Validation of sea ice concentration - Asian sector
Bulletin date: 2023-05-25
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-05-19:
| 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 |
440 |
12 |
14 |
2 |
2 |
0 |
0 |
| OW |
0 |
51 |
5 |
17 |
16 |
1 |
1 |
0 |
| VODI |
0 |
55 |
14 |
34 |
37 |
8 |
0 |
0 |
| ODI |
0 |
28 |
23 |
41 |
65 |
41 |
13 |
0 |
| CDI |
0 |
22 |
25 |
83 |
210 |
413 |
249 |
0 |
| VCDI |
0 |
12 |
28 |
123 |
479 |
3674 |
15088 |
10756 |
|
...date precedes bulletin
|
Date: 2023-05-21:
| 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 |
0 |
501 |
17 |
20 |
3 |
2 |
0 |
0 |
| OW |
0 |
71 |
10 |
24 |
21 |
1 |
1 |
0 |
| VODI |
0 |
80 |
24 |
35 |
36 |
3 |
0 |
0 |
| ODI |
0 |
36 |
13 |
64 |
66 |
13 |
3 |
0 |
| CDI |
0 |
26 |
24 |
84 |
298 |
424 |
206 |
0 |
| VCDI |
0 |
16 |
32 |
178 |
557 |
4336 |
14219 |
10638 |
|
...date precedes bulletin
|
Date: 2023-05-23:
| 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 |
2 |
662 |
19 |
30 |
8 |
2 |
2 |
0 |
| OW |
0 |
96 |
21 |
66 |
20 |
4 |
0 |
0 |
| VODI |
0 |
51 |
28 |
106 |
108 |
9 |
4 |
0 |
| ODI |
0 |
59 |
24 |
84 |
165 |
48 |
20 |
0 |
| CDI |
0 |
79 |
37 |
105 |
294 |
955 |
366 |
0 |
| VCDI |
0 |
23 |
27 |
129 |
327 |
2791 |
16402 |
8909 |
|
...date precedes bulletin
|
Date: 2023-05-25:
| 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 |
2 |
844 |
34 |
48 |
11 |
4 |
0 |
0 |
| OW |
0 |
94 |
29 |
72 |
27 |
2 |
0 |
0 |
| VODI |
0 |
53 |
28 |
101 |
56 |
8 |
2 |
0 |
| ODI |
0 |
71 |
23 |
83 |
179 |
57 |
10 |
0 |
| CDI |
0 |
156 |
45 |
186 |
406 |
1026 |
205 |
0 |
| VCDI |
0 |
31 |
27 |
126 |
492 |
4600 |
18230 |
4714 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2 |
859 |
39 |
59 |
19 |
4 |
0 |
0 |
| OW |
0 |
77 |
25 |
59 |
21 |
3 |
0 |
0 |
| VODI |
0 |
52 |
26 |
92 |
47 |
6 |
2 |
0 |
| ODI |
0 |
76 |
19 |
78 |
157 |
43 |
8 |
0 |
| CDI |
0 |
153 |
47 |
205 |
440 |
1051 |
205 |
0 |
| VCDI |
0 |
32 |
30 |
123 |
487 |
4590 |
18232 |
4714 |
|
Date: 2023-05-27:
| 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 |
2 |
966 |
41 |
88 |
24 |
2 |
1 |
0 |
| OW |
0 |
105 |
40 |
43 |
6 |
6 |
0 |
0 |
| VODI |
0 |
67 |
39 |
116 |
65 |
3 |
5 |
0 |
| ODI |
0 |
85 |
28 |
106 |
175 |
80 |
23 |
0 |
| CDI |
0 |
196 |
42 |
172 |
546 |
997 |
350 |
0 |
| VCDI |
0 |
69 |
75 |
192 |
922 |
7752 |
16936 |
1717 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2 |
981 |
38 |
88 |
24 |
3 |
1 |
0 |
| OW |
