Validation of sea ice concentration - Full domain
Bulletin date: 2023-12-14
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-12-08:
| 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 |
71653 |
14071 |
394 |
411 |
152 |
52 |
2 |
0 |
| OW |
1040 |
1805 |
417 |
621 |
387 |
85 |
0 |
0 |
| VODI |
2409 |
639 |
260 |
1135 |
678 |
389 |
14 |
0 |
| ODI |
1231 |
84 |
53 |
303 |
643 |
900 |
158 |
0 |
| CDI |
0 |
89 |
28 |
124 |
498 |
2120 |
956 |
0 |
| VCDI |
0 |
113 |
48 |
158 |
301 |
3153 |
28693 |
44543 |
|
...date precedes bulletin
|
Date: 2023-12-10:
| 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 |
70113 |
13789 |
524 |
680 |
131 |
22 |
13 |
0 |
| OW |
1031 |
1854 |
326 |
868 |
526 |
50 |
11 |
0 |
| VODI |
2405 |
643 |
238 |
633 |
1270 |
310 |
26 |
0 |
| ODI |
1047 |
140 |
69 |
315 |
756 |
970 |
116 |
0 |
| CDI |
0 |
147 |
54 |
192 |
656 |
2327 |
1329 |
0 |
| VCDI |
0 |
125 |
59 |
233 |
509 |
2914 |
26878 |
46511 |
|
...date precedes bulletin
|
Date: 2023-12-12:
| 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 |
68879 |
14074 |
461 |
623 |
251 |
11 |
0 |
0 |
| OW |
1131 |
1682 |
367 |
734 |
447 |
47 |
1 |
0 |
| VODI |
2347 |
590 |
322 |
996 |
793 |
168 |
8 |
0 |
| ODI |
1136 |
122 |
79 |
414 |
970 |
529 |
34 |
0 |
| CDI |
0 |
133 |
61 |
246 |
802 |
2759 |
953 |
0 |
| VCDI |
0 |
66 |
57 |
191 |
654 |
4199 |
26430 |
47043 |
|
...date precedes bulletin
|
Date: 2023-12-14:
| 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 |
67963 |
13311 |
332 |
638 |
337 |
10 |
1 |
0 |
| OW |
846 |
1865 |
343 |
582 |
579 |
130 |
2 |
0 |
| VODI |
2140 |
787 |
324 |
747 |
1050 |
397 |
3 |
0 |
| ODI |
1467 |
182 |
109 |
512 |
756 |
719 |
21 |
0 |
| CDI |
0 |
158 |
108 |
452 |
1018 |
2108 |
992 |
0 |
| VCDI |
0 |
73 |
35 |
142 |
813 |
5942 |
25151 |
47665 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67962 |
13235 |
337 |
650 |
389 |
36 |
1 |
0 |
| OW |
847 |
1921 |
334 |
530 |
519 |
114 |
2 |
0 |
| VODI |
2143 |
801 |
327 |
783 |
1055 |
396 |
6 |
0 |
| ODI |
1464 |
202 |
121 |
560 |
737 |
747 |
21 |
0 |
| CDI |
0 |
147 |
96 |
399 |
1031 |
2118 |
966 |
0 |
| VCDI |
0 |
70 |
36 |
151 |
822 |
5895 |
25174 |
47665 |
|
Date: 2023-12-16:
| 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 |
67607 |
12459 |
894 |
382 |
451 |
69 |
5 |
0 |
| OW |
900 |
1556 |
356 |
458 |
415 |
176 |
20 |
0 |
| VODI |
2220 |
1026 |
251 |
757 |
1083 |
518 |
67 |
0 |
| ODI |
1264 |
361 |
124 |
358 |
955 |
728 |
94 |
0 |
| CDI |
0 |
297 |
126 |
479 |
988 |
2053 |
1205 |
14 |
| VCDI |
0 |
141 |
50 |
157 |
878 |
6183 |
24050 |
48635 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67606 |
12522 |
906 |
399 |
486 |
76 |
7 |
