Validation of sea ice concentration
Bulletin date: 2024-06-27
Model vs. observations, sea ice class contingency tables
Date: 2024-06-21:
| 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 |
68322 |
20054 |
6306 |
615 |
165 |
67 |
78 |
0 |
| OW |
0 |
215 |
2695 |
1799 |
709 |
318 |
282 |
5 |
| VODI |
0 |
14 |
527 |
1086 |
1654 |
930 |
888 |
52 |
| ODI |
0 |
3 |
166 |
473 |
819 |
1880 |
3264 |
110 |
| CDI |
0 |
0 |
109 |
549 |
671 |
1502 |
12386 |
1176 |
| VCDI |
0 |
0 |
0 |
83 |
101 |
260 |
14106 |
14029 |
|
...date precedes bulletin
|
Date: 2024-06-25:
| 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 |
70787 |
21620 |
5386 |
1511 |
315 |
71 |
90 |
0 |
| OW |
4 |
419 |
1071 |
2074 |
680 |
124 |
231 |
0 |
| VODI |
1 |
53 |
221 |
1668 |
1588 |
478 |
818 |
2 |
| ODI |
0 |
13 |
20 |
615 |
1457 |
2776 |
2611 |
12 |
| CDI |
0 |
51 |
24 |
327 |
682 |
1766 |
14618 |
6110 |
| VCDI |
0 |
0 |
0 |
22 |
294 |
189 |
9871 |
7798 |
|
...date precedes bulletin
|
Date: 2024-06-27:
| 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 |
71495 |
22463 |
5041 |
822 |
308 |
119 |
52 |
0 |
| OW |
4 |
285 |
1684 |
1436 |
632 |
202 |
277 |
0 |
| VODI |
0 |
76 |
336 |
1447 |
1657 |
654 |
931 |
0 |
| ODI |
0 |
32 |
66 |
412 |
1451 |
2217 |
3199 |
0 |
| CDI |
0 |
28 |
102 |
286 |
671 |
1268 |
16095 |
8358 |
| VCDI |
0 |
0 |
0 |
10 |
217 |
159 |
8379 |
5597 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71495 |
22477 |
5103 |
902 |
312 |
133 |
61 |
0 |
| OW |
4 |
266 |
1587 |
1324 |
646 |
181 |
240 |
0 |
| VODI |
0 |
76 |
356 |
1449 |
1630 |
714 |
916 |
0 |
| ODI |
0 |
46 |
80 |
435 |
1471 |
2131 |
3055 |
0 |
| CDI |
0 |
19 |
103 |
297 |
694 |
1309 |
16199 |
7866 |
| VCDI |
0 |
0 |
0 |
6 |
183 |
151 |
8462 |
6089 |
|
Date: 2024-07-01:
| 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 |
73102 |
19617 |
6799 |
1009 |
103 |
19 |
79 |
0 |
| OW |
0 |
276 |
2496 |
2050 |
208 |
49 |
260 |
0 |
| VODI |
0 |
34 |
681 |
3431 |
1416 |
704 |
919 |
0 |
| ODI |
0 |
0 |
80 |
1062 |
2142 |
3038 |
3303 |
29 |
| CDI |
0 |
0 |
0 |
417 |
1167 |
2049 |
14170 |
8937 |
| VCDI |
0 |
0 |
0 |
141 |
76 |
164 |
4144 |
4297 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
73102 |
19374 |
5970 |
932 |
98 |
18 |
83 |
0 |
| OW |
0 |
456 |
2402 |
1312 |
211 |
56 |
188 |
0 |
| VODI |
0 |
72 |
1240 |
2666 |
913 |
597 |
1025 |
0 |
| ODI |
0 |
19 |
370 |
2103 |
1439 |
1486 |
2367 |
35 |
| CDI |
0 |
6 |
74 |
819 |
2014 |
3151 |
12379 |
7647 |
| VCDI |
0 |
0 |
0 |
278 |
437 |
715 |
6833 |
5581 |
|
Date: 2024-07-03:
| 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 |
72717 |
20841 |
6127 |
1115 |
269 |
79 |
54 |
0 |
| OW |
0 |
231 |
1893 |
2113 |
682 |
150 |
218 |
0 |
| VODI |
0 |
2 |
503 |
2308 |
2317 |
1000 |
1118 |
1 |
| ODI |
0 |
0 |
87 |
740 |
1351 |
2362 |
5172 |
7 |
| CDI |
0 |
0 |
0 |
232 |
679 |
1455 |
16833 |
9605 |
| VCDI |
0 |
0 |
0 |
153 |
67 |
73 |
3648 |
2266 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72717 |
20437 |
5406 |
949 |
244 |
71 |
65 |
0 |
| OW |
0 |
581 |
1934 |
1388 |
522 |
193 |
203 |
0 |
| VODI |
0 |
56 |
926 |
2144 |
1579 |
754 |
1097 |
0 |
| ODI |
0 |
0 |
258 |
1266 |
1528 |
1572 |
3405 |
3 |
| CDI |
0 |
0 |
86 |
660 |
1235 |
2109 |
14479 |
7388 |
| VCDI |
0 |
0 |
0 |
254 |
257 |
420 |
7794 |
4488 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72776 |
22990 |
3286 |
1337 |
223 |
36 |
85 |
0 |
| OW |
0 |
682 |
1492 |
1610 |
508 |
238 |
245 |
0 |
| VODI |
0 |
131 |
825 |
2328 |
1255 |
755 |
1202 |
0 |
| ODI |
0 |
12 |
180 |
1208 |
1191 |
1768 |
3775 |
0 |
| CDI |
0 |
0 |
15 |
806 |
1081 |
2552 |
14070 |
5662 |
| VCDI |
0 |
0 |
0 |
260 |
232 |
423 |
8147 |
5082 |
|
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