Validation of sea ice concentration
Bulletin date: 2018-07-26
Model vs. observations, sea ice class contingency tables
Date: 2018-07-20:
| 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 |
18916 |
7338 |
1697 |
1512 |
1171 |
238 |
120 |
18 |
| OW |
0 |
0 |
10 |
142 |
503 |
253 |
70 |
5 |
| VODI |
0 |
0 |
0 |
63 |
303 |
333 |
73 |
15 |
| ODI |
0 |
0 |
0 |
5 |
66 |
469 |
182 |
30 |
| CDI |
0 |
0 |
0 |
0 |
1 |
344 |
1793 |
1252 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
8 |
1229 |
|
...date precedes bulletin
|
Date: 2018-07-24:
| 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 |
19388 |
7590 |
1946 |
1345 |
1025 |
103 |
104 |
18 |
| OW |
0 |
0 |
16 |
103 |
272 |
86 |
59 |
0 |
| VODI |
0 |
0 |
2 |
88 |
323 |
154 |
72 |
10 |
| ODI |
0 |
0 |
0 |
13 |
126 |
431 |
144 |
37 |
| CDI |
0 |
0 |
6 |
9 |
11 |
148 |
1756 |
1293 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
121 |
1360 |
|
...date precedes bulletin
|
Date: 2018-07-26:
| 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 |
19253 |
7777 |
2315 |
1179 |
862 |
125 |
121 |
18 |
| OW |
0 |
0 |
31 |
100 |
319 |
69 |
76 |
0 |
| VODI |
0 |
0 |
4 |
56 |
324 |
148 |
84 |
2 |
| ODI |
0 |
0 |
2 |
14 |
93 |
380 |
197 |
46 |
| CDI |
0 |
0 |
6 |
2 |
8 |
163 |
1729 |
1475 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
32 |
1149 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19253 |
7777 |
2299 |
1179 |
890 |
129 |
129 |
18 |
| OW |
0 |
0 |
45 |
97 |
271 |
59 |
69 |
0 |
| VODI |
0 |
0 |
6 |
63 |
332 |
136 |
81 |
5 |
| ODI |
0 |
0 |
1 |
10 |
104 |
406 |
189 |
48 |
| CDI |
0 |
0 |
7 |
2 |
9 |
155 |
1717 |
1423 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
54 |
1196 |
|
Date: 2018-07-30:
| 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 |
20661 |
7739 |
2680 |
433 |
153 |
32 |
52 |
0 |
| OW |
0 |
0 |
60 |
171 |
160 |
64 |
28 |
0 |
| VODI |
0 |
0 |
10 |
148 |
256 |
132 |
30 |
0 |
| ODI |
0 |
0 |
1 |
30 |
142 |
340 |
236 |
7 |
| CDI |
0 |
0 |
0 |
0 |
11 |
191 |
1606 |
664 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
14 |
621 |
1483 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20661 |
7721 |
2688 |
424 |
200 |
68 |
67 |
0 |
| OW |
0 |
18 |
50 |
215 |
171 |
81 |
27 |
0 |
| VODI |
0 |
0 |
12 |
126 |
228 |
184 |
55 |
0 |
| ODI |
0 |
0 |
1 |
16 |
112 |
337 |
454 |
10 |
| CDI |
0 |
0 |
0 |
1 |
11 |
94 |
1957 |
2087 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
9 |
13 |
57 |
|
Date: 2018-08-01:
| 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 |
21186 |
7501 |
2088 |
787 |
255 |
42 |
54 |
0 |
| OW |
0 |
4 |
14 |
194 |
215 |
53 |
29 |
0 |
| VODI |
0 |
4 |
1 |
80 |
298 |
177 |
32 |
0 |
| ODI |
0 |
1 |
0 |
16 |
107 |
317 |
257 |
0 |
| CDI |
0 |
0 |
0 |
0 |
10 |
149 |
1874 |
684 |
| VCDI |
0 |
0 |
0 |
0 |
16 |
7 |
597 |
1110 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21186 |
7499 |
2083 |
746 |
296 |
79 |
70 |
0 |
| OW |
0 |
6 |
19 |
230 |
183 |
71 |
24 |
0 |
| VODI |
0 |
4 |
1 |
89 |
298 |
196 |
65 |
0 |
| ODI |
0 |
1 |
0 |
12 |
105 |
300 |
531 |
0 |
| CDI |
0 |
0 |
0 |
0 |
13 |
95 |
2140 |
1790 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
4 |
13 |
4 |
|
Date: 2018-08-03:
| 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 |
21442 |
7600 |
1592 |
847 |
522 |
45 |
55 |
0 |
| OW |
0 |
28 |
32 |
116 |
253 |
74 |
34 |
0 |
| VODI |
0 |
4 |
11 |
53 |
289 |
194 |
81 |
0 |
| ODI |
0 |
1 |
1 |
13 |
142 |
234 |
391 |
0 |
| CDI |
0 |
0 |
0 |
0 |
20 |
112 |
1752 |
1060 |
| VCDI |
0 |
0 |
0 |
0 |
10 |
6 |
455 |
690 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21442 |
7595 |
1587 |
831 |
509 |
72 |
75 |
0 |
| OW |
0 |
30 |
33 |
125 |
232 |
65 |
24 |
0 |
| VODI |
0 |
7 |
16 |
57 |
347 |
205 |
73 |
0 |
| ODI |
0 |
1 |
0 |
16 |
130 |
255 |
559 |
0 |
| CDI |
0 |
0 |
0 |
0 |
13 |
41 |
1697 |
1710 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
27 |
340 |
40 |
|
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