Validation of sea ice concentration - European sector
Bulletin date: 2025-03-20
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-03-14:
| 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 |
58329 |
13776 |
213 |
339 |
124 |
25 |
0 |
0 |
| OW |
658 |
1387 |
220 |
322 |
208 |
71 |
2 |
0 |
| VODI |
1829 |
359 |
211 |
473 |
553 |
263 |
33 |
0 |
| ODI |
1767 |
71 |
54 |
273 |
589 |
455 |
64 |
0 |
| CDI |
0 |
54 |
14 |
110 |
697 |
2234 |
1255 |
0 |
| VCDI |
0 |
57 |
34 |
136 |
181 |
4824 |
8032 |
2566 |
|
...date precedes bulletin
|
Date: 2025-03-16:
| 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 |
58405 |
13638 |
151 |
202 |
71 |
13 |
0 |
0 |
| OW |
648 |
1600 |
241 |
306 |
184 |
55 |
12 |
0 |
| VODI |
1816 |
467 |
222 |
462 |
413 |
175 |
2 |
0 |
| ODI |
1784 |
70 |
75 |
299 |
510 |
299 |
28 |
0 |
| CDI |
0 |
35 |
19 |
173 |
767 |
1918 |
846 |
0 |
| VCDI |
0 |
26 |
12 |
85 |
335 |
5370 |
8521 |
2607 |
|
...date precedes bulletin
|
Date: 2025-03-18:
| 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 |
58795 |
13563 |
139 |
158 |
99 |
4 |
1 |
0 |
| OW |
638 |
1389 |
259 |
371 |
193 |
63 |
14 |
0 |
| VODI |
1824 |
251 |
203 |
547 |
547 |
117 |
8 |
0 |
| ODI |
1775 |
32 |
55 |
278 |
772 |
450 |
12 |
0 |
| CDI |
0 |
28 |
14 |
118 |
901 |
2881 |
573 |
0 |
| VCDI |
0 |
20 |
10 |
35 |
310 |
4922 |
9120 |
1373 |
|
...date precedes bulletin
|
Date: 2025-03-20:
| 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 |
57873 |
14106 |
184 |
177 |
79 |
1 |
1 |
0 |
| OW |
611 |
1107 |
267 |
489 |
211 |
55 |
26 |
0 |
| VODI |
1817 |
270 |
173 |
482 |
593 |
158 |
5 |
0 |
| ODI |
1785 |
59 |
44 |
216 |
712 |
578 |
15 |
0 |
| CDI |
0 |
22 |
17 |
95 |
849 |
3036 |
1122 |
0 |
| VCDI |
0 |
11 |
14 |
47 |
332 |
4739 |
8389 |
2095 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
57873 |
14140 |
199 |
184 |
76 |
1 |
1 |
0 |
| OW |
613 |
1084 |
254 |
492 |
210 |
54 |
26 |
0 |
| VODI |
1816 |
262 |
173 |
477 |
612 |
166 |
5 |
0 |
| ODI |
1784 |
61 |
39 |
213 |
703 |
576 |
18 |
0 |
| CDI |
0 |
20 |
25 |
95 |
873 |
3113 |
1089 |
0 |
| VCDI |
0 |
8 |
9 |
45 |
302 |
4657 |
8419 |
2095 |
|
Date: 2025-03-22:
| 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 |
58759 |
13268 |
172 |
161 |
13 |
8 |
0 |
0 |
| OW |
630 |
1299 |
230 |
437 |
165 |
46 |
7 |
0 |
| VODI |
1808 |
413 |
180 |
491 |
521 |
145 |
14 |
0 |
| ODI |
1795 |
143 |
61 |
290 |
503 |
484 |
55 |
0 |
| CDI |
0 |
169 |
54 |
263 |
781 |
2277 |
1704 |
0 |
| VCDI |
0 |
28 |
22 |
115 |
300 |
4049 |
8067 |
2935 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58759 |
13318 |
