Validation of sea ice concentration - Full domain
Bulletin date: 2025-06-19
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-06-13:
| 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 |
67305 |
15917 |
165 |
88 |
9 |
0 |
1 |
0 |
| OW |
947 |
4486 |
737 |
817 |
142 |
20 |
1 |
0 |
| VODI |
3477 |
1370 |
851 |
3163 |
1525 |
179 |
36 |
0 |
| ODI |
0 |
184 |
175 |
1176 |
3046 |
1534 |
267 |
0 |
| CDI |
0 |
149 |
84 |
410 |
2467 |
8897 |
5496 |
18 |
| VCDI |
0 |
3 |
6 |
45 |
1752 |
10365 |
26624 |
16876 |
|
...date precedes bulletin
|
Date: 2025-06-15:
| 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 |
68901 |
14492 |
157 |
78 |
17 |
0 |
1 |
0 |
| OW |
1068 |
4703 |
818 |
893 |
158 |
13 |
1 |
0 |
| VODI |
3318 |
1705 |
882 |
2981 |
1529 |
221 |
44 |
0 |
| ODI |
2 |
309 |
205 |
1362 |
2785 |
1462 |
299 |
2 |
| CDI |
0 |
179 |
89 |
499 |
2488 |
8103 |
5828 |
3 |
| VCDI |
0 |
0 |
5 |
30 |
3499 |
13660 |
26611 |
11410 |
|
...date precedes bulletin
|
Date: 2025-06-17:
| 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 |
69097 |
16610 |
217 |
132 |
11 |
2 |
1 |
0 |
| OW |
1055 |
4896 |
985 |
878 |
57 |
5 |
0 |
0 |
| VODI |
3297 |
931 |
876 |
3355 |
1299 |
69 |
8 |
0 |
| ODI |
0 |
75 |
88 |
1064 |
3110 |
1193 |
66 |
0 |
| CDI |
0 |
19 |
31 |
262 |
2643 |
8806 |
2605 |
27 |
| VCDI |
0 |
0 |
0 |
1 |
2080 |
9995 |
29608 |
15356 |
|
...date precedes bulletin
|
Date: 2025-06-19:
| 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 |
70507 |
15930 |
108 |
65 |
2 |
0 |
0 |
0 |
| OW |
1180 |
5366 |
753 |
646 |
72 |
4 |
0 |
0 |
| VODI |
3280 |
1692 |
942 |
2766 |
1187 |
97 |
13 |
0 |
| ODI |
0 |
133 |
169 |
1091 |
2904 |
1384 |
144 |
0 |
| CDI |
0 |
49 |
57 |
429 |
2837 |
7496 |
3239 |
0 |
| VCDI |
0 |
0 |
3 |
37 |
1847 |
13010 |
32319 |
9052 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70419 |
16507 |
131 |
68 |
3 |
0 |
0 |
0 |
| OW |
1268 |
4832 |
733 |
670 |
88 |
5 |
1 |
0 |
| VODI |
3280 |
1632 |
920 |
2688 |
1169 |
111 |
13 |
0 |
| ODI |
0 |
159 |
183 |
1101 |
2817 |
1175 |
144 |
0 |
| CDI |
0 |
39 |
60 |
458 |
2873 |
7649 |
3342 |
0 |
| VCDI |
0 |
1 |
5 |
49 |
1899 |
13051 |
32215 |
9052 |
|
Date: 2025-06-21:
| 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 |
71086 |
15792 |
110 |
60 |
5 |
2 |
0 |
0 |
| OW |
1260 |
5307 |
775 |
664 |
65 |
4 |
1 |
0 |
| VODI |
3273 |
2089 |
881 |
2497 |
1140 |
138 |
26 |
0 |
| ODI |
0 |
307 |
254 |
1203 |
3166 |
1115 |
139 |
0 |
| CDI |
0 |
72 |
86 |
636 |
3407 |
7247 |
3055 |
8 |
| VCDI |
0 |
8 |
4 |
37 |
3052 |
14648 |
28585 |
8606 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71006 |
16193 |
163 |
84 |
6 |
2 |
0 |
