Validation of sea ice concentration
Bulletin date: 2020-07-23
Model vs. observations, sea ice class contingency tables
Date: 2020-07-17:
| 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 |
20101 |
6273 |
2313 |
809 |
467 |
178 |
44 |
0 |
| OW |
0 |
0 |
82 |
163 |
143 |
133 |
97 |
0 |
| VODI |
0 |
0 |
19 |
124 |
173 |
236 |
271 |
0 |
| ODI |
0 |
0 |
0 |
53 |
66 |
233 |
833 |
0 |
| CDI |
0 |
0 |
1 |
67 |
73 |
318 |
2530 |
1907 |
| VCDI |
0 |
0 |
0 |
9 |
4 |
9 |
150 |
280 |
|
...date precedes bulletin
|
Date: 2020-07-21:
| 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 |
20133 |
6301 |
2632 |
736 |
325 |
202 |
35 |
0 |
| OW |
0 |
0 |
94 |
175 |
127 |
66 |
52 |
0 |
| VODI |
0 |
0 |
21 |
128 |
162 |
153 |
156 |
0 |
| ODI |
0 |
0 |
2 |
25 |
137 |
240 |
787 |
6 |
| CDI |
0 |
0 |
1 |
3 |
55 |
69 |
2459 |
2819 |
| VCDI |
0 |
0 |
0 |
0 |
14 |
1 |
28 |
15 |
|
...date precedes bulletin
|
Date: 2020-07-23:
| 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 |
20578 |
6192 |
2435 |
660 |
387 |
172 |
20 |
0 |
| OW |
0 |
2 |
71 |
152 |
146 |
92 |
59 |
0 |
| VODI |
0 |
0 |
10 |
73 |
167 |
188 |
211 |
0 |
| ODI |
0 |
0 |
0 |
24 |
84 |
217 |
921 |
7 |
| CDI |
0 |
0 |
1 |
2 |
78 |
81 |
2227 |
2861 |
| VCDI |
0 |
0 |
0 |
0 |
13 |
1 |
27 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20578 |
6194 |
2430 |
687 |
412 |
187 |
28 |
0 |
| OW |
0 |
0 |
71 |
130 |
128 |
78 |
57 |
0 |
| VODI |
0 |
0 |
15 |
64 |
158 |
183 |
233 |
0 |
| ODI |
0 |
0 |
0 |
22 |
78 |
218 |
1002 |
10 |
| CDI |
0 |
0 |
0 |
8 |
85 |
84 |
2109 |
2852 |
| VCDI |
0 |
0 |
1 |
0 |
14 |
1 |
36 |
6 |
|
Date: 2020-07-27:
| 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 |
21175 |
6037 |
2385 |
665 |
245 |
127 |
64 |
0 |
| OW |
0 |
0 |
56 |
197 |
70 |
31 |
80 |
0 |
| VODI |
0 |
0 |
19 |
108 |
142 |
107 |
249 |
1 |
| ODI |
0 |
0 |
1 |
17 |
116 |
159 |
1198 |
13 |
| CDI |
0 |
0 |
0 |
7 |
44 |
31 |
2460 |
2321 |
| VCDI |
0 |
0 |
0 |
2 |
2 |
1 |
29 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21175 |
6037 |
2361 |
728 |
263 |
130 |
95 |
0 |
| OW |
0 |
0 |
66 |
138 |
78 |
40 |
127 |
0 |
| VODI |
0 |
0 |
31 |
96 |
118 |
115 |
449 |
0 |
| ODI |
0 |
0 |
3 |
19 |
74 |
118 |
1418 |
173 |
| CDI |
0 |
0 |
0 |
11 |
80 |
51 |
1953 |
2162 |
| VCDI |
0 |
0 |
0 |
4 |
6 |
2 |
38 |
0 |
|
Date: 2020-07-29:
| 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 |
21187 |
6051 |
2491 |
637 |
313 |
155 |
47 |
0 |
| OW |
0 |
0 |
70 |
123 |
125 |
100 |
81 |
0 |
| VODI |
0 |
0 |
30 |
49 |
131 |
159 |
335 |
0 |
| ODI |
0 |
0 |
6 |
22 |
109 |
140 |
1317 |
0 |
| CDI |
0 |
0 |
0 |
7 |
41 |
28 |
2302 |
2081 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
0 |
21 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21187 |
6051 |
2455 |
656 |
341 |
176 |
54 |
0 |
| OW |
0 |
0 |
89 |
87 |
98 |
85 |
130 |
0 |
| VODI |
0 |
0 |
45 |
61 |
129 |
147 |
524 |
0 |
| ODI |
0 |
0 |
7 |
23 |
72 |
129 |
1434 |
231 |
| CDI |
0 |
0 |
1 |
9 |
77 |
44 |
1939 |
1850 |
| VCDI |
0 |
0 |
0 |
2 |
3 |
1 |
22 |
0 |
|
Date: 2020-07-31:
| 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 |
21159 |
6177 |
2457 |
687 |
378 |
83 |
47 |
0 |
| OW |
0 |
0 |
69 |
124 |
135 |
90 |
126 |
0 |
| VODI |
0 |
0 |
29 |
46 |
119 |
130 |
462 |
0 |
| ODI |
0 |
0 |
2 |
46 |
62 |
113 |
1525 |
1 |
| CDI |
0 |
0 |
0 |
11 |
34 |
28 |
1947 |
2059 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
13 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21159 |
6177 |
2439 |
706 |
417 |
81 |
79 |
0 |
| OW |
0 |
0 |
76 |
87 |
96 |
92 |
204 |
0 |
| VODI |
0 |
0 |
40 |
60 |
108 |
120 |
618 |
0 |
| ODI |
0 |
0 |
1 |
40 |
53 |
91 |
1420 |
286 |
| CDI |
0 |
0 |
1 |
20 |
50 |
60 |
1783 |
1774 |
| VCDI |
0 |
0 |
0 |
1 |
4 |
0 |
16 |
0 |
|
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