Validation of sea ice concentration - Asian sector
Bulletin date: 2023-05-04
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-04-28:
| 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 |
121 |
27 |
11 |
1 |
0 |
0 |
0 |
| OW |
0 |
43 |
11 |
29 |
9 |
0 |
0 |
0 |
| VODI |
0 |
72 |
16 |
17 |
14 |
3 |
0 |
0 |
| ODI |
0 |
50 |
4 |
7 |
36 |
31 |
8 |
0 |
| CDI |
0 |
78 |
0 |
17 |
106 |
86 |
80 |
0 |
| VCDI |
0 |
66 |
23 |
65 |
265 |
1699 |
10212 |
18875 |
|
...date precedes bulletin
|
Date: 2023-04-30:
| 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 |
125 |
14 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
65 |
19 |
26 |
13 |
2 |
0 |
0 |
| VODI |
0 |
48 |
18 |
27 |
17 |
13 |
1 |
0 |
| ODI |
0 |
43 |
1 |
5 |
11 |
5 |
3 |
0 |
| CDI |
0 |
56 |
2 |
6 |
39 |
66 |
89 |
9 |
| VCDI |
0 |
82 |
15 |
49 |
272 |
1241 |
10072 |
19619 |
|
...date precedes bulletin
|
Date: 2023-05-02:
| 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 |
0 |
243 |
24 |
36 |
11 |
0 |
0 |
0 |
| OW |
0 |
62 |
9 |
13 |
7 |
0 |
0 |
0 |
| VODI |
0 |
44 |
4 |
29 |
14 |
16 |
1 |
0 |
| ODI |
0 |
34 |
6 |
7 |
31 |
5 |
0 |
0 |
| CDI |
0 |
31 |
15 |
32 |
135 |
123 |
37 |
3 |
| VCDI |
0 |
0 |
0 |
13 |
195 |
1418 |
12204 |
17280 |
|
...date precedes bulletin
|
Date: 2023-05-04:
| 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 |
201 |
26 |
32 |
2 |
0 |
0 |
0 |
| OW |
0 |
66 |
11 |
20 |
12 |
3 |
1 |
0 |
| VODI |
0 |
41 |
4 |
4 |
8 |
7 |
10 |
0 |
| ODI |
0 |
25 |
6 |
16 |
29 |
10 |
7 |
0 |
| CDI |
0 |
28 |
8 |
20 |
88 |
183 |
131 |
2 |
| VCDI |
0 |
10 |
7 |
20 |
145 |
2117 |
14447 |
14335 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
239 |
36 |
47 |
14 |
2 |
1 |
0 |
| OW |
0 |
40 |
1 |
8 |
4 |
5 |
3 |
0 |
| VODI |
0 |
39 |
6 |
4 |
4 |
3 |
7 |
0 |
| ODI |
0 |
19 |
6 |
16 |
36 |
10 |
5 |
0 |
| CDI |
0 |
23 |
6 |
18 |
88 |
179 |
152 |
5 |
| VCDI |
0 |
11 |
7 |
19 |
138 |
2121 |
14428 |
14332 |
|
Date: 2023-05-06:
| 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 |
189 |
24 |
20 |
0 |
0 |
0 |
0 |
| OW |
0 |
37 |
20 |
37 |
12 |
6 |
1 |
0 |
| VODI |
0 |
31 |
2 |
9 |
7 |
5 |
8 |
0 |
| ODI |
0 |
17 |
5 |
13 |
19 |
21 |
10 |
0 |
| CDI |
0 |
19 |
3 |
23 |
70 |
161 |
74 |
1 |
| VCDI |
0 |
13 |
8 |
24 |
167 |
1611 |
13548 |
15867 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
210 |
38 |
50 |
11 |
3 |
0 |
0 |
| OW |
0 |
19 |
7 |
9 |
3 |
5 |
3 |
0 |
| VODI |
0 |
33 |
3 |
11 |
5 |
3 |
6 |
0 |
| ODI |
0 |
15 |
3 |
12 |
22 |
24 |
9 |
0 |
| CDI |
0 |
17 |
3 |
20 |
71 |
155 |
75 |
4 |
| VCDI |
0 |
12 |
8 |
24 |
163 |
1614 |
13548 |
15864 |
|
Date: 2023-05-08:
| 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 |
287 |
17 |
13 |
2 |
0 |
0 |
0 |
| OW |
0 |
33 |
13 |
19 |
4 |
0 |
0 |
0 |
| VODI |
0 |
15 |
11 |
10 |
16 |
17 |
0 |
0 |
| ODI |
0 |
14 |
6 |
24 |
30 |
15 |
2 |
0 |
| CDI |
0 |
10 |
7 |
34 |
111 |
302 |
108 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
72 |
1059 |
15404 |
14427 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
235 |
23 |
31 |
6 |
0 |
0 |
0 |
| OW |
0 |
29 |
4 |
4 |
12 |
8 |
0 |
0 |
| VODI |
0 |
36 |
8 |
1 |
3 |
11 |
0 |
0 |
| ODI |
0 |
20 |
5 |
13 |
12 |
9 |
2 |
0 |
| CDI |
0 |
24 |
6 |
27 |
75 |
123 |
52 |
0 |
| VCDI |
0 |
15 |
8 |
24 |
127 |
1242 |
15460 |
14427 |
|
Date: 2023-05-10:
| 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 |
0 |
305 |
10 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
36 |
11 |
10 |
5 |
1 |
0 |
0 |
| VODI |
0 |
22 |
4 |
7 |
4 |
10 |
9 |
0 |
| ODI |
0 |
9 |
9 |
20 |
37 |
9 |
5 |
0 |
| CDI |
0 |
15 |
9 |
45 |
150 |
221 |
181 |
13 |
| VCDI |
0 |
1 |
2 |
24 |
222 |
1582 |
14754 |
14335 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
262 |
15 |
15 |
7 |
6 |
1 |
0 |
| OW |
0 |
29 |
2 |
2 |
1 |
2 |
7 |
0 |
| VODI |
0 |
32 |
6 |
0 |
0 |
1 |
2 |
0 |
| ODI |
0 |
26 |
1 |
9 |
5 |
5 |
5 |
0 |
| CDI |
0 |
23 |
13 |
35 |
72 |
59 |
109 |
3 |
| VCDI |
0 |
16 |
8 |
50 |
333 |
1750 |
14825 |
14345 |
|
Date: 2023-05-12:
| 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 |
0 |
324 |
8 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
43 |
6 |
11 |
9 |
1 |
0 |
0 |
| VODI |
0 |
34 |
4 |
3 |
1 |
11 |
4 |
0 |
| ODI |
0 |
21 |
13 |
11 |
14 |
15 |
21 |
0 |
| CDI |
0 |
18 |
20 |
48 |
92 |
149 |
191 |
15 |
| VCDI |
0 |
10 |
5 |
26 |
140 |
1260 |
14637 |
14908 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
278 |
14 |
20 |
9 |
6 |
2 |
0 |
| OW |
0 |
35 |
0 |
0 |
1 |
3 |
2 |
0 |
| VODI |
0 |
44 |
0 |
0 |
0 |
3 |
0 |
0 |
| ODI |
0 |
32 |
6 |
7 |
1 |
4 |
44 |
0 |
| CDI |
0 |
36 |
22 |
31 |
30 |
25 |
195 |
8 |
| VCDI |
0 |
25 |
14 |
50 |
215 |
1395 |
14610 |
14915 |
|
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