Validation of sea ice concentration - Asian sector
Bulletin date: 2021-04-22
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2021-04-16:
| 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 |
0 |
0 |
0 |
28 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
31 |
6 |
0 |
0 |
0 |
| VODI |
0 |
6 |
4 |
38 |
34 |
0 |
0 |
0 |
| ODI |
0 |
13 |
2 |
52 |
91 |
21 |
43 |
0 |
| CDI |
0 |
3 |
1 |
64 |
147 |
259 |
368 |
71 |
| VCDI |
0 |
30 |
11 |
144 |
232 |
1230 |
9081 |
20072 |
|
...date precedes bulletin
|
Date: 2021-04-18:
| 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 |
0 |
0 |
0 |
22 |
2 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
22 |
6 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
25 |
34 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
23 |
48 |
42 |
1 |
7 |
| CDI |
0 |
0 |
0 |
30 |
84 |
241 |
122 |
122 |
| VCDI |
0 |
0 |
0 |
70 |
270 |
911 |
7693 |
22307 |
|
...date precedes bulletin
|
Date: 2021-04-20:
| 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 |
0 |
64 |
5 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
40 |
5 |
33 |
0 |
0 |
0 |
0 |
| VODI |
0 |
15 |
1 |
54 |
30 |
0 |
0 |
0 |
| ODI |
0 |
8 |
1 |
36 |
124 |
15 |
2 |
0 |
| CDI |
0 |
0 |
0 |
44 |
140 |
252 |
94 |
38 |
| VCDI |
0 |
0 |
0 |
112 |
190 |
847 |
9881 |
20042 |
|
...date precedes bulletin
|
Date: 2021-04-22:
| 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 |
0 |
126 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
57 |
10 |
21 |
0 |
0 |
0 |
0 |
| VODI |
0 |
45 |
6 |
90 |
45 |
0 |
0 |
0 |
| ODI |
0 |
30 |
3 |
31 |
125 |
20 |
31 |
0 |
| CDI |
0 |
15 |
3 |
40 |
161 |
267 |
138 |
3 |
| VCDI |
0 |
45 |
6 |
96 |
257 |
1748 |
10123 |
18540 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
142 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
51 |
10 |
24 |
0 |
0 |
0 |
0 |
| VODI |
0 |
41 |
7 |
93 |
50 |
0 |
7 |
0 |
| ODI |
0 |
26 |
2 |
27 |
115 |
15 |
39 |
0 |
| CDI |
0 |
18 |
3 |
48 |
181 |
275 |
144 |
2 |
| VCDI |
0 |
40 |
6 |
86 |
242 |
1745 |
10102 |
18541 |
|
Date: 2021-04-24:
| 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 |
0 |
87 |
0 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
77 |
8 |
28 |
2 |
0 |
0 |
0 |
| VODI |
0 |
56 |
7 |
92 |
66 |
7 |
0 |
0 |
| ODI |
0 |
19 |
5 |
28 |
105 |
25 |
12 |
3 |
| CDI |
0 |
9 |
2 |
32 |
205 |
306 |
133 |
50 |
| VCDI |
0 |
27 |
4 |
82 |
325 |
1594 |
11129 |
17556 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
95 |
0 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
75 |
7 |
29 |
7 |
0 |
0 |
0 |
| VODI |
0 |
50 |
9 |
88 |
61 |
7 |
0 |
0 |
| ODI |
0 |
20 |
4 |
27 |
102 |
21 |
10 |
3 |
| CDI |
0 |
9 |
2 |
39 |
237 |
306 |
167 |
52 |
| VCDI |
0 |
26 |
4 |
78 |
296 |
1598 |
11097 |
17554 |
|
Date: 2021-04-26:
| 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 |
0 |
100 |
1 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
86 |
11 |
18 |
8 |
0 |
0 |
0 |
| VODI |
0 |
9 |
11 |
101 |
70 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
40 |
206 |
18 |
5 |
0 |
| CDI |
0 |
2 |
2 |
20 |
275 |
559 |
191 |
0 |
| VCDI |
0 |
3 |
5 |
61 |
150 |
1397 |
9796 |
18931 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
93 |
1 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
58 |
8 |
15 |
14 |
0 |
0 |
0 |
| VODI |
0 |
44 |
10 |
39 |
54 |
0 |
0 |
0 |
| ODI |
0 |
0 |
4 |
64 |
107 |
6 |
3 |
0 |
| CDI |
0 |
0 |
0 |
36 |
326 |
425 |
191 |
13 |
| VCDI |
0 |
5 |
7 |
86 |
208 |
1544 |
9798 |
18918 |
|
Date: 2021-04-28:
| 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 |
0 |
66 |
4 |
18 |
0 |
0 |
0 |
0 |
| OW |
0 |
7 |
7 |
96 |
6 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
51 |
90 |
3 |
0 |
0 |
| ODI |
0 |
0 |
0 |
8 |
131 |
45 |
1 |
0 |
| CDI |
0 |
0 |
0 |
0 |
172 |
626 |
442 |
8 |
| VCDI |
0 |
0 |
0 |
3 |
127 |
1398 |
8770 |
20003 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
63 |
2 |
12 |
0 |
0 |
0 |
0 |
| OW |
0 |
10 |
8 |
45 |
18 |
0 |
0 |
0 |
| VODI |
0 |
0 |
1 |
79 |
46 |
6 |
0 |
0 |
| ODI |
0 |
0 |
0 |
31 |
44 |
46 |
0 |
0 |
| CDI |
0 |
0 |
0 |
6 |
225 |
461 |
205 |
76 |
| VCDI |
0 |
0 |
0 |
3 |
193 |
1559 |
9008 |
19935 |
|
Date: 2021-04-30:
| 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 |
0 |
57 |
5 |
15 |
0 |
0 |
0 |
0 |
| OW |
0 |
11 |
2 |
75 |
19 |
0 |
0 |
0 |
| VODI |
0 |
0 |
3 |
51 |
131 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
20 |
95 |
46 |
30 |
0 |
| CDI |
0 |
0 |
0 |
1 |
203 |
640 |
340 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
166 |
1597 |
10601 |
17969 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
42 |
3 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
13 |
2 |
41 |
9 |
0 |
0 |
0 |
| VODI |
0 |
13 |
2 |
50 |
60 |
0 |
2 |
0 |
| ODI |
0 |
0 |
3 |
34 |
31 |
36 |
55 |
16 |
| CDI |
0 |
0 |
0 |
20 |
174 |
264 |
266 |
140 |
| VCDI |
0 |
0 |
0 |
8 |
340 |
1984 |
10648 |
17817 |
|
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