Validation of sea ice concentration
Bulletin date: 2024-07-25
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 |
80930 |
18745 |
7645 |
3209 |
224 |
42 |
88 |
0 |
| OW |
0 |
342 |
2685 |
4132 |
692 |
164 |
273 |
0 |
| VODI |
0 |
1 |
819 |
3312 |
2399 |
1519 |
1074 |
0 |
| ODI |
0 |
0 |
313 |
1077 |
1631 |
1635 |
1381 |
4 |
| CDI |
0 |
0 |
104 |
264 |
285 |
1084 |
11304 |
9424 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
38 |
676 |
950 |
|
...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 |
82530 |
17084 |
12491 |
3583 |
281 |
47 |
79 |
0 |
| OW |
0 |
78 |
1944 |
3320 |
813 |
141 |
174 |
0 |
| VODI |
0 |
0 |
612 |
2772 |
2633 |
1071 |
666 |
3 |
| ODI |
0 |
0 |
239 |
584 |
998 |
1742 |
1938 |
21 |
| CDI |
0 |
0 |
151 |
181 |
74 |
163 |
8028 |
11089 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
1155 |
1783 |
|
...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 |
84045 |
18388 |
11665 |
2895 |
282 |
82 |
90 |
0 |
| OW |
0 |
32 |
2299 |
2873 |
930 |
294 |
183 |
0 |
| VODI |
0 |
0 |
525 |
2967 |
1856 |
1145 |
883 |
6 |
| ODI |
0 |
0 |
214 |
624 |
826 |
1319 |
1877 |
70 |
| CDI |
0 |
0 |
102 |
156 |
59 |
240 |
8105 |
11075 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
977 |
1384 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
84045 |
18390 |
11753 |
3029 |
316 |
96 |
87 |
0 |
| OW |
0 |
30 |
2315 |
2824 |
935 |
282 |
225 |
0 |
| VODI |
0 |
0 |
447 |
2893 |
1929 |
1122 |
896 |
12 |
| ODI |
0 |
0 |
186 |
601 |
710 |
1284 |
1797 |
89 |
| CDI |
0 |
0 |
104 |
168 |
63 |
296 |
8167 |
11008 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
943 |
1426 |
|
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 |
87614 |
17277 |
14712 |
2442 |
247 |
67 |
85 |
0 |
| OW |
0 |
365 |
1906 |
2832 |
743 |
121 |
202 |
0 |
| VODI |
0 |
2 |
610 |
2403 |
1917 |
957 |
580 |
3 |
| ODI |
0 |
14 |
253 |
321 |
392 |
1163 |
5308 |
48 |
| CDI |
0 |
0 |
41 |
11 |
23 |
46 |
6208 |
8505 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
648 |
402 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
87614 |
17205 |
13405 |
1695 |
162 |
57 |
90 |
0 |
| OW |
0 |
289 |
2872 |
2764 |
565 |
115 |
241 |
0 |
| VODI |
0 |
149 |
827 |
2674 |
1765 |
557 |
616 |
3 |
| ODI |
0 |
5 |
372 |
711 |
661 |
988 |
1368 |
26 |
| CDI |
0 |
10 |
46 |
158 |
166 |
630 |
10026 |
8721 |
| VCDI |
0 |
0 |
0 |
7 |
3 |
7 |
690 |
208 |
|
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 |
88271 |
16686 |
15725 |
2668 |
467 |
75 |
125 |
0 |
| OW |
0 |
281 |
1920 |
2047 |
831 |
248 |
230 |
0 |
| VODI |
0 |
0 |
540 |
1508 |
1855 |
1739 |
730 |
0 |
| ODI |
0 |
0 |
165 |
260 |
462 |
1146 |
5033 |
45 |
| CDI |
0 |
0 |
3 |
17 |
9 |
92 |
6818 |
7754 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
486 |
232 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
88271 |
16533 |
14279 |
1703 |
229 |
76 |
110 |
0 |
| OW |
0 |
271 |
2939 |
2396 |
758 |
171 |
300 |
0 |
| VODI |
0 |
163 |
847 |
1628 |
1763 |
1303 |
655 |
0 |
| ODI |
0 |
0 |
286 |
634 |
643 |
944 |
2007 |
70 |
| CDI |
0 |
0 |
2 |
133 |
229 |
802 |
9639 |
7619 |
| VCDI |
0 |
0 |
0 |
6 |
2 |
4 |
711 |
342 |
|
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 |
88220 |
17609 |
16124 |
2083 |
750 |
65 |
92 |
0 |
| OW |
0 |
412 |
1459 |
1606 |
1152 |
280 |
201 |
0 |
| VODI |
0 |
18 |
630 |
1612 |
1854 |
1375 |
661 |
0 |
| ODI |
0 |
0 |
58 |
278 |
511 |
1803 |
4110 |
0 |
| CDI |
0 |
0 |
0 |
16 |
32 |
379 |
10952 |
3749 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
377 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
88220 |
17435 |
14590 |
1406 |
394 |
54 |
78 |
0 |
| OW |
0 |
391 |
2727 |
1801 |
1142 |
156 |
184 |
0 |
| VODI |
0 |
213 |
735 |
1683 |
1842 |
1129 |
539 |
0 |
| ODI |
0 |
0 |
212 |
601 |
671 |
1220 |
2420 |
0 |
| CDI |
0 |
0 |
7 |
103 |
249 |
1332 |
12735 |
3749 |
| VCDI |
0 |
0 |
0 |
1 |
1 |
11 |
437 |
0 |
|
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