Validation of sea ice concentration - Asian sector
Bulletin date: 2023-12-14
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-12-08:
| 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 |
138 |
289 |
9 |
61 |
5 |
0 |
0 |
0 |
| OW |
11 |
31 |
23 |
179 |
96 |
0 |
0 |
0 |
| VODI |
2 |
0 |
6 |
135 |
244 |
35 |
0 |
0 |
| ODI |
0 |
0 |
0 |
20 |
261 |
190 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
115 |
424 |
110 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
479 |
6778 |
23451 |
|
...date precedes bulletin
|
Date: 2023-12-10:
| 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 |
132 |
312 |
3 |
35 |
0 |
0 |
0 |
0 |
| OW |
15 |
49 |
11 |
222 |
49 |
0 |
0 |
0 |
| VODI |
5 |
15 |
18 |
151 |
213 |
24 |
0 |
0 |
| ODI |
0 |
1 |
15 |
106 |
239 |
110 |
0 |
0 |
| CDI |
0 |
0 |
0 |
51 |
263 |
371 |
15 |
1 |
| VCDI |
0 |
0 |
0 |
25 |
126 |
607 |
6121 |
23791 |
|
...date precedes bulletin
|
Date: 2023-12-12:
| 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 |
145 |
465 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
11 |
491 |
93 |
63 |
6 |
0 |
0 |
0 |
| VODI |
2 |
84 |
106 |
293 |
74 |
0 |
0 |
0 |
| ODI |
0 |
15 |
16 |
125 |
287 |
9 |
1 |
0 |
| CDI |
0 |
12 |
9 |
103 |
176 |
180 |
46 |
5 |
| VCDI |
0 |
7 |
12 |
123 |
269 |
1126 |
6160 |
22581 |
|
...date precedes bulletin
|
Date: 2023-12-14:
| 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 |
151 |
463 |
16 |
5 |
0 |
0 |
0 |
0 |
| OW |
1 |
333 |
45 |
115 |
11 |
0 |
0 |
0 |
| VODI |
0 |
181 |
64 |
281 |
130 |
64 |
0 |
0 |
| ODI |
0 |
40 |
16 |
96 |
160 |
137 |
0 |
0 |
| CDI |
0 |
30 |
11 |
108 |
142 |
293 |
92 |
2 |
| VCDI |
0 |
24 |
23 |
122 |
266 |
1054 |
6510 |
22110 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
150 |
458 |
15 |
2 |
0 |
0 |
0 |
0 |
| OW |
2 |
324 |
42 |
118 |
6 |
0 |
0 |
0 |
| VODI |
0 |
183 |
62 |
261 |
126 |
61 |
0 |
0 |
| ODI |
0 |
53 |
18 |
108 |
160 |
135 |
0 |
0 |
| CDI |
0 |
29 |
18 |
109 |
150 |
322 |
106 |
2 |
| VCDI |
0 |
24 |
20 |
129 |
267 |
1030 |
6496 |
22110 |
|
Date: 2023-12-16:
| 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 |
147 |
394 |
14 |
8 |
0 |
0 |
0 |
0 |
| OW |
7 |
168 |
27 |
68 |
56 |
0 |
0 |
0 |
| VODI |
4 |
178 |
74 |
311 |
340 |
1 |
0 |
0 |
| ODI |
0 |
51 |
25 |
85 |
310 |
66 |
0 |
0 |
| CDI |
0 |
19 |
24 |
134 |
178 |
327 |
41 |
7 |
| VCDI |
0 |
41 |
22 |
106 |
380 |
1732 |
5867 |
21884 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
147 |
399 |
12 |
14 |
0 |
0 |
0 |
0 |
| OW |
7 |
153 |
26 |
66 |
35 |
0 |
0 |
0 |
| VODI |
4 |
164 |
59 |
254 |
311 |
0 |
0 |
0 |
| ODI |
0 |
80 |
38 |
119 |
362 |
68 |
0 |
0 |
| CDI |
0 |
21 |
29 |
151 |
177 |
350 |
58 |
6 |
| VCDI |
0 |
34 |
22 |
108 |
379 |
1708 |
5850 |
21885 |
|
Date: 2023-12-18:
| 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 |
126 |
438 |
12 |
8 |
0 |
0 |
0 |
0 |
| OW |
13 |
178 |
123 |
66 |
3 |
0 |
0 |
0 |
| VODI |
11 |
20 |
67 |
468 |
96 |
1 |
0 |
0 |
| ODI |
0 |
5 |
4 |
80 |
446 |
93 |
0 |
0 |
| CDI |
0 |
10 |
9 |
57 |
234 |
524 |
16 |
0 |
| VCDI |
0 |
0 |
10 |
71 |
273 |
1942 |
6625 |
21067 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
122 |
392 |
21 |
12 |
0 |
0 |
0 |
0 |
| OW |
15 |
100 |
40 |
48 |
27 |
0 |
0 |
0 |
| VODI |
12 |
106 |
53 |
171 |
251 |
95 |
0 |
0 |
| ODI |
1 |
28 |
65 |
280 |
207 |
221 |
13 |
0 |
| CDI |
0 |
12 |
23 |
137 |
237 |
260 |
133 |
0 |
| VCDI |
0 |
13 |
23 |
102 |
330 |
1984 |
6495 |
21067 |
|
Date: 2023-12-20:
| 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 |
87 |
470 |
17 |
15 |
0 |
0 |
0 |
0 |
| OW |
6 |
91 |
39 |
109 |
14 |
0 |
0 |
0 |
| VODI |
4 |
54 |
32 |
311 |
230 |
9 |
0 |
0 |
| ODI |
0 |
9 |
7 |
217 |
347 |
206 |
7 |
0 |
| CDI |
0 |
3 |
6 |
59 |
281 |
397 |
38 |
0 |
| VCDI |
0 |
0 |
4 |
102 |
358 |
1914 |
6728 |
20925 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
85 |
375 |
10 |
9 |
0 |
0 |
0 |
0 |
| OW |
7 |
94 |
11 |
47 |
22 |
0 |
0 |
0 |
| VODI |
5 |
108 |
36 |
148 |
88 |
75 |
19 |
0 |
| ODI |
0 |
32 |
21 |
217 |
403 |
226 |
28 |
0 |
| CDI |
0 |
9 |
6 |
244 |
262 |
300 |
79 |
0 |
| VCDI |
0 |
9 |
21 |
148 |
455 |
1925 |
6647 |
20925 |
|
Date: 2023-12-22:
| 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 |
49 |
411 |
11 |
10 |
0 |
0 |
0 |
0 |
| OW |
2 |
81 |
38 |
55 |
21 |
0 |
0 |
0 |
| VODI |
0 |
31 |
31 |
206 |
234 |
6 |
0 |
0 |
| ODI |
0 |
17 |
17 |
223 |
424 |
181 |
33 |
0 |
| CDI |
0 |
1 |
1 |
95 |
196 |
670 |
137 |
3 |
| VCDI |
0 |
0 |
0 |
72 |
144 |
1248 |
6493 |
21955 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
50 |
343 |
7 |
6 |
0 |
0 |
0 |
0 |
| OW |
1 |
86 |
15 |
27 |
4 |
0 |
0 |
0 |
| VODI |
0 |
67 |
35 |
121 |
77 |
0 |
2 |
0 |
| ODI |
0 |
30 |
23 |
208 |
383 |
203 |
108 |
0 |
| CDI |
0 |
11 |
5 |
170 |
322 |
358 |
81 |
1 |
| VCDI |
0 |
4 |
13 |
129 |
233 |
1544 |
6472 |
21957 |
|
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