Validation of sea ice concentration - European sector
Bulletin date: 2025-03-27
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-03-21:
| 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 |
58223 |
13619 |
225 |
197 |
60 |
6 |
1 |
0 |
| OW |
613 |
1127 |
224 |
488 |
220 |
65 |
8 |
0 |
| VODI |
1810 |
321 |
157 |
529 |
635 |
130 |
16 |
0 |
| ODI |
1792 |
73 |
56 |
242 |
707 |
468 |
22 |
0 |
| CDI |
0 |
41 |
26 |
119 |
1016 |
2860 |
1395 |
0 |
| VCDI |
0 |
13 |
12 |
53 |
411 |
4218 |
8339 |
2325 |
|
...date precedes bulletin
|
Date: 2025-03-23:
| 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 |
58927 |
13482 |
126 |
150 |
26 |
1 |
0 |
0 |
| OW |
616 |
1396 |
280 |
332 |
150 |
29 |
1 |
0 |
| VODI |
1808 |
401 |
168 |
517 |
403 |
121 |
14 |
0 |
| ODI |
1795 |
112 |
88 |
245 |
595 |
335 |
47 |
0 |
| CDI |
0 |
36 |
41 |
283 |
1024 |
1735 |
1369 |
0 |
| VCDI |
0 |
9 |
10 |
89 |
338 |
4386 |
7824 |
3553 |
|
...date precedes bulletin
|
Date: 2025-03-25:
| 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 |
59815 |
13356 |
104 |
106 |
48 |
3 |
0 |
0 |
| OW |
609 |
1330 |
239 |
327 |
115 |
38 |
6 |
0 |
| VODI |
1819 |
256 |
195 |
527 |
404 |
116 |
3 |
0 |
| ODI |
1781 |
38 |
38 |
237 |
719 |
472 |
33 |
0 |
| CDI |
0 |
12 |
12 |
97 |
664 |
2353 |
427 |
0 |
| VCDI |
0 |
3 |
5 |
45 |
244 |
4336 |
8841 |
3089 |
|
...date precedes bulletin
|
Date: 2025-03-27:
| 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 |
59680 |
13357 |
141 |
92 |
53 |
4 |
3 |
0 |
| OW |
713 |
1082 |
247 |
418 |
115 |
24 |
13 |
0 |
| VODI |
1837 |
226 |
217 |
494 |
404 |
118 |
9 |
0 |
| ODI |
1772 |
31 |
34 |
344 |
623 |
412 |
64 |
0 |
| CDI |
0 |
16 |
11 |
115 |
712 |
2151 |
792 |
0 |
| VCDI |
0 |
2 |
4 |
34 |
291 |
3851 |
8888 |
3468 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59677 |
13467 |
146 |
100 |
57 |
4 |
3 |
0 |
| OW |
711 |
990 |
273 |
421 |
109 |
27 |
13 |
0 |
| VODI |
1845 |
210 |
190 |
520 |
439 |
119 |
12 |
0 |
| ODI |
1769 |
30 |
26 |
317 |
640 |
421 |
69 |
0 |
| CDI |
0 |
13 |
12 |
95 |
647 |
2152 |
777 |
0 |
| VCDI |
0 |
4 |
7 |
44 |
306 |
3837 |
8895 |
3468 |
|
Date: 2025-03-29:
| 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 |
59762 |
13080 |
140 |
113 |
56 |
7 |
0 |
0 |
| OW |
700 |
1082 |
269 |
382 |
186 |
41 |
23 |
0 |
| VODI |
1836 |
181 |
155 |
540 |
399 |
175 |
6 |
0 |
| ODI |
1766 |
27 |
32 |
246 |
600 |
496 |
64 |
0 |
| CDI |
0 |
10 |
20 |
112 |
507 |
2226 |
1078 |
0 |
| VCDI |
0 |
0 |
7 |
19 |
210 |
3086 |
9131 |
4092 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59763 |
13221 |
143 |
121 |
61 |
8 |
0 |
