Validation of sea ice concentration - Asian sector
Bulletin date: 2023-12-14
Data source: OSI SAF N.H. AMSR 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 |
0 |
293 |
7 |
23 |
23 |
0 |
0 |
0 |
| OW |
0 |
82 |
27 |
107 |
104 |
6 |
0 |
0 |
| VODI |
0 |
29 |
28 |
111 |
144 |
99 |
0 |
0 |
| ODI |
0 |
1 |
5 |
44 |
162 |
238 |
17 |
0 |
| CDI |
0 |
0 |
0 |
2 |
78 |
322 |
205 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
17 |
473 |
8479 |
20956 |
|
...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 |
2 |
318 |
7 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
99 |
52 |
154 |
23 |
0 |
0 |
0 |
| VODI |
0 |
77 |
43 |
115 |
154 |
20 |
0 |
0 |
| ODI |
0 |
45 |
31 |
79 |
185 |
104 |
7 |
0 |
| CDI |
0 |
7 |
18 |
78 |
202 |
337 |
19 |
0 |
| VCDI |
0 |
0 |
2 |
46 |
97 |
633 |
7893 |
21229 |
|
...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 |
16 |
444 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
566 |
34 |
30 |
1 |
0 |
0 |
0 |
| VODI |
0 |
221 |
96 |
168 |
56 |
0 |
0 |
0 |
| ODI |
0 |
55 |
32 |
84 |
204 |
56 |
0 |
0 |
| CDI |
0 |
58 |
22 |
55 |
99 |
183 |
81 |
0 |
| VCDI |
0 |
50 |
37 |
130 |
157 |
1157 |
9230 |
18760 |
|
...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 |
3 |
467 |
2 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
409 |
38 |
27 |
7 |
1 |
0 |
0 |
| VODI |
0 |
246 |
65 |
185 |
146 |
55 |
0 |
0 |
| ODI |
0 |
68 |
17 |
90 |
116 |
145 |
0 |
0 |
| CDI |
0 |
45 |
25 |
93 |
91 |
227 |
178 |
0 |
| VCDI |
0 |
71 |
31 |
117 |
186 |
1036 |
8020 |
19875 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3 |
458 |
2 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
401 |
39 |
23 |
5 |
0 |
0 |
0 |
| VODI |
0 |
242 |
60 |
178 |
138 |
52 |
0 |
0 |
| ODI |
0 |
85 |
16 |
100 |
115 |
146 |
0 |
0 |
| CDI |
0 |
52 |
28 |
88 |
102 |
242 |
195 |
0 |
| VCDI |
0 |
68 |
33 |
123 |
186 |
1024 |
8003 |
19875 |
|
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 |
11 |
400 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
206 |
24 |
33 |
40 |
0 |
0 |
0 |
| VODI |
0 |
273 |
64 |
217 |
312 |
19 |
0 |
0 |
| ODI |
0 |
107 |
29 |
33 |
233 |
112 |
0 |
0 |
| CDI |
0 |
74 |
30 |
100 |
133 |
285 |
75 |
14 |
| VCDI |
0 |
115 |
26 |
77 |
351 |
1491 |
6607 |
20591 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11 |
405 |
1 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
190 |
24 |
32 |
22 |
0 |
0 |
0 |
| VODI |
0 |
230 |
48 |
189 |
286 |
15 |
0 |
0 |
| ODI |
0 |
156 |
37 |
54 |
280 |
115 |
0 |
0 |
| CDI |
0 |
86 |
38 |
104 |
130 |
299 |
102 |
12 |
| VCDI |
0 |
108 |
25 |
79 |
351 |
1478 |
6580 |
20593 |
|
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 |
1 |
430 |
7 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
297 |
46 |
20 |
0 |
0 |
0 |
0 |
| VODI |
0 |
175 |
100 |
263 |
85 |
11 |
0 |
0 |
| ODI |
0 |
14 |
24 |
101 |
285 |
181 |
0 |
0 |
| CDI |
0 |
30 |
13 |
58 |
184 |
409 |
102 |
0 |
| VCDI |
0 |
30 |
23 |
59 |
295 |
1589 |
7610 |
19633 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1 |
387 |
10 |
14 |
0 |
0 |
0 |
0 |
| OW |
0 |
150 |
20 |
21 |
13 |
8 |
0 |
0 |
| VODI |
0 |
177 |
40 |
111 |
198 |
124 |
2 |
0 |
| ODI |
0 |
139 |
71 |
168 |
141 |
223 |
51 |
0 |
| CDI |
0 |
54 |
40 |
118 |
160 |
194 |
189 |
0 |
| VCDI |
0 |
69 |
32 |
76 |
337 |
1641 |
7470 |
19633 |
|
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 |
5 |
443 |
8 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
136 |
29 |
73 |
4 |
0 |
0 |
0 |
| VODI |
0 |
140 |
77 |
198 |
176 |
16 |
0 |
0 |
| ODI |
0 |
25 |
25 |
185 |
263 |
234 |
33 |
0 |
| CDI |
0 |
15 |
8 |
52 |
218 |
375 |
75 |
0 |
| VCDI |
0 |
27 |
25 |
116 |
334 |
1482 |
7657 |
19623 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
5 |
342 |
5 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
102 |
6 |
37 |
16 |
4 |
0 |
0 |
| VODI |
0 |
168 |
46 |
76 |
55 |
65 |
41 |
0 |
| ODI |
0 |
82 |
57 |
167 |
285 |
264 |
42 |
0 |
| CDI |
0 |
29 |
21 |
194 |
234 |
259 |
111 |
0 |
| VCDI |
0 |
63 |
37 |
150 |
405 |
1515 |
7571 |
19623 |
|
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 |
21 |
327 |
7 |
2 |
0 |
0 |
0 |
0 |
| OW |
2 |
115 |
17 |
31 |
15 |
0 |
0 |
0 |
| VODI |
0 |
83 |
50 |
163 |
171 |
12 |
0 |
0 |
| ODI |
0 |
23 |
24 |
229 |
337 |
207 |
50 |
0 |
| CDI |
0 |
12 |
4 |
64 |
169 |
600 |
195 |
0 |
| VCDI |
0 |
8 |
16 |
94 |
129 |
996 |
8324 |
19585 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23 |
259 |
4 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
83 |
12 |
16 |
4 |
0 |
0 |
0 |
| VODI |
0 |
101 |
24 |
94 |
59 |
1 |
1 |
0 |
| ODI |
0 |
53 |
39 |
173 |
310 |
211 |
140 |
0 |
| CDI |
0 |
24 |
13 |
171 |
242 |
339 |
109 |
0 |
| VCDI |
0 |
48 |
26 |
127 |
206 |
1264 |
8319 |
19585 |
|
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