Validation of sea ice concentration - Asian sector
Bulletin date: 2023-10-19
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-10-13:
| 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 |
8858 |
5930 |
259 |
390 |
49 |
0 |
0 |
0 |
| OW |
66 |
811 |
97 |
430 |
138 |
0 |
0 |
0 |
| VODI |
14 |
208 |
63 |
502 |
391 |
24 |
0 |
0 |
| ODI |
0 |
6 |
0 |
58 |
354 |
102 |
0 |
0 |
| CDI |
0 |
0 |
0 |
25 |
324 |
328 |
13 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
120 |
1699 |
5088 |
6749 |
|
...date precedes bulletin
|
Date: 2023-10-15:
| 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 |
6294 |
7177 |
410 |
497 |
28 |
0 |
0 |
0 |
| OW |
76 |
598 |
132 |
623 |
215 |
11 |
0 |
0 |
| VODI |
17 |
161 |
98 |
638 |
666 |
56 |
0 |
0 |
| ODI |
1 |
6 |
2 |
80 |
395 |
200 |
0 |
0 |
| CDI |
0 |
0 |
0 |
29 |
284 |
459 |
3 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
219 |
1521 |
4770 |
7429 |
|
...date precedes bulletin
|
Date: 2023-10-17:
| 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 |
4196 |
7156 |
704 |
851 |
54 |
0 |
0 |
0 |
| OW |
32 |
560 |
121 |
691 |
175 |
8 |
0 |
0 |
| VODI |
0 |
74 |
38 |
526 |
558 |
15 |
0 |
0 |
| ODI |
2 |
2 |
0 |
82 |
766 |
217 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
339 |
834 |
292 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
131 |
1129 |
4850 |
8690 |
|
...date precedes bulletin
|
Date: 2023-10-19:
| 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 |
3740 |
4543 |
438 |
1181 |
460 |
4 |
0 |
0 |
| OW |
23 |
500 |
225 |
1068 |
625 |
84 |
0 |
0 |
| VODI |
11 |
79 |
35 |
594 |
826 |
127 |
0 |
0 |
| ODI |
2 |
24 |
11 |
151 |
560 |
370 |
0 |
0 |
| CDI |
0 |
4 |
2 |
54 |
267 |
976 |
293 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
179 |
1366 |
6054 |
8218 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3734 |
4800 |
489 |
1275 |
564 |
6 |
0 |
0 |
| OW |
24 |
242 |
161 |
910 |
490 |
38 |
0 |
0 |
| VODI |
16 |
80 |
50 |
671 |
846 |
170 |
0 |
0 |
| ODI |
2 |
21 |
9 |
125 |
564 |
407 |
0 |
0 |
| CDI |
0 |
7 |
2 |
60 |
262 |
982 |
389 |
0 |
| VCDI |
0 |
0 |
0 |
9 |
191 |
1324 |
5958 |
8218 |
|
Date: 2023-10-21:
| 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 |
3491 |
3973 |
271 |
514 |
262 |
64 |
0 |
0 |
| OW |
0 |
427 |
199 |
1066 |
488 |
403 |
0 |
0 |
| VODI |
0 |
138 |
84 |
864 |
903 |
513 |
0 |
0 |
| ODI |
0 |
10 |
12 |
214 |
672 |
472 |
0 |
0 |
| CDI |
0 |
3 |
1 |
105 |
519 |
1005 |
47 |
0 |
| VCDI |
0 |
0 |
0 |
33 |
370 |
2122 |
6560 |
7291 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3491 |
4151 |
317 |
658 |
287 |
87 |
0 |
0 |
| OW |
0 |
317 |
177 |
966 |
449 |
381 |
0 |
0 |
| VODI |
0 |
68 |
56 |
768 |
967 |
424 |
0 |
0 |
| ODI |
0 |
9 |
15 |
256 |
653 |
593 |
0 |
0 |
| CDI |
0 |
6 |
2 |
103 |
445 |
924 |
65 |
0 |
| VCDI |
0 |
0 |
0 |
45 |
413 |
2170 |
6542 |
7291 |
|
Date: 2023-10-23:
| 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 |
3173 |
3390 |
174 |
434 |
126 |
0 |
0 |
0 |
| OW |
0 |
425 |
255 |
569 |
229 |
0 |
0 |
0 |
| VODI |
0 |
15 |
40 |
965 |
770 |
36 |
0 |
0 |
| ODI |
0 |
5 |
0 |
137 |
2194 |
1001 |
0 |
0 |
| CDI |
0 |
1 |
3 |
23 |
791 |
2105 |
3 |
0 |
| VCDI |
0 |
0 |
0 |
7 |
236 |
2519 |
5991 |
7479 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3173 |
3432 |
213 |
813 |
491 |
30 |
0 |
0 |
| OW |
0 |
285 |
131 |
511 |
585 |
382 |
0 |
0 |
| VODI |
0 |
101 |
111 |
443 |
1310 |
841 |
0 |
0 |
| ODI |
0 |
14 |
14 |
229 |
914 |
707 |
0 |
0 |
| CDI |
0 |
4 |
2 |
100 |
571 |
862 |
7 |
0 |
| VCDI |
0 |
0 |
1 |
39 |
475 |
2839 |
5987 |
7479 |
|
Date: 2023-10-25:
| 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 |
2409 |
2875 |
250 |
459 |
289 |
29 |
0 |
0 |
| OW |
0 |
168 |
123 |
380 |
438 |
163 |
0 |
0 |
| VODI |
0 |
1 |
13 |
345 |
798 |
355 |
3 |
0 |
| ODI |
0 |
0 |
0 |
86 |
820 |
1057 |
21 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1033 |
2988 |
268 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
134 |
2715 |
7778 |
7098 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2409 |
2864 |
223 |
470 |
504 |
267 |
13 |
0 |
| OW |
0 |
161 |
98 |
285 |
528 |
684 |
56 |
0 |
| VODI |
0 |
19 |
61 |
301 |
988 |
1231 |
70 |
0 |
| ODI |
0 |
0 |
4 |
180 |
736 |
1491 |
148 |
0 |
| CDI |
0 |
0 |
0 |
33 |
524 |
1460 |
293 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
232 |
2174 |
7490 |
7098 |
|
Date: 2023-10-27:
| 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 |
2015 |
1515 |
153 |
630 |
230 |
75 |
0 |
0 |
| OW |
0 |
69 |
141 |
826 |
326 |
243 |
0 |
0 |
| VODI |
0 |
0 |
0 |
176 |
575 |
714 |
24 |
0 |
| ODI |
0 |
0 |
0 |
16 |
404 |
1013 |
108 |
0 |
| CDI |
0 |
0 |
0 |
0 |
427 |
2350 |
505 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
55 |
3141 |
6931 |
10433 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2015 |
1519 |
233 |
879 |
400 |
346 |
0 |
0 |
| OW |
0 |
64 |
54 |
464 |
195 |
666 |
3 |
0 |
| VODI |
0 |
1 |
7 |
242 |
457 |
1497 |
272 |
0 |
| ODI |
0 |
0 |
0 |
50 |
404 |
1599 |
482 |
0 |
| CDI |
0 |
0 |
0 |
13 |
387 |
1766 |
1097 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
174 |
1662 |
5714 |
10434 |
|
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