Validation of sea ice concentration - American sector
Bulletin date: 2025-01-30
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-24:
| 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 |
8005 |
2137 |
39 |
55 |
6 |
0 |
0 |
0 |
| OW |
3 |
152 |
64 |
138 |
25 |
0 |
0 |
0 |
| VODI |
1 |
9 |
23 |
114 |
151 |
23 |
0 |
0 |
| ODI |
0 |
0 |
0 |
33 |
180 |
177 |
4 |
0 |
| CDI |
0 |
0 |
0 |
0 |
132 |
750 |
197 |
45 |
| VCDI |
0 |
0 |
0 |
0 |
268 |
3381 |
14199 |
30920 |
|
...date precedes bulletin
|
Date: 2025-01-26:
| 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 |
7292 |
2559 |
46 |
68 |
10 |
0 |
0 |
0 |
| OW |
0 |
175 |
64 |
180 |
46 |
1 |
0 |
0 |
| VODI |
0 |
9 |
5 |
105 |
175 |
39 |
1 |
0 |
| ODI |
0 |
0 |
0 |
3 |
143 |
223 |
8 |
0 |
| CDI |
0 |
0 |
0 |
10 |
79 |
594 |
309 |
18 |
| VCDI |
0 |
0 |
0 |
33 |
123 |
2876 |
15189 |
30848 |
|
...date precedes bulletin
|
Date: 2025-01-28:
| 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 |
6527 |
2793 |
55 |
66 |
14 |
0 |
0 |
0 |
| OW |
0 |
112 |
83 |
143 |
48 |
6 |
0 |
0 |
| VODI |
0 |
12 |
5 |
191 |
143 |
20 |
0 |
0 |
| ODI |
0 |
0 |
2 |
20 |
191 |
119 |
1 |
0 |
| CDI |
0 |
0 |
0 |
1 |
34 |
564 |
174 |
41 |
| VCDI |
0 |
0 |
0 |
0 |
58 |
3577 |
15115 |
31116 |
|
...date precedes bulletin
|
Date: 2025-01-30:
| 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 |
6494 |
2745 |
41 |
63 |
3 |
0 |
0 |
0 |
| OW |
0 |
217 |
46 |
88 |
34 |
0 |
0 |
0 |
| VODI |
0 |
47 |
44 |
218 |
95 |
1 |
0 |
0 |
| ODI |
0 |
4 |
1 |
56 |
250 |
25 |
2 |
0 |
| CDI |
0 |
0 |
0 |
12 |
249 |
347 |
50 |
3 |
| VCDI |
0 |
0 |
0 |
3 |
135 |
3256 |
12152 |
34550 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6494 |
2776 |
46 |
66 |
2 |
0 |
0 |
0 |
| OW |
0 |
204 |
45 |
108 |
43 |
0 |
0 |
0 |
| VODI |
0 |
30 |
40 |
197 |
101 |
1 |
0 |
0 |
| ODI |
0 |
3 |
0 |
55 |
207 |
37 |
1 |
0 |
| CDI |
0 |
0 |
1 |
11 |
281 |
294 |
44 |
3 |
| VCDI |
0 |
0 |
0 |
3 |
132 |
3297 |
12159 |
34550 |
|
Date: 2025-02-01:
| 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 |
7174 |
2278 |
24 |
59 |
0 |
0 |
0 |
0 |
| OW |
0 |
316 |
11 |
58 |
41 |
0 |
0 |
0 |
| VODI |
0 |
213 |
50 |
34 |
71 |
10 |
0 |
0 |
| ODI |
0 |
36 |
33 |
118 |
85 |
48 |
0 |
0 |
| CDI |
0 |
3 |
5 |
62 |
223 |
324 |
17 |
3 |
| VCDI |
0 |
0 |
0 |
20 |
382 |
3480 |
12846 |
33207 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7174 |
2352 |
28 |
