Validation of sea ice concentration - Asian sector
Bulletin date: 2023-11-23
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-11-17:
| 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 |
28 |
1809 |
30 |
21 |
0 |
0 |
0 |
0 |
| OW |
0 |
230 |
31 |
26 |
2 |
0 |
0 |
0 |
| VODI |
0 |
31 |
45 |
94 |
60 |
16 |
0 |
0 |
| ODI |
0 |
10 |
9 |
36 |
120 |
70 |
2 |
0 |
| CDI |
0 |
0 |
3 |
12 |
101 |
368 |
58 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
32 |
1311 |
14851 |
12676 |
|
...date precedes bulletin
|
Date: 2023-11-19:
| 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 |
1408 |
72 |
97 |
9 |
0 |
0 |
0 |
| OW |
0 |
172 |
44 |
70 |
35 |
0 |
0 |
0 |
| VODI |
0 |
33 |
36 |
158 |
46 |
11 |
0 |
0 |
| ODI |
0 |
3 |
4 |
31 |
128 |
61 |
2 |
0 |
| CDI |
0 |
0 |
2 |
14 |
97 |
273 |
43 |
1 |
| VCDI |
0 |
0 |
0 |
4 |
63 |
678 |
13337 |
15150 |
|
...date precedes bulletin
|
Date: 2023-11-21:
| 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 |
1300 |
58 |
71 |
14 |
0 |
0 |
0 |
| OW |
0 |
180 |
17 |
47 |
29 |
5 |
0 |
0 |
| VODI |
0 |
84 |
74 |
114 |
64 |
6 |
0 |
0 |
| ODI |
0 |
4 |
16 |
75 |
143 |
50 |
0 |
0 |
| CDI |
0 |
2 |
3 |
32 |
133 |
271 |
55 |
0 |
| VCDI |
0 |
4 |
5 |
12 |
49 |
558 |
9737 |
18870 |
|
...date precedes bulletin
|
Date: 2023-11-23:
| 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 |
1 |
1308 |
34 |
17 |
10 |
0 |
0 |
0 |
| OW |
0 |
198 |
46 |
66 |
8 |
0 |
0 |
0 |
| VODI |
0 |
139 |
66 |
129 |
39 |
0 |
0 |
0 |
| ODI |
0 |
34 |
28 |
90 |
83 |
37 |
0 |
0 |
| CDI |
0 |
35 |
14 |
38 |
138 |
244 |
89 |
0 |
| VCDI |
0 |
20 |
24 |
60 |
119 |
733 |
9571 |
18664 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1 |
1292 |
41 |
24 |
10 |
0 |
0 |
0 |
| OW |
0 |
213 |
38 |
58 |
11 |
0 |
0 |
0 |
| VODI |
0 |
131 |
61 |
136 |
38 |
0 |
0 |
0 |
| ODI |
0 |
39 |
34 |
86 |
84 |
35 |
0 |
0 |
| CDI |
0 |
30 |
13 |
29 |
135 |
239 |
96 |
0 |
| VCDI |
0 |
29 |
25 |
67 |
119 |
740 |
9564 |
18664 |
|
Date: 2023-11-25:
| 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 |
4 |
1340 |
33 |
30 |
2 |
0 |
0 |
0 |
| OW |
0 |
277 |
46 |
34 |
21 |
0 |
0 |
0 |
| VODI |
0 |
161 |
45 |
111 |
48 |
0 |
0 |
0 |
| ODI |
0 |
83 |
20 |
86 |
35 |
1 |
0 |
0 |
| CDI |
0 |
62 |
33 |
66 |
97 |
113 |
82 |
0 |
| VCDI |
0 |
141 |
41 |
101 |
176 |
775 |
9514 |
18504 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
4 |
1352 |
34 |
28 |
