Validation of sea ice concentration - Full domain
Bulletin date: 2025-02-20
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-02-14:
| 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 |
58695 |
15428 |
153 |
146 |
23 |
2 |
0 |
0 |
| OW |
607 |
1337 |
263 |
382 |
157 |
16 |
0 |
0 |
| VODI |
1770 |
483 |
213 |
534 |
434 |
138 |
0 |
0 |
| ODI |
1938 |
180 |
87 |
296 |
606 |
518 |
37 |
0 |
| CDI |
0 |
104 |
49 |
198 |
778 |
1940 |
881 |
7 |
| VCDI |
0 |
76 |
52 |
171 |
548 |
6828 |
37731 |
47004 |
|
...date precedes bulletin
|
Date: 2025-02-16:
| 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 |
58487 |
15554 |
214 |
173 |
23 |
7 |
0 |
0 |
| OW |
633 |
1378 |
240 |
281 |
112 |
37 |
1 |
0 |
| VODI |
1755 |
621 |
194 |
425 |
346 |
121 |
2 |
0 |
| ODI |
1956 |
258 |
127 |
349 |
473 |
290 |
20 |
1 |
| CDI |
0 |
128 |
69 |
283 |
833 |
1280 |
795 |
45 |
| VCDI |
0 |
59 |
31 |
175 |
757 |
4738 |
33815 |
53724 |
|
...date precedes bulletin
|
Date: 2025-02-18:
| 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 |
59537 |
14825 |
139 |
120 |
18 |
7 |
0 |
0 |
| OW |
660 |
1731 |
184 |
288 |
80 |
1 |
0 |
0 |
| VODI |
1749 |
526 |
257 |
567 |
306 |
58 |
1 |
0 |
| ODI |
1964 |
126 |
73 |
333 |
749 |
335 |
33 |
0 |
| CDI |
0 |
101 |
53 |
176 |
568 |
1295 |
864 |
15 |
| VCDI |
0 |
36 |
27 |
124 |
448 |
4547 |
31762 |
56127 |
|
...date precedes bulletin
|
Date: 2025-02-20:
| 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 |
59647 |
14881 |
103 |
129 |
24 |
0 |
0 |
0 |
| OW |
752 |
1448 |
203 |
260 |
111 |
7 |
0 |
0 |
| VODI |
1846 |
525 |
235 |
427 |
350 |
88 |
0 |
0 |
| ODI |
1742 |
172 |
108 |
298 |
517 |
360 |
37 |
0 |
| CDI |
0 |
116 |
53 |
218 |
539 |
1149 |
1160 |
3 |
| VCDI |
0 |
23 |
51 |
175 |
596 |
4018 |
31769 |
56670 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59637 |
14845 |
106 |
136 |
24 |
0 |
0 |
0 |
| OW |
762 |
1458 |
205 |
257 |
102 |
4 |
0 |
0 |
| VODI |
1847 |
522 |
222 |
417 |
355 |
90 |
1 |
0 |
| ODI |
1741 |
187 |
107 |
275 |
505 |
367 |
41 |
0 |
| CDI |
0 |
123 |
61 |
250 |
547 |
1138 |
1234 |
3 |
| VCDI |
0 |
30 |
52 |
172 |
604 |
4023 |
31690 |
56670 |
|
Date: 2025-02-22:
| 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 |
60176 |
14169 |
155 |
136 |
16 |
1 |
0 |
0 |
| OW |
794 |
1335 |
177 |
276 |
140 |
15 |
7 |
0 |
| VODI |
1839 |
527 |
206 |
354 |
367 |
88 |
24 |
0 |
| ODI |
1750 |
196 |
119 |
314 |
458 |
325 |
58 |
0 |
| CDI |
0 |
105 |
64 |
328 |
603 |
1095 |
849 |
23 |
| VCDI |
0 |
40 |
36 |
183 |
584 |
4436 |
32801 |
55641 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60169 |
14184 |
156 |
133 |