73 |
4 |
0 |
0 |
0 |
| OW |
0 |
282 |
12 |
49 |
54 |
0 |
0 |
0 |
| VODI |
0 |
176 |
42 |
36 |
74 |
13 |
0 |
0 |
| ODI |
0 |
34 |
35 |
100 |
73 |
61 |
0 |
0 |
| CDI |
0 |
2 |
6 |
70 |
176 |
284 |
26 |
3 |
| VCDI |
0 |
0 |
0 |
23 |
421 |
3504 |
12837 |
33207 |
|
Date: 2025-02-03:
| 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 |
7841 |
2110 |
31 |
35 |
2 |
0 |
0 |
0 |
| OW |
0 |
594 |
63 |
39 |
9 |
0 |
0 |
0 |
| VODI |
0 |
34 |
40 |
225 |
77 |
13 |
0 |
0 |
| ODI |
0 |
2 |
3 |
25 |
234 |
71 |
0 |
1 |
| CDI |
0 |
2 |
1 |
8 |
190 |
576 |
10 |
9 |
| VCDI |
0 |
0 |
0 |
6 |
150 |
3432 |
9441 |
35957 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7841 |
2059 |
43 |
42 |
5 |
0 |
0 |
0 |
| OW |
0 |
293 |
13 |
32 |
15 |
0 |
0 |
0 |
| VODI |
0 |
261 |
7 |
46 |
37 |
6 |
0 |
0 |
| ODI |
0 |
115 |
50 |
75 |
65 |
56 |
0 |
1 |
| CDI |
0 |
11 |
23 |
110 |
151 |
251 |
1 |
7 |
| VCDI |
0 |
3 |
2 |
33 |
389 |
3779 |
9450 |
35959 |
|
Date: 2025-02-05:
| 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 |
8017 |
2108 |
39 |
58 |
1 |
0 |
0 |
0 |
| OW |
0 |
408 |
50 |
140 |
25 |
0 |
0 |
0 |
| VODI |
0 |
47 |
30 |
141 |
126 |
6 |
0 |
0 |
| ODI |
0 |
10 |
0 |
50 |
158 |
76 |
6 |
0 |
| CDI |
0 |
4 |
2 |
3 |
228 |
543 |
37 |
12 |
| VCDI |
0 |
4 |
0 |
1 |
250 |
3402 |
12321 |
32928 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8017 |
1957 |
39 |
70 |
8 |
0 |
0 |
0 |
| OW |
0 |
222 |
16 |
60 |
24 |
0 |
0 |
0 |
| VODI |
0 |
270 |
11 |
51 |
73 |
1 |
1 |
0 |
| ODI |
0 |
105 |
46 |
95 |
87 |
44 |
7 |
0 |
| CDI |
0 |
19 |
7 |
86 |
181 |
286 |
25 |
30 |
| VCDI |
0 |
8 |
2 |
31 |
415 |
3696 |
12331 |
32910 |
|
Date: 2025-02-07:
| 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 |
7502 |
2560 |
40 |
62 |
0 |
0 |
0 |
0 |
| OW |
0 |
263 |
47 |
170 |
61 |
0 |
0 |
0 |
| VODI |
0 |
37 |
22 |
95 |
168 |
8 |
0 |
0 |
| ODI |
0 |
9 |
2 |
5 |
187 |
46 |
0 |
0 |
| CDI |
0 |
2 |
1 |
4 |
133 |
291 |
5 |
6 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
3810 |
10062 |
35631 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7502 |
2439 |
49 |
127 |
73 |
0 |
0 |
0 |
| OW |
0 |
148 |
17 |
46 |
58 |
7 |
0 |
0 |
| VODI |
0 |
230 |
17 |
44 |
64 |
38 |
0 |
0 |
| ODI |
0 |
41 |
25 |
100 |
124 |
66 |
0 |
0 |
| CDI |
0 |
13 |
3 |
15 |
150 |
256 |
22 |
7 |
| VCDI |
0 |
0 |
1 |
4 |
82 |
3788 |
10045 |
35630 |
|
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