Validation of sea ice concentration
Bulletin date: 2024-06-20
Model vs. observations, sea ice class contingency tables
Date: 2024-06-14:
| 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 |
66101 |
20041 |
2625 |
418 |
86 |
35 |
45 |
0 |
| OW |
0 |
713 |
2949 |
2822 |
742 |
321 |
243 |
1 |
| VODI |
0 |
44 |
591 |
1789 |
2041 |
1157 |
1128 |
13 |
| ODI |
0 |
6 |
100 |
530 |
992 |
2445 |
2824 |
25 |
| CDI |
0 |
0 |
39 |
607 |
677 |
2895 |
15746 |
823 |
| VCDI |
0 |
0 |
0 |
37 |
47 |
108 |
10020 |
16642 |
|
...date precedes bulletin
|
Date: 2024-06-18:
| 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 |
65062 |
20766 |
5517 |
1132 |
251 |
60 |
97 |
0 |
| OW |
0 |
213 |
3286 |
2353 |
1040 |
212 |
357 |
0 |
| VODI |
0 |
3 |
542 |
1162 |
1891 |
1383 |
934 |
17 |
| ODI |
0 |
2 |
61 |
471 |
882 |
2579 |
3354 |
70 |
| CDI |
0 |
0 |
32 |
344 |
452 |
1479 |
12851 |
171 |
| VCDI |
0 |
0 |
0 |
23 |
76 |
87 |
13427 |
15829 |
|
...date precedes bulletin
|
Date: 2024-06-20:
| 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 |
67354 |
19868 |
6260 |
680 |
259 |
109 |
134 |
0 |
| OW |
0 |
160 |
3091 |
1805 |
758 |
257 |
358 |
5 |
| VODI |
0 |
4 |
561 |
1321 |
1438 |
1117 |
947 |
46 |
| ODI |
0 |
0 |
145 |
543 |
914 |
1998 |
3370 |
108 |
| CDI |
0 |
0 |
161 |
354 |
524 |
1277 |
12630 |
1235 |
| VCDI |
0 |
0 |
0 |
59 |
102 |
216 |
13486 |
14814 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67354 |
19931 |
6919 |
969 |
324 |
123 |
171 |
0 |
| OW |
0 |
97 |
2431 |
1575 |
767 |
278 |
352 |
5 |
| VODI |
0 |
4 |
552 |
1260 |
1350 |
1103 |
909 |
52 |
| ODI |
0 |
0 |
160 |
532 |
889 |
1935 |
3202 |
97 |
| CDI |
0 |
0 |
156 |
365 |
562 |
1302 |
12483 |
1458 |
| VCDI |
0 |
0 |
0 |
61 |
103 |
233 |
13808 |
14596 |
|
Date: 2024-06-24:
| 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 |
70164 |
20128 |
6582 |
1615 |
280 |
280 |
69 |
0 |
| OW |
0 |
353 |
1207 |
2218 |
595 |
113 |
232 |
0 |
| VODI |
0 |
54 |
331 |
1668 |
1694 |
603 |
700 |
5 |
| ODI |
0 |
9 |
24 |
545 |
1454 |
3392 |
2692 |
19 |
| CDI |
0 |
33 |
24 |
260 |
792 |
2089 |
14646 |
3744 |
| VCDI |
0 |
0 |
0 |
27 |
267 |
158 |
10154 |
9248 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70164 |
20049 |
5824 |
1164 |
283 |
291 |
85 |
0 |
| OW |
0 |
281 |
1664 |
1991 |
636 |
133 |
233 |
1 |
| VODI |
0 |
110 |
469 |
1651 |
1050 |
478 |
832 |
12 |
| ODI |
0 |
64 |
69 |
722 |
1397 |
1838 |
2106 |
42 |
| CDI |
0 |
73 |
136 |
712 |
1337 |
3420 |
10406 |
1600 |
| VCDI |
0 |
0 |
6 |
93 |
379 |
475 |
14831 |
11361 |
|
Date: 2024-06-26:
| 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 |
71153 |
21598 |
6079 |
1083 |
258 |
52 |
92 |
0 |
| OW |
1 |
352 |
1388 |
1622 |
688 |
144 |
308 |
0 |
| VODI |
0 |
63 |
250 |
1468 |
1508 |
541 |
943 |
0 |
| ODI |
0 |
21 |
37 |
518 |
1256 |
2021 |
3345 |
5 |
| CDI |
0 |
32 |
66 |
362 |
722 |
1778 |
15330 |
7309 |
| VCDI |
0 |
0 |
0 |
13 |
178 |
224 |
9161 |
6499 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71153 |
21355 |
4843 |
953 |
269 |
54 |
96 |
0 |
| OW |
1 |
378 |
2120 |
1157 |
503 |
125 |
259 |
0 |
| VODI |
0 |
111 |
623 |
1331 |
882 |
366 |
1010 |
7 |
| ODI |
0 |
70 |
88 |
798 |
1421 |
1448 |
2840 |
38 |
| CDI |
0 |
138 |
105 |
778 |
1294 |
2409 |
11163 |
2267 |
| VCDI |
0 |
14 |
41 |
49 |
241 |
358 |
13811 |
11501 |
|
Date: 2024-06-28:
| 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 |
71098 |
22742 |
4722 |
919 |
302 |
101 |
66 |
0 |
| OW |
4 |
296 |
1706 |
1739 |
462 |
270 |
302 |
0 |
| VODI |
0 |
73 |
333 |
1716 |
1501 |
725 |
1034 |
0 |
| ODI |
0 |
33 |
96 |
708 |
1368 |
2027 |
3619 |
0 |
| CDI |
0 |
30 |
58 |
269 |
514 |
1373 |
16044 |
9068 |
| VCDI |
0 |
0 |
0 |
5 |
182 |
194 |
7871 |
4898 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71098 |
22054 |
3999 |
1006 |
356 |
117 |
59 |
0 |
| OW |
4 |
754 |
1854 |
988 |
338 |
235 |
258 |
0 |
| VODI |
0 |
143 |
715 |
1568 |
722 |
403 |
1140 |
37 |
| ODI |
0 |
85 |
200 |
971 |
1486 |
1482 |
2939 |
84 |
| CDI |
0 |
138 |
140 |
756 |
1282 |
2282 |
12818 |
1144 |
| VCDI |
0 |
0 |
7 |
67 |
145 |
171 |
11722 |
12701 |
|
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