Validation of sea ice concentration
Bulletin date: 2024-02-15
Model vs. observations, sea ice class contingency tables
Date: 2024-02-09:
| 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 |
51535 |
25276 |
2824 |
988 |
333 |
22 |
3 |
0 |
| OW |
0 |
823 |
2305 |
804 |
293 |
91 |
98 |
0 |
| VODI |
0 |
191 |
991 |
1348 |
730 |
258 |
269 |
0 |
| ODI |
0 |
161 |
136 |
931 |
751 |
735 |
593 |
21 |
| CDI |
0 |
141 |
102 |
809 |
729 |
1451 |
3492 |
155 |
| VCDI |
0 |
402 |
466 |
677 |
831 |
3953 |
30419 |
22331 |
|
...date precedes bulletin
|
Date: 2024-02-13:
| 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 |
51067 |
24715 |
3092 |
872 |
393 |
36 |
12 |
0 |
| OW |
0 |
689 |
2046 |
1115 |
391 |
115 |
23 |
0 |
| VODI |
0 |
168 |
842 |
1164 |
1060 |
671 |
126 |
0 |
| ODI |
0 |
22 |
232 |
415 |
705 |
1026 |
438 |
0 |
| CDI |
0 |
42 |
216 |
425 |
833 |
2342 |
4149 |
42 |
| VCDI |
0 |
14 |
298 |
324 |
501 |
1795 |
29681 |
26371 |
|
...date precedes bulletin
|
Date: 2024-02-15:
| 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 |
55818 |
22614 |
1356 |
274 |
46 |
18 |
3 |
0 |
| OW |
0 |
2015 |
1635 |
645 |
88 |
40 |
17 |
0 |
| VODI |
0 |
643 |
1110 |
1544 |
325 |
115 |
94 |
0 |
| ODI |
0 |
189 |
387 |
990 |
539 |
314 |
318 |
0 |
| CDI |
0 |
133 |
332 |
1029 |
1198 |
1510 |
2979 |
0 |
| VCDI |
0 |
192 |
506 |
1157 |
915 |
2417 |
33601 |
21362 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55818 |
22895 |
1411 |
292 |
50 |
25 |
5 |
0 |
| OW |
0 |
1815 |
1644 |
676 |
93 |
48 |
25 |
0 |
| VODI |
0 |
592 |
1083 |
1567 |
289 |
113 |
132 |
0 |
| ODI |
0 |
168 |
368 |
949 |
529 |
308 |
318 |
0 |
| CDI |
0 |
130 |
314 |
962 |
1209 |
1487 |
2994 |
0 |
| VCDI |
0 |
186 |
506 |
1193 |
941 |
2433 |
33538 |
21362 |
|
Date: 2024-02-19:
| 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 |
51368 |
23848 |
2444 |
962 |
54 |
3 |
0 |
0 |
| OW |
0 |
896 |
2039 |
1685 |
296 |
21 |
8 |
0 |
| VODI |
0 |
200 |
805 |
1865 |
1114 |
393 |
117 |
0 |
| ODI |
0 |
4 |
200 |
971 |
1436 |
1129 |
347 |
16 |
| CDI |
0 |
0 |
184 |
813 |
1890 |
2981 |
4440 |
131 |
| VCDI |
0 |
0 |
36 |
676 |
1133 |
5186 |
30548 |
18229 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
51368 |
23369 |
2202 |
1006 |
73 |
3 |
0 |
0 |
| OW |
0 |
947 |
1454 |
1161 |
266 |
30 |
4 |
0 |
| VODI |
0 |
464 |
1026 |
1494 |
790 |
305 |
101 |
0 |
| ODI |
0 |
117 |
461 |
1109 |
1327 |
891 |
326 |
26 |
| CDI |
0 |
48 |
295 |
948 |
1841 |
2585 |
4001 |
137 |
| VCDI |
0 |
3 |
270 |
1254 |
1626 |
5899 |
31028 |
18213 |
|
Date: 2024-02-21:
| 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 |
52771 |
22901 |
2668 |
483 |
67 |
22 |
2 |
0 |
| OW |
0 |
565 |
1975 |
1112 |
482 |
63 |
6 |
0 |
| VODI |
0 |
206 |
785 |
1154 |
1036 |
530 |
69 |
0 |
| ODI |
0 |
92 |
290 |
519 |
851 |
958 |
451 |
7 |
| CDI |
0 |
73 |
195 |
471 |
956 |
3123 |
5738 |
95 |
| VCDI |
0 |
7 |
153 |
372 |
1049 |
3287 |
29266 |
23618 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
52771 |
22151 |
2219 |
475 |
104 |
26 |
2 |
0 |
| OW |
0 |
972 |
1421 |
782 |
399 |
78 |
0 |
0 |
| VODI |
0 |
441 |
1203 |
910 |
736 |
501 |
50 |
0 |
| ODI |
0 |
120 |
562 |
728 |
855 |
929 |
361 |
14 |
| CDI |
0 |
139 |
462 |
734 |
1039 |
2816 |
5717 |
58 |
| VCDI |
0 |
21 |
199 |
482 |
1308 |
3633 |
29402 |
23648 |
|
Date: 2024-02-23:
| 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 |
54902 |
22218 |
2018 |
246 |
68 |
0 |
0 |
0 |
| OW |
0 |
454 |
2218 |
862 |
266 |
63 |
25 |
0 |
| VODI |
0 |
145 |
1294 |
878 |
436 |
331 |
97 |
0 |
| ODI |
0 |
66 |
471 |
814 |
577 |
864 |
471 |
0 |
| CDI |
0 |
56 |
307 |
783 |
776 |
1920 |
5294 |
21 |
| VCDI |
0 |
39 |
262 |
434 |
971 |
3036 |
30950 |
23835 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
54902 |
20990 |
1866 |
364 |
121 |
16 |
1 |
0 |
| OW |
0 |
1165 |
1368 |
642 |
265 |
110 |
13 |
0 |
| VODI |
0 |
511 |
1511 |
793 |
415 |
359 |
108 |
0 |
| ODI |
0 |
159 |
806 |
614 |
341 |
657 |
412 |
0 |
| CDI |
0 |
105 |
647 |
834 |
799 |
1784 |
4754 |
22 |
| VCDI |
0 |
48 |
372 |
770 |
1153 |
3288 |
31549 |
23834 |
|
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