Validation of sea ice concentration - Asian sector
Bulletin date: 2023-08-31
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-08-25:
| 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 |
8160 |
8202 |
346 |
281 |
27 |
0 |
0 |
0 |
| OW |
0 |
382 |
336 |
556 |
48 |
0 |
0 |
0 |
| VODI |
0 |
61 |
124 |
1159 |
680 |
26 |
0 |
0 |
| ODI |
0 |
18 |
15 |
546 |
2506 |
327 |
1 |
0 |
| CDI |
0 |
2 |
5 |
55 |
1213 |
5884 |
555 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
463 |
104 |
0 |
|
...date precedes bulletin
|
Date: 2023-08-27:
| 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 |
8222 |
8415 |
324 |
239 |
11 |
0 |
0 |
0 |
| OW |
0 |
419 |
274 |
539 |
44 |
0 |
0 |
0 |
| VODI |
0 |
96 |
122 |
1137 |
734 |
25 |
0 |
0 |
| ODI |
0 |
18 |
25 |
616 |
2370 |
239 |
0 |
0 |
| CDI |
0 |
4 |
11 |
66 |
2552 |
4869 |
404 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
302 |
4 |
0 |
|
...date precedes bulletin
|
Date: 2023-08-29:
| 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 |
8277 |
8823 |
406 |
258 |
4 |
0 |
0 |
0 |
| OW |
0 |
172 |
181 |
357 |
24 |
0 |
0 |
0 |
| VODI |
0 |
26 |
109 |
1440 |
381 |
3 |
0 |
0 |
| ODI |
0 |
0 |
8 |
676 |
4043 |
290 |
0 |
0 |
| CDI |
0 |
0 |
3 |
61 |
2315 |
4096 |
25 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
104 |
0 |
0 |
|
...date precedes bulletin
|
Date: 2023-08-31:
| 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 |
7250 |
9505 |
688 |
258 |
2 |
0 |
0 |
0 |
| OW |
0 |
217 |
188 |
294 |
28 |
0 |
0 |
0 |
| VODI |
0 |
47 |
160 |
1351 |
372 |
8 |
0 |
0 |
| ODI |
0 |
2 |
14 |
912 |
3943 |
108 |
0 |
0 |
| CDI |
0 |
0 |
0 |
54 |
3387 |
3292 |
2 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7250 |
9488 |
709 |
269 |
6 |
0 |
0 |
0 |
| OW |
0 |
224 |
163 |
281 |
24 |
0 |
0 |
0 |
| VODI |
0 |
56 |
163 |
1217 |
348 |
7 |
0 |
0 |
| ODI |
0 |
3 |
15 |
1055 |
3809 |
101 |
0 |
0 |
| CDI |
0 |
0 |
0 |
47 |
3544 |
3300 |
2 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
|
Date: 2023-09-02:
| 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 |
8367 |
8960 |
200 |
98 |
1 |
0 |
0 |
0 |
| OW |
0 |
351 |
184 |
232 |
40 |
1 |
0 |
0 |
| VODI |
0 |
113 |
197 |
1260 |
370 |
5 |
0 |
0 |
| ODI |
0 |
2 |
14 |
1041 |
3542 |
273 |
0 |
0 |
| CDI |
0 |
0 |
2 |
56 |
2988 |
3621 |
156 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
8 |
0 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8367 |
8877 |
189 |
117 |
8 |
0 |
0 |
0 |
| OW |
0 |
403 |
193 |
173 |
32 |
1 |
0 |
0 |
| VODI |
0 |
138 |
198 |
1209 |
366 |
3 |
0 |
0 |
| ODI |
0 |
8 |
15 |
1126 |
3396 |
268 |
0 |
0 |
| CDI |
0 |
0 |
2 |
62 |
3139 |
3626 |
156 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
10 |
0 |
0 |
|
Date: 2023-09-04:
| 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 |
8759 |
8758 |
218 |
86 |
3 |
0 |
0 |
0 |
| OW |
0 |
272 |
186 |
190 |
32 |
0 |
0 |
0 |
| VODI |
0 |
42 |
170 |
1440 |
463 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
782 |
4866 |
400 |
0 |
0 |
| CDI |
0 |
0 |
0 |
9 |
1635 |
3704 |
31 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
32 |
0 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8759 |
8397 |
160 |
86 |
29 |
0 |
0 |
0 |
| OW |
0 |
511 |
158 |
144 |
41 |
3 |
0 |
0 |
| VODI |
0 |
159 |
230 |
1081 |
456 |
21 |
0 |
0 |
| ODI |
0 |
5 |
26 |
1133 |
3300 |
363 |
0 |
0 |
| CDI |
0 |
0 |
0 |
63 |
3173 |
3736 |
31 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
17 |
0 |
0 |
|
Date: 2023-09-06:
| 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 |
9283 |
8360 |
166 |
65 |
8 |
0 |
0 |
0 |
| OW |
0 |
296 |
192 |
226 |
30 |
0 |
0 |
0 |
| VODI |
0 |
73 |
190 |
1240 |
525 |
0 |
0 |
0 |
| ODI |
0 |
1 |
3 |
629 |
4132 |
1092 |
0 |
0 |
| CDI |
0 |
0 |
0 |
45 |
1347 |
3992 |
169 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
10 |
8 |
0 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9283 |
7922 |
110 |
63 |
22 |
0 |
0 |
0 |
| OW |
0 |
557 |
133 |
146 |
47 |
0 |
0 |
0 |
| VODI |
0 |
233 |
251 |
915 |
406 |
1 |
0 |
0 |
| ODI |
0 |
17 |
55 |
929 |
3371 |
480 |
0 |
0 |
| CDI |
0 |
1 |
2 |
152 |
2197 |
4604 |
169 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
7 |
0 |
0 |
|
Date: 2023-09-08:
| 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 |
9533 |
8052 |
148 |
120 |
7 |
0 |
0 |
0 |
| OW |
0 |
395 |
154 |
278 |
31 |
0 |
0 |
0 |
| VODI |
0 |
148 |
183 |
1337 |
452 |
1 |
0 |
0 |
| ODI |
0 |
20 |
27 |
716 |
3809 |
1112 |
0 |
0 |
| CDI |
0 |
0 |
2 |
82 |
1785 |
3663 |
24 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
0 |
0 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9533 |
7489 |
94 |
121 |
12 |
0 |
0 |
0 |
| OW |
0 |
669 |
87 |
141 |
29 |
0 |
0 |
0 |
| VODI |
0 |
375 |
231 |
926 |
266 |
2 |
0 |
0 |
| ODI |
0 |
61 |
81 |
1127 |
3096 |
606 |
0 |
0 |
| CDI |
0 |
21 |
21 |
218 |
2680 |
4168 |
24 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
0 |
0 |
0 |
|
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