192 |
169 |
23 |
10 |
0 |
0 |
| OW |
631 |
1267 |
224 |
442 |
163 |
47 |
5 |
0 |
| VODI |
1810 |
404 |
167 |
485 |
554 |
146 |
17 |
0 |
| ODI |
1792 |
143 |
65 |
290 |
482 |
509 |
66 |
0 |
| CDI |
0 |
153 |
46 |
251 |
768 |
2315 |
1648 |
0 |
| VCDI |
0 |
35 |
25 |
120 |
293 |
3982 |
8111 |
2935 |
|
Date: 2025-03-24:
| 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 |
59588 |
13541 |
89 |
111 |
51 |
0 |
0 |
0 |
| OW |
614 |
1470 |
248 |
276 |
137 |
34 |
4 |
0 |
| VODI |
1824 |
302 |
242 |
536 |
427 |
93 |
6 |
0 |
| ODI |
1775 |
23 |
32 |
219 |
822 |
425 |
25 |
0 |
| CDI |
0 |
3 |
12 |
81 |
699 |
2541 |
469 |
0 |
| VCDI |
0 |
0 |
2 |
28 |
184 |
4301 |
9132 |
2496 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59588 |
13205 |
80 |
117 |
51 |
1 |
0 |
0 |
| OW |
611 |
1482 |
201 |
219 |
149 |
25 |
1 |
0 |
| VODI |
1810 |
466 |
206 |
425 |
360 |
130 |
13 |
0 |
| ODI |
1792 |
129 |
91 |
244 |
525 |
304 |
26 |
0 |
| CDI |
0 |
47 |
27 |
180 |
919 |
2229 |
856 |
0 |
| VCDI |
0 |
10 |
20 |
66 |
316 |
4705 |
8740 |
2496 |
|
Date: 2025-03-26:
| 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 |
58892 |
14154 |
158 |
117 |
59 |
6 |
0 |
0 |
| OW |
616 |
1171 |
259 |
378 |
134 |
29 |
9 |
0 |
| VODI |
1821 |
270 |
203 |
497 |
405 |
122 |
10 |
0 |
| ODI |
1779 |
24 |
45 |
310 |
668 |
422 |
51 |
0 |
| CDI |
0 |
19 |
9 |
100 |
706 |
2275 |
506 |
0 |
| VCDI |
0 |
3 |
6 |
37 |
289 |
4398 |
9359 |
2546 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58892 |
13805 |
157 |
148 |
59 |
7 |
0 |
0 |
| OW |
616 |
1195 |
171 |
350 |
162 |
33 |
7 |
0 |
| VODI |
1816 |
483 |
220 |
325 |
334 |
169 |
13 |
0 |
| ODI |
1784 |
95 |
81 |
299 |
526 |
314 |
51 |
0 |
| CDI |
0 |
54 |
37 |
259 |
847 |
2546 |
684 |
0 |
| VCDI |
0 |
9 |
14 |
58 |
333 |
4183 |
9180 |
2546 |
|
Date: 2025-03-28:
| 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 |
59797 |
13130 |
163 |
98 |
49 |
8 |
4 |
0 |
| OW |
615 |
1152 |
282 |
416 |
163 |
22 |
16 |
0 |
| VODI |
1829 |
191 |
175 |
552 |
392 |
134 |
7 |
0 |
| ODI |
1767 |
32 |
40 |
287 |
623 |
425 |
69 |
0 |
| CDI |
0 |
15 |
28 |
110 |
544 |
2287 |
821 |
0 |
| VCDI |
0 |
2 |
5 |
38 |
217 |
3458 |
9212 |
3687 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59797 |
12777 |
168 |
154 |
54 |
7 |
4 |
0 |
| OW |
612 |
1131 |
207 |
381 |
189 |
41 |
9 |
0 |
| VODI |
1824 |
444 |
162 |
324 |
354 |
187 |
27 |
0 |
| ODI |
1775 |
125 |
81 |
276 |
427 |
348 |
47 |
0 |
| CDI |
0 |
41 |
73 |
331 |
783 |
2350 |
1136 |
0 |
| VCDI |
0 |
4 |
2 |
35 |
181 |
3401 |
8906 |
3687 |
|
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