Validation of sea ice concentration
Bulletin date: 2020-08-27
Model vs. observations, sea ice class contingency tables
Date: 2020-08-21:
| 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 |
23972 |
6705 |
841 |
587 |
144 |
37 |
28 |
0 |
| OW |
0 |
6 |
106 |
165 |
166 |
112 |
25 |
0 |
| VODI |
0 |
0 |
28 |
183 |
317 |
286 |
206 |
0 |
| ODI |
0 |
0 |
3 |
35 |
179 |
345 |
1687 |
84 |
| CDI |
0 |
0 |
0 |
0 |
3 |
55 |
1058 |
784 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
7 |
2 |
3 |
|
...date precedes bulletin
|
Date: 2020-08-25:
| 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 |
24342 |
6320 |
991 |
450 |
171 |
54 |
11 |
0 |
| OW |
0 |
3 |
103 |
112 |
218 |
67 |
14 |
0 |
| VODI |
0 |
0 |
22 |
139 |
354 |
322 |
63 |
0 |
| ODI |
0 |
0 |
3 |
21 |
164 |
515 |
1052 |
17 |
| CDI |
0 |
0 |
0 |
1 |
7 |
99 |
1553 |
962 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
3 |
1 |
0 |
|
...date precedes bulletin
|
Date: 2020-08-27:
| 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 |
24219 |
6429 |
884 |
556 |
183 |
48 |
6 |
0 |
| OW |
0 |
42 |
65 |
103 |
263 |
85 |
5 |
0 |
| VODI |
0 |
3 |
42 |
104 |
407 |
289 |
89 |
0 |
| ODI |
0 |
0 |
4 |
24 |
185 |
455 |
1027 |
8 |
| CDI |
0 |
0 |
0 |
2 |
39 |
112 |
1562 |
910 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
0 |
5 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24219 |
6440 |
888 |
543 |
220 |
57 |
5 |
0 |
| OW |
0 |
33 |
58 |
109 |
261 |
75 |
12 |
0 |
| VODI |
0 |
1 |
46 |
112 |
374 |
300 |
96 |
0 |
| ODI |
0 |
0 |
3 |
22 |
184 |
421 |
1106 |
7 |
| CDI |
0 |
0 |
0 |
3 |
38 |
136 |
1470 |
911 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
0 |
5 |
0 |
|
Date: 2020-08-31:
| 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 |
23852 |
7122 |
1154 |
436 |
147 |
19 |
0 |
0 |
| OW |
0 |
6 |
92 |
164 |
177 |
82 |
6 |
0 |
| VODI |
0 |
0 |
16 |
105 |
230 |
298 |
84 |
0 |
| ODI |
0 |
0 |
0 |
24 |
107 |
482 |
1019 |
8 |
| CDI |
0 |
0 |
0 |
5 |
4 |
33 |
1598 |
877 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
0 |
10 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23852 |
7082 |
994 |
407 |
189 |
45 |
2 |
0 |
| OW |
0 |
46 |
131 |
151 |
148 |
114 |
9 |
0 |
| VODI |
0 |
0 |
129 |
131 |
184 |
289 |
110 |
0 |
| ODI |
0 |
0 |
8 |
42 |
129 |
419 |
1065 |
28 |
| CDI |
0 |
0 |
0 |
3 |
15 |
47 |
1520 |
857 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
0 |
11 |
0 |
|
Date: 2020-09-02:
| 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 |
24160 |
7104 |
964 |
456 |
202 |
18 |
2 |
0 |
| OW |
0 |
10 |
100 |
155 |
185 |
52 |
6 |
0 |
| VODI |
0 |
0 |
23 |
89 |
256 |
273 |
110 |
0 |
| ODI |
0 |
0 |
0 |
16 |
91 |
393 |
889 |
8 |
| CDI |
0 |
0 |
0 |
4 |
7 |
46 |
1746 |
782 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
1 |
9 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24160 |
6968 |
893 |
375 |
207 |
40 |
2 |
0 |
| OW |
0 |
119 |
55 |
159 |
163 |
74 |
15 |
0 |
| VODI |
0 |
27 |
124 |
115 |
203 |
221 |
150 |
3 |
| ODI |
0 |
0 |
15 |
67 |
148 |
385 |
956 |
23 |
| CDI |
0 |
0 |
0 |
4 |
20 |
62 |
1630 |
764 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
1 |
9 |
0 |
|
Date: 2020-09-04:
| 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 |
24886 |
6839 |
582 |
445 |
132 |
2 |
1 |
0 |
| OW |
0 |
71 |
100 |
181 |
168 |
33 |
11 |
0 |
| VODI |
0 |
3 |
52 |
119 |
260 |
202 |
114 |
0 |
| ODI |
0 |
0 |
2 |
36 |
91 |
370 |
708 |
2 |
| CDI |
0 |
0 |
0 |
5 |
13 |
48 |
1919 |
751 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
4 |
9 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24886 |
6657 |
429 |
411 |
154 |
8 |
2 |
0 |
| OW |
0 |
138 |
110 |
129 |
124 |
51 |
14 |
0 |
| VODI |
0 |
114 |
124 |
122 |
219 |
171 |
119 |
0 |
| ODI |
0 |
4 |
71 |
107 |
151 |
370 |
848 |
21 |
| CDI |
0 |
0 |
2 |
17 |
16 |
55 |
1771 |
732 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
4 |
8 |
0 |
|
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