Validation of sea ice concentration
Bulletin date: 2024-07-11
Model vs. observations, sea ice class contingency tables
Date: 2024-07-05:
| 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 |
72776 |
23480 |
4054 |
1318 |
153 |
25 |
58 |
0 |
| OW |
0 |
303 |
1434 |
2702 |
549 |
174 |
251 |
0 |
| VODI |
0 |
32 |
290 |
2469 |
1980 |
1096 |
1239 |
0 |
| ODI |
0 |
0 |
20 |
729 |
1271 |
2737 |
4885 |
1 |
| CDI |
0 |
0 |
0 |
218 |
496 |
1647 |
19507 |
8326 |
| VCDI |
0 |
0 |
0 |
113 |
41 |
93 |
1584 |
2417 |
|
...date precedes bulletin
|
Date: 2024-07-09:
| 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 |
73457 |
25403 |
4174 |
1368 |
65 |
19 |
37 |
0 |
| OW |
0 |
302 |
1916 |
3196 |
578 |
187 |
262 |
0 |
| VODI |
0 |
38 |
412 |
3088 |
2902 |
1554 |
1204 |
0 |
| ODI |
0 |
0 |
11 |
686 |
1651 |
2567 |
4710 |
64 |
| CDI |
0 |
0 |
240 |
198 |
413 |
1421 |
16296 |
8824 |
| VCDI |
0 |
0 |
0 |
133 |
42 |
28 |
607 |
415 |
|
...date precedes bulletin
|
Date: 2024-07-11:
| 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 |
78659 |
20425 |
4024 |
1043 |
155 |
38 |
52 |
0 |
| OW |
0 |
606 |
1945 |
3167 |
1039 |
265 |
251 |
0 |
| VODI |
0 |
84 |
373 |
2815 |
3315 |
1724 |
1348 |
0 |
| ODI |
0 |
0 |
23 |
704 |
1530 |
2352 |
5400 |
248 |
| CDI |
0 |
0 |
329 |
195 |
440 |
1213 |
15030 |
9237 |
| VCDI |
0 |
0 |
4 |
79 |
16 |
88 |
252 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
78659 |
20674 |
4204 |
1283 |
179 |
57 |
63 |
0 |
| OW |
0 |
370 |
1725 |
2847 |
1011 |
242 |
245 |
0 |
| VODI |
0 |
71 |
402 |
2899 |
3219 |
1509 |
1396 |
0 |
| ODI |
0 |
0 |
39 |
687 |
1585 |
2595 |
5021 |
227 |
| CDI |
0 |
0 |
327 |
197 |
465 |
1188 |
14840 |
9258 |
| VCDI |
0 |
0 |
1 |
90 |
36 |
89 |
768 |
0 |
|
Date: 2024-07-15:
| 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 |
81402 |
18326 |
6026 |
1537 |
221 |
18 |
72 |
0 |
| OW |
0 |
259 |
2606 |
6097 |
1851 |
237 |
198 |
0 |
| VODI |
0 |
0 |
381 |
2555 |
2571 |
1638 |
918 |
2 |
| ODI |
0 |
0 |
107 |
548 |
1356 |
2540 |
2853 |
24 |
| CDI |
0 |
0 |
336 |
274 |
263 |
562 |
10203 |
11084 |
| VCDI |
0 |
0 |
0 |
11 |
3 |
5 |
650 |
734 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
81402 |
18133 |
4765 |
901 |
158 |
18 |
51 |
0 |
| OW |
0 |
445 |
3070 |
4070 |
1125 |
141 |
162 |
0 |
| VODI |
0 |
7 |
1047 |
3973 |
2178 |
834 |
731 |
4 |
| ODI |
0 |
0 |
242 |
1682 |
2338 |
2708 |
3131 |
150 |
| CDI |
0 |
0 |
332 |
338 |
448 |
1289 |
10648 |
11686 |
| VCDI |
0 |
0 |
0 |
58 |
18 |
10 |
171 |
4 |
|
Date: 2024-07-17:
| 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 |
80343 |
18812 |
6505 |
3061 |
423 |
39 |
90 |
0 |
| OW |
0 |
270 |
2410 |
4808 |
1632 |
342 |
254 |
0 |
| VODI |
0 |
0 |
477 |
2821 |
2144 |
1679 |
1230 |
0 |
| ODI |
0 |
0 |
229 |
667 |
1490 |
2256 |
2329 |
11 |
| CDI |
0 |
0 |
195 |
280 |
301 |
784 |
11866 |
9659 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
411 |
650 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
80343 |
18686 |
5060 |
1256 |
142 |
26 |
53 |
0 |
| OW |
0 |
396 |
2962 |
4751 |
1187 |
178 |
199 |
0 |
| VODI |
0 |
0 |
1229 |
3548 |
2066 |
1028 |
721 |
0 |
| ODI |
0 |
0 |
346 |
1703 |
2147 |
2518 |
3690 |
227 |
| CDI |
0 |
0 |
219 |
346 |
441 |
1317 |
10922 |
10051 |
| VCDI |
0 |
0 |
0 |
33 |
7 |
33 |
595 |
42 |
|
Date: 2024-07-19:
| 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 |
80930 |
18745 |
7645 |
3209 |
224 |
42 |
88 |
0 |
| OW |
0 |
342 |
2685 |
4132 |
692 |
164 |
273 |
0 |
| VODI |
0 |
1 |
819 |
3312 |
2399 |
1519 |
1074 |
0 |
| ODI |
0 |
0 |
313 |
1077 |
1631 |
1635 |
1381 |
4 |
| CDI |
0 |
0 |
104 |
264 |
285 |
1084 |
11304 |
9424 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
38 |
676 |
950 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
80930 |
18709 |
5351 |
1092 |
89 |
23 |
44 |
0 |
| OW |
0 |
378 |
3684 |
4518 |
712 |
144 |
253 |
0 |
| VODI |
0 |
1 |
1831 |
3521 |
1656 |
840 |
548 |
0 |
| ODI |
0 |
0 |
586 |
2404 |
2119 |
2096 |
3164 |
377 |
| CDI |
0 |
0 |
114 |
459 |
646 |
1297 |
9173 |
9494 |
| VCDI |
0 |
0 |
0 |
0 |
12 |
82 |
1614 |
507 |
|
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