Validation of sea ice concentration - American sector
Bulletin date: 2023-12-28
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-12-22:
| 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 |
7174 |
4026 |
119 |
266 |
178 |
20 |
0 |
0 |
| OW |
22 |
515 |
149 |
538 |
265 |
54 |
0 |
0 |
| VODI |
3 |
295 |
49 |
495 |
520 |
128 |
15 |
0 |
| ODI |
0 |
15 |
8 |
160 |
871 |
238 |
33 |
0 |
| CDI |
0 |
0 |
0 |
32 |
786 |
608 |
219 |
22 |
| VCDI |
0 |
0 |
0 |
0 |
262 |
3251 |
7551 |
32344 |
|
...date precedes bulletin
|
Date: 2023-12-24:
| 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 |
6665 |
3787 |
85 |
173 |
115 |
15 |
0 |
0 |
| OW |
26 |
489 |
180 |
526 |
256 |
47 |
0 |
0 |
| VODI |
0 |
332 |
103 |
640 |
642 |
179 |
0 |
0 |
| ODI |
0 |
81 |
5 |
199 |
829 |
259 |
1 |
0 |
| CDI |
0 |
0 |
0 |
48 |
829 |
679 |
63 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
232 |
3496 |
10763 |
29484 |
|
...date precedes bulletin
|
Date: 2023-12-26:
| 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 |
6433 |
3457 |
56 |
82 |
12 |
0 |
0 |
0 |
| OW |
6 |
620 |
137 |
343 |
110 |
64 |
0 |
0 |
| VODI |
0 |
197 |
79 |
953 |
613 |
98 |
7 |
0 |
| ODI |
0 |
5 |
0 |
178 |
773 |
221 |
41 |
0 |
| CDI |
0 |
0 |
0 |
37 |
368 |
1372 |
361 |
5 |
| VCDI |
0 |
0 |
0 |
32 |
266 |
4375 |
13405 |
26525 |
|
...date precedes bulletin
|
Date: 2023-12-28:
| 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 |
6377 |
3369 |
84 |
53 |
2 |
0 |
0 |
0 |
| OW |
0 |
511 |
123 |
216 |
90 |
28 |
0 |
0 |
| VODI |
0 |
232 |
73 |
616 |
666 |
120 |
12 |
0 |
| ODI |
0 |
59 |
12 |
169 |
863 |
293 |
26 |
0 |
| CDI |
0 |
3 |
1 |
35 |
391 |
1269 |
154 |
0 |
| VCDI |
0 |
0 |
0 |
39 |
219 |
3893 |
13034 |
28199 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6377 |
3416 |
103 |
86 |
19 |
0 |
0 |
0 |
| OW |
0 |
456 |
114 |
192 |
94 |
24 |
0 |
0 |
| VODI |
0 |
216 |
63 |
579 |
665 |
116 |
3 |
0 |
| ODI |
0 |
83 |
12 |
192 |
797 |
297 |
25 |
0 |
| CDI |
0 |
3 |
1 |
39 |
409 |
1114 |
177 |
1 |
| VCDI |
0 |
0 |
0 |
40 |
247 |
4052 |
13021 |
28198 |
|
Date: 2023-12-30:
| 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 |
6415 |
3194 |
58 |
94 |
0 |
0 |
0 |
0 |
| OW |
0 |
503 |
103 |
238 |
112 |
6 |
0 |
0 |
| VODI |
0 |
154 |
82 |
507 |
583 |
136 |
20 |
0 |
| ODI |
0 |
67 |
53 |
227 |
711 |
195 |
78 |
0 |
| CDI |
0 |
22 |
28 |
45 |
772 |
493 |
340 |
1 |
| VCDI |
0 |
0 |
1 |
41 |
602 |
3456 |
11108 |
30786 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6415 |
