Validation of sea ice concentration
Bulletin date: 2023-01-05
Model vs. observations, sea ice class contingency tables
Date: 2022-12-30:
| 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 |
14364 |
6309 |
1143 |
387 |
151 |
42 |
55 |
0 |
| OW |
0 |
219 |
261 |
146 |
87 |
56 |
37 |
0 |
| VODI |
0 |
33 |
227 |
207 |
150 |
102 |
98 |
0 |
| ODI |
0 |
3 |
124 |
120 |
129 |
123 |
112 |
6 |
| CDI |
0 |
0 |
77 |
119 |
99 |
180 |
349 |
59 |
| VCDI |
0 |
0 |
58 |
275 |
193 |
791 |
6536 |
4732 |
|
...date precedes bulletin
|
Date: 2023-01-03:
| 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 |
14760 |
6125 |
1048 |
281 |
88 |
64 |
1 |
0 |
| OW |
0 |
239 |
204 |
109 |
69 |
80 |
11 |
0 |
| VODI |
0 |
143 |
232 |
125 |
96 |
141 |
39 |
0 |
| ODI |
0 |
68 |
154 |
94 |
76 |
159 |
94 |
0 |
| CDI |
0 |
24 |
140 |
139 |
96 |
201 |
332 |
13 |
| VCDI |
0 |
44 |
219 |
300 |
548 |
740 |
6845 |
4018 |
|
...date precedes bulletin
|
Date: 2023-01-05:
| 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 |
14431 |
6380 |
728 |
334 |
70 |
11 |
0 |
0 |
| OW |
0 |
249 |
260 |
157 |
54 |
30 |
2 |
0 |
| VODI |
0 |
167 |
227 |
244 |
89 |
102 |
15 |
0 |
| ODI |
0 |
86 |
107 |
167 |
126 |
134 |
39 |
0 |
| CDI |
0 |
55 |
95 |
204 |
174 |
220 |
288 |
0 |
| VCDI |
0 |
65 |
167 |
366 |
500 |
891 |
6825 |
4100 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14431 |
6473 |
754 |
333 |
69 |
13 |
0 |
0 |
| OW |
0 |
173 |
228 |
158 |
54 |
27 |
4 |
0 |
| VODI |
0 |
143 |
214 |
212 |
82 |
89 |
19 |
0 |
| ODI |
0 |
81 |
114 |
186 |
120 |
133 |
43 |
0 |
| CDI |
0 |
56 |
97 |
196 |
157 |
219 |
274 |
0 |
| VCDI |
0 |
76 |
177 |
387 |
531 |
907 |
6829 |
4100 |
|
Date: 2023-01-09:
| 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 |
14658 |
6393 |
756 |
361 |
22 |
5 |
0 |
0 |
| OW |
0 |
100 |
143 |
248 |
92 |
25 |
2 |
0 |
| VODI |
0 |
60 |
90 |
279 |
229 |
73 |
13 |
0 |
| ODI |
0 |
17 |
46 |
143 |
204 |
174 |
45 |
0 |
| CDI |
0 |
15 |
54 |
180 |
208 |
368 |
383 |
21 |
| VCDI |
0 |
2 |
20 |
107 |
276 |
811 |
7015 |
4521 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14658 |
6084 |
644 |
288 |
48 |
12 |
1 |
0 |
| OW |
0 |
185 |
141 |
168 |
82 |
26 |
7 |
0 |
| VODI |
0 |
112 |
115 |
234 |
132 |
72 |
37 |
0 |
| ODI |
0 |
95 |
60 |
161 |
94 |
66 |
97 |
0 |
| CDI |
0 |
77 |
46 |
206 |
144 |
224 |
316 |
38 |
| VCDI |
0 |
34 |
103 |
261 |
531 |
1056 |
7000 |
4504 |
|
Date: 2023-01-11:
| 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 |
15345 |
6145 |
401 |
174 |
26 |
6 |
2 |
0 |
| OW |
0 |
305 |
163 |
131 |
30 |
11 |
6 |
0 |
| VODI |
0 |
181 |
230 |
227 |
47 |
14 |
14 |
0 |
| ODI |
0 |
66 |
87 |
216 |
106 |
62 |
28 |
0 |
| CDI |
0 |
47 |
60 |
137 |
158 |
190 |
233 |
7 |
| VCDI |
0 |
30 |
94 |
273 |
337 |
853 |
8098 |
3619 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15345 |
5826 |
288 |
114 |
12 |
10 |
5 |
0 |
| OW |
0 |
362 |
198 |
124 |
13 |
5 |
6 |
0 |
| VODI |
0 |
243 |
168 |
254 |
62 |
15 |
27 |
0 |
| ODI |
0 |
118 |
79 |
157 |
81 |
51 |
63 |
0 |
| CDI |
0 |
128 |
111 |
141 |
138 |
147 |
374 |
0 |
| VCDI |
0 |
97 |
191 |
368 |
398 |
908 |
7906 |
3626 |
|
Date: 2023-01-13:
| 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 |
14984 |
6074 |
560 |
177 |
39 |
4 |
2 |
0 |
| OW |
0 |
275 |
244 |
124 |
45 |
14 |
7 |
0 |
| VODI |
0 |
149 |
248 |
231 |
94 |
24 |
13 |
0 |
| ODI |
0 |
37 |
88 |
176 |
126 |
91 |
80 |
0 |
| CDI |
0 |
24 |
60 |
140 |
143 |
139 |
216 |
65 |
| VCDI |
0 |
10 |
90 |
228 |
407 |
642 |
7359 |
4730 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14984 |
5891 |
466 |
149 |
21 |
10 |
5 |
0 |
| OW |
0 |
298 |
220 |
128 |
72 |
11 |
8 |
0 |
| VODI |
0 |
222 |
225 |
212 |
151 |
86 |
35 |
0 |
| ODI |
0 |
80 |
84 |
141 |
101 |
84 |
75 |
0 |
| CDI |
0 |
42 |
96 |
137 |
104 |
125 |
405 |
1 |
| VCDI |
0 |
36 |
199 |
309 |
405 |
598 |
7149 |
4794 |
|
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