Validation of sea ice concentration - Full domain
Bulletin date: 2023-12-21
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
78866 |
14648 |
480 |
995 |
513 |
35 |
0 |
0 |
| OW |
152 |
1674 |
360 |
1313 |
683 |
168 |
0 |
0 |
| VODI |
120 |
723 |
309 |
1438 |
1405 |
384 |
0 |
0 |
| ODI |
6 |
221 |
89 |
644 |
1238 |
677 |
0 |
0 |
| CDI |
2 |
117 |
130 |
592 |
1406 |
2785 |
401 |
0 |
| VCDI |
8 |
48 |
28 |
190 |
914 |
8072 |
17706 |
55203 |
|
...date precedes bulletin
|
Date: 2023-12-17:
| 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 |
78683 |
13984 |
389 |
699 |
348 |
320 |
0 |
0 |
| OW |
60 |
1611 |
326 |
1021 |
408 |
288 |
4 |
0 |
| VODI |
17 |
741 |
297 |
1376 |
1243 |
810 |
14 |
0 |
| ODI |
0 |
246 |
160 |
790 |
1097 |
1125 |
58 |
0 |
| CDI |
5 |
128 |
106 |
665 |
1304 |
2562 |
889 |
2 |
| VCDI |
5 |
35 |
43 |
236 |
840 |
7808 |
18080 |
55920 |
|
...date precedes bulletin
|
Date: 2023-12-19:
| 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 |
77046 |
15211 |
418 |
527 |
209 |
142 |
5 |
0 |
| OW |
18 |
1403 |
525 |
981 |
266 |
134 |
27 |
0 |
| VODI |
6 |
236 |
162 |
1801 |
906 |
174 |
37 |
0 |
| ODI |
1 |
36 |
25 |
628 |
1732 |
560 |
55 |
0 |
| CDI |
5 |
11 |
29 |
259 |
1702 |
3495 |
744 |
45 |
| VCDI |
5 |
0 |
10 |
126 |
866 |
7670 |
21438 |
55067 |
|
...date precedes bulletin
|
Date: 2023-12-21:
| 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 |
75482 |
15083 |
527 |
673 |
156 |
129 |
0 |
0 |
| OW |
18 |
1200 |
431 |
982 |
382 |
155 |
0 |
0 |
| VODI |
7 |
350 |
158 |
1283 |
991 |
256 |
0 |
0 |
| ODI |
0 |
46 |
37 |
744 |
1626 |
636 |
47 |
0 |
| CDI |
5 |
2 |
9 |
350 |
2001 |
2851 |
809 |
8 |
| VCDI |
5 |
0 |
3 |
114 |
750 |
8687 |
21933 |
55817 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
75484 |
15028 |
522 |
711 |
223 |
151 |
0 |
0 |
| OW |
16 |
1140 |
443 |
934 |
317 |
116 |
0 |
0 |
| VODI |
7 |
443 |
149 |
1285 |
925 |
234 |
0 |
0 |
| ODI |
0 |
65 |
37 |
694 |
1603 |
632 |
33 |
0 |
| CDI |
3 |
5 |
10 |
397 |
2083 |
2819 |
780 |
7 |
| VCDI |
7 |
0 |
4 |
125 |
755 |
8762 |
21976 |
55818 |
|
Date: 2023-12-23:
| 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 |
74604 |
14693 |
402 |
469 |
159 |
18 |
0 |
0 |
| OW |
43 |
1212 |
367 |
1134 |
345 |
73 |
0 |
0 |
| VODI |
1 |
563 |
215 |
1319 |
1077 |
116 |
21 |
0 |
| ODI |
0 |
135 |
69 |
704 |
1596 |
424 |
89 |
0 |
| CDI |
2 |
21 |
37 |
543 |
1924 |
2335 |
929 |
16 |
| VCDI |
8 |
0 |
0 |
45 |
895 |
8512 |
20338 |
59290 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74601 |
14595 |
445 |
545 |
205 |
55 |
0 |
0 |
| OW |
46 |
1229 |
