Validation of sea ice concentration - Asian sector
Bulletin date: 2023-10-26
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-10-20:
| 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 |
2887 |
3613 |
121 |
184 |
253 |
3 |
0 |
0 |
| OW |
5 |
1207 |
369 |
872 |
895 |
266 |
0 |
0 |
| VODI |
0 |
727 |
189 |
653 |
1120 |
599 |
0 |
0 |
| ODI |
0 |
18 |
10 |
131 |
442 |
576 |
4 |
0 |
| CDI |
0 |
4 |
9 |
29 |
254 |
556 |
23 |
0 |
| VCDI |
0 |
0 |
3 |
24 |
199 |
2411 |
9031 |
4395 |
|
...date precedes bulletin
|
Date: 2023-10-22:
| 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 |
2777 |
3109 |
56 |
107 |
97 |
0 |
0 |
0 |
| OW |
47 |
1126 |
272 |
714 |
860 |
82 |
0 |
0 |
| VODI |
0 |
692 |
208 |
785 |
1561 |
539 |
0 |
0 |
| ODI |
0 |
44 |
53 |
296 |
818 |
564 |
0 |
0 |
| CDI |
0 |
2 |
7 |
55 |
366 |
745 |
30 |
0 |
| VCDI |
0 |
0 |
3 |
41 |
293 |
2656 |
12613 |
464 |
|
...date precedes bulletin
|
Date: 2023-10-24:
| 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 |
2605 |
3323 |
120 |
168 |
67 |
9 |
0 |
0 |
| OW |
3 |
482 |
126 |
331 |
219 |
27 |
0 |
0 |
| VODI |
0 |
96 |
94 |
472 |
908 |
197 |
3 |
0 |
| ODI |
0 |
3 |
5 |
133 |
1591 |
1238 |
42 |
0 |
| CDI |
0 |
0 |
0 |
21 |
733 |
2398 |
202 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
56 |
3733 |
9998 |
2679 |
|
...date precedes bulletin
|
Date: 2023-10-26:
| 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 |
1414 |
2716 |
212 |
324 |
55 |
3 |
0 |
0 |
| OW |
0 |
348 |
164 |
576 |
411 |
97 |
0 |
0 |
| VODI |
0 |
11 |
24 |
237 |
774 |
452 |
81 |
0 |
| ODI |
0 |
0 |
0 |
41 |
883 |
1160 |
263 |
0 |
| CDI |
0 |
0 |
0 |
16 |
452 |
3115 |
508 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
304 |
2429 |
9369 |
5643 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1414 |
2648 |
209 |
311 |
50 |
9 |
0 |
0 |
| OW |
0 |
410 |
160 |
555 |
373 |
146 |
0 |
0 |
| VODI |
0 |
17 |
31 |
267 |
763 |
340 |
51 |
0 |
| ODI |
0 |
0 |
0 |
41 |
843 |
1084 |
282 |
0 |
| CDI |
0 |
0 |
0 |
15 |
499 |
2917 |
351 |
0 |
| VCDI |
0 |
0 |
0 |
5 |
351 |
2760 |
9537 |
5643 |
|
Date: 2023-10-28:
| 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 |
1113 |
2041 |
141 |
380 |
106 |
7 |
0 |
0 |
| OW |
0 |
143 |
85 |
428 |
635 |
84 |
2 |
0 |
| VODI |
0 |
0 |
3 |
160 |
711 |
818 |
108 |
0 |
| ODI |
0 |
0 |
0 |
2 |
218 |
1039 |
320 |
0 |
| CDI |
0 |
0 |
0 |
0 |
86 |
2513 |
1015 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
116 |
2184 |
8416 |
9208 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1113 |
1883 |
125 |
345 |
92 |
13 |
0 |
0 |
| OW |
0 |
300 |
98 |
441 |
534 |
114 |
7 |
0 |
| VODI |
0 |
1 |
6 |
184 |
826 |
735 |
84 |
0 |
| ODI |
0 |
0 |
0 |
0 |
208 |
990 |
276 |
0 |
| CDI |
0 |
0 |
0 |
0 |
124 |
2231 |
930 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
88 |
2562 |
8564 |
9208 |
|
Date: 2023-10-30:
| 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 |
781 |
2281 |
54 |
73 |
25 |
0 |
0 |
0 |
| OW |
0 |
55 |
47 |
133 |
106 |
5 |
0 |
0 |
| VODI |
0 |
20 |
38 |
285 |
407 |
49 |
0 |
0 |
| ODI |
0 |
0 |
0 |
40 |
695 |
396 |
1 |
0 |
| CDI |
0 |
0 |
0 |
0 |
318 |
3998 |
419 |
6 |
| VCDI |
0 |
0 |
0 |
0 |
11 |
1288 |
8308 |
12243 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
781 |
2106 |
63 |
236 |
210 |
5 |
0 |
0 |
| OW |
0 |
230 |
56 |
242 |
512 |
71 |
4 |
0 |
| VODI |
0 |
20 |
20 |
53 |
508 |
1100 |
50 |
0 |
| ODI |
0 |
0 |
0 |
0 |
156 |
1008 |
229 |
0 |
| CDI |
0 |
0 |
0 |
0 |
89 |
1345 |
972 |
43 |
| VCDI |
0 |
0 |
0 |
0 |
87 |
2207 |
7473 |
12206 |
|
Date: 2023-11-01:
| 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 |
1302 |
1847 |
32 |
40 |
2 |
0 |
0 |
0 |
| OW |
4 |
119 |
41 |
70 |
57 |
2 |
0 |
0 |
| VODI |
0 |
35 |
26 |
98 |
262 |
148 |
0 |
0 |
| ODI |
0 |
1 |
3 |
32 |
385 |
477 |
56 |
0 |
| CDI |
0 |
0 |
0 |
1 |
391 |
1328 |
774 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
141 |
2947 |
10754 |
10704 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1292 |
1604 |
48 |
95 |
120 |
23 |
0 |
0 |
| OW |
13 |
297 |
15 |
61 |
239 |
136 |
1 |
0 |
| VODI |
1 |
101 |
39 |
63 |
408 |
843 |
222 |
0 |
| ODI |
0 |
0 |
0 |
22 |
221 |
815 |
448 |
0 |
| CDI |
0 |
0 |
0 |
0 |
125 |
583 |
842 |
124 |
| VCDI |
0 |
0 |
0 |
0 |
125 |
2502 |
10071 |
10583 |
|
Date: 2023-11-03:
| 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 |
1434 |
1758 |
3 |
1 |
0 |
0 |
0 |
0 |
| OW |
7 |
232 |
26 |
16 |
0 |
0 |
0 |
0 |
| VODI |
0 |
139 |
44 |
99 |
83 |
22 |
0 |
0 |
| ODI |
0 |
49 |
34 |
84 |
107 |
273 |
7 |
0 |
| CDI |
0 |
3 |
15 |
74 |
402 |
634 |
261 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
592 |
3458 |
10378 |
11843 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1401 |
1530 |
30 |
44 |
24 |
2 |
0 |
0 |
| OW |
23 |
278 |
27 |
52 |
46 |
37 |
0 |
0 |
| VODI |
17 |
279 |
25 |
55 |
211 |
431 |
34 |
0 |
| ODI |
0 |
87 |
29 |
73 |
430 |
707 |
335 |
7 |
| CDI |
0 |
7 |
11 |
39 |
148 |
672 |
756 |
23 |
| VCDI |
0 |
0 |
0 |
11 |
325 |
2538 |
9521 |
11817 |
|
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