Validation of sea ice concentration
Bulletin date: 2020-08-20
Model vs. observations, sea ice class contingency tables
Date: 2020-08-14:
| 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 |
22865 |
6213 |
1650 |
605 |
322 |
139 |
48 |
0 |
| OW |
0 |
1 |
69 |
146 |
174 |
120 |
75 |
0 |
| VODI |
0 |
0 |
18 |
120 |
200 |
341 |
299 |
0 |
| ODI |
0 |
0 |
4 |
35 |
75 |
490 |
1856 |
183 |
| CDI |
0 |
0 |
2 |
4 |
8 |
34 |
1138 |
906 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
6 |
8 |
0 |
|
...date precedes bulletin
|
Date: 2020-08-18:
| 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 |
24156 |
6315 |
787 |
687 |
202 |
37 |
10 |
0 |
| OW |
0 |
6 |
55 |
162 |
176 |
50 |
25 |
0 |
| VODI |
0 |
0 |
16 |
179 |
317 |
274 |
162 |
0 |
| ODI |
0 |
0 |
3 |
46 |
158 |
375 |
1670 |
46 |
| CDI |
0 |
0 |
0 |
3 |
10 |
82 |
1126 |
967 |
| VCDI |
0 |
0 |
0 |
7 |
0 |
3 |
1 |
46 |
|
...date precedes bulletin
|
Date: 2020-08-20:
| 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 |
24346 |
6259 |
832 |
585 |
202 |
41 |
20 |
0 |
| OW |
0 |
6 |
99 |
142 |
177 |
95 |
15 |
0 |
| VODI |
0 |
0 |
23 |
172 |
371 |
273 |
169 |
0 |
| ODI |
0 |
0 |
3 |
36 |
171 |
372 |
1652 |
65 |
| CDI |
0 |
0 |
0 |
1 |
7 |
63 |
1137 |
804 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
2 |
1 |
11 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24346 |
6258 |
829 |
614 |
240 |
54 |
22 |
0 |
| OW |
0 |
7 |
95 |
124 |
168 |
76 |
20 |
0 |
| VODI |
0 |
0 |
29 |
159 |
348 |
321 |
257 |
0 |
| ODI |
0 |
0 |
4 |
36 |
165 |
320 |
1595 |
65 |
| CDI |
0 |
0 |
0 |
3 |
7 |
73 |
1077 |
704 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
2 |
23 |
111 |
|
Date: 2020-08-24:
| 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 |
23798 |
6804 |
1113 |
377 |
175 |
41 |
8 |
0 |
| OW |
0 |
8 |
113 |
116 |
180 |
51 |
15 |
0 |
| VODI |
0 |
0 |
34 |
162 |
379 |
286 |
66 |
0 |
| ODI |
0 |
0 |
5 |
36 |
147 |
544 |
1024 |
14 |
| CDI |
0 |
0 |
0 |
3 |
11 |
103 |
1579 |
958 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
7 |
2 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23798 |
6802 |
1102 |
389 |
276 |
69 |
28 |
0 |
| OW |
0 |
10 |
122 |
100 |
161 |
93 |
33 |
0 |
| VODI |
0 |
0 |
34 |
174 |
313 |
348 |
380 |
0 |
| ODI |
0 |
0 |
7 |
29 |
135 |
387 |
1440 |
215 |
| CDI |
0 |
0 |
0 |
2 |
7 |
128 |
811 |
746 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
7 |
2 |
11 |
|
Date: 2020-08-26:
| 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 |
24290 |
6307 |
915 |
436 |
307 |
80 |
3 |
0 |
| OW |
0 |
2 |
94 |
74 |
261 |
102 |
10 |
0 |
| VODI |
0 |
0 |
38 |
103 |
383 |
332 |
68 |
0 |
| ODI |
0 |
0 |
3 |
22 |
153 |
536 |
998 |
11 |
| CDI |
0 |
0 |
0 |
1 |
4 |
97 |
1571 |
949 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
3 |
1 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24290 |
6303 |
905 |
420 |
385 |
115 |
13 |
0 |
| OW |
0 |
6 |
92 |
93 |
232 |
112 |
25 |
0 |
| VODI |
0 |
0 |
47 |
103 |
354 |
447 |
372 |
0 |
| ODI |
0 |
0 |
6 |
19 |
128 |
335 |
1447 |
290 |
| CDI |
0 |
0 |
0 |
1 |
9 |
138 |
793 |
670 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
3 |
1 |
0 |
|
Date: 2020-08-28:
| 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 |
24290 |
6379 |
821 |
631 |
159 |
42 |
6 |
0 |
| OW |
0 |
50 |
75 |
96 |
268 |
83 |
8 |
0 |
| VODI |
0 |
3 |
42 |
89 |
411 |
271 |
109 |
0 |
| ODI |
0 |
0 |
3 |
22 |
211 |
396 |
1084 |
8 |
| CDI |
0 |
0 |
0 |
1 |
49 |
130 |
1508 |
905 |
| 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 |
24290 |
6386 |
819 |
628 |
224 |
78 |
25 |
0 |
| OW |
0 |
37 |
64 |
104 |
249 |
85 |
43 |
0 |
| VODI |
0 |
9 |
50 |
83 |
375 |
331 |
437 |
0 |
| ODI |
0 |
0 |
8 |
22 |
217 |
324 |
1456 |
260 |
| CDI |
0 |
0 |
0 |
2 |
33 |
104 |
754 |
653 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
0 |
5 |
0 |
|
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