Validation of sea ice concentration - Asian sector
Bulletin date: 2025-06-12
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-06-06:
| 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 |
158 |
1213 |
22 |
35 |
0 |
0 |
0 |
0 |
| OW |
0 |
1318 |
136 |
346 |
42 |
7 |
0 |
0 |
| VODI |
0 |
204 |
191 |
892 |
334 |
40 |
11 |
0 |
| ODI |
0 |
7 |
5 |
423 |
1498 |
301 |
137 |
4 |
| CDI |
0 |
0 |
0 |
50 |
1353 |
4069 |
1269 |
52 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
941 |
7700 |
10332 |
|
...date precedes bulletin
|
Date: 2025-06-08:
| 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 |
282 |
1133 |
13 |
20 |
0 |
0 |
0 |
0 |
| OW |
0 |
1474 |
173 |
184 |
28 |
4 |
0 |
0 |
| VODI |
0 |
330 |
239 |
959 |
306 |
47 |
5 |
0 |
| ODI |
0 |
19 |
10 |
589 |
1778 |
193 |
153 |
4 |
| CDI |
0 |
0 |
0 |
71 |
1555 |
3706 |
1349 |
64 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
1416 |
7451 |
9520 |
|
...date precedes bulletin
|
Date: 2025-06-10:
| 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 |
351 |
1839 |
13 |
13 |
1 |
1 |
0 |
0 |
| OW |
17 |
1184 |
401 |
223 |
49 |
2 |
0 |
0 |
| VODI |
13 |
78 |
63 |
1439 |
355 |
10 |
2 |
0 |
| ODI |
1 |
10 |
1 |
199 |
2117 |
313 |
17 |
0 |
| CDI |
0 |
0 |
0 |
38 |
842 |
4539 |
1824 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
92 |
507 |
6825 |
9717 |
|
...date precedes bulletin
|
Date: 2025-06-12:
| 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 |
405 |
2065 |
28 |
12 |
1 |
1 |
1 |
0 |
| OW |
12 |
1053 |
333 |
319 |
34 |
2 |
0 |
0 |
| VODI |
12 |
126 |
141 |
1254 |
461 |
22 |
5 |
0 |
| ODI |
0 |
7 |
6 |
343 |
1644 |
426 |
45 |
0 |
| CDI |
0 |
0 |
0 |
28 |
1095 |
4134 |
2693 |
58 |
| VCDI |
0 |
0 |
0 |
0 |
224 |
979 |
5327 |
9800 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
411 |
2100 |
46 |
28 |
5 |
1 |
1 |
0 |
| OW |
13 |
1027 |
319 |
291 |
51 |
2 |
0 |
0 |
| VODI |
5 |
118 |
139 |
1223 |
459 |
25 |
2 |
0 |
| ODI |
0 |
6 |
4 |
386 |
1626 |
328 |
26 |
0 |
| CDI |
0 |
0 |
0 |
28 |
1091 |
4188 |
2373 |
26 |
| VCDI |
0 |
0 |
0 |
0 |
227 |
1020 |
5669 |
9832 |
|
Date: 2025-06-14:
| 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 |
369 |
2142 |
41 |
44 |
8 |
2 |
0 |
0 |
| OW |
0 |
1137 |
255 |
291 |
32 |
0 |
0 |
0 |
| VODI |
0 |
150 |
189 |
1254 |
484 |
36 |
8 |
0 |
| ODI |
0 |
5 |
7 |
423 |
1534 |
415 |
64 |
0 |
| CDI |
0 |
1 |
1 |
47 |
1183 |
3721 |
2185 |
32 |
| VCDI |
0 |
0 |
0 |
0 |
468 |
1347 |
6996 |
8225 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
369 |
2213 |
60 |
64 |
13 |
2 |
0 |
0 |
| OW |
0 |
1073 |
251 |
303 |
33 |
0 |
0 |
0 |
| VODI |
0 |
145 |
176 |
1196 |
469 |
29 |
7 |
0 |
| ODI |
0 |
4 |
5 |
455 |
1622 |
384 |
47 |
0 |
| CDI |
0 |
0 |
1 |
41 |
1074 |
3617 |
1992 |
82 |
| VCDI |
0 |
0 |
0 |
0 |
498 |
1489 |
7207 |
8175 |
|
Date: 2025-06-16:
| 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 |
373 |
2651 |
37 |
38 |
21 |
2 |
0 |
0 |
| OW |
0 |
944 |
412 |
255 |
6 |
0 |
0 |
0 |
| VODI |
0 |
21 |
31 |
1643 |
329 |
3 |
3 |
0 |
| ODI |
0 |
1 |
0 |
153 |
2121 |
176 |
15 |
0 |
| CDI |
0 |
0 |
0 |
3 |
885 |
3537 |
315 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
105 |
1258 |
8726 |
9032 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
373 |
2350 |
57 |
48 |
19 |
2 |
0 |
0 |
| OW |
0 |
1085 |
242 |
310 |
27 |
0 |
0 |
0 |
| VODI |
0 |
177 |
175 |
1185 |
526 |
23 |
3 |
0 |
| ODI |
0 |
5 |
6 |
490 |
1568 |
456 |
90 |
0 |
| CDI |
0 |
0 |
0 |
58 |
948 |
2843 |
2933 |
130 |
| VCDI |
0 |
0 |
0 |
1 |
379 |
1652 |
6033 |
8902 |
|
Date: 2025-06-18:
| 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 |
377 |
2763 |
55 |
36 |
16 |
0 |
0 |
0 |
| OW |
0 |
1088 |
295 |
347 |
4 |
0 |
0 |
0 |
| VODI |
0 |
98 |
139 |
1500 |
480 |
7 |
1 |
0 |
| ODI |
0 |
2 |
0 |
186 |
1879 |
154 |
3 |
0 |
| CDI |
0 |
0 |
0 |
18 |
1474 |
3133 |
298 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
20 |
2777 |
7280 |
8666 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
377 |
2448 |
60 |
47 |
16 |
0 |
0 |
0 |
| OW |
0 |
1171 |
216 |
345 |
24 |
0 |
0 |
0 |
| VODI |
0 |
322 |
187 |
1084 |
563 |
33 |
1 |
0 |
| ODI |
0 |
10 |
26 |
537 |
1554 |
419 |
94 |
0 |
| CDI |
0 |
0 |
0 |
74 |
1159 |
3000 |
3190 |
572 |
| VCDI |
0 |
0 |
0 |
0 |
557 |
2619 |
4297 |
8094 |
|
Date: 2025-06-20:
| 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 |
686 |
2514 |
32 |
49 |
17 |
0 |
0 |
0 |
| OW |
9 |
1313 |
276 |
238 |
5 |
0 |
0 |
0 |
| VODI |
0 |
317 |
286 |
1351 |
378 |
31 |
0 |
0 |
| ODI |
0 |
8 |
22 |
419 |
1361 |
272 |
3 |
0 |
| CDI |
0 |
1 |
4 |
99 |
1318 |
3589 |
826 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
86 |
2819 |
7104 |
7661 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
690 |
2228 |
33 |
53 |
18 |
0 |
0 |
0 |
| OW |
5 |
1383 |
234 |
256 |
8 |
5 |
0 |
0 |
| VODI |
0 |
467 |
274 |
1102 |
500 |
39 |
0 |
0 |
| ODI |
0 |
75 |
72 |
570 |
1241 |
456 |
93 |
0 |
| CDI |
0 |
0 |
7 |
146 |
1099 |
3544 |
2768 |
503 |
| VCDI |
0 |
0 |
0 |
29 |
299 |
2667 |
5072 |
7160 |
|
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