0 |
| OW |
901 |
1497 |
353 |
422 |
348 |
195 |
29 |
0 |
| VODI |
2218 |
1006 |
227 |
735 |
1048 |
498 |
70 |
0 |
| ODI |
1266 |
389 |
141 |
433 |
973 |
707 |
80 |
0 |
| CDI |
0 |
293 |
122 |
440 |
976 |
2106 |
1168 |
12 |
| VCDI |
0 |
133 |
52 |
162 |
939 |
6145 |
24087 |
48637 |
|
Date: 2023-12-18:
| 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 |
68021 |
12080 |
203 |
286 |
178 |
229 |
7 |
0 |
| OW |
816 |
1758 |
292 |
285 |
138 |
169 |
6 |
0 |
| VODI |
2038 |
605 |
438 |
1206 |
458 |
263 |
18 |
0 |
| ODI |
1599 |
87 |
92 |
585 |
1125 |
836 |
27 |
0 |
| CDI |
0 |
103 |
66 |
312 |
887 |
3349 |
670 |
32 |
| VCDI |
0 |
32 |
23 |
66 |
470 |
6629 |
21744 |
52582 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68013 |
11667 |
218 |
323 |
261 |
485 |
3 |
0 |
| OW |
827 |
1433 |
233 |
338 |
196 |
362 |
16 |
0 |
| VODI |
2046 |
862 |
263 |
694 |
586 |
670 |
60 |
0 |
| ODI |
1588 |
334 |
204 |
724 |
665 |
1013 |
142 |
0 |
| CDI |
0 |
271 |
126 |
467 |
892 |
2375 |
1285 |
0 |
| VCDI |
0 |
98 |
70 |
194 |
656 |
6570 |
20966 |
52614 |
|
Date: 2023-12-20:
| 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 |
67250 |
11915 |
218 |
205 |
167 |
163 |
0 |
0 |
| OW |
809 |
1383 |
267 |
496 |
224 |
195 |
0 |
0 |
| VODI |
1983 |
482 |
300 |
805 |
651 |
313 |
6 |
0 |
| ODI |
1665 |
81 |
77 |
593 |
1133 |
867 |
85 |
0 |
| CDI |
0 |
37 |
42 |
262 |
1004 |
2727 |
830 |
7 |
| VCDI |
0 |
27 |
27 |
139 |
664 |
6532 |
25838 |
50341 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67226 |
11176 |
204 |
235 |
219 |
446 |
4 |
0 |
| OW |
833 |
1398 |
205 |
385 |
257 |
338 |
55 |
0 |
| VODI |
1984 |
882 |
222 |
506 |
434 |
472 |
211 |
0 |
| ODI |
1664 |
268 |
158 |
643 |
974 |
910 |
330 |
0 |
| CDI |
0 |
121 |
89 |
469 |
1062 |
1987 |
1186 |
0 |
| VCDI |
0 |
80 |
53 |
262 |
897 |
6644 |
24973 |
50348 |
|
Date: 2023-12-22:
| 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 |
66232 |
11806 |
211 |
201 |
125 |
88 |
0 |
0 |
| OW |
804 |
1357 |
252 |
372 |
256 |
168 |
6 |
0 |
| VODI |
1937 |
580 |
263 |
663 |
599 |
230 |
69 |
0 |
| ODI |
1725 |
123 |
101 |
548 |
1211 |
516 |
121 |
0 |
| CDI |
0 |
29 |
54 |
358 |
1228 |
2625 |
1336 |
1 |
| VCDI |
0 |
8 |
17 |
150 |
654 |
6709 |
27449 |
49628 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66191 |
11044 |
189 |
257 |
110 |
178 |
0 |
0 |
| OW |
845 |
1486 |
208 |
322 |
365 |
369 |
90 |
0 |
| VODI |
1937 |
924 |
221 |
444 |
580 |
436 |
198 |
0 |
| ODI |
1725 |
291 |
133 |
493 |
973 |
627 |
420 |
0 |
| CDI |
0 |
107 |
115 |
521 |
1171 |
1678 |
1284 |
13 |
| VCDI |
0 |
51 |
32 |
255 |
874 |
7048 |
26989 |
49616 |
|
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