0 |
| OW |
700 |
951 |
274 |
400 |
176 |
48 |
23 |
0 |
| VODI |
1838 |
174 |
149 |
530 |
431 |
167 |
8 |
0 |
| ODI |
1763 |
21 |
33 |
232 |
613 |
556 |
64 |
0 |
| CDI |
0 |
10 |
15 |
98 |
436 |
2153 |
1123 |
0 |
| VCDI |
0 |
3 |
9 |
31 |
241 |
3099 |
9084 |
4092 |
|
Date: 2025-03-31:
| 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 |
59124 |
13785 |
175 |
162 |
52 |
13 |
7 |
0 |
| OW |
667 |
884 |
261 |
450 |
149 |
32 |
18 |
0 |
| VODI |
1849 |
102 |
125 |
485 |
579 |
180 |
4 |
0 |
| ODI |
1740 |
7 |
18 |
122 |
611 |
566 |
46 |
0 |
| CDI |
0 |
1 |
0 |
28 |
362 |
2683 |
867 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
143 |
2455 |
9978 |
4129 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59134 |
13608 |
135 |
126 |
63 |
15 |
2 |
0 |
| OW |
652 |
967 |
286 |
458 |
159 |
34 |
17 |
0 |
| VODI |
1838 |
172 |
113 |
442 |
471 |
197 |
16 |
0 |
| ODI |
1756 |
29 |
37 |
147 |
520 |
630 |
91 |
0 |
| CDI |
0 |
3 |
8 |
69 |
418 |
2066 |
1238 |
0 |
| VCDI |
0 |
0 |
0 |
8 |
265 |
2987 |
9556 |
4129 |
|
Date: 2025-04-02:
| 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 |
59093 |
13756 |
140 |
154 |
83 |
19 |
4 |
0 |
| OW |
637 |
974 |
266 |
377 |
151 |
61 |
34 |
0 |
| VODI |
1843 |
244 |
125 |
424 |
479 |
147 |
31 |
0 |
| ODI |
1745 |
43 |
36 |
121 |
515 |
396 |
89 |
0 |
| CDI |
0 |
11 |
21 |
83 |
349 |
1800 |
1072 |
0 |
| VCDI |
0 |
0 |
2 |
27 |
160 |
2659 |
9894 |
4797 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59098 |
13278 |
170 |
193 |
112 |
29 |
6 |
0 |
| OW |
631 |
1154 |
183 |
352 |
170 |
86 |
29 |
0 |
| VODI |
1834 |
411 |
145 |
327 |
442 |
231 |
51 |
0 |
| ODI |
1755 |
120 |
46 |
173 |
489 |
457 |
150 |
0 |
| CDI |
0 |
61 |
36 |
88 |
373 |
1727 |
1468 |
0 |
| VCDI |
0 |
4 |
10 |
53 |
151 |
2552 |
9420 |
4797 |
|
Date: 2025-04-04:
| 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 |
58948 |
13480 |
215 |
124 |
59 |
18 |
2 |
0 |
| OW |
632 |
857 |
291 |
451 |
138 |
69 |
10 |
0 |
| VODI |
1843 |
218 |
115 |
453 |
504 |
152 |
16 |
0 |
| ODI |
1745 |
68 |
28 |
138 |
442 |
469 |
63 |
0 |
| CDI |
0 |
53 |
43 |
132 |
609 |
2053 |
900 |
0 |
| VCDI |
0 |
11 |
7 |
41 |
256 |
3531 |
8649 |
5029 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58948 |
12693 |
323 |
377 |
145 |
49 |
2 |
0 |
| OW |
629 |
1155 |
129 |
319 |
291 |
117 |
13 |
0 |
| VODI |
1835 |
507 |
116 |
226 |
421 |
300 |
76 |
0 |
| ODI |
1756 |
157 |
58 |
173 |
374 |
555 |
116 |
0 |
| CDI |
0 |
132 |
60 |
202 |
541 |
1931 |
1451 |
0 |
| VCDI |
0 |
43 |
13 |
42 |
236 |
3340 |
7982 |
5029 |
|
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