Validation of sea ice concentration
Bulletin date: 2022-08-25
Model vs. observations, sea ice class contingency tables
Date: 2022-08-19:
| 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 |
21888 |
8020 |
964 |
261 |
121 |
51 |
7 |
0 |
| OW |
0 |
48 |
78 |
95 |
73 |
13 |
12 |
0 |
| VODI |
0 |
12 |
83 |
107 |
125 |
89 |
56 |
0 |
| ODI |
0 |
0 |
24 |
62 |
73 |
138 |
272 |
0 |
| CDI |
0 |
0 |
0 |
31 |
86 |
127 |
2063 |
961 |
| VCDI |
0 |
0 |
5 |
7 |
3 |
25 |
1113 |
1066 |
|
...date precedes bulletin
|
Date: 2022-08-23:
| 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 |
24290 |
5583 |
831 |
373 |
185 |
20 |
4 |
0 |
| OW |
0 |
18 |
71 |
116 |
86 |
14 |
5 |
0 |
| VODI |
0 |
0 |
31 |
124 |
114 |
74 |
33 |
0 |
| ODI |
0 |
0 |
3 |
48 |
116 |
250 |
217 |
0 |
| CDI |
0 |
0 |
1 |
21 |
86 |
109 |
1824 |
1105 |
| VCDI |
0 |
0 |
0 |
6 |
15 |
54 |
1291 |
1041 |
|
...date precedes bulletin
|
Date: 2022-08-25:
| 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 |
24309 |
5572 |
746 |
400 |
145 |
12 |
7 |
0 |
| OW |
0 |
22 |
35 |
146 |
94 |
18 |
8 |
0 |
| VODI |
0 |
2 |
13 |
132 |
158 |
49 |
38 |
0 |
| ODI |
0 |
0 |
1 |
40 |
168 |
232 |
173 |
0 |
| CDI |
0 |
0 |
0 |
37 |
112 |
204 |
1767 |
1058 |
| VCDI |
0 |
0 |
0 |
6 |
16 |
55 |
1262 |
1122 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24309 |
5577 |
750 |
412 |
161 |
12 |
8 |
0 |
| OW |
0 |
17 |
36 |
134 |
85 |
19 |
9 |
0 |
| VODI |
0 |
2 |
7 |
122 |
135 |
55 |
33 |
0 |
| ODI |
0 |
0 |
2 |
53 |
188 |
224 |
224 |
0 |
| CDI |
0 |
0 |
0 |
33 |
101 |
205 |
1679 |
1035 |
| VCDI |
0 |
0 |
0 |
7 |
23 |
55 |
1302 |
1145 |
|
Date: 2022-08-29:
| 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 |
24200 |
5404 |
1107 |
237 |
99 |
74 |
5 |
0 |
| OW |
0 |
0 |
80 |
91 |
80 |
46 |
16 |
0 |
| VODI |
0 |
0 |
16 |
80 |
115 |
91 |
55 |
0 |
| ODI |
0 |
0 |
0 |
19 |
108 |
261 |
522 |
0 |
| CDI |
0 |
0 |
0 |
24 |
47 |
115 |
1730 |
1125 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1 |
466 |
1945 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24200 |
5404 |
1098 |
220 |
123 |
81 |
5 |
0 |
| OW |
0 |
0 |
74 |
87 |
63 |
56 |
23 |
0 |
| VODI |
0 |
0 |
24 |
89 |
92 |
69 |
44 |
0 |
| ODI |
0 |
0 |
7 |
23 |
85 |
155 |
336 |
0 |
| CDI |
0 |
0 |
0 |
26 |
84 |
226 |
1840 |
990 |
| VCDI |
0 |
0 |
0 |
6 |
2 |
1 |
546 |
2080 |
|
Date: 2022-08-31:
| 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 |
23884 |
5632 |
1164 |
316 |
120 |
53 |
10 |
0 |
| OW |
0 |
8 |
42 |
126 |
73 |
40 |
18 |
0 |
| VODI |
0 |
2 |
27 |
78 |
133 |
65 |
55 |
0 |
| ODI |
0 |
0 |
12 |
17 |
118 |
238 |
512 |
1 |
| CDI |
0 |
0 |
0 |
51 |
89 |
154 |
1910 |
1026 |
| VCDI |
0 |
0 |
0 |
1 |
5 |
3 |
977 |
1199 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23884 |
5629 |
1147 |
281 |
117 |
53 |
5 |
0 |
| OW |
0 |
7 |
50 |
110 |
59 |
36 |
24 |
0 |
| VODI |
0 |
5 |
22 |
112 |
97 |
52 |
57 |
0 |
| ODI |
0 |
1 |
25 |
27 |
119 |
167 |
308 |
0 |
| CDI |
0 |
0 |
1 |
51 |
137 |
234 |
1938 |
897 |
| VCDI |
0 |
0 |
0 |
8 |
9 |
11 |
1150 |
1329 |
|
Date: 2022-09-02:
| 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 |
23007 |
6364 |
1343 |
322 |
138 |
42 |
19 |
0 |
| OW |
0 |
9 |
49 |
117 |
96 |
39 |
21 |
0 |
| VODI |
0 |
7 |
34 |
67 |
87 |
107 |
53 |
0 |
| ODI |
0 |
0 |
17 |
26 |
80 |
145 |
563 |
2 |
| CDI |
0 |
0 |
0 |
63 |
97 |
148 |
1934 |
1063 |
| VCDI |
0 |
0 |
0 |
1 |
4 |
3 |
913 |
1179 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23007 |
6363 |
1281 |
260 |
111 |
30 |
4 |
0 |
| OW |
0 |
12 |
68 |
128 |
66 |
32 |
24 |
0 |
| VODI |
0 |
5 |
60 |
95 |
102 |
73 |
56 |
0 |
| ODI |
0 |
0 |
34 |
38 |
91 |
115 |
333 |
0 |
| CDI |
0 |
0 |
0 |
62 |
113 |
221 |
1881 |
1049 |
| VCDI |
0 |
0 |
0 |
13 |
19 |
13 |
1205 |
1195 |
|
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