Validation of sea ice concentration - Full domain
Bulletin date: 2025-01-23
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-17:
| 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 |
71475 |
16534 |
418 |
395 |
15 |
9 |
0 |
0 |
| OW |
157 |
1212 |
295 |
898 |
164 |
31 |
0 |
0 |
| VODI |
16 |
395 |
145 |
880 |
652 |
171 |
2 |
0 |
| ODI |
3 |
89 |
63 |
380 |
761 |
511 |
46 |
0 |
| CDI |
3 |
25 |
47 |
350 |
991 |
1764 |
1131 |
55 |
| VCDI |
7 |
0 |
11 |
105 |
611 |
3873 |
24874 |
65179 |
|
...date precedes bulletin
|
Date: 2025-01-19:
| 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 |
72650 |
14944 |
396 |
358 |
20 |
0 |
0 |
0 |
| OW |
293 |
1053 |
248 |
812 |
206 |
2 |
0 |
0 |
| VODI |
23 |
470 |
125 |
769 |
801 |
104 |
0 |
0 |
| ODI |
2 |
129 |
91 |
405 |
818 |
448 |
22 |
3 |
| CDI |
3 |
23 |
64 |
408 |
1021 |
1656 |
770 |
21 |
| VCDI |
7 |
1 |
0 |
95 |
984 |
5452 |
26119 |
62927 |
|
...date precedes bulletin
|
Date: 2025-01-21:
| 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 |
71680 |
15952 |
439 |
484 |
8 |
0 |
0 |
0 |
| OW |
92 |
728 |
225 |
851 |
144 |
0 |
0 |
0 |
| VODI |
13 |
193 |
76 |
796 |
796 |
38 |
0 |
0 |
| ODI |
0 |
56 |
39 |
343 |
1118 |
358 |
3 |
0 |
| CDI |
0 |
4 |
12 |
170 |
917 |
2600 |
813 |
9 |
| VCDI |
10 |
0 |
0 |
11 |
339 |
5001 |
28914 |
61511 |
|
...date precedes bulletin
|
Date: 2025-01-23:
| 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 |
71196 |
16029 |
364 |
343 |
42 |
0 |
0 |
0 |
| OW |
96 |
904 |
320 |
704 |
141 |
2 |
0 |
0 |
| VODI |
17 |
337 |
129 |
814 |
493 |
33 |
0 |
0 |
| ODI |
1 |
138 |
59 |
317 |
913 |
383 |
8 |
0 |
| CDI |
0 |
42 |
25 |
276 |
944 |
2416 |
794 |
23 |
| VCDI |
0 |
8 |
6 |
66 |
503 |
5460 |
27841 |
62556 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71205 |
16104 |
376 |
363 |
39 |
0 |
0 |
0 |
| OW |
88 |
834 |
318 |
720 |
150 |
3 |
0 |
0 |
| VODI |
16 |
344 |
126 |
795 |
517 |
55 |
0 |
0 |
| ODI |
1 |
134 |
51 |
309 |
870 |
409 |
7 |
0 |
| CDI |
0 |
37 |
27 |
258 |
956 |
2403 |
866 |
30 |
| VCDI |
0 |
5 |
5 |
75 |
504 |
5424 |
27770 |
62549 |
|
Date: 2025-01-25:
| 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 |
69795 |
16911 |
403 |
300 |
50 |
1 |
0 |
0 |
| OW |
28 |
1153 |
310 |
708 |
139 |
30 |
0 |
0 |
| VODI |
4 |
480 |
185 |
828 |
565 |
81 |
0 |
0 |
| ODI |
2 |
118 |
58 |
414 |
782 |
461 |
14 |
1 |
| CDI |
0 |
31 |
20 |
284 |
783 |
2013 |
1262 |
23 |
| VCDI |
0 |
10 |
8 |
99 |
602 |
4879 |
30074 |
60834 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69796 |
16933 |
424 |
349 |
45 |
