Validation of sea ice concentration
Bulletin date: 2024-03-07
Model vs. observations, sea ice class contingency tables
Date: 2024-03-01:
| 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 |
13195 |
6390 |
527 |
199 |
32 |
2 |
4 |
0 |
| OW |
0 |
173 |
241 |
205 |
71 |
19 |
12 |
0 |
| VODI |
0 |
108 |
220 |
255 |
128 |
42 |
45 |
0 |
| ODI |
0 |
49 |
107 |
200 |
101 |
95 |
120 |
0 |
| CDI |
0 |
25 |
81 |
207 |
138 |
138 |
433 |
7 |
| VCDI |
0 |
8 |
155 |
369 |
358 |
731 |
8944 |
4025 |
|
...date precedes bulletin
|
Date: 2024-03-05:
| 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 |
12825 |
6209 |
901 |
471 |
140 |
10 |
20 |
0 |
| OW |
0 |
49 |
138 |
197 |
133 |
50 |
17 |
0 |
| VODI |
0 |
24 |
80 |
204 |
199 |
159 |
74 |
0 |
| ODI |
0 |
3 |
43 |
161 |
144 |
229 |
150 |
0 |
| CDI |
0 |
1 |
30 |
182 |
206 |
362 |
765 |
0 |
| VCDI |
0 |
1 |
13 |
102 |
214 |
1080 |
8610 |
3963 |
|
...date precedes bulletin
|
Date: 2024-03-07:
| 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 |
12808 |
6255 |
899 |
266 |
128 |
40 |
10 |
0 |
| OW |
0 |
53 |
202 |
159 |
111 |
64 |
19 |
0 |
| VODI |
0 |
16 |
136 |
174 |
183 |
199 |
54 |
0 |
| ODI |
0 |
5 |
57 |
134 |
161 |
225 |
189 |
0 |
| CDI |
0 |
1 |
48 |
81 |
228 |
379 |
924 |
79 |
| VCDI |
0 |
1 |
38 |
70 |
150 |
392 |
6923 |
6298 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12808 |
6250 |
911 |
267 |
126 |
39 |
10 |
0 |
| OW |
0 |
59 |
194 |
153 |
104 |
58 |
15 |
0 |
| VODI |
0 |
15 |
131 |
182 |
174 |
188 |
52 |
0 |
| ODI |
0 |
3 |
55 |
117 |
170 |
237 |
171 |
0 |
| CDI |
0 |
2 |
48 |
89 |
228 |
389 |
852 |
81 |
| VCDI |
0 |
2 |
41 |
76 |
159 |
388 |
7019 |
6296 |
|
Date: 2024-03-11:
| 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 |
12554 |
5895 |
968 |
474 |
190 |
84 |
15 |
0 |
| OW |
2 |
33 |
191 |
139 |
117 |
83 |
25 |
0 |
| VODI |
0 |
6 |
93 |
155 |
191 |
162 |
73 |
0 |
| ODI |
0 |
0 |
21 |
104 |
178 |
285 |
181 |
0 |
| CDI |
0 |
0 |
11 |
50 |
150 |
522 |
1078 |
1 |
| VCDI |
0 |
0 |
19 |
64 |
82 |
359 |
7533 |
6071 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12556 |
5869 |
890 |
448 |
195 |
124 |
26 |
0 |
| OW |
0 |
54 |
172 |
119 |
74 |
94 |
48 |
0 |
| VODI |
0 |
8 |
128 |
136 |
182 |
165 |
146 |
0 |
| ODI |
0 |
3 |
55 |
90 |
152 |
216 |
202 |
0 |
| CDI |
0 |
0 |
32 |
101 |
177 |
412 |
856 |
0 |
| VCDI |
0 |
0 |
26 |
92 |
128 |
484 |
7627 |
6072 |
|
Date: 2024-03-13:
| 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 |
12602 |
5892 |
639 |
391 |
241 |
165 |
17 |
0 |
| OW |
0 |
53 |
188 |
90 |
78 |
100 |
20 |
0 |
| VODI |
0 |
7 |
106 |
160 |
112 |
168 |
86 |
0 |
| ODI |
0 |
0 |
36 |
90 |
114 |
190 |
163 |
0 |
| CDI |
0 |
0 |
11 |
69 |
153 |
408 |
768 |
28 |
| VCDI |
0 |
0 |
5 |
46 |
84 |
517 |
8462 |
5900 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12602 |
5816 |
578 |
391 |
261 |
243 |
38 |
0 |
| OW |
0 |
113 |
168 |
81 |
62 |
91 |
66 |
0 |
| VODI |
0 |
17 |
163 |
133 |
96 |
130 |
171 |
0 |
| ODI |
0 |
5 |
37 |
115 |
105 |
196 |
217 |
0 |
| CDI |
0 |
1 |
29 |
66 |
166 |
308 |
759 |
6 |
| VCDI |
0 |
0 |
10 |
60 |
92 |
580 |
8265 |
5922 |
|
Date: 2024-03-15:
| 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 |
12464 |
5691 |
767 |
406 |
210 |
133 |
5 |
0 |
| OW |
0 |
83 |
164 |
111 |
107 |
103 |
19 |
0 |
| VODI |
0 |
20 |
116 |
116 |
155 |
160 |
46 |
0 |
| ODI |
0 |
5 |
47 |
96 |
103 |
190 |
116 |
0 |
| CDI |
0 |
5 |
25 |
86 |
123 |
274 |
315 |
33 |
| VCDI |
0 |
2 |
13 |
124 |
191 |
768 |
7920 |
6847 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12464 |
5664 |
793 |
419 |
246 |
161 |
17 |
0 |
| OW |
0 |
92 |
128 |
96 |
100 |
126 |
43 |
0 |
| VODI |
0 |
33 |
126 |
134 |
138 |
147 |
117 |
0 |
| ODI |
0 |
8 |
47 |
86 |
125 |
189 |
141 |
3 |
| CDI |
0 |
3 |
16 |
99 |
146 |
384 |
483 |
55 |
| VCDI |
0 |
6 |
22 |
105 |
134 |
621 |
7620 |
6822 |
|
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