Validation of sea ice concentration - Asian sector
Bulletin date: 2023-05-18
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2023-05-14:
| 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 |
0 |
319 |
13 |
19 |
2 |
0 |
0 |
0 |
| OW |
0 |
34 |
2 |
9 |
5 |
2 |
0 |
0 |
| VODI |
0 |
41 |
4 |
7 |
2 |
3 |
1 |
0 |
| ODI |
0 |
25 |
4 |
15 |
25 |
18 |
65 |
0 |
| CDI |
0 |
28 |
8 |
49 |
140 |
272 |
205 |
2 |
| VCDI |
0 |
17 |
12 |
30 |
177 |
1891 |
14647 |
13989 |
|
...date precedes bulletin
|
Date: 2023-05-16:
| 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 |
390 |
15 |
17 |
0 |
0 |
0 |
0 |
| OW |
0 |
40 |
6 |
6 |
5 |
1 |
0 |
0 |
| VODI |
0 |
24 |
13 |
35 |
17 |
4 |
0 |
0 |
| ODI |
0 |
12 |
13 |
29 |
58 |
50 |
36 |
0 |
| CDI |
0 |
18 |
15 |
42 |
140 |
472 |
295 |
0 |
| VCDI |
0 |
0 |
9 |
104 |
251 |
1662 |
14820 |
13483 |
|
...date precedes bulletin
|
Date: 2023-05-18:
| 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 |
455 |
6 |
15 |
1 |
2 |
0 |
0 |
| OW |
0 |
49 |
7 |
14 |
11 |
2 |
0 |
0 |
| VODI |
0 |
57 |
15 |
35 |
38 |
0 |
0 |
0 |
| ODI |
0 |
31 |
17 |
38 |
75 |
14 |
4 |
0 |
| CDI |
0 |
40 |
25 |
71 |
223 |
372 |
227 |
0 |
| VCDI |
0 |
5 |
17 |
75 |
406 |
4314 |
13383 |
12038 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
437 |
6 |
15 |
5 |
1 |
0 |
0 |
| OW |
0 |
57 |
7 |
18 |
13 |
3 |
0 |
0 |
| VODI |
0 |
60 |
16 |
29 |
40 |
2 |
0 |
0 |
| ODI |
0 |
36 |
12 |
39 |
67 |
14 |
4 |
0 |
| CDI |
0 |
43 |
32 |
70 |
200 |
302 |
213 |
0 |
| VCDI |
0 |
4 |
14 |
77 |
429 |
4382 |
13397 |
12038 |
|
Date: 2023-05-20:
| 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 |
458 |
11 |
17 |
2 |
2 |
0 |
0 |
| OW |
0 |
62 |
7 |
19 |
22 |
1 |
1 |
0 |
| VODI |
0 |
63 |
18 |
26 |
45 |
8 |
0 |
0 |
| ODI |
0 |
30 |
12 |
41 |
69 |
27 |
52 |
0 |
| CDI |
0 |
20 |
15 |
61 |
219 |
452 |
335 |
0 |
| VCDI |
0 |
18 |
30 |
191 |
530 |
3233 |
14372 |
11613 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
455 |
13 |
20 |
5 |
2 |
0 |
0 |
| OW |
0 |
52 |
7 |
16 |
23 |
1 |
1 |
0 |
| VODI |
0 |
67 |
15 |
24 |
46 |
10 |
0 |
0 |
| ODI |
0 |
37 |
7 |
38 |
61 |
28 |
51 |
0 |
| CDI |
0 |
25 |
22 |
66 |
211 |
376 |
351 |
0 |
| VCDI |
0 |
15 |
29 |
191 |
541 |
3306 |
14357 |
11613 |
|
Date: 2023-05-22:
| 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 |
592 |
10 |
18 |
5 |
3 |
1 |
0 |
| OW |
0 |
114 |
22 |
32 |
9 |
1 |
0 |
0 |
| VODI |
0 |
63 |
40 |
110 |
99 |
9 |
2 |
0 |
| ODI |
0 |
27 |
22 |
81 |
161 |
52 |
6 |
0 |
| CDI |
0 |
33 |
33 |
115 |
348 |
1203 |
217 |
0 |
| VCDI |
0 |
5 |
15 |
101 |
250 |
3182 |
14757 |
10344 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
540 |
16 |
28 |
5 |
2 |
1 |
0 |
| OW |
0 |
78 |
7 |
22 |
22 |
3 |
0 |
0 |
| VODI |
0 |
78 |
23 |
38 |
42 |
0 |
0 |
0 |
| ODI |
0 |
39 |
13 |
65 |
67 |
14 |
2 |
0 |
| CDI |
0 |
61 |
33 |
104 |
267 |
531 |
153 |
0 |
| VCDI |
0 |
38 |
50 |
200 |
469 |
3900 |
14827 |
10344 |
|
Date: 2023-05-24:
| 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 |
8 |
740 |
29 |
26 |
9 |
4 |
0 |
0 |
| OW |
0 |
85 |
32 |
78 |
40 |
3 |
1 |
0 |
| VODI |
0 |
48 |
24 |
96 |
70 |
7 |
1 |
0 |
| ODI |
0 |
57 |
20 |
80 |
179 |
47 |
15 |
0 |
| CDI |
0 |
103 |
48 |
138 |
319 |
973 |
316 |
0 |
| VCDI |
0 |
26 |
25 |
128 |
352 |
3503 |
16736 |
7716 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8 |
602 |
17 |
27 |
12 |
3 |
0 |
0 |
| OW |
0 |
88 |
14 |
20 |
23 |
1 |
0 |
0 |
| VODI |
0 |
94 |
21 |
44 |
28 |
1 |
2 |
0 |
| ODI |
0 |
61 |
26 |
83 |
59 |
9 |
19 |
0 |
| CDI |
0 |
90 |
48 |
148 |
344 |
466 |
155 |
0 |
| VCDI |
0 |
124 |
52 |
224 |
503 |
4057 |
16893 |
7716 |
|
Date: 2023-05-26:
| 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 |
3 |
918 |
38 |
77 |
20 |
4 |
0 |
0 |
| OW |
0 |
96 |
29 |
41 |
11 |
4 |
0 |
0 |
| VODI |
0 |
73 |
31 |
104 |
57 |
6 |
2 |
0 |
| ODI |
0 |
69 |
28 |
94 |
197 |
59 |
16 |
0 |
| CDI |
0 |
171 |
57 |
171 |
446 |
1052 |
193 |
0 |
| VCDI |
0 |
55 |
49 |
161 |
607 |
6576 |
18904 |
1663 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3 |
708 |
18 |
23 |
8 |
3 |
0 |
0 |
| OW |
0 |
113 |
3 |
21 |
17 |
0 |
0 |
0 |
| VODI |
0 |
122 |
21 |
47 |
2 |
2 |
0 |
0 |
| ODI |
0 |
85 |
31 |
73 |
51 |
11 |
9 |
0 |
| CDI |
0 |
148 |
71 |
187 |
404 |
600 |
142 |
0 |
| VCDI |
0 |
206 |
88 |
297 |
856 |
7085 |
18964 |
1663 |
|
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