Validation of sea ice concentration
Bulletin date: 2018-07-19
Model vs. observations, sea ice class contingency tables
Date: 2018-07-13:
| 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 |
18634 |
7172 |
1461 |
1441 |
719 |
221 |
141 |
25 |
| OW |
0 |
2 |
64 |
260 |
482 |
385 |
209 |
6 |
| VODI |
0 |
1 |
8 |
80 |
400 |
674 |
405 |
4 |
| ODI |
0 |
1 |
1 |
24 |
54 |
394 |
308 |
3 |
| CDI |
0 |
1 |
0 |
2 |
6 |
68 |
1495 |
539 |
| VCDI |
0 |
2 |
0 |
2 |
0 |
1 |
137 |
2327 |
|
...date precedes bulletin
|
Date: 2018-07-17:
| 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 |
18420 |
7216 |
1831 |
1469 |
1071 |
323 |
150 |
18 |
| OW |
0 |
0 |
45 |
142 |
444 |
309 |
137 |
1 |
| VODI |
0 |
0 |
11 |
67 |
350 |
355 |
139 |
11 |
| ODI |
0 |
0 |
0 |
27 |
186 |
486 |
41 |
18 |
| CDI |
0 |
0 |
0 |
1 |
10 |
632 |
1886 |
461 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
92 |
1810 |
|
...date precedes bulletin
|
Date: 2018-07-19:
| 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 |
18864 |
7301 |
1701 |
1337 |
1130 |
348 |
147 |
18 |
| OW |
0 |
0 |
37 |
119 |
435 |
277 |
143 |
2 |
| VODI |
0 |
0 |
1 |
52 |
330 |
286 |
137 |
15 |
| ODI |
0 |
0 |
0 |
9 |
99 |
320 |
276 |
35 |
| CDI |
0 |
0 |
0 |
0 |
0 |
284 |
1846 |
1212 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
10 |
1388 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18864 |
7301 |
1712 |
1325 |
1140 |
363 |
159 |
18 |
| OW |
0 |
0 |
27 |
132 |
393 |
225 |
117 |
2 |
| VODI |
0 |
0 |
0 |
46 |
356 |
286 |
150 |
17 |
| ODI |
0 |
0 |
0 |
11 |
105 |
316 |
288 |
27 |
| CDI |
0 |
0 |
0 |
3 |
0 |
325 |
1821 |
1180 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
24 |
1426 |
|
Date: 2018-07-23:
| 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 |
19414 |
7316 |
2209 |
1365 |
827 |
87 |
105 |
18 |
| OW |
0 |
0 |
31 |
110 |
233 |
84 |
58 |
0 |
| VODI |
0 |
0 |
4 |
102 |
373 |
150 |
74 |
9 |
| ODI |
0 |
0 |
0 |
33 |
215 |
439 |
116 |
20 |
| CDI |
0 |
0 |
3 |
2 |
16 |
318 |
1845 |
1001 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
131 |
1451 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19414 |
7314 |
2163 |
1381 |
932 |
124 |
135 |
18 |
| OW |
0 |
2 |
73 |
147 |
327 |
117 |
76 |
1 |
| VODI |
0 |
0 |
8 |
78 |
310 |
253 |
82 |
17 |
| ODI |
0 |
0 |
1 |
4 |
89 |
448 |
376 |
22 |
| CDI |
0 |
0 |
2 |
2 |
6 |
136 |
1651 |
1728 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
9 |
713 |
|
Date: 2018-07-25:
| 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 |
19468 |
7661 |
2051 |
1158 |
985 |
145 |
125 |
18 |
| OW |
0 |
0 |
28 |
81 |
316 |
70 |
69 |
0 |
| VODI |
0 |
0 |
3 |
54 |
329 |
156 |
72 |
3 |
| ODI |
0 |
0 |
1 |
11 |
118 |
352 |
205 |
60 |
| CDI |
0 |
0 |
6 |
7 |
8 |
162 |
1730 |
1365 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
5 |
89 |
1248 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19468 |
7659 |
2039 |
1148 |
1182 |
173 |
152 |
17 |
| OW |
0 |
2 |
35 |
116 |
301 |
130 |
61 |
3 |
| VODI |
0 |
0 |
7 |
32 |
234 |
250 |
143 |
17 |
| ODI |
0 |
0 |
8 |
15 |
38 |
301 |
680 |
35 |
| CDI |
0 |
0 |
0 |
0 |
1 |
36 |
1246 |
2364 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
8 |
258 |
|
Date: 2018-07-27:
| 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 |
19556 |
7700 |
2584 |
1064 |
578 |
81 |
104 |
17 |
| OW |
0 |
13 |
41 |
122 |
274 |
91 |
70 |
1 |
| VODI |
0 |
1 |
10 |
74 |
248 |
195 |
101 |
4 |
| ODI |
0 |
0 |
2 |
12 |
53 |
399 |
243 |
40 |
| CDI |
0 |
0 |
6 |
2 |
7 |
165 |
1675 |
1663 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
10 |
953 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19556 |
7704 |
2574 |
1155 |
808 |
178 |
139 |
14 |
| OW |
0 |
10 |
53 |
84 |
219 |
148 |
75 |
4 |
| VODI |
0 |
0 |
7 |
24 |
108 |
248 |
270 |
8 |
| ODI |
0 |
0 |
9 |
11 |
25 |
347 |
767 |
46 |
| CDI |
0 |
0 |
0 |
0 |
0 |
10 |
944 |
2585 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
8 |
21 |
|
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