Validation of sea ice concentration - American sector
Bulletin date: 2023-11-30
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-11-24:
| 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 |
19063 |
5157 |
90 |
78 |
0 |
0 |
0 |
0 |
| OW |
29 |
394 |
137 |
315 |
15 |
0 |
0 |
0 |
| VODI |
13 |
121 |
68 |
298 |
149 |
61 |
0 |
0 |
| ODI |
1 |
27 |
23 |
140 |
216 |
153 |
0 |
0 |
| CDI |
0 |
1 |
0 |
122 |
294 |
840 |
66 |
0 |
| VCDI |
0 |
0 |
0 |
18 |
357 |
3378 |
8493 |
21114 |
|
...date precedes bulletin
|
Date: 2023-11-26:
| 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 |
18443 |
5343 |
117 |
81 |
0 |
0 |
0 |
0 |
| OW |
49 |
516 |
123 |
335 |
19 |
0 |
0 |
0 |
| VODI |
11 |
131 |
63 |
313 |
254 |
24 |
0 |
0 |
| ODI |
1 |
44 |
29 |
112 |
232 |
121 |
0 |
0 |
| CDI |
0 |
9 |
27 |
124 |
241 |
511 |
48 |
0 |
| VCDI |
0 |
0 |
4 |
89 |
494 |
3135 |
7588 |
22600 |
|
...date precedes bulletin
|
Date: 2023-11-28:
| 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 |
17353 |
5787 |
241 |
240 |
3 |
0 |
0 |
0 |
| OW |
32 |
451 |
152 |
423 |
46 |
0 |
0 |
0 |
| VODI |
6 |
100 |
44 |
407 |
321 |
11 |
0 |
0 |
| ODI |
1 |
13 |
5 |
84 |
308 |
151 |
1 |
0 |
| CDI |
0 |
3 |
0 |
36 |
240 |
805 |
102 |
3 |
| VCDI |
0 |
0 |
0 |
8 |
287 |
2485 |
7472 |
23610 |
|
...date precedes bulletin
|
Date: 2023-11-30:
| 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 |
16200 |
5465 |
379 |
756 |
20 |
0 |
0 |
0 |
| OW |
129 |
353 |
99 |
608 |
233 |
5 |
0 |
0 |
| VODI |
10 |
157 |
31 |
291 |
284 |
208 |
0 |
0 |
| ODI |
1 |
92 |
14 |
111 |
217 |
253 |
5 |
0 |
| CDI |
0 |
10 |
11 |
60 |
291 |
568 |
156 |
3 |
| VCDI |
0 |
0 |
0 |
19 |
511 |
2444 |
8201 |
23036 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16197 |
5463 |
371 |
799 |
35 |
0 |
0 |
0 |
| OW |
129 |
350 |
101 |
544 |
220 |
12 |
0 |
0 |
| VODI |
14 |
156 |
39 |
292 |
287 |
204 |
2 |
0 |
| ODI |
0 |
97 |
11 |
117 |
202 |
225 |
6 |
0 |
| CDI |
0 |
11 |
12 |
73 |
288 |
660 |
185 |
4 |
| VCDI |
0 |
0 |
0 |
20 |
524 |
2377 |
8169 |
23035 |
|
Date: 2023-12-02:
| 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 |
14833 |
5341 |
303 |
726 |
3 |
0 |
0 |
0 |
| OW |
90 |
699 |
113 |
941 |
214 |
17 |
0 |
0 |
| VODI |
13 |
119 |
23 |
604 |
533 |
293 |
0 |
0 |
| ODI |
0 |
32 |
9 |
202 |
247 |
353 |
23 |
0 |
| CDI |
0 |
7 |
7 |
79 |
232 |
879 |
266 |
0 |
| VCDI |
0 |
0 |
0 |
18 |
589 |
2924 |
10310 |
20189 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14843 |
5439 |
329 |
810 |
24 |
0 |
