Validation of sea ice concentration
Bulletin date: 2023-04-27
Model vs. observations, sea ice class contingency tables
Date: 2023-04-21:
| 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 |
12793 |
6059 |
945 |
467 |
211 |
99 |
18 |
0 |
| OW |
0 |
67 |
196 |
101 |
65 |
100 |
20 |
0 |
| VODI |
0 |
23 |
141 |
93 |
104 |
124 |
76 |
0 |
| ODI |
0 |
0 |
64 |
72 |
100 |
153 |
187 |
32 |
| CDI |
0 |
0 |
47 |
69 |
122 |
238 |
778 |
111 |
| VCDI |
0 |
0 |
28 |
69 |
110 |
364 |
8300 |
5613 |
|
...date precedes bulletin
|
Date: 2023-04-25:
| 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 |
12278 |
6147 |
1293 |
566 |
323 |
109 |
60 |
0 |
| OW |
0 |
4 |
127 |
102 |
111 |
75 |
70 |
0 |
| VODI |
0 |
0 |
92 |
138 |
111 |
132 |
160 |
0 |
| ODI |
0 |
0 |
44 |
97 |
92 |
141 |
253 |
0 |
| CDI |
0 |
0 |
27 |
96 |
138 |
188 |
942 |
5 |
| VCDI |
0 |
0 |
20 |
139 |
185 |
363 |
9189 |
4342 |
|
...date precedes bulletin
|
Date: 2023-04-27:
| 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 |
12271 |
6283 |
1200 |
711 |
194 |
86 |
62 |
0 |
| OW |
0 |
28 |
139 |
150 |
89 |
45 |
52 |
0 |
| VODI |
0 |
8 |
92 |
186 |
90 |
101 |
163 |
0 |
| ODI |
0 |
1 |
52 |
89 |
100 |
110 |
233 |
0 |
| CDI |
0 |
0 |
83 |
112 |
117 |
178 |
933 |
0 |
| VCDI |
0 |
0 |
39 |
227 |
210 |
580 |
9522 |
3623 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12271 |
6282 |
1239 |
709 |
204 |
91 |
69 |
0 |
| OW |
0 |
29 |
107 |
180 |
72 |
38 |
52 |
0 |
| VODI |
0 |
8 |
91 |
161 |
92 |
100 |
147 |
0 |
| ODI |
0 |
1 |
48 |
85 |
112 |
106 |
247 |
0 |
| CDI |
0 |
0 |
90 |
109 |
101 |
173 |
938 |
0 |
| VCDI |
0 |
0 |
30 |
231 |
219 |
592 |
9512 |
3623 |
|
Date: 2023-05-01:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2023-05-03:
| 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 |
12830 |
6593 |
870 |
675 |
108 |
37 |
37 |
0 |
| OW |
0 |
58 |
61 |
153 |
80 |
37 |
29 |
0 |
| VODI |
0 |
48 |
25 |
124 |
87 |
81 |
88 |
0 |
| ODI |
0 |
24 |
12 |
80 |
95 |
108 |
174 |
1 |
| CDI |
0 |
29 |
11 |
75 |
152 |
548 |
1352 |
11 |
| VCDI |
0 |
29 |
12 |
33 |
77 |
744 |
8267 |
4304 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12830 |
6506 |
742 |
578 |
95 |
38 |
66 |
0 |
| OW |
0 |
61 |
90 |
158 |
84 |
51 |
66 |
0 |
| VODI |
0 |
69 |
72 |
131 |
85 |
77 |
136 |
0 |
| ODI |
0 |
30 |
47 |
95 |
81 |
96 |
180 |
0 |
| CDI |
0 |
40 |
19 |
101 |
100 |
255 |
827 |
11 |
| VCDI |
0 |
75 |
21 |
77 |
154 |
1038 |
8672 |
4305 |
|
Date: 2023-05-05:
| 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 |
12575 |
6540 |
1245 |
454 |
201 |
61 |
42 |
0 |
| OW |
0 |
21 |
104 |
91 |
98 |
80 |
50 |
0 |
| VODI |
0 |
13 |
24 |
53 |
73 |
118 |
129 |
0 |
| ODI |
0 |
9 |
20 |
26 |
89 |
157 |
229 |
7 |
| CDI |
0 |
9 |
17 |
43 |
94 |
396 |
1753 |
27 |
| VCDI |
0 |
1 |
19 |
56 |
91 |
362 |
8025 |
4757 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12575 |
6461 |
1139 |
348 |
143 |
52 |
86 |
0 |
| OW |
0 |
35 |
100 |
123 |
99 |
63 |
62 |
0 |
| VODI |
0 |
35 |
83 |
81 |
99 |
127 |
180 |
0 |
| ODI |
0 |
17 |
21 |
29 |
61 |
122 |
214 |
4 |
| CDI |
0 |
18 |
32 |
41 |
104 |
316 |
1044 |
14 |
| VCDI |
0 |
27 |
54 |
101 |
140 |
494 |
8642 |
4773 |
|
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