Validation of sea ice concentration
Bulletin date: 2024-07-04
Model vs. observations, sea ice class contingency tables
Date: 2024-06-28:
| 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 |
71098 |
22742 |
4722 |
919 |
302 |
101 |
66 |
0 |
| OW |
4 |
296 |
1706 |
1739 |
462 |
270 |
302 |
0 |
| VODI |
0 |
73 |
333 |
1716 |
1501 |
725 |
1034 |
0 |
| ODI |
0 |
33 |
96 |
708 |
1368 |
2027 |
3619 |
0 |
| CDI |
0 |
30 |
58 |
269 |
514 |
1373 |
16044 |
9068 |
| VCDI |
0 |
0 |
0 |
5 |
182 |
194 |
7871 |
4898 |
|
...date precedes bulletin
|
Date: 2024-07-02:
| 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 |
72049 |
21479 |
6218 |
896 |
200 |
46 |
80 |
0 |
| OW |
0 |
231 |
2205 |
1921 |
611 |
121 |
220 |
0 |
| VODI |
0 |
0 |
468 |
2455 |
2346 |
961 |
957 |
1 |
| ODI |
0 |
0 |
74 |
863 |
1443 |
2870 |
4636 |
3 |
| CDI |
0 |
0 |
1 |
283 |
448 |
1479 |
16169 |
8890 |
| VCDI |
0 |
0 |
0 |
171 |
54 |
64 |
4703 |
2852 |
|
...date precedes bulletin
|
Date: 2024-07-04:
| 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 |
72587 |
21811 |
5579 |
1270 |
211 |
44 |
46 |
0 |
| OW |
0 |
221 |
1536 |
2464 |
681 |
176 |
233 |
0 |
| VODI |
0 |
5 |
403 |
2334 |
2147 |
1099 |
1195 |
0 |
| ODI |
0 |
0 |
33 |
712 |
1243 |
2752 |
4940 |
0 |
| CDI |
0 |
0 |
0 |
470 |
587 |
1656 |
18934 |
7756 |
| VCDI |
0 |
0 |
0 |
171 |
34 |
59 |
2628 |
2451 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72587 |
21856 |
5540 |
1237 |
190 |
39 |
44 |
0 |
| OW |
0 |
181 |
1547 |
2499 |
714 |
169 |
219 |
0 |
| VODI |
0 |
0 |
419 |
2299 |
2101 |
1113 |
1134 |
0 |
| ODI |
0 |
0 |
45 |
708 |
1206 |
2784 |
5115 |
0 |
| CDI |
0 |
0 |
0 |
488 |
620 |
1606 |
19045 |
7679 |
| VCDI |
0 |
0 |
0 |
190 |
72 |
75 |
2419 |
2528 |
|
Date: 2024-07-08:
| 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 |
73698 |
24509 |
4756 |
980 |
72 |
28 |
38 |
0 |
| OW |
0 |
49 |
2183 |
2764 |
694 |
221 |
251 |
0 |
| VODI |
0 |
0 |
423 |
2470 |
2551 |
1935 |
1424 |
0 |
| ODI |
0 |
0 |
14 |
571 |
1519 |
2726 |
5667 |
19 |
| CDI |
0 |
0 |
211 |
198 |
361 |
1355 |
15848 |
8618 |
| VCDI |
0 |
0 |
0 |
135 |
47 |
30 |
753 |
1350 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
73698 |
24074 |
3941 |
867 |
75 |
26 |
28 |
0 |
| OW |
0 |
460 |
2405 |
2068 |
452 |
173 |
216 |
0 |
| VODI |
0 |
24 |
924 |
2622 |
1939 |
1291 |
985 |
0 |
| ODI |
0 |
0 |
108 |
965 |
1938 |
2633 |
3722 |
46 |
| CDI |
0 |
0 |
209 |
507 |
778 |
2109 |
18674 |
6857 |
| VCDI |
0 |
0 |
0 |
89 |
62 |
63 |
356 |
3084 |
|
Date: 2024-07-10:
| 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 |
75083 |
24128 |
3829 |
1292 |
50 |
13 |
43 |
0 |
| OW |
0 |
399 |
2050 |
3443 |
565 |
164 |
233 |
0 |
| VODI |
0 |
79 |
323 |
3476 |
3163 |
1329 |
1218 |
0 |
| ODI |
0 |
0 |
18 |
694 |
1522 |
2392 |
4945 |
119 |
| CDI |
0 |
0 |
325 |
208 |
434 |
1449 |
15787 |
9198 |
| VCDI |
0 |
0 |
16 |
77 |
16 |
16 |
372 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
75083 |
23465 |
3047 |
1190 |
59 |
25 |
48 |
0 |
| OW |
0 |
833 |
1881 |
2656 |
589 |
180 |
204 |
0 |
| VODI |
0 |
268 |
1015 |
3148 |
2026 |
1081 |
1005 |
2 |
| ODI |
0 |
40 |
281 |
1206 |
1855 |
2167 |
3302 |
8 |
| CDI |
0 |
0 |
336 |
898 |
1177 |
1877 |
17809 |
7682 |
| VCDI |
0 |
0 |
1 |
92 |
44 |
33 |
230 |
1625 |
|
Date: 2024-07-12:
| 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 |
78418 |
20726 |
4336 |
960 |
124 |
40 |
65 |
0 |
| OW |
0 |
474 |
2232 |
3336 |
1223 |
289 |
268 |
0 |
| VODI |
0 |
68 |
618 |
2714 |
3001 |
1561 |
1374 |
0 |
| ODI |
0 |
0 |
69 |
833 |
1604 |
2140 |
5507 |
138 |
| CDI |
0 |
0 |
325 |
246 |
480 |
877 |
14430 |
9374 |
| VCDI |
0 |
0 |
1 |
80 |
27 |
133 |
377 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
78418 |
20033 |
3282 |
935 |
121 |
34 |
51 |
0 |
| OW |
0 |
663 |
2397 |
2260 |
986 |
287 |
240 |
0 |
| VODI |
0 |
429 |
1096 |
2879 |
2268 |
1101 |
954 |
0 |
| ODI |
0 |
143 |
496 |
1138 |
2026 |
2152 |
3375 |
8 |
| CDI |
0 |
0 |
310 |
828 |
1010 |
1402 |
17181 |
8210 |
| VCDI |
0 |
0 |
0 |
129 |
48 |
64 |
220 |
1294 |
|
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