Validation of sea ice concentration
Bulletin date: 2023-05-11
Model vs. observations, sea ice class contingency tables
Date: 2023-05-05:
| 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 |
12575 |
6540 |
1245 |
454 |
201 |
61 |
42 |
0 |
| OW |
0 |
21 |
104 |
91 |
98 |
80 |
50 |
0 |
| VODI |
0 |
13 |
24 |
53 |
73 |
118 |
129 |
0 |
| ODI |
0 |
9 |
20 |
26 |
89 |
157 |
229 |
7 |
| CDI |
0 |
9 |
17 |
43 |
94 |
396 |
1753 |
27 |
| VCDI |
0 |
1 |
19 |
56 |
91 |
362 |
8025 |
4757 |
|
...date precedes bulletin
|
Date: 2023-05-09:
| 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 |
12953 |
6712 |
1079 |
517 |
79 |
29 |
21 |
0 |
| OW |
0 |
13 |
77 |
137 |
72 |
29 |
25 |
0 |
| VODI |
0 |
7 |
41 |
121 |
126 |
83 |
82 |
0 |
| ODI |
0 |
3 |
26 |
83 |
146 |
157 |
235 |
0 |
| CDI |
0 |
2 |
17 |
103 |
147 |
759 |
1329 |
3 |
| VCDI |
0 |
1 |
0 |
20 |
69 |
1159 |
7087 |
4610 |
|
...date precedes bulletin
|
Date: 2023-05-11:
| 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 |
13102 |
6779 |
995 |
415 |
126 |
40 |
11 |
0 |
| OW |
0 |
5 |
72 |
124 |
91 |
46 |
39 |
0 |
| VODI |
0 |
1 |
26 |
100 |
125 |
129 |
93 |
0 |
| ODI |
0 |
5 |
10 |
54 |
123 |
160 |
230 |
0 |
| CDI |
0 |
2 |
4 |
48 |
141 |
534 |
1565 |
8 |
| VCDI |
0 |
1 |
0 |
20 |
71 |
658 |
7897 |
4309 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13102 |
6780 |
1007 |
422 |
146 |
51 |
24 |
0 |
| OW |
0 |
3 |
61 |
116 |
81 |
58 |
40 |
0 |
| VODI |
0 |
2 |
25 |
105 |
117 |
107 |
85 |
0 |
| ODI |
0 |
3 |
6 |
55 |
133 |
155 |
256 |
0 |
| CDI |
0 |
4 |
8 |
42 |
131 |
544 |
1605 |
5 |
| VCDI |
0 |
1 |
0 |
21 |
69 |
652 |
7825 |
4312 |
|
Date: 2023-05-15:
| 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 |
13847 |
6096 |
914 |
511 |
107 |
30 |
13 |
0 |
| OW |
2 |
16 |
74 |
138 |
80 |
27 |
39 |
0 |
| VODI |
1 |
10 |
55 |
152 |
187 |
116 |
63 |
0 |
| ODI |
3 |
0 |
10 |
86 |
165 |
295 |
205 |
0 |
| CDI |
1 |
0 |
15 |
85 |
198 |
1075 |
1151 |
14 |
| VCDI |
0 |
0 |
0 |
35 |
60 |
463 |
7411 |
4409 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13847 |
6093 |
878 |
506 |
124 |
43 |
38 |
0 |
| OW |
2 |
21 |
76 |
128 |
89 |
43 |
24 |
0 |
| VODI |
0 |
8 |
50 |
150 |
128 |
100 |
86 |
0 |
| ODI |
4 |
0 |
25 |
51 |
129 |
163 |
243 |
0 |
| CDI |
1 |
0 |
22 |
90 |
209 |
697 |
640 |
1 |
| VCDI |
0 |
0 |
17 |
82 |
118 |
960 |
7851 |
4422 |
|
Date: 2023-05-17:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2023-05-19:
| 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 |
14121 |
6017 |
1062 |
357 |
186 |
84 |
25 |
0 |
| OW |
8 |
25 |
82 |
116 |
89 |
75 |
56 |
0 |
| VODI |
1 |
17 |
38 |
82 |
129 |
145 |
85 |
0 |
| ODI |
2 |
5 |
30 |
47 |
116 |
239 |
220 |
3 |
| CDI |
0 |
4 |
18 |
57 |
147 |
397 |
1963 |
20 |
| VCDI |
0 |
0 |
14 |
50 |
76 |
201 |
7236 |
4514 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14127 |
5938 |
994 |
310 |
162 |
106 |
60 |
0 |
| OW |
1 |
38 |
89 |
85 |
87 |
61 |
70 |
0 |
| VODI |
2 |
36 |
63 |
107 |
90 |
103 |
146 |
1 |
| ODI |
2 |
27 |
32 |
71 |
118 |
135 |
228 |
6 |
| CDI |
0 |
25 |
33 |
64 |
166 |
450 |
1338 |
23 |
| VCDI |
0 |
4 |
33 |
72 |
120 |
286 |
7743 |
4507 |
|
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