Validation of sea ice concentration
Bulletin date: 2023-06-08
Model vs. observations, sea ice class contingency tables
Date: 2023-06-02:
| 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 |
14381 |
6492 |
1753 |
665 |
335 |
124 |
54 |
0 |
| OW |
0 |
20 |
109 |
130 |
195 |
120 |
24 |
4 |
| VODI |
0 |
18 |
65 |
159 |
237 |
276 |
156 |
7 |
| ODI |
0 |
13 |
33 |
108 |
190 |
478 |
505 |
6 |
| CDI |
0 |
18 |
65 |
85 |
128 |
339 |
2167 |
0 |
| VCDI |
0 |
0 |
67 |
84 |
84 |
108 |
4333 |
4024 |
|
...date precedes bulletin
|
Date: 2023-06-06:
| 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 |
14900 |
6371 |
1588 |
829 |
405 |
120 |
56 |
0 |
| OW |
0 |
9 |
101 |
207 |
210 |
98 |
41 |
0 |
| VODI |
0 |
4 |
40 |
150 |
276 |
406 |
117 |
5 |
| ODI |
0 |
2 |
21 |
98 |
185 |
528 |
636 |
2 |
| CDI |
0 |
2 |
27 |
66 |
97 |
306 |
1925 |
4 |
| VCDI |
0 |
0 |
34 |
42 |
49 |
81 |
4434 |
3687 |
|
...date precedes bulletin
|
Date: 2023-06-08:
| 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 |
14499 |
6676 |
1795 |
878 |
454 |
102 |
59 |
0 |
| OW |
0 |
11 |
71 |
188 |
211 |
180 |
54 |
0 |
| VODI |
0 |
5 |
58 |
112 |
217 |
520 |
253 |
0 |
| ODI |
0 |
6 |
16 |
106 |
147 |
323 |
684 |
2 |
| CDI |
0 |
4 |
38 |
69 |
119 |
326 |
1969 |
6 |
| VCDI |
0 |
0 |
33 |
57 |
64 |
94 |
4253 |
3500 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14499 |
6675 |
1804 |
915 |
493 |
136 |
71 |
0 |
| OW |
0 |
11 |
66 |
147 |
172 |
190 |
62 |
0 |
| VODI |
0 |
6 |
49 |
120 |
204 |
462 |
251 |
0 |
| ODI |
0 |
6 |
20 |
101 |
156 |
333 |
657 |
0 |
| CDI |
0 |
4 |
35 |
74 |
125 |
325 |
1912 |
8 |
| VCDI |
0 |
0 |
37 |
53 |
62 |
99 |
4319 |
3500 |
|
Date: 2023-06-12:
| 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 |
15975 |
5965 |
1303 |
1159 |
269 |
21 |
62 |
0 |
| OW |
0 |
8 |
59 |
334 |
207 |
49 |
32 |
0 |
| VODI |
0 |
0 |
17 |
320 |
560 |
203 |
85 |
0 |
| ODI |
0 |
0 |
12 |
137 |
441 |
406 |
284 |
0 |
| CDI |
0 |
0 |
2 |
86 |
191 |
651 |
1738 |
0 |
| VCDI |
0 |
0 |
0 |
7 |
21 |
218 |
3863 |
3474 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15975 |
5939 |
1246 |
1267 |
560 |
124 |
94 |
0 |
| OW |
0 |
25 |
59 |
275 |
300 |
100 |
51 |
0 |
| VODI |
0 |
7 |
46 |
242 |
331 |
173 |
166 |
0 |
| ODI |
0 |
2 |
25 |
125 |
241 |
264 |
366 |
0 |
| CDI |
0 |
0 |
17 |
115 |
225 |
668 |
1752 |
0 |
| VCDI |
0 |
0 |
0 |
19 |
32 |
219 |
3635 |
3474 |
|
Date: 2023-06-14:
| 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 |
15577 |
6165 |
1579 |
1108 |
476 |
102 |
85 |
0 |
| OW |
0 |
0 |
116 |
222 |
282 |
185 |
49 |
0 |
| VODI |
0 |
0 |
69 |
219 |
386 |
365 |
113 |
0 |
| ODI |
0 |
0 |
38 |
93 |
168 |
400 |
333 |
0 |
| CDI |
0 |
0 |
46 |
84 |
156 |
437 |
2307 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
16 |
69 |
3094 |
3818 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15577 |
6127 |
1497 |
1193 |
767 |
318 |
138 |
0 |
| OW |
0 |
23 |
106 |
193 |
223 |
168 |
63 |
0 |
| VODI |
0 |
12 |
102 |
135 |
174 |
263 |
232 |
0 |
| ODI |
0 |
3 |
80 |
88 |
113 |
274 |
375 |
0 |
| CDI |
0 |
0 |
59 |
113 |
190 |
455 |
2306 |
0 |
| VCDI |
0 |
0 |
4 |
6 |
17 |
80 |
2867 |
3818 |
|
Date: 2023-06-16:
| 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 |
16025 |
5879 |
1376 |
1299 |
404 |
162 |
82 |
0 |
| OW |
0 |
6 |
113 |
277 |
362 |
208 |
47 |
0 |
| VODI |
0 |
0 |
67 |
222 |
307 |
270 |
146 |
0 |
| ODI |
0 |
0 |
33 |
96 |
123 |
306 |
369 |
0 |
| CDI |
0 |
0 |
42 |
107 |
181 |
470 |
2505 |
0 |
| VCDI |
0 |
0 |
2 |
9 |
22 |
22 |
2456 |
4164 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16025 |
5841 |
1313 |
1431 |
726 |
388 |
133 |
0 |
| OW |
0 |
25 |
112 |
180 |
197 |
158 |
92 |
0 |
| VODI |
0 |
15 |
91 |
140 |
171 |
207 |
259 |
0 |
| ODI |
0 |
4 |
56 |
107 |
100 |
225 |
403 |
0 |
| CDI |
0 |
0 |
55 |
125 |
179 |
437 |
2486 |
17 |
| VCDI |
0 |
0 |
6 |
27 |
26 |
23 |
2232 |
4147 |
|
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