Validation of sea ice concentration - American sector
Bulletin date: 2024-12-19
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-12-13:
| 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 |
14357 |
3530 |
93 |
72 |
0 |
0 |
0 |
0 |
| OW |
226 |
937 |
99 |
204 |
53 |
0 |
0 |
0 |
| VODI |
19 |
374 |
119 |
398 |
190 |
80 |
0 |
0 |
| ODI |
2 |
33 |
29 |
253 |
306 |
111 |
0 |
0 |
| CDI |
1 |
8 |
0 |
71 |
622 |
511 |
18 |
1 |
| VCDI |
0 |
10 |
0 |
9 |
407 |
3779 |
10120 |
24189 |
|
...date precedes bulletin
|
Date: 2024-12-15:
| 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 |
13910 |
3368 |
43 |
45 |
28 |
0 |
0 |
0 |
| OW |
281 |
793 |
109 |
208 |
59 |
0 |
0 |
0 |
| VODI |
36 |
316 |
94 |
686 |
131 |
9 |
0 |
0 |
| ODI |
23 |
52 |
56 |
292 |
351 |
64 |
4 |
0 |
| CDI |
11 |
3 |
0 |
47 |
504 |
905 |
95 |
0 |
| VCDI |
11 |
0 |
0 |
0 |
391 |
3737 |
12533 |
22036 |
|
...date precedes bulletin
|
Date: 2024-12-17:
| 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 |
12231 |
4886 |
94 |
50 |
6 |
25 |
0 |
0 |
| OW |
65 |
758 |
115 |
255 |
72 |
14 |
0 |
0 |
| VODI |
16 |
113 |
71 |
410 |
315 |
28 |
0 |
0 |
| ODI |
1 |
6 |
7 |
120 |
473 |
191 |
0 |
0 |
| CDI |
0 |
0 |
0 |
35 |
513 |
1031 |
129 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
357 |
3339 |
11227 |
24274 |
|
...date precedes bulletin
|
Date: 2024-12-19:
| 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 |
11415 |
4439 |
123 |
154 |
3 |
6 |
0 |
0 |
| OW |
122 |
586 |
185 |
434 |
114 |
32 |
0 |
0 |
| VODI |
0 |
115 |
59 |
371 |
523 |
144 |
0 |
0 |
| ODI |
0 |
9 |
2 |
172 |
297 |
235 |
0 |
0 |
| CDI |
0 |
0 |
0 |
46 |
316 |
1116 |
354 |
0 |
| VCDI |
0 |
0 |
0 |
12 |
408 |
3398 |
9524 |
26517 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11431 |
4480 |
194 |
318 |
17 |
5 |
0 |
0 |
| OW |
101 |
563 |
147 |
372 |
240 |
33 |
0 |
0 |
| VODI |
5 |
102 |
27 |
320 |
456 |
218 |
0 |
0 |
| ODI |
0 |
4 |
1 |
134 |
269 |
354 |
4 |
0 |
| CDI |
0 |
0 |
0 |
36 |
275 |
995 |
474 |
0 |
| VCDI |
0 |
0 |
0 |
9 |
404 |
3326 |
9400 |
26517 |
|
Date: 2024-12-21:
| 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 |
9886 |
4430 |
210 |
215 |
9 |
0 |
0 |
0 |
| OW |
47 |
565 |
133 |
499 |
178 |
18 |
0 |
0 |
| VODI |
57 |
207 |
50 |
383 |
567 |
212 |
0 |
0 |
| ODI |
0 |
16 |
7 |
173 |
345 |
504 |
0 |
0 |
| CDI |
0 |
0 |
0 |
37 |
269 |
946 |
522 |
11 |
| VCDI |
0 |
0 |
0 |
2 |
204 |
3064 |
7531 |
29934 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9889 |
4596 |
264 |
389 |
36 |
0 |
0 |
0 |
| OW |
41 |
423 |
75 |
407 |
238 |
27 |
0 |
0 |
| VODI |
60 |
189 |
61 |
358 |
579 |
374 |
0 |
0 |
| ODI |
0 |
10 |
0 |
135 |
258 |
567 |
23 |
0 |
| CDI |
0 |
0 |
0 |
20 |
252 |
969 |
684 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
209 |
2807 |
7346 |
29942 |
|
Date: 2024-12-23:
| 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 |
8919 |
4373 |
145 |
115 |
11 |
1 |
0 |
0 |
| OW |
0 |
894 |
203 |
410 |
28 |
0 |
0 |
0 |
| VODI |
0 |
93 |
34 |
715 |
492 |
10 |
0 |
0 |
| ODI |
0 |
0 |
0 |
63 |
1341 |
252 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
496 |
1051 |
105 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
218 |
2055 |
7650 |
31553 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8919 |
4290 |
190 |
358 |
24 |
0 |
0 |
0 |
| OW |
0 |
772 |
121 |
477 |
236 |
7 |
0 |
0 |
| VODI |
0 |
259 |
61 |
354 |
670 |
177 |
4 |
0 |
| ODI |
0 |
39 |
10 |
100 |
642 |
525 |
51 |
0 |
| CDI |
0 |
0 |
0 |
17 |
383 |
647 |
862 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
631 |
2013 |
6838 |
31554 |
|
Date: 2024-12-25:
| 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 |
8625 |
3903 |
86 |
79 |
0 |
0 |
0 |
0 |
| OW |
22 |
1018 |
152 |
428 |
46 |
0 |
0 |
0 |
| VODI |
71 |
358 |
67 |
463 |
555 |
52 |
0 |
0 |
| ODI |
0 |
23 |
6 |
231 |
696 |
654 |
4 |
0 |
| CDI |
0 |
0 |
0 |
52 |
349 |
1338 |
158 |
38 |
| VCDI |
0 |
0 |
0 |
0 |
281 |
2903 |
6024 |
32549 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8625 |
3840 |
131 |
220 |
12 |
0 |
0 |
0 |
| OW |
8 |
1016 |
131 |
442 |
210 |
1 |
0 |
0 |
| VODI |
43 |
380 |
44 |
382 |
679 |
151 |
1 |
0 |
| ODI |
42 |
66 |
5 |
168 |
427 |
770 |
38 |
0 |
| CDI |
0 |
0 |
0 |
39 |
210 |
902 |
713 |
15 |
| VCDI |
0 |
0 |
0 |
2 |
389 |
3123 |
5434 |
32572 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8199 |
4059 |
126 |
186 |
3 |
0 |
0 |
0 |
| OW |
46 |
989 |
125 |
459 |
152 |
2 |
0 |
0 |
| VODI |
62 |
452 |
68 |
620 |
603 |
59 |
0 |
0 |
| ODI |
21 |
72 |
17 |
147 |
695 |
293 |
6 |
2 |
| CDI |
0 |
0 |
0 |
66 |
431 |
741 |
783 |
52 |
| VCDI |
0 |
0 |
0 |
11 |
265 |
3154 |
7360 |
30905 |
|
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