Validation of sea ice concentration - Asian sector
Bulletin date: 2025-05-29
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-05-23:
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 |
150 |
614 |
6 |
18 |
0 |
0 |
0 |
1 |
OW |
0 |
611 |
161 |
150 |
19 |
4 |
1 |
10 |
VODI |
0 |
216 |
134 |
818 |
153 |
18 |
21 |
53 |
ODI |
0 |
21 |
26 |
402 |
960 |
121 |
97 |
68 |
CDI |
0 |
0 |
1 |
158 |
1280 |
3864 |
2191 |
287 |
VCDI |
0 |
0 |
0 |
0 |
76 |
2030 |
11262 |
7094 |
|
...date precedes bulletin
|
Date: 2025-05-25:
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 |
150 |
551 |
1 |
9 |
1 |
0 |
0 |
0 |
OW |
0 |
482 |
128 |
217 |
15 |
8 |
14 |
1 |
VODI |
0 |
271 |
130 |
757 |
301 |
32 |
48 |
51 |
ODI |
0 |
12 |
36 |
411 |
1269 |
288 |
160 |
87 |
CDI |
0 |
0 |
0 |
126 |
1204 |
4755 |
2200 |
170 |
VCDI |
0 |
0 |
0 |
0 |
99 |
2559 |
10098 |
6455 |
|
...date precedes bulletin
|
Date: 2025-05-27:
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 |
150 |
668 |
9 |
8 |
2 |
2 |
0 |
0 |
OW |
0 |
758 |
211 |
209 |
21 |
8 |
1 |
0 |
VODI |
0 |
35 |
104 |
922 |
184 |
16 |
17 |
2 |
ODI |
0 |
0 |
1 |
294 |
1467 |
205 |
44 |
4 |
CDI |
0 |
0 |
0 |
36 |
1214 |
5289 |
983 |
68 |
VCDI |
0 |
0 |
0 |
0 |
66 |
1208 |
10252 |
8638 |
|
...date precedes bulletin
|
Date: 2025-05-29:
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 |
151 |
828 |
3 |
8 |
1 |
0 |
0 |
0 |
OW |
0 |
817 |
196 |
174 |
16 |
2 |
0 |
0 |
VODI |
0 |
140 |
150 |
861 |
134 |
16 |
8 |
0 |
ODI |
0 |
5 |
14 |
354 |
1357 |
126 |
41 |
0 |
CDI |
0 |
0 |
0 |
104 |
1555 |
4702 |
937 |
0 |
VCDI |
0 |
0 |
0 |
0 |
205 |
2456 |
9129 |
8606 |
|
|
observations |
|
Ice free |
Ice free near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI near MIZ |
VCDI |
m o d e l |
Ice free |
151 |
875 |
8 |
22 |
2 |
2 |
0 |
0 |
OW |
0 |
778 |
192 |
164 |
14 |
0 |
0 |
0 |
VODI |
0 |
127 |
147 |
866 |
180 |
10 |
13 |
0 |
ODI |
0 |
10 |
16 |
328 |
1296 |
144 |
52 |
0 |
CDI |
0 |
0 |
0 |
121 |
1578 |
4453 |
1060 |
0 |
VCDI |
0 |
0 |
0 |
0 |
198 |
2693 |
8990 |
8606 |
|
Date: 2025-05-31:
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 |
151 |
853 |
0 |
12 |
2 |
0 |
0 |
0 |
OW |
0 |
934 |
103 |
141 |
16 |
5 |
6 |
0 |
VODI |
0 |
367 |
204 |
692 |
128 |
54 |
29 |
0 |
ODI |
0 |
71 |
39 |
461 |
1153 |
183 |
127 |
0 |
CDI |
0 |
12 |
9 |
175 |
1438 |
3405 |
1812 |
6 |
VCDI |
0 |
0 |
0 |
0 |
149 |
2159 |
7990 |
10210 |
|
|
observations |
|
Ice free |
Ice free near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI near MIZ |
VCDI |
m o d e l |
Ice free |
151 |
917 |
6 |
32 |
2 |
3 |
0 |
0 |
OW |
0 |
896 |
110 |
136 |
22 |
6 |
5 |
0 |
VODI |
0 |
317 |
188 |
707 |
162 |
48 |
33 |
0 |
ODI |
0 |
86 |
36 |
416 |
1054 |
232 |
128 |
0 |
CDI |
0 |
21 |
15 |
190 |
1502 |
3288 |
1805 |
9 |
VCDI |
0 |
0 |
0 |
0 |
144 |
2229 |
7993 |
10207 |
|
Date: 2025-06-02:
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 |
150 |
980 |
21 |
32 |
6 |
5 |
19 |
0 |
OW |
0 |
860 |
160 |
160 |
45 |
13 |
29 |
0 |
VODI |
0 |
368 |
174 |
644 |
168 |
48 |
71 |
0 |
ODI |
0 |
121 |
41 |
429 |
1016 |
296 |
195 |
5 |
CDI |
0 |
45 |
42 |
296 |
1485 |
3717 |
2096 |
44 |
VCDI |
0 |
0 |
0 |
0 |
169 |
2210 |
7668 |
9268 |
|
|
observations |
|
Ice free |
Ice free near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI near MIZ |
VCDI |
m o d e l |
Ice free |
150 |
954 |
21 |
23 |
2 |
1 |
5 |
0 |
OW |
0 |
882 |
146 |
124 |
29 |
10 |
25 |
0 |
VODI |
0 |
390 |
179 |
674 |
201 |
81 |
61 |
0 |
ODI |
0 |
128 |
54 |
416 |
1074 |
444 |
218 |
6 |
CDI |
0 |
20 |
38 |
324 |
1438 |
3613 |
2019 |
59 |
VCDI |
0 |
0 |
0 |
0 |
145 |
2140 |
7750 |
9252 |
|
Date: 2025-06-04:
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 |
151 |
1109 |
52 |
64 |
5 |
0 |
0 |
0 |
OW |
0 |
1037 |
304 |
407 |
48 |
7 |
4 |
0 |
VODI |
0 |
63 |
130 |
1122 |
271 |
38 |
14 |
0 |
ODI |
0 |
1 |
1 |
236 |
1695 |
274 |
80 |
0 |
CDI |
0 |
0 |
0 |
41 |
900 |
4155 |
1539 |
32 |
VCDI |
0 |
0 |
0 |
0 |
71 |
1853 |
9250 |
8142 |
|
|
observations |
|
Ice free |
Ice free near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI near MIZ |
VCDI |
m o d e l |
Ice free |
151 |
877 |
62 |
72 |
4 |
0 |
0 |
0 |
OW |
0 |
844 |
143 |
247 |
39 |
12 |
7 |
0 |
VODI |
0 |
367 |
177 |
682 |
277 |
95 |
60 |
0 |
ODI |
0 |
107 |
87 |
496 |
1118 |
536 |
349 |
5 |
CDI |
0 |
15 |
18 |
373 |
1448 |
3417 |
3257 |
107 |
VCDI |
0 |
0 |
0 |
0 |
104 |
2267 |
7214 |
8062 |
|
Date: 2025-06-06:
Best estimate |
Forecast |
...observations not yet available
|
...observations not yet available
|
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