Validation of sea ice concentration
Bulletin date: 2022-04-28
Model vs. observations, sea ice class contingency tables
Date: 2022-04-22:
| 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 |
13261 |
5646 |
939 |
352 |
130 |
84 |
15 |
0 |
| OW |
0 |
32 |
256 |
129 |
137 |
122 |
33 |
0 |
| VODI |
0 |
1 |
128 |
149 |
193 |
181 |
89 |
6 |
| ODI |
0 |
0 |
29 |
61 |
100 |
135 |
171 |
18 |
| CDI |
0 |
0 |
14 |
37 |
71 |
261 |
908 |
36 |
| VCDI |
0 |
0 |
7 |
9 |
42 |
216 |
6801 |
7360 |
|
...date precedes bulletin
|
Date: 2022-04-26:
| 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 |
12472 |
5853 |
1177 |
540 |
278 |
134 |
8 |
0 |
| OW |
0 |
5 |
109 |
165 |
132 |
104 |
39 |
0 |
| VODI |
0 |
2 |
32 |
130 |
185 |
224 |
93 |
0 |
| ODI |
0 |
0 |
7 |
27 |
84 |
222 |
146 |
0 |
| CDI |
0 |
0 |
3 |
23 |
70 |
468 |
860 |
2 |
| VCDI |
0 |
0 |
11 |
25 |
65 |
643 |
8003 |
5818 |
|
...date precedes bulletin
|
Date: 2022-04-28:
| 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 |
12197 |
5895 |
1222 |
566 |
265 |
120 |
69 |
0 |
| OW |
0 |
23 |
196 |
151 |
98 |
103 |
67 |
0 |
| VODI |
0 |
0 |
78 |
121 |
121 |
150 |
183 |
0 |
| ODI |
0 |
0 |
10 |
60 |
98 |
158 |
309 |
1 |
| CDI |
0 |
0 |
7 |
67 |
92 |
259 |
1041 |
24 |
| VCDI |
0 |
0 |
9 |
34 |
73 |
224 |
7722 |
6346 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12197 |
5908 |
1260 |
607 |
270 |
137 |
77 |
0 |
| OW |
0 |
9 |
156 |
114 |
109 |
93 |
77 |
0 |
| VODI |
0 |
1 |
77 |
103 |
100 |
146 |
180 |
0 |
| ODI |
0 |
0 |
12 |
73 |
104 |
152 |
339 |
1 |
| CDI |
0 |
0 |
7 |
68 |
87 |
266 |
1020 |
20 |
| VCDI |
0 |
0 |
10 |
34 |
77 |
220 |
7698 |
6350 |
|
Date: 2022-05-02:
| 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 |
11733 |
6088 |
1532 |
606 |
271 |
175 |
111 |
0 |
| OW |
0 |
14 |
153 |
129 |
117 |
83 |
72 |
0 |
| VODI |
0 |
0 |
74 |
169 |
165 |
118 |
137 |
0 |
| ODI |
0 |
0 |
27 |
78 |
120 |
175 |
252 |
1 |
| CDI |
0 |
0 |
30 |
44 |
122 |
356 |
971 |
6 |
| VCDI |
0 |
0 |
39 |
65 |
172 |
435 |
8657 |
4862 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11733 |
6040 |
1370 |
597 |
302 |
216 |
139 |
0 |
| OW |
0 |
59 |
204 |
96 |
90 |
76 |
94 |
0 |
| VODI |
0 |
3 |
129 |
127 |
123 |
96 |
165 |
0 |
| ODI |
0 |
0 |
65 |
107 |
124 |
127 |
256 |
2 |
| CDI |
0 |
0 |
23 |
69 |
125 |
318 |
843 |
4 |
| VCDI |
0 |
0 |
64 |
95 |
203 |
509 |
8703 |
4863 |
|
Date: 2022-05-04:
| 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 |
11965 |
5955 |
1331 |
585 |
330 |
179 |
183 |
0 |
| OW |
0 |
7 |
75 |
120 |
102 |
115 |
109 |
0 |
| VODI |
0 |
0 |
25 |
73 |
128 |
143 |
185 |
0 |
| ODI |
0 |
2 |
21 |
88 |
89 |
196 |
269 |
0 |
| CDI |
0 |
0 |
19 |
65 |
93 |
375 |
1368 |
5 |
| VCDI |
0 |
0 |
2 |
68 |
76 |
214 |
8203 |
5396 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11965 |
5816 |
1146 |
538 |
317 |
200 |
253 |
0 |
| OW |
0 |
114 |
153 |
90 |
88 |
86 |
126 |
0 |
| VODI |
0 |
32 |
103 |
99 |
104 |
121 |
212 |
0 |
| ODI |
0 |
2 |
35 |
61 |
99 |
195 |
314 |
2 |
| CDI |
0 |
0 |
10 |
74 |
87 |
329 |
1162 |
7 |
| VCDI |
0 |
0 |
26 |
137 |
123 |
291 |
8250 |
5392 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12366 |
5804 |
937 |
446 |
288 |
202 |
292 |
0 |
| OW |
0 |
97 |
113 |
76 |
77 |
68 |
164 |
0 |
| VODI |
0 |
67 |
111 |
110 |
95 |
119 |
214 |
0 |
| ODI |
0 |
1 |
14 |
71 |
66 |
151 |
348 |
14 |
| CDI |
0 |
0 |
7 |
38 |
74 |
190 |
1237 |
54 |
| VCDI |
0 |
0 |
23 |
69 |
124 |
405 |
8509 |
5118 |
|
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