
0 |
1 |
11 |
212 |
170 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
46 |
226 |
56 |
1 |
0 |
| CDI |
0 |
0 |
0 |
0 |
221 |
424 |
65 |
57 |
| VCDI |
0 |
0 |
0 |
0 |
164 |
3885 |
11287 |
35091 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6000 |
2627 |
40 |
67 |
7 |
0 |
0 |
0 |
| OW |
0 |
238 |
93 |
215 |
32 |
0 |
0 |
0 |
| VODI |
0 |
4 |
16 |
194 |
152 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
58 |
198 |
62 |
2 |
0 |
| CDI |
0 |
0 |
0 |
1 |
256 |
431 |
73 |
40 |
| VCDI |
0 |
0 |
0 |
0 |
167 |
3872 |
11278 |
35108 |
|
Date: 2025-03-08:
| 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 |
6003 |
2426 |
26 |
51 |
2 |
0 |
0 |
0 |
| OW |
0 |
428 |
86 |
184 |
32 |
0 |
0 |
0 |
| VODI |
0 |
4 |
15 |
249 |
183 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
49 |
221 |
65 |
1 |
0 |
| CDI |
0 |
0 |
0 |
3 |
170 |
387 |
77 |
42 |
| VCDI |
0 |
0 |
0 |
10 |
200 |
3491 |
12275 |
34547 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6003 |
2473 |
40 |
73 |
5 |
0 |
0 |
0 |
| OW |
0 |
371 |
60 |
186 |
51 |
0 |
0 |
0 |
| VODI |
0 |
14 |
27 |
200 |
150 |
10 |
0 |
0 |
| ODI |
0 |
0 |
0 |
73 |
197 |
61 |
14 |
0 |
| CDI |
0 |
0 |
0 |
4 |
203 |
340 |
81 |
43 |
| VCDI |
0 |
0 |
0 |
10 |
202 |
3536 |
12258 |
34546 |
|
Date: 2025-03-10:
| 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 |
6464 |
2381 |
45 |
87 |
3 |
0 |
0 |
0 |
| OW |
0 |
277 |
151 |
160 |
42 |
0 |
0 |
0 |
| VODI |
0 |
1 |
6 |
276 |
157 |
8 |
0 |
0 |
| ODI |
0 |
0 |
0 |
16 |
277 |
67 |
6 |
0 |
| CDI |
0 |
0 |
0 |
12 |
290 |
530 |
82 |
23 |
| VCDI |
0 |
0 |
0 |
24 |
430 |
2726 |
9591 |
37099 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6464 |
2192 |
46 |
66 |
10 |
0 |
0 |
0 |
| OW |
0 |
347 |
81 |
184 |
68 |
0 |
0 |
0 |
| VODI |
0 |
87 |
39 |
113 |
112 |
12 |
0 |
0 |
| ODI |
0 |
31 |
26 |
75 |
144 |
58 |
11 |
0 |
| CDI |
0 |
2 |
10 |
79 |
260 |
241 |
73 |
34 |
| VCDI |
0 |
0 |
0 |
58 |
605 |
3020 |
9595 |
37088 |
|
Date: 2025-03-12:
| 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 |
6352 |
2456 |
46 |
72 |
6 |
0 |
0 |
0 |
| OW |
0 |
315 |
122 |
202 |
62 |
0 |
0 |
0 |
| VODI |
0 |
2 |
9 |
165 |
200 |
25 |
0 |
0 |
| ODI |
0 |
0 |
0 |
19 |
145 |
160 |
2 |
0 |
| CDI |
0 |
0 |
0 |
15 |
90 |
593 |
67 |
14 |
| VCDI |
0 |
0 |
0 |
25 |
184 |
2173 |
8649 |
39061 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6352 |
2323 |
33 |
63 |
10 |
0 |
0 |
0 |
| OW |
0 |
343 |
63 |
145 |
99 |
0 |
0 |
0 |
| VODI |
0 |
89 |
59 |
94 |
111 |
31 |
0 |
0 |
| ODI |
0 |
18 |
20 |
88 |
94 |
111 |
2 |
0 |
| CDI |
0 |
0 |
2 |
65 |
99 |
470 |
45 |
17 |
| VCDI |
0 |
0 |
0 |
43 |
274 |
2339 |
8671 |
39058 |
|
Date: 2025-03-14:
| 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 |
5949 |
2702 |
81 |
99 |
10 |
0 |
0 |
0 |
| OW |
0 |
166 |
82 |
335 |
100 |
2 |
0 |
0 |
| VODI |
0 |
0 |
0 |
67 |
257 |
56 |
0 |
0 |
| ODI |
0 |
0 |
0 |
7 |
101 |
164 |
1 |
0 |
| CDI |
0 |
0 |
0 |
12 |
65 |
537 |
111 |
21 |
| VCDI |
0 |
0 |
0 |
61 |
144 |
3232 |
11372 |
35497 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
5949 |
2530 |
19 |
44 |
16 |
0 |
0 |
0 |
| OW |
0 |
296 |
103 |
166 |
71 |
0 |
0 |
0 |
| VODI |
0 |
42 |
34 |
166 |
128 |
39 |
0 |
0 |
| ODI |
0 |
0 |
7 |
106 |
115 |
126 |
10 |
0 |
| CDI |
0 |
0 |
0 |
21 |
156 |
355 |
80 |
11 |
| VCDI |
0 |
0 |
0 |
78 |
191 |
3471 |
11394 |
35507 |
|
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