Validation of sea ice concentration
Bulletin date: 2023-06-15
Model vs. observations, sea ice class contingency tables
Date: 2023-06-09:
| 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 |
14760 |
6594 |
1771 |
858 |
423 |
96 |
61 |
0 |
| OW |
0 |
13 |
117 |
189 |
208 |
183 |
72 |
0 |
| VODI |
0 |
8 |
97 |
140 |
231 |
410 |
320 |
0 |
| ODI |
0 |
0 |
58 |
98 |
132 |
269 |
579 |
0 |
| CDI |
0 |
0 |
29 |
93 |
115 |
353 |
2012 |
3 |
| VCDI |
0 |
0 |
11 |
34 |
53 |
125 |
4115 |
3529 |
|
...date precedes bulletin
|
Date: 2023-06-13:
| 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 |
15755 |
5977 |
1431 |
1219 |
507 |
37 |
71 |
0 |
| OW |
0 |
4 |
49 |
281 |
289 |
114 |
36 |
0 |
| VODI |
0 |
0 |
35 |
224 |
507 |
326 |
105 |
0 |
| ODI |
0 |
0 |
12 |
88 |
222 |
427 |
325 |
0 |
| CDI |
0 |
0 |
11 |
82 |
150 |
441 |
2128 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
17 |
81 |
3426 |
3782 |
|
...date precedes bulletin
|
Date: 2023-06-15:
| 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 |
15669 |
6095 |
1521 |
1038 |
583 |
195 |
76 |
0 |
| OW |
0 |
2 |
114 |
168 |
325 |
267 |
49 |
0 |
| VODI |
0 |
0 |
60 |
199 |
327 |
360 |
138 |
0 |
| ODI |
0 |
0 |
43 |
84 |
119 |
392 |
345 |
0 |
| CDI |
0 |
0 |
35 |
101 |
180 |
447 |
2504 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
11 |
17 |
2428 |
4263 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15669 |
6096 |
1542 |
1082 |
723 |
331 |
89 |
0 |
| OW |
0 |
1 |
97 |
140 |
233 |
175 |
33 |
0 |
| VODI |
0 |
0 |
55 |
177 |
272 |
289 |
131 |
0 |
| ODI |
0 |
0 |
38 |
88 |
116 |
410 |
316 |
0 |
| CDI |
0 |
0 |
41 |
103 |
188 |
452 |
2436 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
13 |
21 |
2535 |
4263 |
|
Date: 2023-06-19:
| 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 |
16175 |
5659 |
1316 |
1602 |
459 |
110 |
90 |
12 |
| OW |
0 |
5 |
51 |
329 |
324 |
106 |
41 |
7 |
| VODI |
0 |
0 |
26 |
242 |
442 |
200 |
106 |
2 |
| ODI |
0 |
0 |
1 |
59 |
239 |
549 |
331 |
1 |
| CDI |
0 |
0 |
0 |
56 |
115 |
558 |
1828 |
0 |
| VCDI |
0 |
0 |
0 |
12 |
14 |
125 |
2966 |
4001 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16175 |
5659 |
1313 |
1628 |
713 |
178 |
104 |
18 |
| OW |
0 |
5 |
37 |
281 |
251 |
100 |
63 |
1 |
| VODI |
0 |
0 |
39 |
179 |
283 |
247 |
119 |
2 |
| ODI |
0 |
0 |
4 |
113 |
162 |
311 |
321 |
1 |
| CDI |
0 |
0 |
1 |
84 |
157 |
627 |
2098 |
0 |
| VCDI |
0 |
0 |
0 |
15 |
27 |
185 |
2657 |
4001 |
|
Date: 2023-06-21:
| 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 |
16248 |
5688 |
1579 |
1539 |
510 |
117 |
103 |
0 |
| OW |
0 |
4 |
72 |
399 |
279 |
80 |
65 |
0 |
| VODI |
0 |
2 |
40 |
219 |
355 |
186 |
148 |
0 |
| ODI |
0 |
0 |
9 |
87 |
194 |
392 |
414 |
0 |
| CDI |
0 |
0 |
2 |
72 |
143 |
497 |
1844 |
0 |
| VCDI |
0 |
0 |
0 |
23 |
47 |
101 |
3146 |
3555 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16248 |
5683 |
1498 |
1613 |
646 |
155 |
131 |
0 |
| OW |
0 |
8 |
81 |
255 |
217 |
66 |
64 |
0 |
| VODI |
0 |
3 |
92 |
171 |
268 |
197 |
155 |
0 |
| ODI |
0 |
0 |
28 |
183 |
170 |
267 |
396 |
0 |
| CDI |
0 |
0 |
3 |
87 |
163 |
554 |
2322 |
32 |
| VCDI |
0 |
0 |
0 |
30 |
64 |
134 |
2652 |
3523 |
|
Date: 2023-06-23:
| 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 |
16493 |
5613 |
1409 |
1633 |
704 |
131 |
105 |
0 |
| OW |
0 |
3 |
58 |
314 |
272 |
115 |
76 |
0 |
| VODI |
0 |
0 |
45 |
206 |
308 |
251 |
201 |
0 |
| ODI |
0 |
0 |
12 |
59 |
163 |
309 |
500 |
0 |
| CDI |
0 |
0 |
4 |
65 |
148 |
446 |
1845 |
0 |
| VCDI |
0 |
0 |
0 |
21 |
45 |
75 |
2954 |
3576 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16493 |
5608 |
1342 |
1663 |
811 |
185 |
138 |
0 |
| OW |
0 |
6 |
63 |
215 |
194 |
90 |
75 |
0 |
| VODI |
0 |
2 |
96 |
194 |
233 |
232 |
233 |
0 |
| ODI |
0 |
0 |
18 |
135 |
166 |
212 |
440 |
0 |
| CDI |
0 |
0 |
9 |
61 |
179 |
511 |
2636 |
123 |
| VCDI |
0 |
0 |
0 |
30 |
57 |
97 |
2159 |
3453 |
|
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