Validation of sea ice concentration - American sector
Bulletin date: 2023-12-07
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2023-12-03:
| 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 |
14510 |
5186 |
353 |
485 |
1 |
0 |
0 |
0 |
| OW |
88 |
1031 |
145 |
918 |
111 |
9 |
0 |
0 |
| VODI |
24 |
137 |
44 |
861 |
543 |
262 |
0 |
0 |
| ODI |
0 |
28 |
12 |
265 |
268 |
324 |
4 |
0 |
| CDI |
0 |
12 |
11 |
88 |
272 |
790 |
307 |
20 |
| VCDI |
0 |
0 |
0 |
26 |
391 |
2925 |
11157 |
19623 |
|
...date precedes bulletin
|
Date: 2023-12-05:
| 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 |
13849 |
6231 |
233 |
207 |
0 |
0 |
0 |
0 |
| OW |
113 |
869 |
276 |
547 |
61 |
0 |
0 |
0 |
| VODI |
14 |
72 |
28 |
1234 |
464 |
8 |
0 |
0 |
| ODI |
0 |
9 |
1 |
187 |
611 |
143 |
14 |
0 |
| CDI |
0 |
2 |
0 |
67 |
210 |
758 |
204 |
1 |
| VCDI |
0 |
0 |
0 |
8 |
180 |
2315 |
11975 |
20340 |
|
...date precedes bulletin
|
Date: 2023-12-07:
| 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 |
13479 |
5968 |
207 |
276 |
5 |
0 |
0 |
0 |
| OW |
178 |
1176 |
207 |
338 |
100 |
0 |
0 |
0 |
| VODI |
18 |
422 |
231 |
1043 |
324 |
55 |
0 |
0 |
| ODI |
0 |
68 |
32 |
196 |
488 |
128 |
0 |
0 |
| CDI |
0 |
16 |
11 |
74 |
387 |
705 |
136 |
1 |
| VCDI |
0 |
0 |
5 |
63 |
192 |
2218 |
10873 |
21611 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13468 |
5954 |
210 |
321 |
20 |
0 |
0 |
0 |
| OW |
183 |
1175 |
218 |
307 |
88 |
1 |
0 |
0 |
| VODI |
23 |
439 |
221 |
1008 |
284 |
67 |
0 |
0 |
| ODI |
1 |
70 |
30 |
218 |
505 |
116 |
0 |
0 |
| CDI |
0 |
12 |
12 |
82 |
393 |
782 |
174 |
4 |
| VCDI |
0 |
0 |
2 |
54 |
206 |
2140 |
10835 |
21608 |
|
Date: 2023-12-09:
| 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 |
12124 |
5623 |
444 |
548 |
0 |
0 |
0 |
0 |
| OW |
605 |
701 |
202 |
899 |
146 |
2 |
0 |
0 |
| VODI |
364 |
190 |
64 |
576 |
818 |
56 |
0 |
0 |
| ODI |
23 |
25 |
8 |
165 |
437 |
373 |
17 |
0 |
| CDI |
0 |
12 |
5 |
54 |
238 |
1125 |
496 |
20 |
| VCDI |
0 |
0 |
4 |
58 |
207 |
1615 |
6971 |
26016 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12075 |
5594 |
429 |
695 |
3 |
0 |
0 |
0 |
| OW |
567 |
730 |
210 |
764 |
179 |
0 |
0 |
0 |
| VODI |
451 |
193 |
74 |
568 |
796 |
80 |
0 |
0 |
| ODI |
23 |
29 |
7 |
166 |
423 |
299 |
19 |
0 |
| CDI |
0 |
5 |
5 |
53 |
243 |
1186 |
520 |
20 |
| VCDI |
0 |
0 |
2 |
54 |
202 |
1606 |
6945 |
26016 |
|
Date: 2023-12-11:
| 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 |
10218 |
6174 |
406 |
836 |
79 |
0 |
0 |
0 |
| OW |
221 |
582 |
315 |
815 |
173 |
0 |
0 |
0 |
| VODI |
15 |
63 |
30 |
854 |
475 |
5 |
0 |
0 |
| ODI |
0 |
3 |
0 |
189 |
920 |
103 |
0 |
0 |
| CDI |
0 |
0 |
0 |
24 |
723 |
1370 |
33 |
0 |
| VCDI |
0 |
0 |
0 |
6 |
139 |
1934 |
6922 |
27604 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10168 |
5724 |
408 |
1107 |
219 |
0 |
0 |
0 |
| OW |
230 |
843 |
235 |
718 |
461 |
1 |
0 |
0 |
| VODI |
51 |
238 |
100 |
661 |
811 |
188 |
0 |
0 |
| ODI |
5 |
17 |
8 |
193 |
586 |
497 |
38 |
0 |
| CDI |
0 |
0 |
0 |
33 |
268 |
1006 |
683 |
0 |
| VCDI |
0 |
0 |
0 |
12 |
164 |
1720 |
6234 |
27604 |
|
Date: 2023-12-13:
| 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 |
8959 |
5475 |
307 |
1133 |
434 |
1 |
0 |
0 |
| OW |
174 |
604 |
175 |
810 |
508 |
43 |
0 |
0 |
| VODI |
53 |
127 |
48 |
724 |
620 |
108 |
0 |
0 |
| ODI |
1 |
0 |
1 |
287 |
579 |
266 |
0 |
0 |
| CDI |
0 |
0 |
0 |
58 |
392 |
1101 |
166 |
4 |
| VCDI |
0 |
0 |
0 |
16 |
496 |
3251 |
6887 |
27423 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8939 |
4977 |
252 |
950 |
543 |
3 |
0 |
0 |
| OW |
144 |
949 |
221 |
874 |
569 |
100 |
0 |
0 |
| VODI |
95 |
279 |
57 |
760 |
663 |
314 |
0 |
0 |
| ODI |
9 |
1 |
1 |
351 |
466 |
605 |
40 |
0 |
| CDI |
0 |
0 |
0 |
72 |
359 |
1271 |
833 |
0 |
| VCDI |
0 |
0 |
0 |
21 |
429 |
2477 |
6180 |
27427 |
|
Date: 2023-12-15:
| 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 |
8829 |
4717 |
234 |
703 |
462 |
33 |
0 |
0 |
| OW |
128 |
691 |
184 |
711 |
493 |
155 |
0 |
0 |
| VODI |
117 |
205 |
112 |
645 |
707 |
225 |
0 |
0 |
| ODI |
6 |
15 |
11 |
230 |
673 |
376 |
0 |
0 |
| CDI |
0 |
6 |
5 |
66 |
413 |
1450 |
5 |
0 |
| VCDI |
0 |
13 |
3 |
26 |
304 |
3553 |
5982 |
28743 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8666 |
3912 |
171 |
671 |
559 |
54 |
0 |
0 |
| OW |
177 |
1020 |
168 |
563 |
465 |
197 |
0 |
0 |
| VODI |
166 |
608 |
137 |
644 |
784 |
376 |
0 |
0 |
| ODI |
71 |
77 |
50 |
394 |
584 |
499 |
4 |
0 |
| CDI |
0 |
13 |
23 |
106 |
375 |
1976 |
182 |
0 |
| VCDI |
0 |
17 |
0 |
3 |
285 |
2690 |
5801 |
28743 |
|
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