Validation of sea ice concentration
Bulletin date: 2024-02-29
Model vs. observations, sea ice class contingency tables
Date: 2024-02-23:
| 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 |
12096 |
6311 |
1033 |
399 |
104 |
24 |
9 |
0 |
| OW |
0 |
60 |
171 |
165 |
81 |
43 |
9 |
0 |
| VODI |
0 |
37 |
140 |
146 |
132 |
155 |
24 |
0 |
| ODI |
0 |
19 |
96 |
105 |
105 |
221 |
77 |
0 |
| CDI |
0 |
1 |
79 |
122 |
175 |
319 |
412 |
18 |
| VCDI |
0 |
0 |
74 |
156 |
245 |
863 |
8349 |
5584 |
|
...date precedes bulletin
|
Date: 2024-02-27:
| 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 |
12367 |
6493 |
1044 |
305 |
111 |
26 |
23 |
0 |
| OW |
0 |
50 |
198 |
214 |
113 |
45 |
26 |
0 |
| VODI |
0 |
78 |
157 |
205 |
158 |
126 |
78 |
0 |
| ODI |
0 |
8 |
80 |
125 |
122 |
188 |
157 |
0 |
| CDI |
0 |
3 |
64 |
116 |
120 |
314 |
541 |
15 |
| VCDI |
0 |
0 |
141 |
201 |
159 |
597 |
8365 |
5026 |
|
...date precedes bulletin
|
Date: 2024-02-29:
| 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 |
12757 |
6611 |
689 |
255 |
46 |
9 |
10 |
0 |
| OW |
0 |
92 |
266 |
210 |
73 |
21 |
7 |
0 |
| VODI |
0 |
69 |
184 |
263 |
166 |
61 |
49 |
0 |
| ODI |
0 |
31 |
113 |
177 |
111 |
92 |
131 |
0 |
| CDI |
0 |
16 |
90 |
187 |
134 |
166 |
385 |
0 |
| VCDI |
0 |
3 |
153 |
309 |
280 |
634 |
8753 |
4556 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12757 |
6573 |
701 |
272 |
49 |
8 |
10 |
0 |
| OW |
0 |
121 |
248 |
207 |
73 |
20 |
7 |
0 |
| VODI |
0 |
73 |
185 |
249 |
160 |
58 |
57 |
0 |
| ODI |
0 |
34 |
105 |
170 |
116 |
89 |
119 |
0 |
| CDI |
0 |
18 |
89 |
179 |
121 |
167 |
353 |
0 |
| VCDI |
0 |
3 |
167 |
324 |
291 |
641 |
8789 |
4556 |
|
Date: 2024-03-04:
| 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 |
12759 |
6249 |
863 |
516 |
86 |
12 |
14 |
0 |
| OW |
0 |
51 |
157 |
254 |
100 |
34 |
14 |
0 |
| VODI |
0 |
17 |
79 |
327 |
206 |
142 |
38 |
0 |
| ODI |
0 |
4 |
21 |
179 |
171 |
273 |
121 |
2 |
| CDI |
0 |
1 |
19 |
202 |
191 |
433 |
654 |
39 |
| VCDI |
0 |
1 |
7 |
113 |
213 |
1047 |
7454 |
5096 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12759 |
6119 |
682 |
339 |
86 |
18 |
13 |
0 |
| OW |
0 |
110 |
172 |
220 |
92 |
57 |
20 |
0 |
| VODI |
0 |
45 |
127 |
300 |
128 |
111 |
52 |
0 |
| ODI |
0 |
28 |
53 |
204 |
133 |
161 |
94 |
0 |
| CDI |
0 |
17 |
65 |
199 |
154 |
295 |
406 |
30 |
| VCDI |
0 |
4 |
47 |
329 |
374 |
1299 |
7710 |
5107 |
|
Date: 2024-03-06:
| 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 |
12818 |
6132 |
1059 |
336 |
133 |
18 |
14 |
0 |
| OW |
0 |
17 |
167 |
181 |
159 |
58 |
26 |
0 |
| VODI |
0 |
2 |
85 |
164 |
223 |
197 |
74 |
0 |
| ODI |
0 |
1 |
31 |
145 |
165 |
241 |
155 |
0 |
| CDI |
0 |
0 |
19 |
105 |
215 |
399 |
834 |
4 |
| VCDI |
0 |
1 |
29 |
76 |
177 |
855 |
8403 |
4441 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12818 |
5972 |
799 |
210 |
157 |
34 |
16 |
0 |
| OW |
0 |
126 |
192 |
127 |
75 |
64 |
15 |
0 |
| VODI |
0 |
38 |
163 |
178 |
151 |
120 |
60 |
0 |
| ODI |
0 |
13 |
81 |
152 |
140 |
180 |
162 |
0 |
| CDI |
0 |
1 |
75 |
166 |
217 |
254 |
688 |
0 |
| VCDI |
0 |
3 |
80 |
174 |
332 |
1116 |
8565 |
4445 |
|
Date: 2024-03-08:
| 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 |
12845 |
6084 |
854 |
322 |
149 |
58 |
9 |
0 |
| OW |
0 |
76 |
148 |
131 |
111 |
93 |
10 |
0 |
| VODI |
0 |
35 |
144 |
181 |
144 |
230 |
75 |
0 |
| ODI |
0 |
3 |
74 |
121 |
166 |
258 |
153 |
3 |
| CDI |
0 |
2 |
26 |
107 |
222 |
376 |
975 |
83 |
| VCDI |
0 |
4 |
34 |
59 |
136 |
363 |
7126 |
6169 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12845 |
5928 |
710 |
234 |
164 |
92 |
7 |
0 |
| OW |
0 |
144 |
182 |
105 |
66 |
98 |
16 |
0 |
| VODI |
0 |
57 |
148 |
142 |
83 |
172 |
72 |
0 |
| ODI |
0 |
33 |
86 |
130 |
110 |
194 |
170 |
0 |
| CDI |
0 |
34 |
69 |
172 |
255 |
298 |
663 |
38 |
| VCDI |
0 |
8 |
85 |
138 |
250 |
524 |
7420 |
6217 |
|
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