3218 |
82 |
129 |
3 |
0 |
0 |
0 |
| OW |
0 |
485 |
99 |
207 |
93 |
0 |
0 |
0 |
| VODI |
0 |
141 |
58 |
493 |
631 |
112 |
2 |
0 |
| ODI |
0 |
69 |
54 |
238 |
678 |
215 |
48 |
0 |
| CDI |
0 |
27 |
30 |
44 |
729 |
500 |
342 |
0 |
| VCDI |
0 |
0 |
2 |
41 |
646 |
3459 |
11154 |
30787 |
|
Date: 2024-01-01:
| 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 |
6665 |
2993 |
52 |
55 |
3 |
0 |
0 |
0 |
| OW |
0 |
508 |
122 |
118 |
19 |
0 |
0 |
0 |
| VODI |
0 |
34 |
36 |
647 |
198 |
14 |
0 |
0 |
| ODI |
0 |
1 |
1 |
248 |
809 |
90 |
0 |
0 |
| CDI |
0 |
0 |
0 |
40 |
621 |
1540 |
35 |
1 |
| VCDI |
0 |
0 |
0 |
14 |
310 |
4110 |
11263 |
30684 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6665 |
2826 |
58 |
74 |
3 |
0 |
0 |
0 |
| OW |
0 |
446 |
54 |
132 |
35 |
0 |
0 |
0 |
| VODI |
0 |
243 |
83 |
343 |
364 |
43 |
0 |
0 |
| ODI |
0 |
20 |
16 |
268 |
537 |
282 |
24 |
0 |
| CDI |
0 |
1 |
0 |
255 |
522 |
1005 |
370 |
1 |
| VCDI |
0 |
0 |
0 |
50 |
499 |
4424 |
10904 |
30684 |
|
Date: 2024-01-03:
| 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 |
6718 |
2845 |
73 |
95 |
0 |
0 |
0 |
0 |
| OW |
12 |
214 |
75 |
337 |
22 |
0 |
0 |
0 |
| VODI |
9 |
36 |
21 |
324 |
373 |
25 |
0 |
0 |
| ODI |
1 |
2 |
0 |
119 |
640 |
116 |
0 |
0 |
| CDI |
0 |
1 |
0 |
9 |
629 |
1140 |
233 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
780 |
5338 |
15304 |
25740 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6710 |
2627 |
50 |
57 |
0 |
0 |
0 |
0 |
| OW |
14 |
273 |
44 |
156 |
19 |
0 |
0 |
0 |
| VODI |
7 |
166 |
54 |
305 |
220 |
46 |
0 |
0 |
| ODI |
7 |
27 |
20 |
236 |
395 |
389 |
26 |
0 |
| CDI |
2 |
4 |
1 |
116 |
706 |
766 |
458 |
2 |
| VCDI |
0 |
1 |
0 |
14 |
1104 |
5418 |
15053 |
25738 |
|
Date: 2024-01-05:
| 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 |
6667 |
2691 |
59 |
84 |
0 |
0 |
0 |
0 |
| OW |
14 |
211 |
67 |
197 |
34 |
0 |
0 |
0 |
| VODI |
5 |
6 |
10 |
306 |
355 |
38 |
0 |
0 |
| ODI |
0 |
0 |
0 |
72 |
526 |
182 |
0 |
0 |
| CDI |
0 |
1 |
0 |
0 |
370 |
972 |
207 |
6 |
| VCDI |
0 |
0 |
0 |
0 |
941 |
4994 |
12686 |
29530 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6650 |
2615 |
74 |
136 |
9 |
0 |
0 |
0 |
| OW |
15 |
221 |
33 |
136 |
61 |
0 |
0 |
0 |
| VODI |
13 |
67 |
29 |
244 |
167 |
59 |
0 |
0 |
| ODI |
6 |
4 |
0 |
85 |
424 |
254 |
32 |
0 |
| CDI |
2 |
2 |
0 |
57 |
523 |
905 |
590 |
44 |
| VCDI |
0 |
0 |
0 |
1 |
1042 |
4968 |
12271 |
29492 |
|
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