Validation of sea ice concentration - Asian sector
Bulletin date: 2023-09-21
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-09-15:
| 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 |
12699 |
4782 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
1367 |
184 |
106 |
4 |
0 |
0 |
0 |
| VODI |
0 |
286 |
295 |
1585 |
507 |
12 |
0 |
0 |
| ODI |
0 |
8 |
12 |
529 |
5286 |
940 |
5 |
0 |
| CDI |
0 |
0 |
0 |
1 |
698 |
2767 |
8 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-17:
| 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 |
12604 |
4658 |
3 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
1446 |
172 |
120 |
12 |
0 |
0 |
0 |
| VODI |
0 |
337 |
349 |
1461 |
483 |
21 |
0 |
0 |
| ODI |
0 |
12 |
23 |
566 |
3809 |
1399 |
20 |
0 |
| CDI |
0 |
0 |
0 |
0 |
827 |
3709 |
51 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-19:
| 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 |
12831 |
4708 |
14 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
1128 |
270 |
144 |
4 |
0 |
0 |
0 |
| VODI |
0 |
115 |
206 |
1378 |
334 |
1 |
0 |
0 |
| ODI |
0 |
1 |
7 |
264 |
2734 |
633 |
1 |
0 |
| CDI |
0 |
0 |
0 |
7 |
1634 |
5152 |
34 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
460 |
19 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-21:
| 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 |
13007 |
4507 |
22 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
1203 |
194 |
171 |
13 |
0 |
0 |
0 |
| VODI |
0 |
187 |
181 |
913 |
495 |
44 |
0 |
0 |
| ODI |
0 |
4 |
24 |
234 |
2050 |
675 |
0 |
0 |
| CDI |
0 |
0 |
0 |
36 |
1292 |
6037 |
187 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
531 |
67 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13007 |
4612 |
27 |
14 |
0 |
0 |
0 |
0 |
| OW |
0 |
1098 |
186 |
162 |
14 |
0 |
0 |
0 |
| VODI |
0 |
181 |
183 |
898 |
592 |
50 |
0 |
0 |
| ODI |
0 |
10 |
25 |
234 |
2005 |
875 |
0 |
0 |
| CDI |
0 |
0 |
0 |
48 |
1212 |
5165 |
179 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
33 |
1197 |
75 |
0 |
|
Date: 2023-09-23:
| 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 |
13114 |
4522 |
20 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
981 |
190 |
253 |
45 |
29 |
3 |
0 |
| VODI |
0 |
212 |
144 |
641 |
440 |
266 |
25 |
0 |
| ODI |
0 |
29 |
26 |
264 |
1621 |
592 |
110 |
0 |
| CDI |
0 |
0 |
0 |
36 |
429 |
5386 |
860 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
827 |
1008 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13114 |
4634 |
31 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
873 |
169 |
250 |
54 |
12 |
1 |
0 |
| VODI |
0 |
212 |
150 |
628 |
497 |
283 |
23 |
0 |
| ODI |
0 |
25 |
30 |
263 |
1486 |
693 |
206 |
0 |
| CDI |
0 |
0 |
0 |
43 |
502 |
4688 |
669 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
1424 |
1107 |
0 |
|
Date: 2023-09-25:
| 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 |
13215 |
4820 |
6 |
2 |
0 |
0 |
0 |
0 |
| OW |
1 |
1049 |
132 |
51 |
0 |
0 |
0 |
0 |
| VODI |
0 |
188 |
191 |
719 |
141 |
0 |
0 |
0 |
| ODI |
0 |
2 |
4 |
344 |
1780 |
141 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
528 |
2828 |
11 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
3584 |
2337 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13215 |
4560 |
10 |
9 |
1 |
0 |
0 |
0 |
| OW |
1 |
988 |
136 |
147 |
40 |
0 |
0 |
0 |
| VODI |
0 |
437 |
139 |
600 |
450 |
220 |
0 |
0 |
| ODI |
0 |
72 |
43 |
335 |
1486 |
685 |
0 |
0 |
| CDI |
0 |
2 |
5 |
28 |
477 |
3554 |
682 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
2094 |
1666 |
0 |
|
Date: 2023-09-27:
| 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 |
13309 |
4687 |
20 |
5 |
0 |
0 |
0 |
0 |
| OW |
1 |
1058 |
140 |
80 |
0 |
0 |
0 |
0 |
| VODI |
0 |
201 |
171 |
706 |
223 |
0 |
0 |
0 |
| ODI |
0 |
22 |
15 |
323 |
1761 |
242 |
0 |
0 |
| CDI |
0 |
6 |
7 |
84 |
660 |
2882 |
37 |
0 |
| VCDI |
0 |
0 |
0 |
19 |
228 |
3794 |
1401 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13310 |
4430 |
24 |
14 |
0 |
0 |
0 |
0 |
| OW |
0 |
1047 |
116 |
204 |
52 |
2 |
0 |
0 |
| VODI |
0 |
473 |
181 |
575 |
708 |
14 |
0 |
0 |
| ODI |
0 |
24 |
32 |
405 |
1721 |
778 |
0 |
0 |
| CDI |
0 |
0 |
0 |
19 |
391 |
4655 |
565 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1469 |
873 |
0 |
|
Date: 2023-09-29:
| 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 |
12628 |
4920 |
25 |
21 |
4 |
0 |
0 |
0 |
| OW |
0 |
896 |
230 |
244 |
22 |
5 |
0 |
0 |
| VODI |
0 |
152 |
110 |
618 |
340 |
26 |
0 |
0 |
| ODI |
0 |
29 |
25 |
196 |
1420 |
414 |
0 |
0 |
| CDI |
0 |
10 |
25 |
92 |
652 |
2355 |
186 |
0 |
| VCDI |
0 |
0 |
0 |
22 |
223 |
2801 |
3391 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12628 |
4835 |
89 |
71 |
19 |
0 |
0 |
0 |
| OW |
0 |
806 |
128 |
317 |
184 |
42 |
0 |
0 |
| VODI |
0 |
360 |
185 |
467 |
670 |
290 |
0 |
0 |
| ODI |
0 |
6 |
13 |
324 |
975 |
961 |
51 |
0 |
| CDI |
0 |
0 |
0 |
14 |
813 |
3443 |
2120 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
865 |
1406 |
0 |
|
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