0 |
0 |
| OW |
85 |
592 |
86 |
859 |
184 |
30 |
0 |
0 |
| VODI |
8 |
123 |
22 |
572 |
516 |
288 |
0 |
0 |
| ODI |
0 |
33 |
11 |
211 |
249 |
330 |
26 |
0 |
| CDI |
0 |
11 |
7 |
102 |
267 |
935 |
321 |
2 |
| VCDI |
0 |
0 |
0 |
16 |
578 |
2883 |
10252 |
20187 |
|
Date: 2023-12-04:
| 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 |
13500 |
6743 |
265 |
209 |
1 |
0 |
0 |
0 |
| OW |
47 |
861 |
305 |
591 |
20 |
0 |
0 |
0 |
| VODI |
2 |
71 |
36 |
1352 |
296 |
0 |
0 |
0 |
| ODI |
0 |
5 |
5 |
180 |
764 |
60 |
0 |
0 |
| CDI |
0 |
1 |
1 |
51 |
288 |
807 |
61 |
5 |
| VCDI |
0 |
0 |
0 |
2 |
165 |
2510 |
12573 |
19454 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13448 |
6429 |
292 |
419 |
21 |
0 |
0 |
0 |
| OW |
96 |
1000 |
205 |
584 |
72 |
9 |
0 |
0 |
| VODI |
5 |
187 |
78 |
988 |
476 |
131 |
33 |
0 |
| ODI |
0 |
43 |
21 |
230 |
478 |
127 |
71 |
0 |
| CDI |
0 |
22 |
14 |
106 |
241 |
509 |
579 |
9 |
| VCDI |
0 |
0 |
2 |
58 |
246 |
2601 |
11951 |
19450 |
|
Date: 2023-12-06:
| 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 |
14015 |
5764 |
166 |
302 |
15 |
0 |
0 |
0 |
| OW |
128 |
1057 |
233 |
346 |
120 |
0 |
0 |
0 |
| VODI |
17 |
146 |
137 |
1204 |
380 |
84 |
0 |
0 |
| ODI |
0 |
20 |
12 |
210 |
535 |
152 |
2 |
0 |
| CDI |
0 |
3 |
6 |
76 |
297 |
876 |
193 |
1 |
| VCDI |
0 |
0 |
0 |
34 |
187 |
2324 |
11564 |
20625 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13865 |
5295 |
146 |
249 |
68 |
7 |
0 |
0 |
| OW |
226 |
1259 |
227 |
461 |
106 |
49 |
0 |
0 |
| VODI |
69 |
353 |
136 |
992 |
384 |
201 |
38 |
0 |
| ODI |
0 |
46 |
22 |
243 |
452 |
216 |
68 |
0 |
| CDI |
0 |
36 |
19 |
108 |
275 |
573 |
344 |
0 |
| VCDI |
0 |
1 |
4 |
119 |
249 |
2390 |
11309 |
20626 |
|
Date: 2023-12-08:
| 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 |
12962 |
5890 |
374 |
207 |
14 |
0 |
0 |
0 |
| OW |
268 |
1076 |
279 |
559 |
68 |
1 |
0 |
0 |
| VODI |
90 |
488 |
137 |
933 |
376 |
45 |
0 |
0 |
| ODI |
1 |
65 |
10 |
216 |
405 |
282 |
3 |
0 |
| CDI |
0 |
27 |
3 |
93 |
226 |
1095 |
214 |
6 |
| VCDI |
0 |
3 |
16 |
86 |
170 |
1744 |
8156 |
24643 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12760 |
5263 |
324 |
257 |
7 |
0 |
0 |
0 |
| OW |
346 |
1235 |
219 |
446 |
73 |
12 |
0 |
0 |
| VODI |
201 |
864 |
234 |
864 |
359 |
239 |
0 |
0 |
| ODI |
14 |
98 |
14 |
300 |
383 |
373 |
14 |
0 |
| CDI |
0 |
47 |
5 |
71 |
199 |
637 |
202 |
7 |
| VCDI |
0 |
42 |
23 |
156 |
238 |
1906 |
8157 |
24642 |
|
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