Validation of sea ice concentration
Bulletin date: 2022-01-27
Model vs. observations, sea ice class contingency tables
Date: 2022-01-21:
| 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 |
12909 |
5815 |
891 |
372 |
207 |
58 |
6 |
0 |
| OW |
0 |
40 |
168 |
137 |
136 |
71 |
29 |
0 |
| VODI |
0 |
10 |
123 |
163 |
224 |
132 |
74 |
0 |
| ODI |
0 |
1 |
51 |
96 |
202 |
228 |
90 |
0 |
| CDI |
0 |
0 |
29 |
74 |
147 |
310 |
394 |
2 |
| VCDI |
0 |
0 |
72 |
96 |
253 |
556 |
8629 |
5364 |
|
...date precedes bulletin
|
Date: 2022-01-25:
| 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 |
12949 |
6007 |
1219 |
394 |
112 |
18 |
1 |
0 |
| OW |
0 |
32 |
304 |
169 |
85 |
14 |
3 |
0 |
| VODI |
0 |
26 |
174 |
296 |
201 |
96 |
35 |
0 |
| ODI |
0 |
14 |
71 |
264 |
174 |
164 |
163 |
4 |
| CDI |
0 |
11 |
37 |
210 |
210 |
202 |
664 |
7 |
| VCDI |
0 |
15 |
111 |
346 |
392 |
1013 |
8325 |
3627 |
|
...date precedes bulletin
|
Date: 2022-01-27:
| 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 |
12759 |
6200 |
926 |
427 |
61 |
20 |
5 |
0 |
| OW |
0 |
100 |
193 |
193 |
65 |
18 |
4 |
0 |
| VODI |
0 |
121 |
183 |
362 |
193 |
77 |
39 |
0 |
| ODI |
0 |
60 |
99 |
230 |
179 |
151 |
135 |
5 |
| CDI |
0 |
31 |
93 |
208 |
191 |
281 |
486 |
8 |
| VCDI |
0 |
36 |
229 |
730 |
436 |
979 |
8534 |
3112 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12759 |
6188 |
944 |
439 |
61 |
21 |
5 |
0 |
| OW |
0 |
96 |
170 |
180 |
59 |
14 |
4 |
0 |
| VODI |
0 |
93 |
185 |
349 |
196 |
82 |
39 |
0 |
| ODI |
0 |
75 |
93 |
246 |
198 |
148 |
142 |
5 |
| CDI |
0 |
52 |
86 |
205 |
184 |
287 |
505 |
9 |
| VCDI |
0 |
44 |
245 |
731 |
427 |
974 |
8508 |
3111 |
|
Date: 2022-01-31:
| 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 |
12740 |
6087 |
896 |
486 |
80 |
12 |
18 |
0 |
| OW |
0 |
37 |
119 |
181 |
114 |
49 |
30 |
0 |
| VODI |
0 |
19 |
55 |
202 |
172 |
153 |
87 |
0 |
| ODI |
0 |
9 |
29 |
156 |
204 |
337 |
215 |
9 |
| CDI |
0 |
1 |
21 |
62 |
178 |
347 |
630 |
77 |
| VCDI |
0 |
0 |
36 |
117 |
250 |
1017 |
7681 |
5246 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12740 |
6024 |
804 |
417 |
108 |
13 |
26 |
0 |
| OW |
0 |
52 |
120 |
142 |
64 |
36 |
40 |
0 |
| VODI |
0 |
28 |
92 |
164 |
132 |
160 |
89 |
0 |
| ODI |
0 |
14 |
41 |
171 |
163 |
218 |
178 |
13 |
| CDI |
0 |
17 |
19 |
110 |
117 |
240 |
460 |
78 |
| VCDI |
0 |
18 |
80 |
200 |
414 |
1248 |
7868 |
5241 |
|
Date: 2022-02-02:
| 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 |
12906 |
6043 |
614 |
557 |
86 |
17 |
16 |
0 |
| OW |
0 |
119 |
92 |
135 |
98 |
49 |
29 |
0 |
| VODI |
0 |
80 |
91 |
135 |
126 |
117 |
72 |
0 |
| ODI |
0 |
19 |
70 |
102 |
170 |
225 |
120 |
14 |
| CDI |
0 |
6 |
56 |
102 |
232 |
376 |
460 |
79 |
| VCDI |
0 |
2 |
113 |
217 |
194 |
1080 |
8188 |
4952 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12906 |
5935 |
576 |
548 |
105 |
23 |
15 |
0 |
| OW |
0 |
134 |
73 |
104 |
64 |
50 |
29 |
0 |
| VODI |
0 |
104 |
62 |
124 |
105 |
156 |
60 |
0 |
| ODI |
0 |
55 |
69 |
105 |
201 |
206 |
95 |
14 |
| CDI |
0 |
19 |
68 |
93 |
162 |
263 |
399 |
71 |
| VCDI |
0 |
22 |
188 |
274 |
269 |
1166 |
8287 |
4960 |
|
Date: 2022-02-04:
| 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 |
12757 |
5946 |
812 |
379 |
165 |
67 |
19 |
0 |
| OW |
0 |
99 |
114 |
105 |
123 |
76 |
30 |
0 |
| VODI |
0 |
20 |
126 |
120 |
143 |
119 |
65 |
0 |
| ODI |
0 |
1 |
62 |
48 |
164 |
198 |
148 |
14 |
| CDI |
0 |
0 |
69 |
46 |
120 |
294 |
705 |
120 |
| VCDI |
0 |
0 |
64 |
236 |
242 |
688 |
8502 |
5153 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12757 |
5823 |
762 |
369 |
165 |
84 |
21 |
0 |
| OW |
0 |
97 |
87 |
87 |
96 |
60 |
28 |
0 |
| VODI |
0 |
74 |
74 |
82 |
142 |
110 |
96 |
0 |
| ODI |
0 |
50 |
65 |
65 |
139 |
183 |
195 |
16 |
| CDI |
0 |
19 |
78 |
58 |
133 |
301 |
467 |
119 |
| VCDI |
0 |
3 |
181 |
273 |
282 |
704 |
8662 |
5152 |
|
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