335 |
1050 |
291 |
39 |
0 |
0 |
| VODI |
1 |
563 |
200 |
1339 |
996 |
100 |
27 |
0 |
| ODI |
0 |
187 |
62 |
658 |
1513 |
418 |
61 |
0 |
| CDI |
1 |
49 |
47 |
564 |
2000 |
2371 |
974 |
15 |
| VCDI |
9 |
1 |
1 |
58 |
991 |
8495 |
20315 |
59291 |
|
Date: 2023-12-25:
| 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 |
74193 |
14378 |
264 |
257 |
30 |
4 |
0 |
0 |
| OW |
59 |
1627 |
471 |
841 |
117 |
50 |
3 |
0 |
| VODI |
7 |
241 |
136 |
2156 |
668 |
73 |
14 |
0 |
| ODI |
0 |
21 |
33 |
560 |
2135 |
259 |
28 |
0 |
| CDI |
1 |
0 |
2 |
198 |
1780 |
3577 |
334 |
3 |
| VCDI |
9 |
0 |
0 |
22 |
371 |
7874 |
25902 |
56045 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74155 |
14038 |
318 |
428 |
163 |
90 |
0 |
0 |
| OW |
98 |
1182 |
278 |
1002 |
224 |
101 |
23 |
0 |
| VODI |
4 |
652 |
178 |
1386 |
876 |
249 |
104 |
0 |
| ODI |
2 |
269 |
58 |
658 |
1301 |
525 |
108 |
0 |
| CDI |
1 |
119 |
73 |
477 |
1687 |
2547 |
1176 |
3 |
| VCDI |
9 |
7 |
1 |
83 |
850 |
8325 |
24870 |
56045 |
|
Date: 2023-12-27:
| 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 |
74199 |
14091 |
239 |
228 |
14 |
0 |
0 |
0 |
| OW |
149 |
1536 |
418 |
566 |
171 |
60 |
1 |
0 |
| VODI |
4 |
662 |
296 |
1474 |
752 |
107 |
14 |
0 |
| ODI |
0 |
100 |
74 |
658 |
1498 |
312 |
55 |
0 |
| CDI |
1 |
19 |
32 |
513 |
1708 |
2029 |
383 |
0 |
| VCDI |
9 |
0 |
8 |
234 |
1292 |
8865 |
24454 |
57518 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74140 |
13324 |
233 |
316 |
130 |
59 |
0 |
0 |
| OW |
172 |
1322 |
300 |
581 |
271 |
162 |
17 |
0 |
| VODI |
40 |
976 |
228 |
1074 |
697 |
241 |
73 |
0 |
| ODI |
0 |
481 |
130 |
569 |
1064 |
445 |
165 |
0 |
| CDI |
0 |
294 |
132 |
667 |
1658 |
1580 |
990 |
28 |
| VCDI |
10 |
11 |
44 |
466 |
1615 |
8886 |
23662 |
57490 |
|
Date: 2023-12-29:
| 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 |
73972 |
13864 |
317 |
321 |
8 |
0 |
0 |
0 |
| OW |
201 |
1501 |
261 |
616 |
163 |
17 |
0 |
0 |
| VODI |
10 |
606 |
221 |
1022 |
809 |
204 |
15 |
0 |
| ODI |
0 |
259 |
79 |
552 |
1291 |
529 |
62 |
0 |
| CDI |
0 |
124 |
71 |
310 |
1523 |
1918 |
698 |
0 |
| VCDI |
10 |
42 |
56 |
375 |
1323 |
8197 |
24599 |
58597 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
73734 |
12852 |
277 |
344 |
25 |
7 |
0 |
0 |
| OW |
277 |
1364 |
195 |
578 |
309 |
167 |
21 |
0 |
| VODI |
120 |
900 |
202 |
718 |
683 |
293 |
94 |
0 |
| ODI |
52 |
511 |
80 |
574 |
749 |
505 |
117 |
0 |
| CDI |
3 |
494 |
128 |
464 |
1369 |
1643 |
771 |
9 |
| VCDI |
7 |
275 |
123 |
518 |
1982 |
8250 |
24371 |
58588 |
|
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