Validation of sea ice concentration
Bulletin date: 2024-02-22
Model vs. observations, sea ice class contingency tables
Date: 2024-02-16:
| 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 |
55592 |
22692 |
1323 |
247 |
25 |
1 |
6 |
0 |
| OW |
2 |
1948 |
1524 |
735 |
170 |
46 |
15 |
0 |
| VODI |
0 |
706 |
1161 |
968 |
525 |
249 |
108 |
0 |
| ODI |
0 |
196 |
487 |
734 |
731 |
614 |
280 |
0 |
| CDI |
0 |
130 |
521 |
998 |
1216 |
1585 |
3149 |
19 |
| VCDI |
0 |
232 |
787 |
1140 |
1000 |
2337 |
33487 |
20782 |
|
...date precedes bulletin
|
Date: 2024-02-20:
| 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 |
51170 |
23703 |
2728 |
1028 |
34 |
7 |
0 |
0 |
| OW |
0 |
734 |
1786 |
1685 |
281 |
26 |
10 |
0 |
| VODI |
0 |
239 |
898 |
1538 |
1052 |
405 |
110 |
0 |
| ODI |
0 |
94 |
243 |
903 |
966 |
969 |
504 |
13 |
| CDI |
0 |
0 |
310 |
900 |
1461 |
2713 |
5063 |
60 |
| VCDI |
0 |
0 |
51 |
725 |
1209 |
4670 |
30430 |
19750 |
|
...date precedes bulletin
|
Date: 2024-02-22:
| 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 |
53897 |
22586 |
2381 |
278 |
63 |
2 |
0 |
0 |
| OW |
0 |
564 |
2134 |
805 |
430 |
91 |
4 |
0 |
| VODI |
0 |
131 |
1077 |
916 |
628 |
476 |
88 |
0 |
| ODI |
0 |
62 |
388 |
639 |
715 |
840 |
446 |
0 |
| CDI |
0 |
60 |
264 |
610 |
879 |
2661 |
5889 |
13 |
| VCDI |
0 |
40 |
209 |
296 |
862 |
2806 |
30691 |
23547 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
53897 |
22514 |
2422 |
296 |
57 |
1 |
1 |
0 |
| OW |
0 |
630 |
2059 |
802 |
428 |
97 |
4 |
0 |
| VODI |
0 |
135 |
1079 |
932 |
679 |
477 |
103 |
0 |
| ODI |
0 |
65 |
382 |
617 |
665 |
792 |
472 |
0 |
| CDI |
0 |
62 |
290 |
596 |
911 |
2701 |
5890 |
12 |
| VCDI |
0 |
37 |
221 |
301 |
837 |
2808 |
30648 |
23548 |
|
Date: 2024-02-26:
| 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 |
55897 |
22081 |
2486 |
275 |
84 |
19 |
16 |
0 |
| OW |
4 |
785 |
2710 |
881 |
295 |
142 |
56 |
0 |
| VODI |
0 |
141 |
1127 |
911 |
683 |
459 |
274 |
0 |
| ODI |
0 |
88 |
478 |
477 |
746 |
585 |
636 |
0 |
| CDI |
0 |
139 |
705 |
786 |
888 |
2080 |
5659 |
13 |
| VCDI |
0 |
1 |
290 |
890 |
475 |
1346 |
29694 |
23166 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55901 |
21602 |
1850 |
197 |
73 |
16 |
6 |
0 |
| OW |
0 |
915 |
1874 |
528 |
236 |
85 |
41 |
0 |
| VODI |
0 |
270 |
1528 |
701 |
393 |
293 |
239 |
0 |
| ODI |
0 |
137 |
894 |
702 |
533 |
411 |
697 |
0 |
| CDI |
0 |
174 |
868 |
872 |
1218 |
1917 |
6053 |
51 |
| VCDI |
0 |
137 |
782 |
1220 |
718 |
1909 |
29299 |
23128 |
|
Date: 2024-02-28:
| 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 |
57589 |
21693 |
1789 |
178 |
27 |
6 |
7 |
0 |
| OW |
8 |
1058 |
2047 |
892 |
130 |
65 |
41 |
0 |
| VODI |
0 |
222 |
1141 |
1183 |
416 |
174 |
205 |
0 |
| ODI |
0 |
123 |
487 |
832 |
539 |
474 |
383 |
4 |
| CDI |
0 |
143 |
564 |
1175 |
696 |
1422 |
4887 |
16 |
| VCDI |
0 |
19 |
514 |
1033 |
682 |
1314 |
34760 |
19530 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
57538 |
20683 |
989 |
195 |
28 |
7 |
8 |
0 |
| OW |
59 |
1353 |
1466 |
469 |
128 |
30 |
44 |
0 |
| VODI |
0 |
581 |
1503 |
721 |
341 |
171 |
184 |
0 |
| ODI |
0 |
229 |
923 |
954 |
370 |
197 |
510 |
4 |
| CDI |
0 |
360 |
856 |
1600 |
802 |
1322 |
4905 |
49 |
| VCDI |
0 |
52 |
805 |
1354 |
821 |
1728 |
34632 |
19497 |
|
Date: 2024-03-01:
| 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 |
58840 |
21621 |
862 |
292 |
3 |
3 |
6 |
0 |
| OW |
0 |
1798 |
1199 |
729 |
84 |
25 |
54 |
0 |
| VODI |
0 |
642 |
1257 |
1080 |
287 |
87 |
131 |
0 |
| ODI |
0 |
281 |
733 |
930 |
524 |
197 |
254 |
0 |
| CDI |
0 |
271 |
982 |
1288 |
1081 |
1387 |
3606 |
0 |
| VCDI |
0 |
86 |
623 |
1213 |
881 |
1959 |
36678 |
16494 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58840 |
19734 |
393 |
237 |
21 |
11 |
0 |
0 |
| OW |
0 |
2380 |
630 |
444 |
51 |
42 |
37 |
0 |
| VODI |
0 |
1186 |
1241 |
815 |
235 |
107 |
232 |
0 |
| ODI |
0 |
551 |
1076 |
964 |
378 |
150 |
422 |
0 |
| CDI |
0 |
519 |
1342 |
1487 |
989 |
867 |
3851 |
1 |
| VCDI |
0 |
329 |
974 |
1585 |
1186 |
2481 |
36187 |
16493 |
|
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