Validation of sea ice concentration - American sector
Bulletin date: 2022-12-22
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2022-12-16:
| 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 |
145 |
48 |
56 |
9 |
0 |
0 |
0 |
| OW |
0 |
107 |
90 |
180 |
145 |
19 |
1 |
0 |
| VODI |
0 |
47 |
79 |
204 |
208 |
259 |
55 |
0 |
| ODI |
0 |
30 |
81 |
255 |
409 |
632 |
40 |
0 |
| CDI |
0 |
2 |
11 |
112 |
467 |
1199 |
64 |
0 |
| VCDI |
0 |
5 |
8 |
31 |
802 |
5414 |
15237 |
19415 |
|
...date precedes bulletin
|
Date: 2022-12-18:
| 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 |
46 |
42 |
46 |
7 |
0 |
0 |
0 |
| OW |
0 |
65 |
119 |
103 |
153 |
27 |
7 |
0 |
| VODI |
0 |
28 |
69 |
218 |
265 |
182 |
121 |
0 |
| ODI |
0 |
17 |
70 |
195 |
330 |
351 |
225 |
0 |
| CDI |
0 |
3 |
30 |
81 |
269 |
696 |
529 |
0 |
| VCDI |
0 |
0 |
6 |
44 |
263 |
4510 |
15107 |
21642 |
|
...date precedes bulletin
|
Date: 2022-12-20:
| 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 |
24 |
6 |
32 |
3 |
0 |
0 |
0 |
| OW |
0 |
37 |
35 |
82 |
31 |
1 |
0 |
0 |
| VODI |
0 |
43 |
71 |
260 |
374 |
36 |
0 |
0 |
| ODI |
0 |
8 |
6 |
205 |
739 |
280 |
41 |
0 |
| CDI |
0 |
2 |
4 |
30 |
252 |
687 |
211 |
0 |
| VCDI |
0 |
0 |
0 |
17 |
176 |
3879 |
15650 |
22644 |
|
...date precedes bulletin
|
Date: 2022-12-22:
| 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 |
13 |
6 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
6 |
19 |
84 |
38 |
2 |
0 |
0 |
| VODI |
0 |
18 |
54 |
149 |
92 |
43 |
0 |
0 |
| ODI |
0 |
18 |
21 |
113 |
540 |
376 |
47 |
0 |
| CDI |
0 |
6 |
3 |
78 |
356 |
701 |
341 |
0 |
| VCDI |
0 |
0 |
7 |
29 |
197 |
3074 |
14728 |
24702 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
12 |
6 |
23 |
7 |
0 |
0 |
0 |
| OW |
0 |
7 |
18 |
56 |
28 |
2 |
0 |
0 |
| VODI |
0 |
13 |
50 |
158 |
135 |
64 |
0 |
0 |
| ODI |
0 |
21 |
23 |
105 |
521 |
385 |
18 |
0 |
| CDI |
0 |
8 |
7 |
86 |
353 |
698 |
268 |
0 |
| VCDI |
0 |
0 |
6 |
30 |
179 |
3047 |
14830 |
24702 |
|
Date: 2022-12-24:
| 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 |
10 |
4 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
8 |
20 |
45 |
5 |
0 |
0 |
0 |
| VODI |
0 |
9 |
40 |
128 |
21 |
7 |
0 |
0 |
| ODI |
0 |
5 |
61 |
407 |
316 |
68 |
0 |
0 |
| CDI |
0 |
8 |
15 |
287 |
732 |
392 |
18 |
0 |
| VCDI |
0 |
1 |
9 |
63 |
342 |
2996 |
13933 |
25916 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
11 |
2 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
7 |
16 |
44 |
9 |
0 |
0 |
0 |
| VODI |
0 |
7 |
33 |
123 |
22 |
10 |
0 |
0 |
| ODI |
0 |
3 |
61 |
363 |
260 |
78 |
0 |
0 |
| CDI |
0 |
11 |
22 |
225 |
721 |
398 |
20 |
0 |
| VCDI |
0 |
2 |
15 |
175 |
404 |
2977 |
13931 |
25916 |
|
Date: 2022-12-26:
| 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 |
82 |
15 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
72 |
42 |
41 |
4 |
0 |
0 |
0 |
| VODI |
0 |
115 |
109 |
491 |
101 |
5 |
1 |
0 |
| ODI |
0 |
56 |
53 |
343 |
277 |
95 |
11 |
0 |
| CDI |
0 |
6 |
6 |
95 |
375 |
314 |
29 |
6 |
| VCDI |
0 |
4 |
0 |
47 |
422 |
2414 |
14125 |
26109 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
41 |
7 |
14 |
2 |
0 |
0 |
0 |
| OW |
0 |
100 |
46 |
41 |
29 |
4 |
0 |
0 |
| VODI |
0 |
86 |
72 |
201 |
69 |
42 |
0 |
0 |
| ODI |
0 |
79 |
64 |
280 |
150 |
93 |
15 |
0 |
| CDI |
0 |
24 |
34 |
340 |
295 |
196 |
68 |
0 |
| VCDI |
0 |
5 |
2 |
142 |
634 |
2493 |
14083 |
26115 |
|
Date: 2022-12-28:
| 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 |
16 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
41 |
25 |
56 |
7 |
0 |
0 |
0 |
| VODI |
0 |
15 |
59 |
188 |
109 |
25 |
0 |
0 |
| ODI |
0 |
2 |
32 |
261 |
299 |
155 |
22 |
0 |
| CDI |
0 |
1 |
0 |
79 |
261 |
371 |
198 |
0 |
| VCDI |
0 |
0 |
2 |
7 |
358 |
2862 |
13678 |
26737 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
4 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
27 |
9 |
10 |
1 |
6 |
0 |
0 |
| VODI |
0 |
40 |
47 |
167 |
92 |
89 |
30 |
0 |
| ODI |
0 |
4 |
52 |
212 |
167 |
83 |
56 |
0 |
| CDI |
0 |
0 |
8 |
181 |
334 |
308 |
172 |
0 |
| VCDI |
0 |
0 |
2 |
21 |
440 |
2927 |
13640 |
26737 |
|
Date: 2022-12-30:
| 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 |
3 |
4 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
15 |
11 |
11 |
11 |
2 |
0 |
0 |
| VODI |
0 |
6 |
22 |
81 |
104 |
11 |
0 |
0 |
| ODI |
0 |
0 |
23 |
128 |
231 |
135 |
13 |
0 |
| CDI |
0 |
0 |
0 |
76 |
343 |
365 |
116 |
18 |
| VCDI |
0 |
0 |
0 |
5 |
133 |
2386 |
12217 |
29396 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
3 |
7 |
6 |
0 |
0 |
0 |
0 |
| VODI |
0 |
21 |
9 |
49 |
73 |
40 |
48 |
0 |
| ODI |
0 |
0 |
28 |
79 |
150 |
107 |
50 |
0 |
| CDI |
0 |
0 |
15 |
110 |
303 |
307 |
142 |
23 |
| VCDI |
0 |
0 |
0 |
57 |
296 |
2445 |
12106 |
29391 |
|
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