Validation of sea ice concentration - American sector
Bulletin date: 2024-07-25
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-07-19:
| 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 |
5420 |
6420 |
83 |
46 |
2 |
0 |
0 |
0 |
| OW |
3 |
1537 |
264 |
350 |
76 |
7 |
0 |
0 |
| VODI |
3 |
554 |
384 |
1912 |
1033 |
96 |
0 |
0 |
| ODI |
1 |
22 |
47 |
789 |
3411 |
210 |
0 |
0 |
| CDI |
4 |
123 |
21 |
64 |
6689 |
13499 |
325 |
0 |
| VCDI |
0 |
7 |
8 |
43 |
801 |
1439 |
173 |
0 |
|
...date precedes bulletin
|
Date: 2024-07-21:
| 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 |
5662 |
6412 |
43 |
18 |
2 |
0 |
0 |
0 |
| OW |
2 |
1581 |
291 |
391 |
112 |
6 |
0 |
0 |
| VODI |
2 |
705 |
367 |
2399 |
826 |
44 |
0 |
0 |
| ODI |
1 |
42 |
70 |
618 |
2987 |
96 |
0 |
0 |
| CDI |
3 |
134 |
18 |
80 |
6323 |
13015 |
310 |
0 |
| VCDI |
0 |
44 |
13 |
50 |
869 |
2271 |
59 |
0 |
|
...date precedes bulletin
|
Date: 2024-07-23:
| 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 |
5871 |
6953 |
92 |
56 |
8 |
0 |
0 |
0 |
| OW |
2 |
1243 |
406 |
472 |
57 |
5 |
0 |
0 |
| VODI |
2 |
316 |
390 |
2232 |
1096 |
55 |
0 |
0 |
| ODI |
0 |
63 |
14 |
508 |
6098 |
546 |
0 |
0 |
| CDI |
0 |
134 |
15 |
53 |
4964 |
10258 |
958 |
0 |
| VCDI |
0 |
2 |
2 |
25 |
636 |
1179 |
1155 |
0 |
|
...date precedes bulletin
|
Date: 2024-07-25:
| 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 |
6212 |
6823 |
80 |
43 |
8 |
0 |
0 |
0 |
| OW |
4 |
1513 |
385 |
433 |
78 |
17 |
0 |
0 |
| VODI |
0 |
478 |
531 |
2651 |
574 |
53 |
0 |
0 |
| ODI |
0 |
72 |
21 |
719 |
5474 |
1410 |
13 |
0 |
| CDI |
0 |
124 |
10 |
74 |
2547 |
9632 |
2097 |
0 |
| VCDI |
0 |
9 |
5 |
74 |
745 |
1993 |
964 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6212 |
6852 |
94 |
55 |
5 |
0 |
0 |
0 |
| OW |
4 |
1419 |
365 |
467 |
69 |
12 |
0 |
0 |
| VODI |
0 |
524 |
538 |
2468 |
596 |
81 |
0 |
0 |
| ODI |
0 |
67 |
20 |
853 |
5495 |
1410 |
20 |
0 |
| CDI |
0 |
150 |
10 |
76 |
2509 |
8926 |
1998 |
0 |
| VCDI |
0 |
7 |
5 |
75 |
752 |
2676 |
1056 |
0 |
|
Date: 2024-07-27:
| 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 |
6547 |
6654 |
79 |
74 |
13 |
0 |
0 |
0 |
| OW |
2 |
1793 |
413 |
571 |
131 |
14 |
0 |
0 |
| VODI |
2 |
517 |
461 |
2120 |
880 |
160 |
4 |
0 |
| ODI |
0 |
79 |
34 |
703 |
4373 |
1898 |
70 |
0 |
| CDI |
0 |
122 |
29 |
93 |
2427 |
10790 |
2172 |
0 |
| VCDI |
0 |
19 |
17 |
123 |
526 |
1107 |
849 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6548 |
6697 |
92 |
86 |
12 |
0 |
0 |
0 |
