Validation of sea ice concentration
Bulletin date: 2024-10-10
Model vs. observations, sea ice class contingency tables
Date: 2024-10-04:
| 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 |
106556 |
20365 |
2978 |
888 |
207 |
48 |
2 |
0 |
| OW |
0 |
171 |
537 |
499 |
360 |
251 |
0 |
0 |
| VODI |
0 |
1 |
112 |
313 |
328 |
411 |
15 |
0 |
| ODI |
0 |
0 |
7 |
155 |
244 |
362 |
76 |
0 |
| CDI |
0 |
0 |
1 |
91 |
295 |
765 |
701 |
0 |
| VCDI |
0 |
0 |
0 |
58 |
129 |
906 |
13727 |
6909 |
|
...date precedes bulletin
|
Date: 2024-10-08:
| 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 |
107169 |
18093 |
3485 |
823 |
235 |
72 |
2 |
0 |
| OW |
0 |
5 |
423 |
313 |
201 |
186 |
4 |
0 |
| VODI |
0 |
0 |
152 |
200 |
288 |
393 |
142 |
0 |
| ODI |
0 |
0 |
16 |
83 |
176 |
283 |
304 |
0 |
| CDI |
0 |
0 |
2 |
13 |
176 |
608 |
1720 |
16 |
| VCDI |
0 |
0 |
0 |
2 |
212 |
314 |
12039 |
10318 |
|
...date precedes bulletin
|
Date: 2024-10-10:
| 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 |
105887 |
19414 |
2919 |
873 |
85 |
8 |
2 |
0 |
| OW |
0 |
53 |
382 |
437 |
213 |
27 |
0 |
0 |
| VODI |
0 |
9 |
172 |
340 |
384 |
194 |
54 |
0 |
| ODI |
0 |
0 |
66 |
125 |
163 |
324 |
241 |
0 |
| CDI |
0 |
0 |
25 |
91 |
180 |
586 |
1475 |
9 |
| VCDI |
0 |
0 |
0 |
38 |
159 |
964 |
12814 |
9755 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
105887 |
19399 |
2927 |
915 |
104 |
15 |
2 |
0 |
| OW |
0 |
69 |
364 |
416 |
217 |
19 |
0 |
0 |
| VODI |
0 |
8 |
178 |
317 |
364 |
204 |
56 |
0 |
| ODI |
0 |
0 |
70 |
126 |
162 |
320 |
278 |
0 |
| CDI |
0 |
0 |
25 |
91 |
180 |
594 |
1428 |
7 |
| VCDI |
0 |
0 |
0 |
39 |
157 |
951 |
12822 |
9757 |
|
Date: 2024-10-14:
| 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 |
109539 |
17123 |
1917 |
417 |
14 |
5 |
2 |
0 |
| OW |
465 |
788 |
607 |
383 |
25 |
0 |
0 |
0 |
| VODI |
62 |
143 |
238 |
584 |
220 |
45 |
2 |
0 |
| ODI |
0 |
92 |
91 |
246 |
243 |
221 |
101 |
0 |
| CDI |
0 |
36 |
218 |
431 |
357 |
487 |
1548 |
0 |
| VCDI |
0 |
0 |
2 |
172 |
440 |
688 |
10867 |
9649 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
109663 |
17059 |
1904 |
469 |
17 |
5 |
2 |
0 |
| OW |
261 |
362 |
399 |
483 |
60 |
0 |
0 |
0 |
| VODI |
142 |
282 |
239 |
271 |
203 |
147 |
57 |
0 |
| ODI |
0 |
195 |
133 |
179 |
120 |
111 |
155 |
0 |
| CDI |
0 |
276 |
265 |
431 |
288 |
228 |
704 |
13 |
| VCDI |
0 |
8 |
133 |
400 |
611 |
955 |
11602 |
9636 |
|
Date: 2024-10-16:
| 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 |
98315 |
24916 |
3588 |
1372 |
316 |
14 |
2 |
0 |
| OW |
0 |
712 |
518 |
597 |
191 |
60 |
0 |
0 |
| VODI |
0 |
90 |
319 |
730 |
347 |
255 |
4 |
0 |
| ODI |
0 |
27 |
175 |
272 |
257 |
326 |
217 |
0 |
| CDI |
0 |
2 |
260 |
479 |
304 |
380 |
1452 |
0 |
| VCDI |
0 |
0 |
10 |
214 |
400 |
785 |
13286 |
7276 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
98315 |
24451 |
3480 |
1418 |
396 |
11 |
2 |
0 |
| OW |
0 |
592 |
424 |
682 |
226 |
78 |
0 |
0 |
| VODI |
0 |
340 |
234 |
483 |
230 |
277 |
59 |
0 |
| ODI |
0 |
174 |
153 |
231 |
205 |
214 |
188 |
0 |
| CDI |
0 |
177 |
337 |
316 |
297 |
414 |
1118 |
0 |
| VCDI |
0 |
13 |
242 |
534 |
461 |
826 |
13594 |
7276 |
|
Date: 2024-10-18:
| 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 |
29678 |
19948 |
1979 |
208 |
115 |
2 |
2 |
0 |
| OW |
0 |
513 |
717 |
244 |
75 |
9 |
0 |
0 |
| VODI |
0 |
119 |
370 |
383 |
128 |
63 |
50 |
0 |
| ODI |
0 |
40 |
156 |
326 |
140 |
154 |
154 |
0 |
| CDI |
0 |
20 |
364 |
551 |
474 |
347 |
1057 |
0 |
| VCDI |
0 |
0 |
60 |
212 |
421 |
939 |
13333 |
7266 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
29678 |
19032 |
1628 |
264 |
141 |
4 |
2 |
0 |
| OW |
0 |
365 |
536 |
114 |
52 |
16 |
25 |
0 |
| VODI |
0 |
618 |
373 |
278 |
103 |
77 |
40 |
0 |
| ODI |
0 |
190 |
255 |
198 |
116 |
143 |
131 |
0 |
| CDI |
0 |
343 |
385 |
508 |
337 |
267 |
770 |
0 |
| VCDI |
0 |
92 |
469 |
562 |
604 |
1007 |
13628 |
7266 |
|
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