Validation of sea ice concentration - Full domain
Bulletin date: 2025-01-30
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-24:
| 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 |
62079 |
13653 |
88 |
77 |
25 |
4 |
0 |
0 |
| OW |
825 |
1108 |
263 |
264 |
68 |
24 |
11 |
0 |
| VODI |
1798 |
564 |
137 |
418 |
330 |
92 |
29 |
0 |
| ODI |
1920 |
249 |
78 |
192 |
411 |
413 |
75 |
0 |
| CDI |
0 |
125 |
49 |
204 |
446 |
1260 |
1762 |
1 |
| VCDI |
0 |
36 |
33 |
97 |
545 |
3231 |
33420 |
54406 |
|
...date precedes bulletin
|
Date: 2025-01-26:
| 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 |
59953 |
15408 |
168 |
126 |
26 |
13 |
3 |
0 |
| OW |
686 |
1414 |
169 |
217 |
90 |
33 |
21 |
0 |
| VODI |
1780 |
703 |
182 |
385 |
331 |
104 |
20 |
0 |
| ODI |
1927 |
223 |
104 |
281 |
457 |
317 |
59 |
0 |
| CDI |
0 |
134 |
83 |
231 |
547 |
1399 |
998 |
9 |
| VCDI |
0 |
14 |
33 |
151 |
479 |
4537 |
39611 |
47384 |
|
...date precedes bulletin
|
Date: 2025-01-28:
| 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 |
60427 |
15561 |
143 |
112 |
21 |
9 |
5 |
0 |
| OW |
756 |
1643 |
234 |
272 |
61 |
38 |
27 |
0 |
| VODI |
1778 |
570 |
217 |
548 |
328 |
70 |
23 |
0 |
| ODI |
1929 |
106 |
86 |
271 |
372 |
241 |
58 |
0 |
| CDI |
0 |
32 |
35 |
159 |
507 |
970 |
716 |
10 |
| VCDI |
0 |
8 |
18 |
96 |
404 |
4218 |
36375 |
51356 |
|
...date precedes bulletin
|
Date: 2025-01-30:
| 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 |
62496 |
13750 |
84 |
66 |
21 |
10 |
4 |
0 |
| OW |
681 |
1778 |
180 |
154 |
51 |
31 |
4 |
0 |
| VODI |
1778 |
869 |
288 |
466 |
219 |
41 |
4 |
0 |
| ODI |
1929 |
174 |
136 |
356 |
355 |
136 |
36 |
0 |
| CDI |
0 |
51 |
64 |
330 |
582 |
701 |
550 |
19 |
| VCDI |
0 |
21 |
21 |
140 |
547 |
3874 |
32510 |
55303 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
62491 |
13770 |
78 |
69 |
28 |
17 |
7 |
0 |
| OW |
686 |
1735 |
184 |
148 |
43 |
26 |
0 |
0 |
| VODI |
1778 |
887 |
289 |
471 |
214 |
39 |
4 |
0 |
| ODI |
1929 |
179 |
146 |
366 |
351 |
139 |
52 |
0 |
| CDI |
0 |
47 |
53 |
326 |
611 |
703 |
579 |
22 |
| VCDI |
0 |
25 |
23 |
132 |
528 |
3869 |
32466 |
55300 |
|
Date: 2025-02-01:
| 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 |
62063 |
13794 |
97 |
86 |
39 |
13 |
0 |
0 |
| OW |
662 |
1811 |
181 |
203 |
73 |
22 |
6 |
0 |
| VODI |
1781 |
978 |
231 |
531 |
242 |
69 |
9 |
0 |
| ODI |
1925 |
330 |
100 |
331 |
398 |
161 |
31 |
0 |
| CDI |
0 |
195 |
110 |
354 |
661 |
797 |
386 |
14 |
| VCDI |
0 |
26 |
45 |
279 |
814 |
5314 |
29842 |
55806 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
62062 |
13790 |
99 |
95 |
50 |
13 |
1 |
0 |
| OW |
663 |