| OW |
1 |
1708 |
390 |
509 |
132 |
13 |
0 |
0 |
| VODI |
2 |
537 |
470 |
2102 |
787 |
160 |
4 |
0 |
| ODI |
0 |
79 |
37 |
779 |
4495 |
1976 |
151 |
0 |
| CDI |
0 |
136 |
28 |
87 |
2398 |
10621 |
2156 |
0 |
| VCDI |
0 |
27 |
16 |
121 |
526 |
1199 |
784 |
0 |
|
Date: 2024-07-29:
| 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 |
6355 |
8001 |
103 |
93 |
16 |
0 |
0 |
0 |
| OW |
2 |
1766 |
550 |
542 |
91 |
0 |
0 |
0 |
| VODI |
5 |
227 |
384 |
2336 |
676 |
41 |
0 |
0 |
| ODI |
0 |
88 |
19 |
332 |
5555 |
884 |
2 |
0 |
| CDI |
0 |
52 |
23 |
76 |
735 |
11737 |
1314 |
1 |
| VCDI |
0 |
7 |
17 |
114 |
349 |
817 |
2551 |
5 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6354 |
7182 |
79 |
99 |
23 |
0 |
0 |
0 |
| OW |
2 |
1971 |
368 |
530 |
129 |
7 |
0 |
0 |
| VODI |
0 |
673 |
549 |
1876 |
682 |
167 |
0 |
0 |
| ODI |
6 |
112 |
43 |
755 |
4060 |
1921 |
53 |
1 |
| CDI |
0 |
145 |
27 |
81 |
2119 |
10353 |
3257 |
5 |
| VCDI |
0 |
58 |
30 |
152 |
409 |
1031 |
557 |
0 |
|
Date: 2024-07-31:
| 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 |
7151 |
7599 |
121 |
82 |
6 |
0 |
0 |
0 |
| OW |
17 |
1907 |
485 |
486 |
67 |
11 |
0 |
0 |
| VODI |
15 |
279 |
442 |
2140 |
887 |
39 |
0 |
0 |
| ODI |
8 |
86 |
21 |
236 |
4155 |
1414 |
0 |
0 |
| CDI |
0 |
80 |
35 |
84 |
1852 |
10351 |
2587 |
0 |
| VCDI |
0 |
40 |
28 |
207 |
247 |
1697 |
1004 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7148 |
6674 |
101 |
75 |
9 |
0 |
0 |
0 |
| OW |
6 |
2113 |
396 |
563 |
102 |
18 |
0 |
0 |
| VODI |
7 |
836 |
507 |
1683 |
771 |
135 |
0 |
0 |
| ODI |
22 |
102 |
46 |
581 |
3393 |
2181 |
20 |
0 |
| CDI |
8 |
171 |
34 |
100 |
2657 |
10014 |
3321 |
0 |
| VCDI |
0 |
95 |
48 |
233 |
282 |
1164 |
250 |
0 |
|
Date: 2024-08-02:
| 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 |
8606 |
6512 |
93 |
37 |
2 |
0 |
0 |
0 |
| OW |
67 |
2284 |
433 |
419 |
42 |
0 |
0 |
0 |
| VODI |
46 |
637 |
441 |
2083 |
488 |
54 |
1 |
0 |
| ODI |
18 |
99 |
29 |
509 |
3926 |
687 |
143 |
0 |
| CDI |
0 |
126 |
31 |
100 |
2773 |
9746 |
2342 |
0 |
| VCDI |
0 |
131 |
45 |
152 |
276 |
1137 |
1351 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8450 |
5653 |
98 |
54 |
2 |
0 |
0 |
0 |
| OW |
218 |
2377 |
355 |
446 |
67 |
8 |
1 |
0 |
| VODI |
30 |
1221 |
487 |
1502 |
420 |
148 |
74 |
0 |
| ODI |
27 |
136 |
45 |
1006 |
3174 |
1909 |
91 |
0 |
| CDI |
12 |
210 |
38 |
139 |
3589 |
8869 |
3237 |
0 |
| VCDI |
0 |
192 |
49 |
153 |
255 |
690 |
434 |
0 |
|
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