Validation of sea ice concentration
Bulletin date: 2024-02-01
Model vs. observations, sea ice class contingency tables
Date: 2024-01-26:
| 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 |
58361 |
19373 |
1043 |
96 |
1 |
1 |
0 |
0 |
| OW |
0 |
1259 |
1152 |
305 |
45 |
10 |
11 |
0 |
| VODI |
0 |
658 |
1286 |
1118 |
461 |
121 |
88 |
0 |
| ODI |
0 |
323 |
523 |
1171 |
527 |
354 |
308 |
0 |
| CDI |
0 |
370 |
677 |
1129 |
806 |
1232 |
2916 |
70 |
| VCDI |
0 |
395 |
780 |
1184 |
740 |
2918 |
38596 |
18060 |
|
...date precedes bulletin
|
Date: 2024-01-30:
| 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 |
59296 |
20335 |
1841 |
218 |
32 |
4 |
3 |
0 |
| OW |
0 |
1549 |
2023 |
1088 |
187 |
57 |
32 |
0 |
| VODI |
0 |
452 |
875 |
1375 |
510 |
179 |
155 |
0 |
| ODI |
0 |
259 |
346 |
584 |
505 |
272 |
337 |
53 |
| CDI |
0 |
405 |
788 |
1103 |
656 |
904 |
1638 |
241 |
| VCDI |
0 |
175 |
1048 |
1226 |
899 |
2225 |
32469 |
22124 |
|
...date precedes bulletin
|
Date: 2024-02-01:
| 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 |
56440 |
22573 |
2127 |
357 |
16 |
0 |
1 |
0 |
| OW |
0 |
1488 |
1563 |
906 |
242 |
78 |
33 |
0 |
| VODI |
0 |
630 |
1172 |
1114 |
568 |
269 |
173 |
0 |
| ODI |
0 |
282 |
360 |
674 |
536 |
501 |
462 |
0 |
| CDI |
0 |
684 |
575 |
1208 |
844 |
1633 |
3584 |
51 |
| VCDI |
0 |
648 |
1029 |
1263 |
905 |
2149 |
33586 |
17744 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
56440 |
22518 |
2095 |
338 |
15 |
3 |
2 |
0 |
| OW |
0 |
1565 |
1551 |
894 |
232 |
79 |
31 |
0 |
| VODI |
0 |
630 |
1217 |
1137 |
565 |
249 |
198 |
0 |
| ODI |
0 |
301 |
370 |
712 |
522 |
498 |
414 |
0 |
| CDI |
0 |
642 |
556 |
1142 |
864 |
1695 |
3730 |
57 |
| VCDI |
0 |
649 |
1037 |
1299 |
913 |
2106 |
33464 |
17738 |
|
Date: 2024-02-05:
| 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 |
55301 |
23142 |
2382 |
859 |
30 |
7 |
3 |
0 |
| OW |
27 |
1962 |
1710 |
1658 |
344 |
80 |
28 |
0 |
| VODI |
0 |
346 |
749 |
1463 |
637 |
345 |
146 |
0 |
| ODI |
0 |
391 |
391 |
1196 |
723 |
455 |
290 |
9 |
| CDI |
0 |
626 |
945 |
1713 |
1383 |
2048 |
2907 |
98 |
| VCDI |
0 |
47 |
502 |
1483 |
1132 |
3602 |
33542 |
13766 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55278 |
22254 |
2074 |
656 |
28 |
4 |
3 |
0 |
| OW |
50 |
1568 |
1193 |
1273 |
271 |
114 |
35 |
0 |
| VODI |
0 |
864 |
947 |
1491 |
510 |
318 |
138 |
0 |
| ODI |
0 |
341 |
441 |
935 |
624 |
521 |
241 |
8 |
| CDI |
0 |
572 |
746 |
1626 |
1218 |
1462 |
2449 |
110 |
| VCDI |
0 |
915 |
1278 |
2391 |
1598 |
4118 |
34050 |
13755 |
|
Date: 2024-02-07:
| 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 |
52951 |
25216 |
2693 |
642 |
26 |
3 |
1 |
0 |
| OW |
0 |
1472 |
1777 |
1283 |
254 |
116 |
20 |
0 |
| VODI |
0 |
471 |
720 |
1682 |
536 |
238 |
140 |
0 |
| ODI |
0 |
196 |
265 |
1224 |
661 |
434 |
326 |
4 |
| CDI |
0 |
188 |
239 |
1415 |
1195 |
1379 |
2906 |
69 |
| VCDI |
0 |
169 |
500 |
1920 |
1467 |
4466 |
34177 |
15027 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
52936 |
23913 |
2055 |
502 |
27 |
7 |
4 |
0 |
| OW |
6 |
1948 |
1358 |
731 |
146 |
72 |
25 |
0 |
| VODI |
9 |
754 |
1283 |
1296 |
399 |
193 |
123 |
0 |
| ODI |
0 |
271 |
483 |
1151 |
605 |
363 |
228 |
0 |
| CDI |
0 |
319 |
231 |
1670 |
1036 |
1257 |
2394 |
47 |
| VCDI |
0 |
507 |
784 |
2816 |
1926 |
4744 |
34796 |
15053 |
|
Date: 2024-02-09:
| 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 |
51535 |
25276 |
2824 |
988 |
333 |
22 |
3 |
0 |
| OW |
0 |
823 |
2305 |
804 |
293 |
91 |
98 |
0 |
| VODI |
0 |
191 |
991 |
1348 |
730 |
258 |
269 |
0 |
| ODI |
0 |
161 |
136 |
931 |
751 |
735 |
593 |
21 |
| CDI |
0 |
141 |
102 |
809 |
729 |
1451 |
3492 |
155 |
| VCDI |
0 |
402 |
466 |
677 |
831 |
3953 |
30419 |
22331 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
51535 |
23896 |
2044 |
740 |
280 |
36 |
7 |
0 |
| OW |
0 |
1672 |
1384 |
520 |
252 |
77 |
67 |
0 |
| VODI |
0 |
384 |
1980 |
1097 |
569 |
243 |
329 |
0 |
| ODI |
0 |
155 |
595 |
1032 |
588 |
515 |
589 |
10 |
| CDI |
0 |
223 |
198 |
1121 |
668 |
1138 |
2756 |
165 |
| VCDI |
0 |
664 |
623 |
1047 |
1310 |
4501 |
31126 |
22332 |
|
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