Validation of sea ice concentration - American sector
Bulletin date: 2025-01-09
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-03:
| 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 |
8567 |
4194 |
163 |
278 |
21 |
0 |
0 |
0 |
| OW |
83 |
536 |
128 |
594 |
382 |
51 |
0 |
0 |
| VODI |
8 |
116 |
51 |
383 |
372 |
201 |
54 |
0 |
| ODI |
0 |
26 |
4 |
210 |
194 |
216 |
128 |
0 |
| CDI |
0 |
18 |
2 |
121 |
127 |
338 |
312 |
1 |
| VCDI |
0 |
0 |
0 |
58 |
174 |
3637 |
10751 |
28732 |
|
...date precedes bulletin
|
Date: 2025-01-05:
| 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 |
7832 |
4571 |
261 |
329 |
125 |
2 |
0 |
0 |
| OW |
98 |
268 |
159 |
652 |
248 |
58 |
0 |
0 |
| VODI |
7 |
172 |
51 |
438 |
347 |
162 |
0 |
0 |
| ODI |
0 |
37 |
8 |
218 |
225 |
218 |
15 |
0 |
| CDI |
0 |
23 |
9 |
104 |
194 |
382 |
46 |
0 |
| VCDI |
0 |
12 |
3 |
60 |
203 |
3448 |
7758 |
32488 |
|
...date precedes bulletin
|
Date: 2025-01-07:
| 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 |
7374 |
4021 |
182 |
348 |
69 |
44 |
0 |
0 |
| OW |
13 |
344 |
140 |
438 |
259 |
37 |
0 |
0 |
| VODI |
6 |
39 |
18 |
736 |
839 |
114 |
0 |
0 |
| ODI |
0 |
0 |
1 |
124 |
452 |
336 |
12 |
0 |
| CDI |
0 |
0 |
0 |
6 |
140 |
704 |
123 |
36 |
| VCDI |
0 |
0 |
0 |
1 |
214 |
2817 |
8823 |
32421 |
|
...date precedes bulletin
|
Date: 2025-01-09:
| 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 |
7346 |
3621 |
62 |
143 |
40 |
37 |
3 |
0 |
| OW |
4 |
489 |
156 |
340 |
295 |
39 |
9 |
0 |
| VODI |
2 |
35 |
39 |
449 |
675 |
307 |
6 |
0 |
| ODI |
0 |
1 |
0 |
83 |
560 |
498 |
21 |
0 |
| CDI |
0 |
0 |
0 |
16 |
229 |
849 |
163 |
25 |
| VCDI |
0 |
0 |
0 |
1 |
91 |
2771 |
9669 |
32157 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7347 |
3940 |
135 |
278 |
57 |
63 |
5 |
0 |
| OW |
4 |
184 |
117 |
452 |
361 |
42 |
8 |
0 |
| VODI |
1 |
21 |
5 |
249 |
746 |
416 |
4 |
0 |
| ODI |
0 |
1 |
0 |
38 |
450 |
572 |
56 |
2 |
| CDI |
0 |
0 |
0 |
13 |
183 |
718 |
191 |
117 |
| VCDI |
0 |
0 |
0 |
2 |
93 |
2690 |
9607 |
32063 |
|
Date: 2025-01-11:
| 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 |
7503 |
3227 |
82 |
86 |
12 |
6 |
0 |
0 |
| OW |
0 |
458 |
121 |
243 |
141 |
84 |
1 |
0 |
| VODI |
0 |
74 |
37 |
354 |
486 |
292 |
167 |
0 |
| ODI |
0 |
6 |
5 |
94 |
574 |
393 |
255 |
5 |
| CDI |
0 |
0 |
0 |
47 |
366 |
606 |
517 |
94 |
| VCDI |
0 |
0 |
0 |
0 |
112 |
2017 |
7904 |
34862 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7503 |
