Validation of sea ice concentration - American sector
Bulletin date: 2025-01-02
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-12-27:
| 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 |
8194 |
4034 |
66 |
47 |
0 |
0 |
0 |
0 |
| OW |
28 |
1027 |
159 |
363 |
48 |
0 |
0 |
0 |
| VODI |
80 |
420 |
84 |
591 |
467 |
55 |
0 |
0 |
| ODI |
26 |
79 |
20 |
370 |
755 |
275 |
0 |
0 |
| CDI |
0 |
12 |
7 |
116 |
564 |
1168 |
394 |
17 |
| VCDI |
0 |
0 |
0 |
2 |
315 |
2751 |
7755 |
30942 |
|
...date precedes bulletin
|
Date: 2024-12-29:
| 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 |
8040 |
4103 |
84 |
125 |
0 |
0 |
0 |
0 |
| OW |
22 |
1032 |
168 |
305 |
59 |
3 |
0 |
0 |
| VODI |
45 |
547 |
147 |
636 |
422 |
53 |
0 |
0 |
| ODI |
26 |
133 |
42 |
220 |
700 |
146 |
0 |
0 |
| CDI |
0 |
31 |
10 |
88 |
601 |
1244 |
107 |
12 |
| VCDI |
0 |
6 |
8 |
55 |
178 |
3057 |
5626 |
33150 |
|
...date precedes bulletin
|
Date: 2024-12-31:
| 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 |
9041 |
4100 |
49 |
38 |
0 |
0 |
0 |
0 |
| OW |
10 |
910 |
257 |
609 |
12 |
0 |
0 |
0 |
| VODI |
0 |
95 |
37 |
685 |
668 |
4 |
0 |
0 |
| ODI |
0 |
6 |
1 |
150 |
960 |
185 |
0 |
0 |
| CDI |
0 |
0 |
0 |
65 |
468 |
889 |
52 |
17 |
| VCDI |
0 |
0 |
0 |
14 |
253 |
2789 |
7249 |
31618 |
|
...date precedes bulletin
|
Date: 2025-01-02:
| 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 |
8746 |
4198 |
127 |
186 |
11 |
0 |
0 |
0 |
| OW |
3 |
705 |
163 |
632 |
341 |
26 |
0 |
0 |
| VODI |
0 |
99 |
32 |
403 |
385 |
284 |
31 |
0 |
| ODI |
0 |
24 |
2 |
192 |
169 |
278 |
238 |
0 |
| CDI |
0 |
11 |
1 |
110 |
135 |
482 |
424 |
1 |
| VCDI |
0 |
0 |
0 |
37 |
164 |
3315 |
10034 |
29242 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8749 |
4555 |
254 |
403 |
45 |
0 |
0 |
0 |
| OW |
0 |
395 |
53 |
563 |
445 |
50 |
0 |
0 |
| VODI |
0 |
65 |
15 |
319 |
365 |
333 |
40 |
0 |
| ODI |
0 |
20 |
2 |
158 |
132 |
308 |
190 |
0 |
| CDI |
0 |
2 |
1 |
106 |
86 |
581 |
555 |
1 |
| VCDI |
0 |
0 |
0 |
11 |
132 |
3113 |
9942 |
29242 |
|
Date: 2025-01-04:
| 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 |
8150 |
4505 |
205 |
271 |
70 |
0 |
0 |
0 |
| OW |
107 |
389 |
163 |
608 |
337 |
19 |
0 |
0 |
| VODI |
7 |
154 |
61 |
352 |
430 |
152 |
0 |
0 |
| ODI |
0 |
24 |
3 |
220 |
233 |
235 |
0 |
0 |
| CDI |
0 |
32 |
5 |
94 |
189 |
416 |
12 |
5 |
| VCDI |
0 |
19 |
7 |
40 |
253 |
3910 |
7396 |
32158 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8244 |
4732 |
331 |
578 |
175 |
3 |
0 |
0 |
| OW |
19 |
200 |
53 |
446 |
411 |
48 |
0 |
0 |
| VODI |
1 |
129 |
46 |
276 |
375 |
191 |
0 |
0 |
| ODI |
0 |
38 |
8 |
194 |
196 |
259 |
2 |
0 |
| CDI |
0 |
24 |
3 |
64 |
170 |
410 |
32 |
3 |
| VCDI |
0 |
0 |
3 |
27 |
185 |
3821 |
7374 |
32160 |
|
Date: 2025-01-06:
| 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 |
7533 |
4421 |
242 |
229 |
106 |
8 |
0 |
0 |
| OW |
17 |
238 |
211 |
537 |
133 |
20 |
0 |
0 |
| VODI |
7 |
55 |
10 |
1041 |
483 |
75 |
0 |
0 |
| ODI |
0 |
4 |
0 |
92 |
519 |
220 |
0 |
0 |
| CDI |
0 |
0 |
0 |
21 |
175 |
714 |
72 |
19 |
| VCDI |
0 |
0 |
0 |
15 |
187 |
2862 |
8475 |
32490 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7533 |
4513 |
419 |
787 |
333 |
90 |
0 |
0 |
| OW |
23 |
123 |
24 |
543 |
249 |
143 |
2 |
0 |
| VODI |
1 |
56 |
18 |
383 |
411 |
168 |
52 |
0 |
| ODI |
0 |
23 |
2 |
136 |
199 |
243 |
78 |
0 |
| CDI |
0 |
3 |
0 |
75 |
162 |
362 |
109 |
9 |
| VCDI |
0 |
0 |
0 |
11 |
249 |
2893 |
8306 |
32500 |
|
Date: 2025-01-08:
| 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 |
7319 |
3810 |
153 |
215 |
103 |
38 |
0 |
0 |
| OW |
6 |
418 |
123 |
357 |
309 |
28 |
0 |
0 |
| VODI |
3 |
24 |
23 |
580 |
826 |
172 |
3 |
0 |
| ODI |
0 |
0 |
0 |
120 |
507 |
444 |
27 |
2 |
| CDI |
0 |
0 |
0 |
19 |
161 |
673 |
139 |
53 |
| VCDI |
0 |
0 |
0 |
1 |
120 |
3533 |
9488 |
31434 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7319 |
4159 |
231 |
471 |
554 |
148 |
9 |
0 |
| OW |
7 |
80 |
66 |
484 |
276 |
232 |
44 |
0 |
| VODI |
2 |
12 |
2 |
253 |
537 |
298 |
85 |
0 |
| ODI |
0 |
1 |
0 |
67 |
275 |
327 |
97 |
0 |
| CDI |
0 |
0 |
0 |
16 |
192 |
351 |
191 |
50 |
| VCDI |
0 |
0 |
0 |
1 |
192 |
3532 |
9231 |
31439 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7340 |
3731 |
154 |
324 |
326 |
489 |
128 |
0 |
| OW |
2 |
234 |
72 |
268 |
123 |
117 |
207 |
0 |
| VODI |
3 |
13 |
15 |
283 |
446 |
240 |
245 |
0 |
| ODI |
0 |
0 |
0 |
69 |
355 |
248 |
201 |
1 |
| CDI |
0 |
0 |
0 |
24 |
256 |
322 |
284 |
48 |
| VCDI |
0 |
0 |
0 |
9 |
106 |
1954 |
9327 |
33267 |
|
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