Validation of sea ice concentration - American sector
Bulletin date: 2023-11-23
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-11-17:
| 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 |
22488 |
2712 |
86 |
99 |
70 |
0 |
0 |
0 |
| OW |
153 |
131 |
66 |
284 |
371 |
0 |
0 |
0 |
| VODI |
33 |
54 |
19 |
171 |
659 |
72 |
0 |
0 |
| ODI |
0 |
14 |
14 |
68 |
667 |
241 |
0 |
0 |
| CDI |
0 |
9 |
7 |
74 |
598 |
1302 |
97 |
4 |
| VCDI |
0 |
0 |
0 |
145 |
351 |
3515 |
6675 |
19982 |
|
...date precedes bulletin
|
Date: 2023-11-19:
| 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 |
21476 |
3051 |
101 |
70 |
12 |
11 |
0 |
0 |
| OW |
195 |
315 |
78 |
212 |
183 |
54 |
0 |
0 |
| VODI |
51 |
119 |
16 |
247 |
313 |
366 |
26 |
0 |
| ODI |
5 |
19 |
9 |
108 |
373 |
405 |
77 |
0 |
| CDI |
0 |
1 |
8 |
74 |
508 |
885 |
252 |
0 |
| VCDI |
0 |
0 |
0 |
97 |
310 |
2251 |
7060 |
21893 |
|
...date precedes bulletin
|
Date: 2023-11-21:
| 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 |
20532 |
4146 |
129 |
30 |
0 |
0 |
0 |
0 |
| OW |
87 |
419 |
132 |
70 |
0 |
3 |
0 |
0 |
| VODI |
14 |
91 |
79 |
317 |
128 |
61 |
0 |
0 |
| ODI |
0 |
35 |
3 |
193 |
386 |
190 |
0 |
0 |
| CDI |
1 |
0 |
0 |
72 |
489 |
799 |
58 |
0 |
| VCDI |
0 |
0 |
0 |
74 |
486 |
3004 |
8008 |
21195 |
|
...date precedes bulletin
|
Date: 2023-11-23:
| 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 |
18634 |
5755 |
114 |
97 |
0 |
0 |
0 |
0 |
| OW |
17 |
353 |
118 |
333 |
6 |
0 |
0 |
0 |
| VODI |
11 |
114 |
61 |
306 |
175 |
58 |
0 |
0 |
| ODI |
1 |
22 |
21 |
144 |
225 |
159 |
0 |
0 |
| CDI |
0 |
0 |
1 |
123 |
375 |
572 |
26 |
2 |
| VCDI |
0 |
0 |
0 |
7 |
471 |
3986 |
7974 |
20970 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18629 |
5748 |
110 |
129 |
0 |
0 |
0 |
0 |
| OW |
22 |
344 |
118 |
291 |
14 |
0 |
0 |
0 |
| VODI |
10 |
126 |
65 |
296 |
165 |
57 |
0 |
0 |
| ODI |
1 |
26 |
17 |
164 |
208 |
150 |
0 |
0 |
| CDI |
1 |
0 |
5 |
120 |
385 |
561 |
29 |
1 |
| VCDI |
0 |
0 |
0 |
10 |
480 |
4007 |
7971 |
20971 |
|
Date: 2023-11-25:
| 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 |
19377 |
4665 |
107 |
57 |
0 |
0 |
0 |
0 |
| OW |
54 |
426 |
106 |
345 |
26 |
0 |
0 |
0 |
| VODI |
18 |
115 |
52 |
283 |
192 |
33 |
0 |
0 |
| ODI |
2 |
26 |
22 |
127 |
235 |
145 |
0 |
0 |
| CDI |
0 |
5 |
2 |
127 |
294 |
617 |
56 |
3 |
| VCDI |
0 |
0 |
0 |
32 |
360 |
3023 |
7468 |
22831 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19382 |
4632 |
105 |
101 |
