Validation of sea ice concentration
Bulletin date: 2022-03-03
Model vs. observations, sea ice class contingency tables
Date: 2022-02-25:
| 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 |
12582 |
5680 |
846 |
533 |
184 |
106 |
69 |
0 |
| OW |
0 |
37 |
147 |
137 |
85 |
77 |
22 |
0 |
| VODI |
0 |
22 |
120 |
153 |
154 |
182 |
58 |
0 |
| ODI |
0 |
9 |
68 |
141 |
140 |
224 |
108 |
3 |
| CDI |
0 |
0 |
57 |
126 |
129 |
252 |
326 |
57 |
| VCDI |
0 |
0 |
82 |
214 |
239 |
939 |
8744 |
5107 |
|
...date precedes bulletin
|
Date: 2022-03-01:
| 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 |
13483 |
5632 |
470 |
494 |
144 |
69 |
77 |
0 |
| OW |
0 |
125 |
75 |
159 |
96 |
43 |
15 |
0 |
| VODI |
0 |
65 |
62 |
199 |
155 |
89 |
56 |
0 |
| ODI |
0 |
21 |
60 |
156 |
134 |
117 |
96 |
0 |
| CDI |
0 |
7 |
43 |
162 |
144 |
232 |
421 |
10 |
| VCDI |
0 |
54 |
89 |
235 |
322 |
1230 |
8209 |
4909 |
|
...date precedes bulletin
|
Date: 2022-03-03:
| 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 |
13266 |
5626 |
728 |
343 |
112 |
78 |
108 |
0 |
| OW |
0 |
88 |
141 |
171 |
108 |
42 |
22 |
0 |
| VODI |
0 |
34 |
125 |
180 |
161 |
75 |
64 |
0 |
| ODI |
0 |
17 |
70 |
110 |
192 |
140 |
95 |
0 |
| CDI |
0 |
8 |
57 |
81 |
182 |
282 |
452 |
23 |
| VCDI |
0 |
36 |
97 |
167 |
257 |
903 |
6928 |
6590 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13266 |
5643 |
730 |
354 |
112 |
82 |
109 |
0 |
| OW |
0 |
78 |
140 |
165 |
93 |
37 |
22 |
0 |
| VODI |
0 |
27 |
129 |
178 |
173 |
79 |
60 |
0 |
| ODI |
0 |
16 |
68 |
105 |
184 |
137 |
91 |
0 |
| CDI |
0 |
9 |
51 |
84 |
189 |
281 |
447 |
27 |
| VCDI |
0 |
36 |
100 |
166 |
261 |
904 |
6940 |
6586 |
|
Date: 2022-03-07:
| 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 |
13389 |
5488 |
804 |
225 |
140 |
94 |
104 |
0 |
| OW |
0 |
77 |
206 |
81 |
91 |
54 |
26 |
0 |
| VODI |
0 |
17 |
182 |
115 |
99 |
151 |
55 |
0 |
| ODI |
0 |
0 |
86 |
92 |
140 |
314 |
135 |
0 |
| CDI |
0 |
0 |
33 |
78 |
142 |
531 |
693 |
0 |
| VCDI |
0 |
0 |
63 |
77 |
161 |
504 |
7432 |
6280 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13389 |
5407 |
712 |
220 |
143 |
116 |
126 |
0 |
| OW |
0 |
145 |
167 |
56 |
72 |
59 |
35 |
0 |
| VODI |
0 |
27 |
206 |
87 |
101 |
134 |
64 |
0 |
| ODI |
0 |
3 |
130 |
81 |
86 |
275 |
129 |
0 |
| CDI |
0 |
0 |
71 |
112 |
156 |
442 |
616 |
0 |
| VCDI |
0 |
0 |
88 |
112 |
215 |
622 |
7475 |
6280 |
|
Date: 2022-03-09:
| 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 |
13270 |
5668 |
771 |
211 |
150 |
65 |
87 |
0 |
| OW |
0 |
64 |
192 |
102 |
70 |
47 |
35 |
0 |
| VODI |
0 |
25 |
182 |
118 |
133 |
101 |
64 |
0 |
| ODI |
0 |
0 |
65 |
85 |
167 |
160 |
141 |
0 |
| CDI |
0 |
0 |
42 |
79 |
167 |
291 |
660 |
5 |
| VCDI |
0 |
0 |
69 |
106 |
199 |
404 |
7338 |
6826 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13270 |
5569 |
696 |
213 |
164 |
86 |
126 |
0 |
| OW |
0 |
117 |
162 |
88 |
72 |
49 |
55 |
0 |
| VODI |
0 |
56 |
172 |
102 |
108 |
104 |
85 |
0 |
| ODI |
0 |
13 |
107 |
80 |
129 |
136 |
178 |
0 |
| CDI |
0 |
2 |
78 |
81 |
178 |
273 |
647 |
5 |
| VCDI |
0 |
0 |
106 |
137 |
235 |
420 |
7234 |
6826 |
|
Date: 2022-03-11:
| 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 |
13422 |
5576 |
989 |
223 |
102 |
46 |
90 |
0 |
| OW |
0 |
76 |
245 |
105 |
37 |
35 |
40 |
0 |
| VODI |
0 |
35 |
215 |
179 |
86 |
54 |
71 |
0 |
| ODI |
0 |
13 |
82 |
180 |
141 |
135 |
187 |
0 |
| CDI |
0 |
9 |
63 |
175 |
207 |
162 |
526 |
36 |
| VCDI |
0 |
0 |
124 |
273 |
500 |
676 |
7659 |
5385 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13422 |
5397 |
788 |
238 |
130 |
84 |
176 |
0 |
| OW |
0 |
128 |
194 |
60 |
39 |
34 |
60 |
0 |
| VODI |
0 |
93 |
248 |
119 |
81 |
54 |
99 |
0 |
| ODI |
0 |
38 |
144 |
143 |
106 |
88 |
184 |
1 |
| CDI |
0 |
23 |
137 |
210 |
152 |
162 |
490 |
76 |
| VCDI |
0 |
30 |
207 |
365 |
565 |
686 |
7564 |
5344 |
|
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