Validation of sea ice concentration
Bulletin date: 2019-05-02
Model vs. observations, sea ice class contingency tables
Date: 2019-04-26:
| 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 |
13487 |
6597 |
812 |
557 |
234 |
96 |
77 |
0 |
| OW |
0 |
60 |
110 |
181 |
113 |
76 |
61 |
0 |
| VODI |
0 |
12 |
29 |
113 |
209 |
205 |
234 |
0 |
| ODI |
0 |
2 |
1 |
48 |
96 |
178 |
407 |
5 |
| CDI |
0 |
6 |
2 |
26 |
52 |
199 |
893 |
13 |
| VCDI |
0 |
0 |
1 |
8 |
31 |
191 |
7329 |
5408 |
|
...date precedes bulletin
|
Date: 2019-04-30:
| 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 |
13460 |
6491 |
743 |
588 |
367 |
129 |
170 |
0 |
| OW |
0 |
26 |
55 |
111 |
143 |
61 |
104 |
0 |
| VODI |
0 |
7 |
14 |
88 |
136 |
174 |
265 |
0 |
| ODI |
0 |
8 |
4 |
56 |
99 |
181 |
520 |
0 |
| CDI |
0 |
0 |
1 |
28 |
75 |
160 |
907 |
0 |
| VCDI |
0 |
0 |
0 |
39 |
52 |
232 |
7079 |
5586 |
|
...date precedes bulletin
|
Date: 2019-05-02:
| 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 |
13282 |
6482 |
951 |
493 |
231 |
232 |
149 |
0 |
| OW |
0 |
13 |
102 |
132 |
104 |
76 |
121 |
0 |
| VODI |
0 |
7 |
58 |
120 |
150 |
116 |
302 |
1 |
| ODI |
0 |
0 |
24 |
82 |
113 |
165 |
490 |
14 |
| CDI |
0 |
0 |
16 |
58 |
102 |
185 |
650 |
64 |
| VCDI |
0 |
0 |
33 |
56 |
138 |
328 |
7659 |
4860 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13282 |
6485 |
979 |
501 |
247 |
246 |
175 |
0 |
| OW |
0 |
10 |
75 |
118 |
81 |
62 |
128 |
0 |
| VODI |
0 |
2 |
55 |
132 |
147 |
110 |
287 |
0 |
| ODI |
0 |
5 |
22 |
71 |
113 |
172 |
465 |
22 |
| CDI |
0 |
0 |
17 |
50 |
97 |
179 |
658 |
65 |
| VCDI |
0 |
0 |
36 |
69 |
153 |
333 |
7658 |
4852 |
|
Date: 2019-05-06:
| 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 |
12491 |
6850 |
1171 |
874 |
283 |
171 |
45 |
0 |
| OW |
0 |
12 |
19 |
218 |
126 |
112 |
50 |
0 |
| VODI |
0 |
12 |
5 |
226 |
219 |
206 |
104 |
0 |
| ODI |
0 |
2 |
4 |
76 |
148 |
442 |
256 |
0 |
| CDI |
0 |
0 |
0 |
76 |
107 |
742 |
482 |
0 |
| VCDI |
0 |
0 |
0 |
66 |
126 |
1523 |
6851 |
4064 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12491 |
6848 |
1147 |
828 |
333 |
251 |
86 |
0 |
| OW |
0 |
14 |
40 |
141 |
81 |
109 |
100 |
0 |
| VODI |
0 |
9 |
6 |
191 |
154 |
242 |
220 |
0 |
| ODI |
0 |
4 |
2 |
152 |
149 |
379 |
185 |
0 |
| CDI |
0 |
1 |
4 |
106 |
120 |
575 |
397 |
0 |
| VCDI |
0 |
0 |
0 |
118 |
172 |
1640 |
6800 |
4064 |
|
Date: 2019-05-08:
| 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 |
12438 |
6828 |
1194 |
1063 |
308 |
194 |
75 |
0 |
| OW |
0 |
10 |
16 |
163 |
152 |
111 |
70 |
0 |
| VODI |
0 |
3 |
3 |
151 |
217 |
234 |
157 |
0 |
| ODI |
0 |
1 |
0 |
53 |
110 |
332 |
392 |
0 |
| CDI |
0 |
0 |
0 |
52 |
98 |
548 |
604 |
0 |
| VCDI |
0 |
0 |
0 |
115 |
137 |
1004 |
7747 |
3579 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12438 |
6819 |
1177 |
898 |
312 |
266 |
119 |
0 |
| OW |
0 |
20 |
24 |
148 |
95 |
121 |
109 |
0 |
| VODI |
0 |
3 |
10 |
199 |
192 |
218 |
254 |
0 |
| ODI |
0 |
0 |
2 |
113 |
132 |
271 |
289 |
0 |
| CDI |
0 |
0 |
0 |
89 |
99 |
426 |
636 |
0 |
| VCDI |
0 |
0 |
0 |
150 |
192 |
1121 |
7638 |
3579 |
|
Date: 2019-05-10:
| 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 |
13110 |
6779 |
1040 |
826 |
243 |
139 |
83 |
0 |
| OW |
0 |
7 |
56 |
195 |
165 |
138 |
52 |
0 |
| VODI |
0 |
3 |
31 |
142 |
132 |
237 |
230 |
0 |
| ODI |
0 |
0 |
14 |
61 |
102 |
238 |
497 |
0 |
| CDI |
0 |
0 |
10 |
84 |
137 |
189 |
850 |
0 |
| VCDI |
0 |
0 |
45 |
54 |
100 |
312 |
7234 |
4624 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13110 |
6761 |
1000 |
665 |
244 |
238 |
137 |
0 |
| OW |
0 |
24 |
53 |
145 |
97 |
72 |
159 |
0 |
| VODI |
0 |
4 |
59 |
198 |
126 |
188 |
269 |
0 |
| ODI |
0 |
0 |
14 |
162 |
109 |
220 |
371 |
0 |
| CDI |
0 |
0 |
15 |
109 |
160 |
193 |
731 |
2 |
| VCDI |
0 |
0 |
55 |
83 |
143 |
342 |
7279 |
4622 |
|
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