Validation of sea ice concentration
Bulletin date: 2022-07-28
Model vs. observations, sea ice class contingency tables
Date: 2022-07-22:
| 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 |
19708 |
7845 |
1903 |
678 |
177 |
120 |
75 |
0 |
| OW |
0 |
4 |
108 |
139 |
63 |
35 |
48 |
0 |
| VODI |
0 |
0 |
46 |
143 |
101 |
84 |
143 |
0 |
| ODI |
0 |
0 |
10 |
56 |
114 |
118 |
485 |
1 |
| CDI |
0 |
0 |
2 |
76 |
84 |
184 |
3305 |
1239 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
267 |
798 |
|
...date precedes bulletin
|
Date: 2022-07-26:
| 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 |
20085 |
7932 |
1712 |
710 |
234 |
149 |
20 |
0 |
| OW |
0 |
1 |
60 |
148 |
74 |
34 |
31 |
0 |
| VODI |
0 |
0 |
29 |
115 |
148 |
109 |
82 |
0 |
| ODI |
0 |
0 |
1 |
57 |
100 |
187 |
407 |
0 |
| CDI |
0 |
0 |
0 |
50 |
76 |
141 |
3002 |
1962 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
7 |
226 |
268 |
|
...date precedes bulletin
|
Date: 2022-07-28:
| 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 |
19505 |
8783 |
1813 |
534 |
162 |
55 |
29 |
0 |
| OW |
0 |
13 |
103 |
110 |
62 |
22 |
37 |
0 |
| VODI |
0 |
0 |
58 |
96 |
120 |
82 |
124 |
0 |
| ODI |
0 |
0 |
25 |
31 |
120 |
132 |
460 |
0 |
| CDI |
0 |
0 |
12 |
26 |
51 |
130 |
3004 |
2032 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
7 |
117 |
301 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19505 |
8771 |
1834 |
552 |
170 |
59 |
31 |
0 |
| OW |
0 |
21 |
83 |
96 |
60 |
25 |
37 |
0 |
| VODI |
0 |
4 |
56 |
86 |
111 |
84 |
131 |
0 |
| ODI |
0 |
0 |
25 |
33 |
112 |
116 |
428 |
0 |
| CDI |
0 |
0 |
13 |
29 |
61 |
135 |
3047 |
2186 |
| VCDI |
0 |
0 |
0 |
1 |
4 |
9 |
97 |
147 |
|
Date: 2022-08-01:
| 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 |
19606 |
8538 |
2224 |
318 |
114 |
136 |
77 |
0 |
| OW |
0 |
1 |
92 |
89 |
62 |
65 |
36 |
0 |
| VODI |
0 |
0 |
22 |
44 |
117 |
153 |
153 |
0 |
| ODI |
0 |
0 |
0 |
5 |
60 |
121 |
562 |
114 |
| CDI |
0 |
0 |
0 |
4 |
24 |
47 |
2180 |
2553 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
12 |
231 |
398 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19606 |
8537 |
2220 |
343 |
127 |
144 |
85 |
0 |
| OW |
0 |
2 |
75 |
60 |
49 |
72 |
75 |
0 |
| VODI |
0 |
0 |
34 |
30 |
84 |
98 |
199 |
0 |
| ODI |
0 |
0 |
8 |
19 |
47 |
97 |
444 |
59 |
| CDI |
0 |
0 |
1 |
8 |
69 |
111 |
2192 |
2702 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
12 |
244 |
304 |
|
Date: 2022-08-03:
| 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 |
19207 |
9200 |
2132 |
257 |
120 |
145 |
59 |
0 |
| OW |
0 |
1 |
84 |
73 |
63 |
59 |
33 |
0 |
| VODI |
0 |
0 |
20 |
78 |
116 |
145 |
142 |
0 |
| ODI |
0 |
0 |
1 |
8 |
63 |
115 |
585 |
145 |
| CDI |
0 |
0 |
0 |
8 |
25 |
66 |
2596 |
1809 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
6 |
443 |
346 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19207 |
9200 |
2136 |
260 |
131 |
148 |
66 |
0 |
| OW |
0 |
1 |
73 |
69 |
73 |
73 |
62 |
0 |
| VODI |
0 |
0 |
20 |
61 |
67 |
99 |
192 |
0 |
| ODI |
0 |
0 |
6 |
18 |
48 |
89 |
514 |
40 |
| CDI |
0 |
0 |
2 |
16 |
67 |
123 |
2685 |
1977 |
| VCDI |
0 |
0 |
0 |
0 |
10 |
4 |
339 |
283 |
|
Date: 2022-08-05:
| 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 |
19954 |
8806 |
1803 |
271 |
173 |
126 |
36 |
0 |
| OW |
0 |
1 |
93 |
75 |
68 |
59 |
45 |
0 |
| VODI |
0 |
0 |
39 |
76 |
102 |
136 |
151 |
0 |
| ODI |
0 |
0 |
0 |
9 |
58 |
89 |
603 |
205 |
| CDI |
0 |
0 |
0 |
9 |
32 |
61 |
2361 |
1665 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
13 |
630 |
409 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19954 |
8807 |
1845 |
281 |
189 |
156 |
54 |
0 |
| OW |
0 |
0 |
66 |
65 |
61 |
60 |
69 |
0 |
| VODI |
0 |
0 |
23 |
58 |
64 |
83 |
227 |
0 |
| ODI |
0 |
0 |
1 |
24 |
43 |
71 |
576 |
56 |
| CDI |
0 |
0 |
0 |
12 |
75 |
103 |
2684 |
1961 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
11 |
216 |
262 |
|
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