Validation of sea ice concentration
Bulletin date: 2023-03-16
Model vs. observations, sea ice class contingency tables
Date: 2023-03-10:
| 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 |
12199 |
6302 |
1058 |
641 |
238 |
43 |
6 |
0 |
| OW |
0 |
19 |
94 |
207 |
170 |
61 |
14 |
0 |
| VODI |
0 |
15 |
44 |
153 |
197 |
115 |
24 |
0 |
| ODI |
0 |
9 |
16 |
84 |
151 |
167 |
73 |
0 |
| CDI |
0 |
2 |
23 |
68 |
165 |
312 |
231 |
80 |
| VCDI |
0 |
0 |
93 |
223 |
313 |
1288 |
9105 |
4156 |
|
...date precedes bulletin
|
Date: 2023-03-14:
| 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 |
12210 |
6420 |
1120 |
516 |
194 |
58 |
8 |
0 |
| OW |
0 |
49 |
119 |
113 |
114 |
60 |
18 |
0 |
| VODI |
0 |
37 |
72 |
128 |
157 |
113 |
44 |
0 |
| ODI |
0 |
23 |
47 |
75 |
160 |
203 |
123 |
0 |
| CDI |
0 |
29 |
35 |
50 |
135 |
197 |
405 |
16 |
| VCDI |
0 |
12 |
109 |
179 |
237 |
788 |
8965 |
4821 |
|
...date precedes bulletin
|
Date: 2023-03-16:
| 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 |
12240 |
6316 |
1091 |
456 |
180 |
100 |
12 |
0 |
| OW |
0 |
39 |
109 |
132 |
91 |
84 |
16 |
0 |
| VODI |
0 |
24 |
49 |
144 |
152 |
173 |
41 |
0 |
| ODI |
0 |
17 |
25 |
72 |
92 |
282 |
110 |
0 |
| CDI |
0 |
19 |
15 |
67 |
114 |
304 |
374 |
12 |
| VCDI |
0 |
48 |
42 |
123 |
215 |
837 |
9044 |
4898 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12240 |
6310 |
1087 |
462 |
187 |
96 |
9 |
0 |
| OW |
0 |
42 |
106 |
109 |
76 |
81 |
20 |
0 |
| VODI |
0 |
27 |
55 |
154 |
144 |
170 |
45 |
0 |
| ODI |
0 |
18 |
25 |
78 |
100 |
254 |
91 |
0 |
| CDI |
0 |
18 |
13 |
66 |
108 |
320 |
393 |
12 |
| VCDI |
0 |
48 |
45 |
125 |
229 |
859 |
9039 |
4898 |
|
Date: 2023-03-20:
| 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 |
12087 |
6191 |
1055 |
564 |
266 |
108 |
14 |
0 |
| OW |
0 |
4 |
56 |
129 |
111 |
88 |
20 |
0 |
| VODI |
0 |
0 |
32 |
90 |
129 |
177 |
59 |
5 |
| ODI |
0 |
0 |
14 |
39 |
93 |
247 |
119 |
6 |
| CDI |
0 |
0 |
12 |
37 |
62 |
463 |
326 |
25 |
| VCDI |
0 |
0 |
13 |
124 |
113 |
625 |
7036 |
7620 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12087 |
6160 |
991 |
495 |
263 |
121 |
16 |
0 |
| OW |
0 |
20 |
74 |
136 |
99 |
89 |
19 |
3 |
| VODI |
0 |
12 |
47 |
121 |
128 |
168 |
62 |
6 |
| ODI |
0 |
3 |
24 |
65 |
103 |
198 |
113 |
3 |
| CDI |
0 |
0 |
25 |
58 |
84 |
426 |
328 |
30 |
| VCDI |
0 |
0 |
21 |
108 |
97 |
706 |
7036 |
7614 |
|
Date: 2023-03-22:
| 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 |
12013 |
6132 |
1100 |
494 |
245 |
174 |
26 |
0 |
| OW |
0 |
15 |
66 |
86 |
125 |
104 |
38 |
0 |
| VODI |
0 |
12 |
28 |
77 |
105 |
178 |
75 |
7 |
| ODI |
0 |
3 |
18 |
49 |
63 |
155 |
135 |
17 |
| CDI |
0 |
0 |
19 |
68 |
50 |
270 |
347 |
30 |
| VCDI |
0 |
0 |
25 |
121 |
127 |
374 |
7779 |
7409 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12013 |
6111 |
1027 |
441 |
253 |
181 |
32 |
0 |
| OW |
0 |
28 |
92 |
92 |
93 |
105 |
52 |
6 |
| VODI |
0 |
21 |
56 |
102 |
126 |
161 |
95 |
8 |
| ODI |
0 |
2 |
28 |
85 |
82 |
170 |
183 |
42 |
| CDI |
0 |
0 |
33 |
87 |
64 |
281 |
486 |
109 |
| VCDI |
0 |
0 |
20 |
88 |
97 |
357 |
7552 |
7298 |
|
Date: 2023-03-24:
| 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 |
11874 |
6069 |
1184 |
483 |
257 |
160 |
61 |
0 |
| OW |
0 |
18 |
62 |
83 |
98 |
116 |
59 |
0 |
| VODI |
0 |
20 |
44 |
50 |
118 |
148 |
102 |
10 |
| ODI |
0 |
2 |
41 |
25 |
62 |
153 |
138 |
15 |
| CDI |
0 |
0 |
41 |
44 |
66 |
279 |
284 |
43 |
| VCDI |
0 |
0 |
9 |
77 |
102 |
494 |
8676 |
6592 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11874 |
6064 |
1163 |
459 |
256 |
190 |
62 |
0 |
| OW |
0 |
27 |
74 |
93 |
87 |
106 |
69 |
2 |
| VODI |
0 |
14 |
51 |
68 |
129 |
171 |
116 |
14 |
| ODI |
0 |
4 |
46 |
51 |
87 |
190 |
179 |
55 |
| CDI |
0 |
0 |
39 |
64 |
67 |
273 |
482 |
88 |
| VCDI |
0 |
0 |
8 |
27 |
77 |
420 |
8412 |
6501 |
|
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