Validation of sea ice concentration - American sector
Bulletin date: 2023-05-11
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-05-05:
| 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 |
8 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
17 |
7 |
7 |
5 |
0 |
0 |
0 |
| VODI |
0 |
30 |
13 |
36 |
29 |
11 |
20 |
0 |
| ODI |
0 |
20 |
17 |
92 |
106 |
79 |
45 |
0 |
| CDI |
0 |
21 |
26 |
141 |
506 |
631 |
541 |
0 |
| VCDI |
0 |
39 |
21 |
181 |
493 |
2544 |
18875 |
21304 |
|
...date precedes bulletin
|
Date: 2023-05-07:
| 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 |
6 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
36 |
7 |
6 |
3 |
0 |
0 |
0 |
| VODI |
0 |
25 |
23 |
47 |
49 |
26 |
7 |
0 |
| ODI |
0 |
35 |
26 |
66 |
130 |
174 |
63 |
0 |
| CDI |
0 |
47 |
50 |
135 |
301 |
456 |
729 |
2 |
| VCDI |
0 |
111 |
57 |
184 |
638 |
2676 |
19092 |
20659 |
|
...date precedes bulletin
|
Date: 2023-05-09:
| 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 |
39 |
5 |
8 |
1 |
0 |
0 |
0 |
| OW |
0 |
48 |
17 |
33 |
9 |
2 |
0 |
0 |
| VODI |
0 |
45 |
43 |
67 |
97 |
12 |
1 |
0 |
| ODI |
0 |
26 |
30 |
73 |
174 |
148 |
17 |
0 |
| CDI |
0 |
57 |
54 |
185 |
444 |
710 |
494 |
12 |
| VCDI |
0 |
44 |
36 |
214 |
431 |
3255 |
20315 |
18720 |
|
...date precedes bulletin
|
Date: 2023-05-11:
| 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 |
30 |
11 |
25 |
5 |
0 |
0 |
0 |
| OW |
0 |
37 |
5 |
46 |
14 |
8 |
0 |
0 |
| VODI |
0 |
62 |
34 |
44 |
109 |
26 |
1 |
0 |
| ODI |
0 |
21 |
37 |
82 |
184 |
159 |
31 |
0 |
| CDI |
0 |
43 |
42 |
169 |
513 |
886 |
670 |
1 |
| VCDI |
0 |
44 |
56 |
257 |
444 |
4444 |
18091 |
19235 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
22 |
10 |
37 |
7 |
1 |
0 |
0 |
| OW |
0 |
40 |
6 |
39 |
30 |
11 |
0 |
0 |
| VODI |
0 |
65 |
32 |
40 |
114 |
36 |
2 |
0 |
| ODI |
0 |
23 |
39 |
76 |
164 |
149 |
27 |
0 |
| CDI |
0 |
47 |
49 |
185 |
533 |
890 |
758 |
4 |
| VCDI |
0 |
40 |
49 |
246 |
421 |
4436 |
18006 |
19232 |
|
Date: 2023-05-13:
| 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 |
51 |
11 |
21 |
3 |
0 |
0 |
0 |
| OW |
0 |
53 |
13 |
63 |
36 |
3 |
0 |
0 |
| VODI |
0 |
85 |
31 |
79 |
135 |
59 |
8 |
0 |
| ODI |
0 |
36 |
40 |
117 |
174 |
236 |
57 |
0 |
| CDI |
0 |
28 |
37 |
200 |
418 |
782 |
719 |
4 |
| VCDI |
0 |
117 |
61 |
296 |
442 |
3400 |
17064 |
20987 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
52 |
15 |
30 |
8 |
0 |
0 |
0 |
| OW |
0 |
38 |
6 |
59 |
45 |
4 |
0 |
0 |
| VODI |
0 |
89 |
29 |
67 |
120 |
60 |
5 |
0 |
| ODI |
0 |
45 |
48 |
127 |
178 |
259 |
46 |
0 |
| CDI |
0 |
39 |
36 |
208 |
428 |
754 |
703 |
4 |
| VCDI |
0 |
107 |
59 |
285 |
429 |
3403 |
17094 |
20987 |
|
Date: 2023-05-15:
| 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 |
169 |
5 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
103 |
46 |
89 |
18 |
2 |
0 |
0 |
| VODI |
0 |
138 |
65 |
268 |
161 |
15 |
4 |
0 |
| ODI |
0 |
88 |
50 |
245 |
392 |
253 |
66 |
0 |
| CDI |
0 |
42 |
24 |
174 |
454 |
1591 |
757 |
1 |
| VCDI |
0 |
10 |
14 |
66 |
181 |
5678 |
20782 |
13908 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
67 |
11 |
35 |
7 |
0 |
0 |
0 |
| OW |
0 |
72 |
10 |
69 |
28 |
5 |
1 |
0 |
| VODI |
0 |
98 |
38 |
132 |
152 |
82 |
37 |
0 |
| ODI |
0 |
70 |
37 |
152 |
213 |
259 |
137 |
0 |
| CDI |
0 |
105 |
46 |
210 |
360 |
837 |
1007 |
0 |
| VCDI |
0 |
138 |
62 |
251 |
446 |
6356 |
20427 |
13909 |
|
Date: 2023-05-17:
| 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 |
0 |
286 |
14 |
6 |
1 |
0 |
0 |
0 |
| OW |
0 |
218 |
45 |
89 |
16 |
2 |
0 |
0 |
| VODI |
0 |
204 |
104 |
209 |
168 |
44 |
14 |
0 |
| ODI |
0 |
96 |
56 |
200 |
266 |
205 |
89 |
0 |
| CDI |
0 |
58 |
35 |
216 |
351 |
1038 |
768 |
0 |
| VCDI |
0 |
6 |
14 |
106 |
399 |
3337 |
20697 |
16509 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
139 |
10 |
15 |
2 |
4 |
1 |
0 |
| OW |
0 |
144 |
23 |
45 |
14 |
8 |
3 |
0 |
| VODI |
0 |
168 |
57 |
124 |
141 |
55 |
49 |
0 |
| ODI |
0 |
132 |
57 |
139 |
227 |
243 |
152 |
0 |
| CDI |
0 |
139 |
63 |
299 |
330 |
752 |
903 |
11 |
| VCDI |
0 |
146 |
58 |
204 |
487 |
3564 |
20460 |
16498 |
|
Date: 2023-05-19:
| 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 |
226 |
14 |
24 |
1 |
0 |
0 |
0 |
| OW |
0 |
263 |
66 |
99 |
43 |
2 |
0 |
0 |
| VODI |
0 |
239 |
110 |
238 |
213 |
102 |
25 |
0 |
| ODI |
0 |
78 |
60 |
221 |
303 |
232 |
155 |
0 |
| CDI |
0 |
78 |
46 |
187 |
292 |
613 |
1157 |
0 |
| VCDI |
0 |
22 |
14 |
105 |
455 |
3614 |
24550 |
12019 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
154 |
18 |
27 |
4 |
0 |
0 |
0 |
| OW |
0 |
183 |
34 |
46 |
25 |
11 |
0 |
0 |
| VODI |
0 |
202 |
79 |
161 |
168 |
90 |
55 |
0 |
| ODI |
0 |
114 |
79 |
212 |
291 |
238 |
230 |
1 |
| CDI |
0 |
95 |
45 |
245 |
300 |
529 |
1234 |
10 |
| VCDI |
0 |
158 |
55 |
183 |
519 |
3695 |
24368 |
12008 |
|
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