Validation of sea ice concentration - Asian sector
Bulletin date: 2023-07-27
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-07-21:
| 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 |
1341 |
7055 |
443 |
255 |
39 |
4 |
0 |
0 |
| OW |
0 |
434 |
380 |
1012 |
174 |
2 |
0 |
0 |
| VODI |
0 |
94 |
95 |
1526 |
1787 |
74 |
0 |
0 |
| ODI |
0 |
21 |
30 |
402 |
5349 |
1051 |
1 |
0 |
| CDI |
0 |
8 |
10 |
54 |
2730 |
7052 |
62 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
517 |
79 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-23:
| 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 |
2573 |
6254 |
467 |
371 |
41 |
4 |
0 |
0 |
| OW |
0 |
471 |
319 |
1046 |
346 |
4 |
0 |
0 |
| VODI |
0 |
110 |
124 |
1293 |
2452 |
258 |
6 |
0 |
| ODI |
0 |
23 |
21 |
233 |
4398 |
1246 |
41 |
0 |
| CDI |
0 |
8 |
12 |
46 |
1702 |
7428 |
240 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
421 |
121 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-25:
| 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 |
2761 |
6667 |
438 |
306 |
33 |
2 |
0 |
0 |
| OW |
0 |
290 |
275 |
621 |
82 |
7 |
0 |
0 |
| VODI |
0 |
91 |
161 |
1373 |
939 |
54 |
7 |
0 |
| ODI |
0 |
10 |
14 |
580 |
5989 |
1884 |
39 |
0 |
| CDI |
0 |
2 |
2 |
36 |
702 |
7915 |
660 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
70 |
71 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-27:
| 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 |
2771 |
6912 |
342 |
271 |
14 |
4 |
0 |
0 |
| OW |
0 |
311 |
313 |
774 |
78 |
11 |
0 |
0 |
| VODI |
0 |
110 |
188 |
1655 |
1262 |
85 |
9 |
0 |
| ODI |
0 |
10 |
20 |
440 |
5911 |
1965 |
49 |
0 |
| CDI |
0 |
2 |
2 |
21 |
408 |
6371 |
1722 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
32 |
19 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2771 |
6904 |
386 |
376 |
26 |
4 |
0 |
0 |
| OW |
0 |
310 |
274 |
734 |
136 |
19 |
0 |
0 |
| VODI |
0 |
116 |
183 |
1552 |
1230 |
101 |
13 |
0 |
| ODI |
0 |
12 |
19 |
476 |
5821 |
1819 |
39 |
0 |
| CDI |
0 |
3 |
3 |
23 |
460 |
6486 |
1729 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
39 |
18 |
0 |
|
Date: 2023-07-29:
| 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 |
2360 |
7497 |
290 |
235 |
11 |
0 |
0 |
0 |
| OW |
1 |
534 |
392 |
684 |
102 |
3 |
0 |
0 |
| VODI |
0 |
148 |
221 |
1831 |
1736 |
87 |
0 |
0 |
| ODI |
0 |
9 |
18 |
324 |
5101 |
2578 |
51 |
0 |
| CDI |
0 |
0 |
3 |
16 |
417 |
6072 |
1346 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
15 |
0 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2360 |
7558 |
366 |
340 |
34 |
0 |
0 |
0 |
| OW |
1 |
477 |
322 |
665 |
138 |
7 |
0 |
0 |
| VODI |
0 |
144 |
215 |
1752 |
1669 |
101 |
0 |
0 |
| ODI |
0 |
9 |
18 |
316 |
5096 |
2383 |
47 |
0 |
| CDI |
0 |
0 |
3 |
17 |
430 |
6251 |
1350 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
13 |
0 |
0 |
|
Date: 2023-07-31:
| 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 |
2133 |
8183 |
334 |
183 |
15 |
0 |
0 |
0 |
| OW |
0 |
472 |
307 |
402 |
63 |
0 |
0 |
0 |
| VODI |
0 |
149 |
328 |
1742 |
616 |
9 |
0 |
0 |
| ODI |
0 |
8 |
13 |
723 |
5212 |
640 |
0 |
0 |
| CDI |
0 |
0 |
0 |
9 |
1102 |
7415 |
219 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
414 |
1391 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2132 |
7990 |
349 |
351 |
48 |
0 |
0 |
0 |
| OW |
1 |
642 |
351 |
679 |
224 |
3 |
0 |
0 |
| VODI |
0 |
165 |
258 |
1703 |
1964 |
125 |
0 |
0 |
| ODI |
0 |
14 |
21 |
310 |
4483 |
3136 |
2 |
0 |
| CDI |
0 |
1 |
3 |
16 |
289 |
5214 |
1600 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
8 |
0 |
|
Date: 2023-08-02:
| 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 |
3456 |
7225 |
299 |
197 |
19 |
0 |
0 |
0 |
| OW |
0 |
475 |
413 |
616 |
98 |
1 |
0 |
0 |
| VODI |
0 |
103 |
191 |
1644 |
1021 |
87 |
0 |
0 |
| ODI |
0 |
11 |
15 |
516 |
4581 |
1133 |
6 |
0 |
| CDI |
0 |
0 |
0 |
23 |
991 |
6890 |
421 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
365 |
1285 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3455 |
6931 |
356 |
377 |
52 |
1 |
0 |
0 |
| OW |
1 |
676 |
348 |
827 |
334 |
7 |
0 |
0 |
| VODI |
0 |
188 |
186 |
1475 |
2316 |
261 |
0 |
0 |
| ODI |
0 |
19 |
26 |
299 |
3685 |
3694 |
117 |
0 |
| CDI |
0 |
0 |
2 |
18 |
323 |
4513 |
1589 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
6 |
0 |
|
Date: 2023-08-04:
| 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 |
3568 |
7504 |
247 |
114 |
3 |
0 |
0 |
0 |
| OW |
0 |
718 |
460 |
619 |
72 |
0 |
0 |
0 |
| VODI |
0 |
138 |
223 |
1766 |
1013 |
12 |
0 |
0 |
| ODI |
0 |
9 |
23 |
578 |
4301 |
1126 |
0 |
0 |
| CDI |
0 |
0 |
2 |
23 |
1233 |
6738 |
85 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1173 |
334 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3567 |
7263 |
375 |
360 |
30 |
0 |
0 |
0 |
| OW |
1 |
813 |
338 |
924 |
313 |
4 |
0 |
0 |
| VODI |
0 |
245 |
213 |
1501 |
2439 |
161 |
0 |
0 |
| ODI |
0 |
48 |
25 |
295 |
3211 |
4174 |
44 |
0 |
| CDI |
0 |
0 |
4 |
20 |
629 |
4710 |
374 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
|
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