Validation of sea ice concentration
Bulletin date: 2024-05-30
Model vs. observations, sea ice class contingency tables
Date: 2024-05-24:
| 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 |
63113 |
17480 |
3765 |
205 |
42 |
2 |
7 |
0 |
| OW |
173 |
470 |
2553 |
1129 |
192 |
51 |
45 |
2 |
| VODI |
32 |
1 |
782 |
1683 |
721 |
288 |
451 |
10 |
| ODI |
16 |
0 |
161 |
769 |
1061 |
1229 |
1297 |
21 |
| CDI |
6 |
0 |
68 |
705 |
1293 |
4093 |
11454 |
503 |
| VCDI |
0 |
0 |
10 |
269 |
345 |
1206 |
22662 |
18103 |
|
...date precedes bulletin
|
Date: 2024-05-28:
| 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 |
62408 |
20422 |
2603 |
554 |
28 |
5 |
23 |
0 |
| OW |
32 |
378 |
1376 |
1613 |
121 |
35 |
126 |
0 |
| VODI |
3 |
84 |
500 |
1926 |
987 |
291 |
586 |
0 |
| ODI |
0 |
32 |
159 |
1142 |
1353 |
1486 |
1915 |
22 |
| CDI |
0 |
2 |
80 |
757 |
1016 |
3351 |
13563 |
192 |
| VCDI |
0 |
0 |
1 |
58 |
517 |
1006 |
19546 |
18169 |
|
...date precedes bulletin
|
Date: 2024-05-30:
| 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 |
63775 |
19676 |
2479 |
315 |
32 |
8 |
34 |
0 |
| OW |
34 |
377 |
1618 |
1087 |
262 |
65 |
124 |
0 |
| VODI |
0 |
42 |
648 |
1810 |
920 |
484 |
628 |
0 |
| ODI |
0 |
12 |
162 |
1088 |
1223 |
1837 |
2143 |
23 |
| CDI |
0 |
2 |
61 |
752 |
989 |
3246 |
15774 |
186 |
| VCDI |
0 |
0 |
0 |
155 |
220 |
892 |
18548 |
16737 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
63780 |
19561 |
2558 |
336 |
43 |
12 |
35 |
0 |
| OW |
29 |
466 |
1475 |
1114 |
272 |
62 |
122 |
0 |
| VODI |
0 |
67 |
673 |
1791 |
953 |
484 |
565 |
0 |
| ODI |
0 |
13 |
182 |
1034 |
1138 |
2000 |
2384 |
1 |
| CDI |
0 |
2 |
80 |
789 |
1023 |
3174 |
15317 |
137 |
| VCDI |
0 |
0 |
0 |
143 |
217 |
800 |
18828 |
16808 |
|
Date: 2024-06-03:
| 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 |
63456 |
20119 |
2709 |
536 |
73 |
37 |
19 |
0 |
| OW |
0 |
699 |
1692 |
1693 |
327 |
112 |
205 |
0 |
| VODI |
0 |
82 |
569 |
2034 |
1481 |
967 |
1087 |
4 |
| ODI |
0 |
22 |
83 |
729 |
1465 |
3230 |
3612 |
52 |
| CDI |
0 |
26 |
43 |
447 |
633 |
1833 |
12164 |
145 |
| VCDI |
0 |
0 |
5 |
47 |
870 |
325 |
14635 |
20201 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
63456 |
19776 |
2489 |
480 |
96 |
58 |
30 |
0 |
| OW |
0 |
682 |
1298 |
1170 |
373 |
186 |
208 |
0 |
| VODI |
0 |
262 |
899 |
1577 |
733 |
590 |
1141 |
0 |
| ODI |
0 |
71 |
296 |
1130 |
1348 |
1708 |
3155 |
18 |
| CDI |
0 |
157 |
112 |
1064 |
1506 |
3583 |
10984 |
117 |
| VCDI |
0 |
0 |
7 |
65 |
793 |
379 |
16204 |
20267 |
|
Date: 2024-06-05:
| 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 |
64158 |
21043 |
2294 |
365 |
52 |
20 |
51 |
0 |
| OW |
0 |
710 |
2075 |
1455 |
283 |
83 |
251 |
0 |
| VODI |
0 |
83 |
649 |
2851 |
1349 |
568 |
632 |
5 |
| ODI |
0 |
20 |
61 |
1011 |
1440 |
2384 |
2403 |
54 |
| CDI |
0 |
33 |
49 |
586 |
637 |
1670 |
10376 |
142 |
| VCDI |
0 |
0 |
0 |
285 |
217 |
534 |
17838 |
19751 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
64158 |
20479 |
1784 |
320 |
74 |
32 |
61 |
0 |
| OW |
0 |
795 |
1664 |
1139 |
259 |
82 |
241 |
0 |
| VODI |
0 |
316 |
1123 |
2036 |
734 |
324 |
677 |
0 |
| ODI |
0 |
111 |
444 |
1527 |
1543 |
1293 |
1850 |
21 |
| CDI |
0 |
188 |
113 |
1268 |
1127 |
2934 |
9448 |
109 |
| VCDI |
0 |
0 |
0 |
263 |
241 |
594 |
19274 |
19822 |
|
Date: 2024-06-07:
| 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 |
66433 |
20096 |
1626 |
328 |
96 |
46 |
73 |
0 |
| OW |
0 |
926 |
2082 |
1065 |
274 |
157 |
229 |
0 |
| VODI |
0 |
45 |
1014 |
1931 |
1564 |
717 |
698 |
21 |
| ODI |
0 |
22 |
141 |
990 |
1351 |
2358 |
1780 |
72 |
| CDI |
0 |
41 |
95 |
567 |
789 |
2675 |
8980 |
158 |
| VCDI |
0 |
0 |
20 |
272 |
163 |
860 |
18546 |
19167 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66433 |
18923 |
1427 |
408 |
120 |
47 |
113 |
0 |
| OW |
0 |
1454 |
1336 |
685 |
251 |
122 |
245 |
0 |
| VODI |
0 |
435 |
1335 |
1302 |
925 |
507 |
675 |
0 |
| ODI |
0 |
138 |
593 |
1210 |
1239 |
1191 |
1678 |
28 |
| CDI |
0 |
168 |
251 |
1179 |
1482 |
3658 |
7770 |
174 |
| VCDI |
0 |
12 |
36 |
369 |
220 |
1288 |
19825 |
19216 |
|
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