1767 |
167 |
182 |
65 |
24 |
5 |
0 |
| VODI |
1781 |
1019 |
242 |
536 |
226 |
68 |
14 |
0 |
| ODI |
1925 |
330 |
98 |
344 |
400 |
145 |
36 |
0 |
| CDI |
0 |
195 |
117 |
350 |
659 |
834 |
426 |
17 |
| VCDI |
0 |
33 |
41 |
277 |
827 |
5292 |
29792 |
55803 |
|
Date: 2025-02-03:
| 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 |
61590 |
14251 |
97 |
61 |
28 |
6 |
0 |
0 |
| OW |
677 |
2407 |
233 |
264 |
102 |
16 |
0 |
0 |
| VODI |
1810 |
682 |
271 |
623 |
364 |
78 |
21 |
0 |
| ODI |
1882 |
205 |
84 |
359 |
673 |
217 |
62 |
0 |
| CDI |
0 |
152 |
81 |
294 |
975 |
1580 |
490 |
10 |
| VCDI |
0 |
24 |
42 |
209 |
754 |
6533 |
37694 |
44909 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
61590 |
13831 |
97 |
65 |
48 |
8 |
0 |
0 |
| OW |
662 |
1728 |
160 |
230 |
89 |
20 |
1 |
0 |
| VODI |
1787 |
1063 |
217 |
425 |
286 |
40 |
44 |
0 |
| ODI |
1920 |
466 |
121 |
338 |
529 |
192 |
86 |
0 |
| CDI |
0 |
434 |
108 |
375 |
753 |
968 |
520 |
0 |
| VCDI |
0 |
199 |
105 |
377 |
1191 |
7202 |
37616 |
44919 |
|
Date: 2025-02-05:
| 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 |
60925 |
14657 |
174 |
219 |
55 |
6 |
7 |
0 |
| OW |
674 |
1940 |
216 |
280 |
71 |
12 |
4 |
0 |
| VODI |
1807 |
797 |
204 |
587 |
508 |
106 |
19 |
0 |
| ODI |
1887 |
277 |
91 |
284 |
561 |
312 |
156 |
0 |
| CDI |
0 |
259 |
101 |
307 |
790 |
1240 |
1027 |
0 |
| VCDI |
0 |
229 |
88 |
302 |
936 |
5562 |
36826 |
46307 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60924 |
13884 |
164 |
221 |
51 |
4 |
5 |
0 |
| OW |
663 |
1592 |
193 |
208 |
118 |
28 |
14 |
0 |
| VODI |
1785 |
1131 |
155 |
501 |
400 |
56 |
49 |
0 |
| ODI |
1921 |
629 |
95 |
291 |
502 |
295 |
127 |
0 |
| CDI |
0 |
489 |
132 |
340 |
665 |
1022 |
1005 |
11 |
| VCDI |
0 |
434 |
135 |
418 |
1185 |
5833 |
36839 |
46296 |
|
Date: 2025-02-07:
| 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 |
61429 |
13367 |
188 |
318 |
142 |
19 |
0 |
3 |
| OW |
649 |
1839 |
182 |
278 |
128 |
23 |
4 |
11 |
| VODI |
1795 |
933 |
254 |
540 |
442 |
168 |
22 |
9 |
| ODI |
1905 |
375 |
100 |
293 |
659 |
493 |
230 |
8 |
| CDI |
0 |
368 |
124 |
341 |
642 |
1230 |
720 |
75 |
| VCDI |
0 |
330 |
110 |
357 |
778 |
6003 |
37870 |
45056 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
61430 |
12599 |
220 |
378 |
138 |
26 |
1 |
4 |
| OW |
642 |
1650 |
98 |
204 |
132 |
44 |
17 |
12 |
| VODI |
1784 |
1170 |
197 |
388 |
403 |
143 |
84 |
10 |
| ODI |
1922 |
642 |
146 |
362 |
616 |
446 |
230 |
9 |
| CDI |
0 |
621 |
156 |
375 |
597 |
1244 |
861 |
109 |
| VCDI |
0 |
530 |
141 |
420 |
905 |
6033 |
37653 |
45018 |
|
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