Validation of sea ice concentration
Bulletin date: 2022-05-12
Model vs. observations, sea ice class contingency tables
Date: 2022-05-06:
| 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 |
12366 |
5956 |
1073 |
520 |
267 |
140 |
180 |
0 |
| OW |
0 |
10 |
67 |
114 |
111 |
100 |
133 |
0 |
| VODI |
0 |
2 |
24 |
55 |
105 |
162 |
213 |
0 |
| ODI |
0 |
1 |
14 |
43 |
84 |
172 |
321 |
3 |
| CDI |
0 |
0 |
13 |
34 |
74 |
275 |
1710 |
5 |
| VCDI |
0 |
0 |
14 |
44 |
83 |
286 |
8207 |
5178 |
|
...date precedes bulletin
|
Date: 2022-05-10:
| 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 |
12217 |
6387 |
1104 |
615 |
303 |
158 |
79 |
0 |
| OW |
0 |
5 |
61 |
162 |
90 |
88 |
69 |
0 |
| VODI |
0 |
6 |
26 |
146 |
157 |
152 |
143 |
0 |
| ODI |
0 |
0 |
5 |
100 |
132 |
187 |
294 |
6 |
| CDI |
0 |
0 |
1 |
103 |
138 |
339 |
1439 |
18 |
| VCDI |
0 |
0 |
0 |
68 |
175 |
394 |
8308 |
4484 |
|
...date precedes bulletin
|
Date: 2022-05-12:
| 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 |
12644 |
6330 |
967 |
527 |
185 |
191 |
92 |
0 |
| OW |
0 |
10 |
80 |
161 |
72 |
100 |
61 |
0 |
| VODI |
0 |
5 |
41 |
182 |
112 |
140 |
133 |
0 |
| ODI |
0 |
0 |
10 |
140 |
117 |
195 |
288 |
2 |
| CDI |
0 |
0 |
0 |
115 |
164 |
455 |
1389 |
18 |
| VCDI |
0 |
0 |
0 |
73 |
146 |
552 |
8000 |
4462 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12644 |
6331 |
976 |
552 |
204 |
220 |
108 |
0 |
| OW |
0 |
14 |
75 |
146 |
66 |
80 |
60 |
0 |
| VODI |
0 |
0 |
37 |
161 |
106 |
135 |
121 |
0 |
| ODI |
0 |
0 |
10 |
143 |
111 |
186 |
261 |
3 |
| CDI |
0 |
0 |
0 |
116 |
156 |
505 |
1464 |
16 |
| VCDI |
0 |
0 |
0 |
80 |
153 |
507 |
7949 |
4463 |
|
Date: 2022-05-16:
| 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 |
12444 |
6611 |
1147 |
412 |
220 |
120 |
83 |
0 |
| OW |
0 |
5 |
100 |
177 |
105 |
60 |
80 |
0 |
| VODI |
0 |
3 |
55 |
166 |
176 |
204 |
159 |
3 |
| ODI |
0 |
0 |
28 |
68 |
156 |
333 |
482 |
6 |
| CDI |
0 |
0 |
34 |
59 |
195 |
443 |
2204 |
18 |
| VCDI |
0 |
0 |
39 |
74 |
152 |
292 |
6660 |
4586 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12444 |
6607 |
1154 |
429 |
242 |
154 |
128 |
0 |
| OW |
0 |
8 |
66 |
109 |
100 |
61 |
87 |
0 |
| VODI |
0 |
4 |
50 |
172 |
107 |
141 |
179 |
2 |
| ODI |
0 |
0 |
36 |
86 |
129 |
192 |
375 |
6 |
| CDI |
0 |
0 |
35 |
48 |
190 |
458 |
1742 |
20 |
| VCDI |
0 |
0 |
62 |
112 |
236 |
446 |
7157 |
4585 |
|
Date: 2022-05-18:
| 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 |
12595 |
6555 |
948 |
581 |
293 |
128 |
54 |
0 |
| OW |
0 |
20 |
59 |
149 |
130 |
147 |
76 |
0 |
| VODI |
0 |
13 |
62 |
114 |
170 |
232 |
189 |
0 |
| ODI |
0 |
2 |
32 |
63 |
161 |
265 |
447 |
0 |
| CDI |
0 |
0 |
26 |
57 |
169 |
594 |
1965 |
0 |
| VCDI |
0 |
0 |
69 |
109 |
148 |
284 |
6689 |
4564 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12595 |
6530 |
928 |
535 |
327 |
172 |
108 |
0 |
| OW |
0 |
30 |
48 |
103 |
85 |
114 |
76 |
0 |
| VODI |
0 |
19 |
57 |
133 |
127 |
178 |
164 |
0 |
| ODI |
0 |
10 |
36 |
80 |
140 |
178 |
380 |
0 |
| CDI |
0 |
1 |
29 |
56 |
180 |
600 |
1878 |
6 |
| VCDI |
0 |
0 |
98 |
166 |
212 |
408 |
6814 |
4558 |
|
Date: 2022-05-20:
| 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 |
13481 |
5716 |
878 |
852 |
232 |
75 |
61 |
0 |
| OW |
4 |
20 |
74 |
201 |
140 |
88 |
65 |
0 |
| VODI |
0 |
15 |
81 |
166 |
200 |
130 |
185 |
0 |
| ODI |
0 |
2 |
42 |
101 |
189 |
219 |
403 |
0 |
| CDI |
0 |
0 |
28 |
124 |
224 |
696 |
1724 |
0 |
| VCDI |
0 |
0 |
72 |
160 |
195 |
480 |
6351 |
4485 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13481 |
5678 |
839 |
828 |
257 |
98 |
96 |
0 |
| OW |
4 |
28 |
70 |
148 |
107 |
70 |
63 |
0 |
| VODI |
0 |
28 |
75 |
186 |
155 |
108 |
158 |
0 |
| ODI |
0 |
19 |
45 |
104 |
162 |
131 |
431 |
0 |
| CDI |
0 |
0 |
34 |
101 |
209 |
568 |
1540 |
14 |
| VCDI |
0 |
0 |
112 |
237 |
290 |
713 |
6501 |
4471 |
|
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