2 |
0 |
0 |
0 |
| OW |
0 |
249 |
52 |
41 |
19 |
0 |
0 |
0 |
| VODI |
0 |
175 |
36 |
106 |
53 |
0 |
0 |
0 |
| ODI |
0 |
85 |
29 |
93 |
33 |
1 |
0 |
0 |
| CDI |
0 |
57 |
25 |
64 |
106 |
134 |
108 |
0 |
| VCDI |
0 |
146 |
42 |
96 |
166 |
754 |
9488 |
18504 |
|
Date: 2023-11-27:
| 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 |
1223 |
33 |
37 |
2 |
0 |
0 |
0 |
| OW |
0 |
388 |
54 |
44 |
4 |
0 |
0 |
0 |
| VODI |
0 |
105 |
97 |
169 |
44 |
1 |
0 |
0 |
| ODI |
0 |
20 |
15 |
88 |
208 |
19 |
0 |
0 |
| CDI |
0 |
35 |
19 |
44 |
172 |
173 |
45 |
0 |
| VCDI |
0 |
67 |
33 |
82 |
110 |
733 |
12115 |
15901 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2 |
1199 |
41 |
48 |
3 |
0 |
0 |
0 |
| OW |
0 |
254 |
58 |
56 |
23 |
0 |
0 |
0 |
| VODI |
0 |
142 |
62 |
117 |
90 |
6 |
0 |
0 |
| ODI |
0 |
68 |
25 |
65 |
118 |
14 |
0 |
0 |
| CDI |
0 |
47 |
13 |
60 |
100 |
110 |
47 |
0 |
| VCDI |
0 |
128 |
52 |
118 |
206 |
796 |
12113 |
15901 |
|
Date: 2023-11-29:
| 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 |
4 |
1047 |
28 |
27 |
22 |
0 |
0 |
0 |
| OW |
0 |
358 |
46 |
50 |
51 |
0 |
0 |
0 |
| VODI |
0 |
126 |
57 |
146 |
90 |
11 |
0 |
0 |
| ODI |
0 |
40 |
27 |
70 |
149 |
109 |
0 |
0 |
| CDI |
0 |
63 |
12 |
60 |
170 |
367 |
19 |
0 |
| VCDI |
0 |
127 |
28 |
76 |
262 |
1738 |
13291 |
13411 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
4 |
1002 |
42 |
37 |
19 |
0 |
0 |
0 |
| OW |
0 |
272 |
44 |
73 |
49 |
0 |
0 |
0 |
| VODI |
0 |
153 |
31 |
84 |
120 |
58 |
0 |
0 |
| ODI |
0 |
93 |
26 |
80 |
108 |
50 |
0 |
0 |
| CDI |
0 |
52 |
20 |
61 |
150 |
332 |
27 |
0 |
| VCDI |
0 |
189 |
35 |
94 |
298 |
1785 |
13283 |
13411 |
|
Date: 2023-12-01:
| 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 |
0 |
852 |
31 |
17 |
15 |
0 |
0 |
0 |
| OW |
0 |
318 |
51 |
71 |
77 |
0 |
0 |
0 |
| VODI |
0 |
161 |
64 |
160 |
119 |
12 |
0 |
0 |
| ODI |
0 |
22 |
19 |
85 |
191 |
74 |
2 |
0 |
| CDI |
0 |
24 |
20 |
36 |
89 |
279 |
103 |
0 |
| VCDI |
0 |
4 |
4 |
49 |
147 |
1654 |
11587 |
15745 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
775 |
33 |
35 |
22 |
0 |
0 |
0 |
| OW |
0 |
262 |
59 |
70 |
55 |
0 |
0 |
0 |
| VODI |
0 |
181 |
22 |
92 |
152 |
51 |
0 |
0 |
| ODI |
0 |
123 |
27 |
68 |
143 |
67 |
21 |
0 |
| CDI |
0 |
34 |
40 |
93 |
101 |
307 |
153 |
0 |
| VCDI |
0 |
6 |
8 |
60 |
165 |
1594 |
11518 |
15745 |
|
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