Validation of sea ice concentration
Bulletin date: 2024-10-03
Model vs. observations, sea ice class contingency tables
Date: 2024-09-27:
| 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 |
111121 |
19568 |
1945 |
711 |
159 |
11 |
0 |
0 |
| OW |
0 |
402 |
385 |
482 |
159 |
91 |
0 |
0 |
| VODI |
0 |
93 |
215 |
509 |
360 |
202 |
21 |
0 |
| ODI |
0 |
41 |
84 |
239 |
218 |
207 |
122 |
0 |
| CDI |
0 |
27 |
44 |
174 |
260 |
413 |
796 |
41 |
| VCDI |
0 |
0 |
19 |
25 |
110 |
574 |
8875 |
9765 |
|
...date precedes bulletin
|
Date: 2024-10-01:
| 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 |
112968 |
17500 |
1652 |
573 |
102 |
5 |
2 |
0 |
| OW |
0 |
749 |
423 |
211 |
149 |
25 |
0 |
0 |
| VODI |
0 |
43 |
289 |
351 |
195 |
201 |
28 |
0 |
| ODI |
0 |
0 |
48 |
256 |
174 |
346 |
137 |
0 |
| CDI |
0 |
0 |
16 |
185 |
238 |
663 |
886 |
0 |
| VCDI |
0 |
0 |
0 |
133 |
187 |
766 |
12380 |
6587 |
|
...date precedes bulletin
|
Date: 2024-10-03:
| 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 |
108049 |
20434 |
2210 |
659 |
119 |
34 |
2 |
0 |
| OW |
0 |
371 |
672 |
432 |
209 |
96 |
0 |
0 |
| VODI |
0 |
40 |
275 |
247 |
328 |
295 |
3 |
0 |
| ODI |
0 |
0 |
83 |
105 |
241 |
404 |
50 |
0 |
| CDI |
0 |
0 |
37 |
105 |
283 |
792 |
596 |
0 |
| VCDI |
0 |
0 |
0 |
65 |
143 |
893 |
13191 |
7005 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
108049 |
20492 |
2293 |
679 |
137 |
41 |
2 |
0 |
| OW |
0 |
310 |
628 |
396 |
199 |
87 |
0 |
0 |
| VODI |
0 |
43 |
238 |
268 |
337 |
303 |
3 |
0 |
| ODI |
0 |
0 |
87 |
98 |
235 |
409 |
51 |
0 |
| CDI |
0 |
0 |
31 |
95 |
267 |
794 |
725 |
0 |
| VCDI |
0 |
0 |
0 |
77 |
148 |
880 |
13061 |
7005 |
|
Date: 2024-10-07:
| 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 |
86289 |
16795 |
3597 |
795 |
229 |
52 |
2 |
0 |
| OW |
0 |
0 |
402 |
390 |
224 |
270 |
10 |
0 |
| VODI |
0 |
0 |
97 |
233 |
350 |
437 |
104 |
0 |
| ODI |
0 |
0 |
2 |
65 |
203 |
327 |
315 |
4 |
| CDI |
0 |
0 |
0 |
17 |
139 |
464 |
1881 |
97 |
| VCDI |
0 |
0 |
0 |
0 |
47 |
455 |
11363 |
10551 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
86289 |
16774 |
3557 |
784 |
305 |
324 |
49 |
0 |
| OW |
0 |
21 |
361 |
396 |
258 |
295 |
190 |
0 |
| VODI |
0 |
0 |
154 |
196 |
259 |
241 |
261 |
0 |
| ODI |
0 |
0 |
24 |
81 |
153 |
213 |
381 |
0 |
| CDI |
0 |
0 |
2 |
43 |
173 |
480 |
1509 |
118 |
| VCDI |
0 |
0 |
0 |
0 |
44 |
452 |
11285 |
10534 |
|
Date: 2024-10-09:
| 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 |
105854 |
18840 |
3558 |
978 |
195 |
19 |
2 |
0 |
| OW |
0 |
14 |
398 |
304 |
230 |
172 |
0 |
0 |
| VODI |
0 |
0 |
159 |
224 |
234 |
436 |
113 |
0 |
| ODI |
0 |
0 |
50 |
101 |
125 |
316 |
327 |
0 |
| CDI |
0 |
0 |
11 |
44 |
118 |
718 |
1715 |
3 |
| VCDI |
0 |
0 |
0 |
2 |
111 |
578 |
11988 |
10531 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
105854 |
18692 |
3326 |
1011 |
297 |
197 |
84 |
0 |
| OW |
0 |
131 |
336 |
240 |
138 |
267 |
156 |
0 |
| VODI |
0 |
26 |
308 |
197 |
213 |
348 |
267 |
0 |
| ODI |
0 |
5 |
120 |
109 |
90 |
267 |
351 |
0 |
| CDI |
0 |
0 |
84 |
91 |
165 |
586 |
1691 |
3 |
| VCDI |
0 |
0 |
2 |
5 |
110 |
574 |
11596 |
10531 |
|
Date: 2024-10-11:
| 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 |
106163 |
19052 |
3077 |
649 |
64 |
38 |
2 |
0 |
| OW |
115 |
79 |
514 |
392 |
128 |
50 |
0 |
0 |
| VODI |
0 |
5 |
229 |
265 |
435 |
231 |
11 |
0 |
| ODI |
0 |
0 |
96 |
137 |
194 |
405 |
91 |
0 |
| CDI |
0 |
0 |
43 |
113 |
264 |
705 |
1142 |
24 |
| VCDI |
0 |
0 |
0 |
32 |
118 |
1103 |
12276 |
10226 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
106249 |
18666 |
3004 |
853 |
221 |
60 |
2 |
0 |
| OW |
29 |
301 |
333 |
202 |
265 |
166 |
8 |
0 |
| VODI |
0 |
126 |
266 |
198 |
209 |
426 |
120 |
0 |
| ODI |
0 |
38 |
181 |
106 |
107 |
238 |
232 |
0 |
| CDI |
0 |
5 |
165 |
167 |
262 |
586 |
790 |
0 |
| VCDI |
0 |
0 |
10 |
62 |
139 |
1056 |
12370 |
10250 |
|
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