0 |
77 |
32 |
40 |
6 |
3 |
0 |
0 |
| VODI |
0 |
76 |
42 |
91 |
59 |
5 |
5 |
0 |
| ODI |
0 |
89 |
27 |
108 |
154 |
63 |
26 |
0 |
| CDI |
0 |
198 |
55 |
191 |
532 |
966 |
334 |
0 |
| VCDI |
0 |
67 |
71 |
199 |
963 |
7800 |
16949 |
1717 |
|
Date: 2023-05-29:
| 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 |
0 |
1132 |
58 |
83 |
32 |
4 |
0 |
0 |
| OW |
0 |
165 |
60 |
61 |
14 |
4 |
0 |
0 |
| VODI |
0 |
140 |
64 |
184 |
86 |
24 |
4 |
0 |
| ODI |
0 |
93 |
32 |
124 |
235 |
151 |
28 |
0 |
| CDI |
0 |
85 |
58 |
176 |
424 |
1198 |
827 |
3 |
| VCDI |
0 |
50 |
45 |
129 |
194 |
5351 |
20221 |
543 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1070 |
53 |
89 |
34 |
3 |
0 |
0 |
| OW |
0 |
102 |
36 |
36 |
10 |
5 |
0 |
0 |
| VODI |
0 |
89 |
53 |
132 |
63 |
31 |
13 |
0 |
| ODI |
0 |
117 |
33 |
120 |
159 |
115 |
102 |
0 |
| CDI |
0 |
172 |
64 |
159 |
366 |
765 |
857 |
6 |
| VCDI |
0 |
115 |
78 |
221 |
353 |
5813 |
20108 |
540 |
|
Date: 2023-05-31:
| 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 |
38 |
1280 |
68 |
82 |
18 |
2 |
0 |
0 |
| OW |
0 |
163 |
62 |
76 |
20 |
5 |
0 |
0 |
| VODI |
0 |
142 |
59 |
135 |
105 |
28 |
11 |
0 |
| ODI |
0 |
102 |
40 |
130 |
195 |
164 |
44 |
0 |
| CDI |
0 |
74 |
51 |
149 |
481 |
1147 |
662 |
4 |
| VCDI |
0 |
54 |
52 |
187 |
374 |
6546 |
18938 |
394 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
38 |
1103 |
43 |
62 |
17 |
1 |
0 |
0 |
| OW |
0 |
143 |
26 |
26 |
8 |
3 |
0 |
0 |
| VODI |
0 |
135 |
68 |
96 |
45 |
34 |
28 |
0 |
| ODI |
0 |
132 |
41 |
143 |
143 |
122 |
152 |
1 |
| CDI |
0 |
164 |
72 |
173 |
490 |
892 |
772 |
3 |
| VCDI |
0 |
138 |
82 |
259 |
490 |
6840 |
18703 |
394 |
|
Date: 2023-06-02:
| 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 |
56 |
1426 |
58 |
94 |
8 |
0 |
0 |
0 |
| OW |
0 |
182 |
59 |
51 |
21 |
0 |
0 |
0 |
| VODI |
0 |
194 |
76 |
159 |
87 |
32 |
24 |
0 |
| ODI |
0 |
113 |
51 |
143 |
178 |
230 |
90 |
1 |
| CDI |
0 |
101 |
69 |
200 |
530 |
1544 |
748 |
0 |
| VCDI |
0 |
89 |
58 |
201 |
313 |
5292 |
18936 |
668 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
56 |
1190 |
26 |
60 |
6 |
0 |
0 |
0 |
| OW |
0 |
160 |
22 |
31 |
16 |
5 |
6 |
0 |
| VODI |
0 |
174 |
71 |
96 |
52 |
38 |
40 |
0 |
| ODI |
0 |
188 |
80 |
150 |
109 |
202 |
139 |
1 |
| CDI |
0 |
246 |
98 |
285 |
564 |
1168 |
915 |
0 |
| VCDI |
0 |
147 |
74 |
226 |
390 |
5685 |
18698 |
668 |
|
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