16 |
0 |
0 |
0 |
| OW |
801 |
1290 |
171 |
284 |
126 |
14 |
6 |
0 |
| VODI |
1837 |
544 |
204 |
338 |
363 |
86 |
26 |
0 |
| ODI |
1752 |
191 |
124 |
313 |
436 |
318 |
61 |
0 |
| CDI |
0 |
111 |
61 |
331 |
614 |
1179 |
1012 |
24 |
| VCDI |
0 |
52 |
41 |
192 |
613 |
4363 |
32634 |
55640 |
|
Date: 2025-02-24:
| 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 |
61192 |
13213 |
103 |
76 |
30 |
8 |
0 |
0 |
| OW |
643 |
1559 |
249 |
296 |
108 |
22 |
20 |
0 |
| VODI |
1750 |
456 |
279 |
736 |
371 |
83 |
20 |
0 |
| ODI |
1963 |
92 |
75 |
407 |
667 |
339 |
28 |
1 |
| CDI |
0 |
32 |
35 |
215 |
799 |
2128 |
615 |
32 |
| VCDI |
0 |
30 |
21 |
95 |
444 |
5065 |
33112 |
53401 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
61144 |
12994 |
66 |
67 |
17 |
1 |
0 |
0 |
| OW |
815 |
1321 |
193 |
216 |
128 |
19 |
7 |
0 |
| VODI |
1839 |
583 |
249 |
481 |
245 |
76 |
34 |
0 |
| ODI |
1750 |
218 |
126 |
491 |
461 |
247 |
53 |
0 |
| CDI |
0 |
185 |
76 |
391 |
923 |
1821 |
607 |
22 |
| VCDI |
0 |
81 |
52 |
179 |
645 |
5481 |
33094 |
53412 |
|
Date: 2025-02-26:
| 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 |
60918 |
13334 |
93 |
79 |
21 |
0 |
0 |
0 |
| OW |
745 |
1653 |
262 |
210 |
68 |
27 |
13 |
0 |
| VODI |
1859 |
684 |
272 |
698 |
263 |
105 |
12 |
0 |
| ODI |
1736 |
207 |
89 |
436 |
770 |
209 |
45 |
0 |
| CDI |
0 |
82 |
61 |
275 |
938 |
1469 |
391 |
10 |
| VCDI |
0 |
70 |
53 |
194 |
672 |
5891 |
27576 |
58320 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60812 |
12882 |
72 |
53 |
10 |
0 |
0 |
0 |
| OW |
847 |
1599 |
174 |
177 |
59 |
9 |
4 |
0 |
| VODI |
1843 |
825 |
277 |
455 |
239 |
115 |
43 |
0 |
| ODI |
1756 |
351 |
111 |
525 |
618 |
244 |
53 |
0 |
| CDI |
0 |
211 |
123 |
437 |
1028 |
1322 |
439 |
7 |
| VCDI |
0 |
162 |
73 |
245 |
778 |
6011 |
27498 |
58323 |
|
Date: 2025-02-28:
| 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 |
60598 |
13539 |
122 |
89 |
15 |
5 |
0 |
0 |
| OW |
753 |
1622 |
253 |
290 |
73 |
27 |
0 |
0 |
| VODI |
1861 |
709 |
283 |
639 |
341 |
50 |
1 |
0 |
| ODI |
1740 |
205 |
98 |
395 |
576 |
206 |
12 |
0 |
| CDI |
1 |
116 |
53 |
280 |
912 |
1481 |
325 |
24 |
| VCDI |
0 |
79 |
46 |
251 |
788 |
6149 |
27401 |
58402 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60587 |
12967 |
109 |
97 |
14 |
1 |
0 |
0 |
| OW |
764 |
1687 |
206 |
238 |
59 |
15 |
0 |
0 |
| VODI |
1845 |
891 |
243 |
496 |
326 |
87 |
0 |
0 |
| ODI |
1756 |
368 |
135 |
415 |
504 |
342 |
22 |
0 |
| CDI |
1 |
230 |
103 |
396 |
938 |
1314 |
285 |
3 |
| VCDI |
0 |
127 |
59 |
302 |
864 |
6159 |
27432 |
58423 |
|
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