Validation of sea ice concentration
Bulletin date: 2024-02-29
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2024-02-27:
| 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 |
55995 |
22498 |
2029 |
328 |
99 |
27 |
14 |
0 |
| OW |
0 |
715 |
2489 |
898 |
305 |
162 |
78 |
0 |
| VODI |
0 |
198 |
978 |
983 |
589 |
403 |
263 |
0 |
| ODI |
0 |
122 |
475 |
508 |
652 |
639 |
549 |
2 |
| CDI |
0 |
165 |
641 |
798 |
628 |
2127 |
5662 |
131 |
| VCDI |
0 |
16 |
505 |
876 |
481 |
1426 |
33316 |
19698 |
|
...date precedes bulletin
|
Date: 2024-02-29:
| 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 |
58227 |
21598 |
1485 |
302 |
18 |
4 |
2 |
0 |
| OW |
0 |
1374 |
1513 |
812 |
94 |
54 |
51 |
0 |
| VODI |
0 |
433 |
1249 |
1186 |
321 |
107 |
148 |
0 |
| ODI |
0 |
204 |
625 |
933 |
589 |
218 |
320 |
0 |
| CDI |
0 |
169 |
784 |
979 |
993 |
1412 |
3558 |
0 |
| VCDI |
0 |
47 |
660 |
1220 |
795 |
1610 |
35756 |
18618 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58227 |
21746 |
1579 |
338 |
26 |
12 |
8 |
0 |
| OW |
0 |
1249 |
1424 |
776 |
97 |
50 |
49 |
0 |
| VODI |
0 |
408 |
1211 |
1174 |
297 |
104 |
158 |
0 |
| ODI |
0 |
186 |
598 |
937 |
583 |
220 |
316 |
0 |
| CDI |
0 |
197 |
783 |
977 |
994 |
1369 |
3602 |
0 |
| VCDI |
0 |
39 |
721 |
1230 |
813 |
1650 |
35702 |
18618 |
|
Date: 2024-03-04:
| 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 |
56855 |
21889 |
1729 |
498 |
61 |
2 |
1 |
0 |
| OW |
6 |
924 |
1596 |
1346 |
185 |
21 |
15 |
0 |
| VODI |
0 |
219 |
746 |
1952 |
688 |
320 |
145 |
0 |
| ODI |
0 |
120 |
285 |
1174 |
880 |
1031 |
522 |
16 |
| CDI |
0 |
52 |
302 |
1111 |
1238 |
2667 |
5152 |
42 |
| VCDI |
0 |
0 |
11 |
269 |
385 |
3357 |
29015 |
21641 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
56861 |
21502 |
1341 |
469 |
68 |
2 |
5 |
0 |
| OW |
0 |
929 |
1270 |
832 |
270 |
62 |
30 |
0 |
| VODI |
0 |
363 |
979 |
1423 |
450 |
247 |
140 |
0 |
| ODI |
0 |
210 |
377 |
1246 |
569 |
661 |
400 |
5 |
| CDI |
0 |
173 |
494 |
1672 |
1369 |
2088 |
4457 |
39 |
| VCDI |
0 |
27 |
208 |
708 |
711 |
4338 |
29818 |
21655 |
|
Date: 2024-03-06:
| 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 |
57291 |
21493 |
1905 |
159 |
20 |
2 |
0 |
0 |
| OW |
0 |
607 |
1877 |
762 |
283 |
43 |
28 |
0 |
| VODI |
0 |
196 |
1101 |
1046 |
1005 |
369 |
184 |
0 |
| ODI |
0 |
32 |
455 |
897 |
1040 |
987 |
679 |
1 |
| CDI |
0 |
3 |
303 |
823 |
1244 |
2578 |
6839 |
38 |
| VCDI |
0 |
0 |
61 |
167 |
365 |
2816 |
33926 |
16843 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
57291 |
20620 |
1255 |
205 |
57 |
4 |
1 |
0 |
| OW |
0 |
1121 |
1293 |
422 |
356 |
78 |
28 |
0 |
| VODI |
0 |
442 |
1435 |
787 |
765 |
314 |
121 |
0 |
| ODI |
0 |
111 |
797 |
688 |
683 |
798 |
482 |
0 |
| CDI |
0 |
36 |
672 |
1193 |
1305 |
2112 |
5617 |
3 |
| VCDI |
0 |
1 |
250 |
559 |
791 |
3489 |
35407 |
16879 |
|
Date: 2024-03-08:
| 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 |
57669 |
20655 |
1267 |
112 |
13 |
1 |
2 |
0 |
| OW |
0 |
1109 |
1633 |
789 |
203 |
74 |
24 |
0 |
| VODI |
0 |
430 |
1157 |
1055 |
865 |
602 |
118 |
0 |
| ODI |
0 |
91 |
629 |
723 |
812 |
1439 |
645 |
23 |
| CDI |
0 |
28 |
480 |
650 |
961 |
2262 |
8214 |
157 |
| VCDI |
0 |
6 |
100 |
206 |
389 |
1002 |
26270 |
25603 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
57669 |
19515 |
1163 |
209 |
74 |
16 |
4 |
0 |
| OW |
0 |
1531 |
1004 |
512 |
244 |
138 |
26 |
0 |
| VODI |
0 |
839 |
1200 |
712 |
607 |
589 |
146 |
0 |
| ODI |
0 |
266 |
743 |
597 |
536 |
1212 |
487 |
0 |
| CDI |
0 |
145 |
819 |
1036 |
1144 |
2015 |
5298 |
36 |
| VCDI |
0 |
23 |
337 |
469 |
638 |
1410 |
29312 |
25747 |
|
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