0 |
0 |
0 |
0 |
| OW |
49 |
420 |
101 |
309 |
29 |
1 |
0 |
0 |
| VODI |
18 |
156 |
57 |
259 |
175 |
34 |
0 |
0 |
| ODI |
1 |
23 |
23 |
152 |
212 |
141 |
0 |
0 |
| CDI |
1 |
6 |
3 |
114 |
312 |
592 |
73 |
3 |
| VCDI |
0 |
0 |
0 |
36 |
379 |
3050 |
7451 |
22831 |
|
Date: 2023-11-27:
| 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 |
18002 |
5633 |
136 |
88 |
2 |
0 |
0 |
0 |
| OW |
40 |
531 |
216 |
279 |
3 |
0 |
0 |
0 |
| VODI |
6 |
83 |
39 |
573 |
166 |
0 |
0 |
0 |
| ODI |
1 |
8 |
4 |
74 |
502 |
37 |
2 |
0 |
| CDI |
0 |
0 |
0 |
58 |
257 |
799 |
33 |
0 |
| VCDI |
0 |
0 |
1 |
13 |
252 |
2658 |
7382 |
23353 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18004 |
5521 |
171 |
156 |
3 |
0 |
0 |
0 |
| OW |
33 |
485 |
113 |
335 |
50 |
0 |
0 |
0 |
| VODI |
11 |
165 |
63 |
296 |
281 |
12 |
0 |
0 |
| ODI |
0 |
63 |
22 |
106 |
257 |
97 |
0 |
0 |
| CDI |
1 |
20 |
25 |
101 |
206 |
519 |
61 |
0 |
| VCDI |
0 |
1 |
2 |
91 |
385 |
2866 |
7356 |
23353 |
|
Date: 2023-11-29:
| 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 |
16515 |
5895 |
423 |
429 |
13 |
0 |
0 |
0 |
| OW |
39 |
444 |
102 |
443 |
193 |
5 |
0 |
0 |
| VODI |
1 |
128 |
48 |
309 |
232 |
190 |
1 |
0 |
| ODI |
1 |
51 |
9 |
98 |
187 |
224 |
4 |
0 |
| CDI |
0 |
3 |
7 |
49 |
263 |
721 |
62 |
7 |
| VCDI |
0 |
0 |
0 |
12 |
304 |
2373 |
8308 |
23138 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16437 |
5583 |
329 |
434 |
86 |
18 |
0 |
0 |
| OW |
100 |
607 |
145 |
321 |
171 |
177 |
0 |
0 |
| VODI |
18 |
227 |
79 |
313 |
112 |
221 |
0 |
0 |
| ODI |
1 |
75 |
15 |
142 |
194 |
166 |
1 |
0 |
| CDI |
0 |
23 |
12 |
64 |
202 |
416 |
41 |
6 |
| VCDI |
0 |
6 |
9 |
66 |
427 |
2515 |
8333 |
23139 |
|
Date: 2023-12-01:
| 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 |
15682 |
5309 |
368 |
582 |
13 |
0 |
0 |
0 |
| OW |
84 |
485 |
98 |
1018 |
252 |
6 |
0 |
0 |
| VODI |
1 |
123 |
43 |
447 |
332 |
225 |
0 |
0 |
| ODI |
1 |
58 |
9 |
187 |
217 |
305 |
0 |
0 |
| CDI |
0 |
12 |
16 |
74 |
300 |
777 |
146 |
12 |
| VCDI |
0 |
0 |
0 |
20 |
592 |
2738 |
7679 |
23020 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15511 |
5152 |
320 |
666 |
81 |
6 |
0 |
0 |
| OW |
202 |
369 |
95 |
811 |
144 |
145 |
0 |
0 |
| VODI |
54 |
243 |
60 |
416 |
274 |
266 |
0 |
0 |
| ODI |
1 |
113 |
35 |
200 |
192 |
220 |
0 |
0 |
| CDI |
0 |
88 |
11 |
154 |
296 |
645 |
173 |
17 |
| VCDI |
0 |
22 |
13 |
81 |
719 |
2769 |
7652 |
23015 |
|
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