0 |
| OW |
1334 |
4962 |
727 |
689 |
83 |
15 |
1 |
0 |
| VODI |
3279 |
1999 |
841 |
2326 |
1156 |
144 |
26 |
0 |
| ODI |
0 |
328 |
277 |
1234 |
2815 |
1124 |
162 |
0 |
| CDI |
0 |
85 |
98 |
723 |
3631 |
7194 |
3225 |
42 |
| VCDI |
0 |
8 |
4 |
41 |
3144 |
14675 |
28392 |
8572 |
|
Date: 2025-06-23:
| 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 |
73282 |
16562 |
164 |
61 |
4 |
0 |
0 |
0 |
| OW |
1253 |
4996 |
919 |
686 |
39 |
3 |
1 |
0 |
| VODI |
3235 |
718 |
842 |
3006 |
1312 |
93 |
15 |
0 |
| ODI |
0 |
39 |
66 |
976 |
4150 |
2085 |
86 |
0 |
| CDI |
0 |
35 |
37 |
262 |
2574 |
13660 |
1881 |
0 |
| VCDI |
0 |
0 |
1 |
54 |
2120 |
12748 |
23781 |
9064 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72911 |
14938 |
175 |
80 |
6 |
1 |
0 |
0 |
| OW |
1582 |
4969 |
626 |
738 |
85 |
7 |
3 |
0 |
| VODI |
3277 |
2042 |
827 |
2100 |
1095 |
209 |
42 |
0 |
| ODI |
0 |
300 |
284 |
1230 |
2601 |
1566 |
168 |
0 |
| CDI |
0 |
91 |
107 |
811 |
3735 |
9459 |
3199 |
138 |
| VCDI |
0 |
10 |
10 |
86 |
2677 |
17347 |
22352 |
8926 |
|
Date: 2025-06-25:
| 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 |
74405 |
16455 |
120 |
47 |
6 |
2 |
0 |
0 |
| OW |
1292 |
4912 |
796 |
690 |
64 |
4 |
0 |
0 |
| VODI |
3227 |
935 |
784 |
2820 |
1206 |
239 |
18 |
0 |
| ODI |
0 |
87 |
107 |
1133 |
4045 |
1526 |
101 |
0 |
| CDI |
0 |
38 |
60 |
450 |
2861 |
13485 |
3275 |
0 |
| VCDI |
0 |
0 |
1 |
8 |
4632 |
15148 |
23367 |
2464 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74204 |
14429 |
163 |
104 |
14 |
3 |
0 |
0 |
| OW |
1472 |
5220 |
580 |
736 |
104 |
5 |
0 |
0 |
| VODI |
3248 |
2233 |
705 |
1950 |
1167 |
200 |
40 |
0 |
| ODI |
0 |
371 |
258 |
1343 |
2762 |
1278 |
257 |
0 |
| CDI |
0 |
170 |
140 |
933 |
3739 |
11299 |
7572 |
114 |
| VCDI |
0 |
4 |
22 |
82 |
5028 |
17619 |
18892 |
2350 |
|
Date: 2025-06-27:
| 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 |
74763 |
17082 |
141 |
120 |
19 |
1 |
0 |
0 |
| OW |
1223 |
5242 |
643 |
594 |
69 |
13 |
1 |
0 |
| VODI |
3192 |
1410 |
854 |
2417 |
1143 |
195 |
34 |
0 |
| ODI |
0 |
160 |
184 |
1989 |
3028 |
1297 |
125 |
0 |
| CDI |
0 |
64 |
74 |
693 |
3745 |
13062 |
2964 |
1 |
| VCDI |
0 |
0 |
1 |
45 |
1587 |
19679 |
19800 |
3156 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74536 |
14553 |
153 |
131 |
17 |
1 |
0 |
0 |
| OW |
1419 |
5865 |
465 |
534 |
112 |
16 |
3 |
0 |
| VODI |
3223 |
2749 |
714 |
1672 |
818 |
181 |
77 |
0 |
| ODI |
0 |
557 |
357 |
2070 |
2399 |
960 |
308 |
0 |
| CDI |
0 |
217 |
194 |
1307 |
4022 |
11627 |
9354 |
2 |
| VCDI |
0 |
17 |
14 |
144 |
2223 |
21462 |
13182 |
3155 |
|
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