Validation of sea ice concentration - American sector
Bulletin date: 2025-01-16
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-10:
| 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 |
7337 |
3464 |
86 |
116 |
47 |
12 |
0 |
0 |
| OW |
5 |
466 |
128 |
318 |
139 |
115 |
1 |
0 |
| VODI |
3 |
47 |
26 |
420 |
577 |
334 |
124 |
0 |
| ODI |
0 |
1 |
1 |
75 |
518 |
434 |
183 |
1 |
| CDI |
0 |
0 |
0 |
46 |
271 |
711 |
435 |
37 |
| VCDI |
0 |
0 |
0 |
2 |
60 |
1764 |
9649 |
33278 |
|
...date precedes bulletin
|
Date: 2025-01-12:
| 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 |
7499 |
3115 |
69 |
87 |
4 |
0 |
0 |
0 |
| OW |
1 |
387 |
112 |
277 |
131 |
42 |
0 |
0 |
| VODI |
0 |
75 |
37 |
353 |
513 |
257 |
60 |
0 |
| ODI |
0 |
8 |
3 |
71 |
555 |
466 |
302 |
0 |
| CDI |
0 |
0 |
0 |
33 |
443 |
691 |
477 |
79 |
| VCDI |
0 |
0 |
0 |
0 |
127 |
1822 |
10016 |
33119 |
|
...date precedes bulletin
|
Date: 2025-01-14:
| 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 |
7226 |
3037 |
139 |
81 |
0 |
0 |
0 |
0 |
| OW |
0 |
321 |
140 |
365 |
13 |
1 |
0 |
0 |
| VODI |
0 |
22 |
32 |
457 |
338 |
29 |
0 |
0 |
| ODI |
0 |
0 |
0 |
45 |
436 |
419 |
5 |
0 |
| CDI |
0 |
0 |
0 |
0 |
361 |
1537 |
352 |
34 |
| VCDI |
0 |
0 |
0 |
34 |
155 |
2575 |
11439 |
31638 |
|
...date precedes bulletin
|
Date: 2025-01-16:
| 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 |
7186 |
2968 |
70 |
76 |
0 |
0 |
0 |
0 |
| OW |
0 |
309 |
120 |
324 |
38 |
0 |
0 |
0 |
| VODI |
0 |
18 |
39 |
408 |
312 |
80 |
0 |
0 |
| ODI |
0 |
0 |
0 |
52 |
326 |
307 |
53 |
0 |
| CDI |
0 |
0 |
0 |
1 |
252 |
840 |
687 |
11 |
| VCDI |
0 |
0 |
0 |
0 |
173 |
1906 |
12053 |
32622 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7186 |
3069 |
124 |
162 |
1 |
0 |
0 |
0 |
| OW |
0 |
219 |
88 |
393 |
149 |
2 |
0 |
0 |
| VODI |
0 |
7 |
17 |
267 |
283 |
159 |
9 |
0 |
| ODI |
0 |
0 |
0 |
38 |
307 |
338 |
149 |
0 |
| CDI |
0 |
0 |
0 |
1 |
236 |
923 |
787 |
26 |
| VCDI |
0 |
0 |
0 |
0 |
125 |
1711 |
11848 |
32607 |
|
Date: 2025-01-18:
| 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 |
7551 |
2536 |
73 |
56 |
0 |
0 |
0 |
0 |
| OW |
0 |
217 |
81 |
350 |
30 |
0 |
0 |
0 |
| VODI |
0 |
50 |
28 |
356 |
402 |
42 |
0 |
0 |
| ODI |
0 |
10 |
9 |
86 |
430 |
268 |
6 |
0 |
| CDI |
0 |
0 |
0 |
22 |
338 |
765 |
326 |
3 |
| VCDI |
0 |
0 |
0 |
7 |
325 |
3086 |
12140 |
31638 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7550 |
2668 |
115 |
155 |
0 |
0 |
0 |
0 |
| OW |
1 |
111 |
55 |
395 |
148 |
6 |
0 |
0 |
| VODI |
0 |
31 |
18 |
242 |
391 |
130 |
4 |
0 |
| ODI |
0 |
3 |
3 |
66 |
381 |
337 |
44 |
0 |
| CDI |
0 |
0 |
0 |
18 |
300 |
815 |
445 |
4 |
| VCDI |
0 |
0 |
0 |
1 |
305 |
2873 |
11979 |
31637 |
|
Date: 2025-01-20:
| 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 |
7871 |
2178 |
37 |
77 |
0 |
0 |
0 |
0 |
| OW |
3 |
127 |
94 |
187 |
18 |
0 |
0 |
0 |
| VODI |
3 |
36 |
25 |
462 |
272 |
2 |
0 |
0 |
| ODI |
0 |
7 |
1 |
85 |
582 |
143 |
6 |
0 |
| CDI |
0 |
3 |
0 |
4 |
298 |
1237 |
192 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
302 |
3536 |
14371 |
29069 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7871 |
2229 |
111 |
267 |
17 |
0 |
0 |
0 |
| OW |
4 |
60 |
20 |
219 |
201 |
26 |
0 |
0 |
| VODI |
2 |
55 |
24 |
180 |
297 |
225 |
9 |
0 |
| ODI |
0 |
5 |
2 |
101 |
329 |
322 |
146 |
0 |
| CDI |
0 |
2 |
0 |
44 |
278 |
754 |
613 |
6 |
| VCDI |
0 |
0 |
0 |
4 |
350 |
3591 |
13801 |
29066 |
|
Date: 2025-01-22:
| 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 |
7729 |
2253 |
34 |
41 |
0 |
0 |
0 |
0 |
| OW |
3 |
156 |
31 |
161 |
29 |
0 |
0 |
0 |
| VODI |
3 |
19 |
10 |
101 |
184 |
39 |
0 |
0 |
| ODI |
0 |
2 |
0 |
13 |
301 |
177 |
5 |
1 |
| CDI |
0 |
0 |
0 |
4 |
347 |
725 |
295 |
28 |
| VCDI |
0 |
0 |
0 |
0 |
333 |
3456 |
15148 |
29603 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7723 |
2271 |
64 |
157 |
47 |
3 |
0 |
0 |
| OW |
12 |
81 |
9 |
124 |
143 |
69 |
2 |
0 |
| VODI |
0 |
73 |
2 |
22 |
130 |
190 |
55 |
0 |
| ODI |
0 |
5 |
0 |
15 |
110 |
219 |
175 |
3 |
| CDI |
0 |
0 |
0 |
2 |
352 |
421 |
427 |
74 |
| VCDI |
0 |
0 |
0 |
0 |
412 |
3495 |
14789 |
29555 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7991 |
2107 |
103 |
209 |
87 |
7 |
0 |
0 |
| OW |
18 |
100 |
14 |
67 |
88 |
26 |
1 |
0 |
| VODI |
0 |
80 |
4 |
43 |
91 |
104 |
39 |
0 |
| ODI |
0 |
11 |
5 |
18 |
70 |
134 |
96 |
0 |
| CDI |
0 |
0 |
0 |
3 |
96 |
384 |
283 |
15 |
| VCDI |
0 |
0 |
0 |
0 |
330 |
3676 |
13981 |
30950 |
|
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