1 |
0 |
0 |
| OW |
26 |
1133 |
297 |
689 |
174 |
33 |
0 |
0 |
| VODI |
5 |
486 |
180 |
806 |
571 |
116 |
0 |
0 |
| ODI |
2 |
113 |
53 |
425 |
744 |
468 |
21 |
0 |
| CDI |
0 |
30 |
23 |
263 |
807 |
2001 |
1311 |
27 |
| VCDI |
0 |
8 |
7 |
101 |
580 |
4846 |
30018 |
60831 |
|
Date: 2025-01-27:
| 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 |
68151 |
18346 |
391 |
321 |
50 |
21 |
0 |
0 |
| OW |
0 |
1542 |
454 |
781 |
145 |
24 |
0 |
0 |
| VODI |
0 |
167 |
118 |
1264 |
551 |
58 |
0 |
0 |
| ODI |
0 |
16 |
10 |
308 |
987 |
266 |
2 |
9 |
| CDI |
0 |
2 |
0 |
135 |
858 |
2222 |
326 |
38 |
| VCDI |
0 |
5 |
0 |
14 |
418 |
6204 |
31902 |
58637 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68151 |
17859 |
395 |
376 |
72 |
24 |
0 |
0 |
| OW |
0 |
1388 |
260 |
674 |
167 |
57 |
0 |
0 |
| VODI |
0 |
627 |
192 |
875 |
511 |
171 |
0 |
0 |
| ODI |
0 |
147 |
83 |
449 |
639 |
434 |
22 |
0 |
| CDI |
0 |
49 |
42 |
312 |
874 |
1576 |
658 |
13 |
| VCDI |
0 |
8 |
1 |
137 |
746 |
6533 |
31550 |
58671 |
|
Date: 2025-01-29:
| 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 |
69805 |
16777 |
328 |
276 |
39 |
9 |
0 |
0 |
| OW |
14 |
1610 |
319 |
661 |
151 |
21 |
0 |
0 |
| VODI |
0 |
475 |
235 |
1051 |
425 |
70 |
0 |
0 |
| ODI |
0 |
57 |
38 |
460 |
669 |
277 |
23 |
0 |
| CDI |
0 |
17 |
10 |
209 |
864 |
1250 |
488 |
27 |
| VCDI |
0 |
7 |
9 |
78 |
586 |
5570 |
29356 |
62482 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69796 |
16011 |
245 |
275 |
86 |
13 |
0 |
0 |
| OW |
17 |
1538 |
221 |
545 |
167 |
42 |
0 |
0 |
| VODI |
6 |
992 |
231 |
775 |
456 |
177 |
1 |
0 |
| ODI |
0 |
283 |
141 |
483 |
499 |
445 |
67 |
1 |
| CDI |
0 |
92 |
74 |
450 |
764 |
958 |
669 |
23 |
| VCDI |
0 |
27 |
27 |
207 |
762 |
5562 |
29130 |
62485 |
|
Date: 2025-01-31:
| 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 |
69918 |
16693 |
284 |
269 |
28 |
0 |
0 |
0 |
| OW |
15 |
1718 |
320 |
590 |
149 |
1 |
0 |
0 |
| VODI |
1 |
726 |
283 |
1046 |
335 |
21 |
0 |
0 |
| ODI |
0 |
112 |
97 |
599 |
683 |
117 |
4 |
0 |
| CDI |
0 |
8 |
43 |
486 |
1157 |
902 |
271 |
14 |
| VCDI |
0 |
5 |
2 |
163 |
1103 |
5991 |
23449 |
67140 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69902 |
15395 |
233 |
306 |
50 |
0 |
0 |
0 |
| OW |
14 |
1830 |
248 |
503 |
138 |
0 |
0 |
0 |
| VODI |
18 |
1370 |
234 |
754 |
322 |
45 |
0 |
0 |
| ODI |
0 |
460 |
145 |
681 |
516 |
177 |
8 |
0 |
| CDI |
0 |
176 |
130 |
541 |
1162 |
820 |
423 |
4 |
| VCDI |
0 |
31 |
39 |
368 |
1267 |
5990 |
23293 |
67150 |
|
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