Validation of sea ice concentration - Asian sector
Bulletin date: 2023-09-21
Data source: OSI SAF N.H. multi-product 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 |
13952 |
4457 |
8 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
1270 |
227 |
185 |
2 |
0 |
0 |
0 |
| VODI |
0 |
94 |
199 |
2054 |
363 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
245 |
5606 |
949 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
587 |
2893 |
0 |
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 |
14025 |
4165 |
7 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
1388 |
198 |
180 |
4 |
0 |
0 |
0 |
| VODI |
0 |
150 |
265 |
1850 |
400 |
15 |
0 |
0 |
| ODI |
0 |
0 |
0 |
381 |
3937 |
1508 |
27 |
0 |
| CDI |
0 |
0 |
0 |
0 |
697 |
3620 |
277 |
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 |
14148 |
4341 |
2 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
1047 |
353 |
159 |
0 |
0 |
0 |
0 |
| VODI |
0 |
10 |
97 |
1667 |
286 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
177 |
2813 |
667 |
0 |
0 |
| CDI |
0 |
0 |
0 |
2 |
1109 |
5603 |
133 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
435 |
46 |
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 |
13616 |
4827 |
24 |
3 |
0 |
0 |
0 |
0 |
| OW |
0 |
1013 |
302 |
281 |
0 |
0 |
0 |
0 |
| VODI |
0 |
24 |
107 |
1193 |
518 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
169 |
2248 |
591 |
0 |
0 |
| CDI |
0 |
0 |
0 |
8 |
884 |
5795 |
887 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
433 |
171 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13616 |
4941 |
28 |
13 |
0 |
0 |
0 |
0 |
| OW |
0 |
894 |
309 |
266 |
0 |
0 |
0 |
0 |
| VODI |
0 |
29 |
96 |
1174 |
626 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
185 |
2151 |
831 |
0 |
0 |
| CDI |
0 |
0 |
0 |
16 |
870 |
5050 |
696 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
940 |
362 |
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 |
14210 |
4334 |
34 |
11 |
0 |
0 |
0 |
0 |
| OW |
0 |
857 |
210 |
371 |
46 |
31 |
0 |
0 |
| VODI |
0 |
95 |
130 |
723 |
529 |
200 |
75 |
0 |
| ODI |
0 |
0 |
1 |
245 |
1785 |
470 |
166 |
0 |
| CDI |
0 |
0 |
0 |
19 |
290 |
4472 |
1948 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
313 |
1531 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14210 |
4438 |
53 |
24 |
0 |
0 |
0 |
0 |
| OW |
0 |
759 |
178 |
371 |
48 |
12 |
0 |
0 |
| VODI |
0 |
87 |
142 |
694 |
609 |
211 |
75 |
0 |
| ODI |
0 |
2 |
2 |
248 |
1625 |
584 |
262 |
0 |
| CDI |
0 |
0 |
0 |
32 |
368 |
4073 |
1453 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
606 |
1930 |
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 |
14224 |
4709 |
40 |
3 |
0 |
0 |
0 |
0 |
| OW |
0 |
693 |
332 |
217 |
0 |
0 |
0 |
0 |
| VODI |
0 |
2 |
30 |
1017 |
211 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
57 |
2148 |
88 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
219 |
2865 |
314 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
674 |
4623 |
630 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14224 |
4430 |
51 |
26 |
0 |
0 |
0 |
0 |
| OW |
0 |
763 |
179 |
325 |
50 |
0 |
0 |
0 |
| VODI |
0 |
209 |
166 |
666 |
591 |
241 |
2 |
0 |
| ODI |
0 |
2 |
6 |
272 |
1607 |
686 |
71 |
0 |
| CDI |
0 |
0 |
0 |
5 |
330 |
2217 |
2217 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
483 |
2647 |
630 |
|
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 |
14091 |
4837 |
26 |
4 |
0 |
0 |
0 |
0 |
| OW |
0 |
831 |
281 |
168 |
3 |
0 |
0 |
0 |
| VODI |
0 |
42 |
101 |
909 |
267 |
1 |
0 |
0 |
| ODI |
0 |
1 |
12 |
201 |
1956 |
208 |
2 |
0 |
| CDI |
0 |
0 |
0 |
64 |
408 |
2355 |
883 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
195 |
856 |
4190 |
203 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14091 |
4538 |
43 |
36 |
2 |
0 |
0 |
0 |
| OW |
0 |
867 |
175 |
314 |
75 |
0 |
0 |
0 |
| VODI |
0 |
301 |
186 |
672 |
804 |
13 |
0 |
0 |
| ODI |
0 |
5 |
16 |
322 |
1707 |
914 |
12 |
0 |
| CDI |
0 |
0 |
0 |
3 |
241 |
2312 |
3090 |
15 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
181 |
1973 |
188 |
|
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 |
13888 |
4545 |
51 |
35 |
10 |
0 |
0 |
0 |
| OW |
0 |
795 |
214 |
371 |
23 |
2 |
0 |
0 |
| VODI |
0 |
76 |
63 |
658 |
431 |
31 |
0 |
0 |
| ODI |
0 |
11 |
22 |
98 |
1156 |
802 |
3 |
0 |
| CDI |
0 |
0 |
7 |
92 |
311 |
1983 |
964 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
137 |
435 |
4054 |
1828 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13888 |
4444 |
108 |
102 |
31 |
0 |
0 |
0 |
| OW |
0 |
750 |
101 |
390 |
223 |
22 |
0 |
0 |
| VODI |
0 |
232 |
144 |
592 |
537 |
483 |
2 |
0 |
| ODI |
0 |
1 |
4 |
170 |
928 |
979 |
267 |
0 |
| CDI |
0 |
0 |
0 |
0 |
349 |
1769 |
3632 |
676 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
1120 |
1152 |
|
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