Validation of sea ice concentration
Bulletin date: 2024-06-06
Model vs. observations, sea ice class contingency tables
Date: 2024-05-31:
| 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 |
63731 |
20020 |
2237 |
277 |
43 |
9 |
25 |
0 |
| OW |
25 |
494 |
1874 |
776 |
293 |
84 |
100 |
0 |
| VODI |
0 |
52 |
940 |
1504 |
946 |
599 |
541 |
0 |
| ODI |
0 |
5 |
256 |
956 |
1279 |
2355 |
2220 |
33 |
| CDI |
0 |
2 |
126 |
833 |
1031 |
2925 |
14553 |
165 |
| VCDI |
0 |
0 |
3 |
161 |
238 |
619 |
18241 |
17897 |
|
...date precedes bulletin
|
Date: 2024-06-04:
| 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 |
64254 |
19948 |
2849 |
203 |
60 |
25 |
24 |
0 |
| OW |
0 |
686 |
2443 |
1117 |
352 |
110 |
271 |
0 |
| VODI |
0 |
38 |
806 |
1830 |
1736 |
1069 |
680 |
6 |
| ODI |
0 |
12 |
68 |
671 |
1537 |
3203 |
2714 |
51 |
| CDI |
0 |
16 |
61 |
469 |
477 |
1592 |
11456 |
135 |
| VCDI |
0 |
0 |
2 |
160 |
209 |
554 |
16274 |
20300 |
|
...date precedes bulletin
|
Date: 2024-06-06:
| 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 |
64619 |
20947 |
2229 |
483 |
79 |
51 |
78 |
0 |
| OW |
0 |
647 |
1828 |
1478 |
395 |
141 |
223 |
0 |
| VODI |
0 |
56 |
655 |
1960 |
1990 |
754 |
610 |
10 |
| ODI |
0 |
18 |
71 |
638 |
1605 |
2562 |
1897 |
67 |
| CDI |
0 |
39 |
93 |
392 |
775 |
2096 |
9739 |
121 |
| VCDI |
0 |
0 |
10 |
315 |
356 |
440 |
18218 |
19783 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
64619 |
20784 |
2223 |
497 |
72 |
53 |
84 |
0 |
| OW |
0 |
773 |
1759 |
1480 |
422 |
127 |
193 |
0 |
| VODI |
0 |
89 |
706 |
1900 |
1975 |
742 |
621 |
0 |
| ODI |
0 |
19 |
94 |
682 |
1673 |
2752 |
1935 |
45 |
| CDI |
0 |
42 |
96 |
412 |
729 |
1910 |
9390 |
119 |
| VCDI |
0 |
0 |
8 |
295 |
329 |
460 |
18542 |
19817 |
|
Date: 2024-06-10:
| 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 |
68379 |
18655 |
1879 |
752 |
53 |
17 |
42 |
0 |
| OW |
20 |
958 |
1603 |
3191 |
1283 |
248 |
202 |
8 |
| VODI |
4 |
329 |
619 |
1784 |
2017 |
1324 |
693 |
91 |
| ODI |
17 |
92 |
113 |
782 |
771 |
2435 |
1507 |
144 |
| CDI |
51 |
34 |
30 |
389 |
477 |
3568 |
9524 |
138 |
| VCDI |
0 |
0 |
0 |
96 |
51 |
531 |
14590 |
18977 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68351 |
18124 |
1490 |
632 |
30 |
23 |
32 |
0 |
| OW |
48 |
1328 |
1446 |
1483 |
348 |
130 |
210 |
0 |
| VODI |
3 |
443 |
909 |
2274 |
1363 |
658 |
678 |
63 |
| ODI |
8 |
73 |
303 |
1705 |
2045 |
2216 |
1421 |
133 |
| CDI |
57 |
100 |
96 |
762 |
764 |
4125 |
8797 |
244 |
| VCDI |
4 |
0 |
0 |
138 |
102 |
971 |
15420 |
18918 |
|
Date: 2024-06-12:
| 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 |
65909 |
20260 |
2435 |
408 |
80 |
27 |
23 |
0 |
| OW |
0 |
689 |
2926 |
2757 |
1002 |
206 |
225 |
12 |
| VODI |
0 |
42 |
539 |
1794 |
2317 |
1291 |
912 |
31 |
| ODI |
0 |
17 |
91 |
614 |
1084 |
2281 |
2369 |
44 |
| CDI |
0 |
1 |
46 |
568 |
639 |
2618 |
13539 |
103 |
| VCDI |
0 |
0 |
0 |
54 |
51 |
195 |
12399 |
17870 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
65909 |
19754 |
1966 |
529 |
124 |
61 |
55 |
0 |
| OW |
0 |
971 |
2173 |
1065 |
576 |
326 |
252 |
4 |
| VODI |
0 |
261 |
1105 |
1978 |
1267 |
742 |
1133 |
41 |
| ODI |
0 |
23 |
667 |
1628 |
2201 |
1933 |
2296 |
86 |
| CDI |
0 |
0 |
126 |
771 |
886 |
3124 |
10855 |
252 |
| VCDI |
0 |
0 |
0 |
224 |
119 |
432 |
14876 |
17677 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66101 |
19261 |
2089 |
392 |
88 |
104 |
93 |
0 |
| OW |
0 |
1243 |
1821 |
1136 |
552 |
331 |
405 |
0 |
| VODI |
0 |
297 |
1488 |
1988 |
1001 |
642 |
1195 |
12 |
| ODI |
0 |
3 |
827 |
1850 |
1915 |
2265 |
2765 |
73 |
| CDI |
0 |
0 |
79 |
618 |
898 |
3276 |
12928 |
364 |
| VCDI |
0 |
0 |
0 |
219 |
131 |
343 |
12620 |
17055 |
|
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