Validation of sea ice concentration - American sector
Bulletin date: 2023-10-26
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-10-20:
| 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 |
13733 |
6818 |
453 |
888 |
335 |
25 |
0 |
0 |
| OW |
6 |
202 |
51 |
334 |
484 |
81 |
0 |
0 |
| VODI |
0 |
34 |
26 |
205 |
573 |
316 |
1 |
0 |
| ODI |
0 |
0 |
0 |
38 |
228 |
478 |
39 |
0 |
| CDI |
0 |
0 |
0 |
8 |
126 |
927 |
139 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
68 |
1943 |
7599 |
9708 |
|
...date precedes bulletin
|
Date: 2023-10-22:
| 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 |
13347 |
6363 |
411 |
734 |
265 |
143 |
16 |
0 |
| OW |
24 |
277 |
108 |
505 |
294 |
46 |
31 |
0 |
| VODI |
0 |
24 |
22 |
337 |
597 |
169 |
54 |
0 |
| ODI |
0 |
4 |
6 |
41 |
398 |
307 |
46 |
0 |
| CDI |
0 |
0 |
1 |
25 |
236 |
542 |
74 |
0 |
| VCDI |
0 |
0 |
0 |
10 |
123 |
3302 |
7687 |
9297 |
|
...date precedes bulletin
|
Date: 2023-10-24:
| 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 |
13823 |
6392 |
453 |
626 |
104 |
1 |
0 |
0 |
| OW |
2 |
72 |
75 |
557 |
170 |
13 |
0 |
0 |
| VODI |
0 |
10 |
4 |
329 |
673 |
36 |
0 |
0 |
| ODI |
0 |
1 |
0 |
80 |
642 |
202 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
320 |
924 |
1 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
73 |
2885 |
8046 |
9347 |
|
...date precedes bulletin
|
Date: 2023-10-26:
| 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 |
13628 |
5920 |
402 |
645 |
77 |
0 |
0 |
0 |
| OW |
3 |
133 |
89 |
623 |
260 |
7 |
0 |
0 |
| VODI |
0 |
18 |
18 |
329 |
559 |
206 |
0 |
0 |
| ODI |
0 |
0 |
1 |
53 |
501 |
389 |
0 |
0 |
| CDI |
0 |
0 |
0 |
2 |
292 |
1003 |
37 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
118 |
3746 |
7672 |
9135 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13619 |
5817 |
400 |
792 |
159 |
0 |
0 |
0 |
| OW |
12 |
235 |
81 |
465 |
238 |
34 |
0 |
0 |
| VODI |
0 |
19 |
28 |
337 |
533 |
191 |
0 |
0 |
| ODI |
0 |
0 |
1 |
55 |
477 |
378 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
290 |
944 |
8 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
110 |
3804 |
7701 |
9135 |
|
Date: 2023-10-28:
| 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 |
12142 |
6218 |
456 |
819 |
212 |
0 |
0 |
0 |
| OW |
3 |
137 |
74 |
711 |
368 |
43 |
0 |
0 |
| VODI |
0 |
1 |
8 |
221 |
722 |
263 |
0 |
0 |
| ODI |
0 |
0 |
0 |
40 |
330 |
603 |
5 |
0 |
| CDI |
0 |
0 |
0 |
4 |
170 |
1108 |
71 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
15 |
3934 |
7576 |
9612 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12142 |
6145 |
463 |
1025 |
278 |
2 |
0 |
0 |
| OW |
3 |
199 |
54 |
492 |
338 |
64 |
0 |
0 |
| VODI |
0 |
12 |
21 |
242 |
716 |
244 |
0 |
0 |
| ODI |
0 |
0 |
0 |
32 |
340 |
556 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
130 |
948 |
60 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
15 |
4137 |
7592 |
9612 |
|
Date: 2023-10-30:
| 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 |
11033 |
6016 |
481 |
845 |
326 |
17 |
0 |
0 |
| OW |
5 |
43 |
73 |
632 |
191 |
21 |
0 |
0 |
| VODI |
0 |
0 |
1 |
357 |
618 |
36 |
0 |
0 |
| ODI |
0 |
0 |
0 |
6 |
1035 |
322 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
148 |
1668 |
84 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
11 |
2095 |
8833 |
10969 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11034 |
5837 |
503 |
1267 |
590 |
51 |
0 |
0 |
| OW |
4 |
164 |
27 |
378 |
476 |
80 |
0 |
0 |
| VODI |
0 |
58 |
25 |
181 |
774 |
366 |
0 |
0 |
| ODI |
0 |
0 |
0 |
14 |
270 |
602 |
41 |
0 |
| CDI |
0 |
0 |
0 |
0 |
169 |
685 |
275 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
50 |
2375 |
8601 |
10969 |
|
Date: 2023-11-01:
| 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 |
10252 |
5536 |
478 |
838 |
515 |
157 |
6 |
0 |
| OW |
8 |
96 |
63 |
526 |
346 |
145 |
10 |
0 |
| VODI |
0 |
24 |
29 |
207 |
604 |
332 |
14 |
0 |
| ODI |
0 |
5 |
2 |
61 |
399 |
404 |
27 |
0 |
| CDI |
0 |
0 |
0 |
10 |
420 |
895 |
143 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
30 |
1515 |
5712 |
16057 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10253 |
5298 |
389 |
945 |
809 |
282 |
20 |
0 |
| OW |
7 |
348 |
169 |
434 |
334 |
248 |
23 |
0 |
| VODI |
0 |
15 |
14 |
251 |
709 |
432 |
71 |
0 |
| ODI |
0 |
0 |
0 |
12 |
231 |
612 |
98 |
0 |
| CDI |
0 |
0 |
0 |
0 |
175 |
599 |
340 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
56 |
1275 |
5360 |
16057 |
|
Date: 2023-11-03:
| 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 |
10474 |
4479 |
387 |
664 |
541 |
101 |
0 |
0 |
| OW |
21 |
163 |
98 |
569 |
406 |
285 |
10 |
0 |
| VODI |
0 |
24 |
39 |
297 |
466 |
297 |
18 |
0 |
| ODI |
0 |
5 |
7 |
120 |
507 |
336 |
37 |
0 |
| CDI |
0 |
0 |
0 |
39 |
409 |
486 |
141 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
373 |
1600 |
6948 |
15519 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10455 |
4439 |
371 |
696 |
856 |
375 |
6 |
0 |
| OW |
39 |
219 |
133 |
543 |
307 |
256 |
29 |
0 |
| VODI |
1 |
13 |
27 |
388 |
711 |
474 |
90 |
0 |
| ODI |
0 |
0 |
0 |
43 |
324 |
461 |
137 |
0 |
| CDI |
0 |
0 |
0 |
19 |
209 |
355 |
345 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
295 |
1184 |
6547 |
15519 |
|
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