3553 |
126 |
157 |
51 |
9 |
0 |
0 |
| OW |
0 |
185 |
103 |
364 |
206 |
130 |
7 |
0 |
| VODI |
0 |
26 |
15 |
185 |
547 |
320 |
251 |
0 |
| ODI |
0 |
1 |
1 |
81 |
463 |
480 |
313 |
11 |
| CDI |
0 |
0 |
0 |
37 |
304 |
534 |
523 |
49 |
| VCDI |
0 |
0 |
0 |
0 |
120 |
1925 |
7750 |
34901 |
|
Date: 2025-01-13:
| 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 |
7329 |
3161 |
93 |
33 |
0 |
0 |
0 |
0 |
| OW |
0 |
392 |
130 |
238 |
9 |
1 |
0 |
0 |
| VODI |
0 |
34 |
15 |
504 |
352 |
20 |
0 |
0 |
| ODI |
0 |
0 |
0 |
26 |
900 |
324 |
2 |
0 |
| CDI |
0 |
0 |
0 |
7 |
341 |
1648 |
113 |
12 |
| VCDI |
0 |
0 |
0 |
25 |
159 |
2040 |
9592 |
33731 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7329 |
3321 |
125 |
164 |
14 |
0 |
0 |
0 |
| OW |
0 |
214 |
86 |
363 |
152 |
22 |
0 |
0 |
| VODI |
0 |
51 |
27 |
206 |
518 |
305 |
17 |
0 |
| ODI |
0 |
1 |
0 |
56 |
388 |
630 |
347 |
0 |
| CDI |
0 |
0 |
0 |
13 |
445 |
881 |
458 |
74 |
| VCDI |
0 |
0 |
0 |
31 |
244 |
2195 |
8885 |
33669 |
|
Date: 2025-01-15:
| 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 |
7164 |
3053 |
73 |
97 |
0 |
0 |
0 |
0 |
| OW |
0 |
316 |
143 |
361 |
21 |
0 |
0 |
0 |
| VODI |
0 |
29 |
19 |
368 |
373 |
42 |
0 |
0 |
| ODI |
0 |
3 |
2 |
33 |
286 |
384 |
40 |
0 |
| CDI |
0 |
0 |
0 |
1 |
254 |
1161 |
571 |
55 |
| VCDI |
0 |
0 |
0 |
0 |
189 |
2508 |
13363 |
30322 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7164 |
3175 |
137 |
231 |
5 |
0 |
0 |
0 |
| OW |
0 |
195 |
85 |
331 |
141 |
7 |
0 |
0 |
| VODI |
0 |
24 |
11 |
251 |
385 |
336 |
62 |
0 |
| ODI |
0 |
6 |
2 |
39 |
176 |
530 |
340 |
2 |
| CDI |
0 |
1 |
2 |
8 |
182 |
766 |
830 |
62 |
| VCDI |
0 |
0 |
0 |
0 |
234 |
2456 |
12742 |
30313 |
|
Date: 2025-01-17:
| 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 |
7239 |
2876 |
71 |
39 |
0 |
0 |
0 |
0 |
| OW |
0 |
290 |
80 |
369 |
39 |
0 |
0 |
0 |
| VODI |
0 |
49 |
33 |
390 |
315 |
71 |
0 |
0 |
| ODI |
0 |
1 |
2 |
82 |
327 |
314 |
21 |
0 |
| CDI |
0 |
0 |
0 |
33 |
244 |
809 |
501 |
37 |
| VCDI |
0 |
0 |
0 |
0 |
190 |
2039 |
11821 |
32949 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7239 |
2946 |
82 |
198 |
34 |
0 |
0 |
0 |
| OW |
0 |
191 |
45 |
211 |
143 |
14 |
0 |
0 |
| VODI |
0 |
79 |
56 |
341 |
284 |
166 |
7 |
0 |
| ODI |
0 |
0 |
3 |
121 |
278 |
498 |
169 |
0 |
| CDI |
0 |
0 |
0 |
34 |
158 |
612 |
1038 |
111 |
| VCDI |
0 |
0 |
0 |
8 |
218 |
1943 |
11129 |
32875 |
|
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