Validation of sea ice concentration - American sector
Bulletin date: 2025-01-23
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-17:
| 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 |
7239 |
2876 |
71 |
39 |
0 |
0 |
0 |
0 |
| OW |
0 |
290 |
80 |
369 |
39 |
0 |
0 |
0 |
| VODI |
0 |
49 |
33 |
390 |
315 |
71 |
0 |
0 |
| ODI |
0 |
1 |
2 |
82 |
327 |
314 |
21 |
0 |
| CDI |
0 |
0 |
0 |
33 |
244 |
809 |
501 |
37 |
| VCDI |
0 |
0 |
0 |
0 |
190 |
2039 |
11821 |
32949 |
|
...date precedes bulletin
|
Date: 2025-01-19:
| 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 |
7945 |
2157 |
74 |
65 |
0 |
0 |
0 |
0 |
| OW |
4 |
212 |
77 |
313 |
31 |
0 |
0 |
0 |
| VODI |
3 |
67 |
10 |
311 |
403 |
64 |
0 |
0 |
| ODI |
0 |
15 |
8 |
127 |
383 |
298 |
22 |
0 |
| CDI |
0 |
2 |
0 |
45 |
323 |
655 |
347 |
11 |
| VCDI |
0 |
1 |
0 |
10 |
526 |
3742 |
12799 |
30181 |
|
...date precedes bulletin
|
Date: 2025-01-21:
| 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 |
7751 |
2255 |
45 |
34 |
3 |
0 |
0 |
0 |
| OW |
3 |
102 |
60 |
149 |
37 |
0 |
0 |
0 |
| VODI |
3 |
22 |
14 |
254 |
260 |
23 |
0 |
0 |
| ODI |
0 |
6 |
1 |
101 |
487 |
156 |
0 |
0 |
| CDI |
0 |
0 |
0 |
18 |
254 |
882 |
371 |
6 |
| VCDI |
0 |
0 |
0 |
0 |
171 |
3353 |
15216 |
29194 |
|
...date precedes bulletin
|
Date: 2025-01-23:
| 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 |
7928 |
2168 |
30 |
45 |
6 |
0 |
0 |
0 |
| OW |
3 |
160 |
64 |
114 |
22 |
0 |
0 |
0 |
| VODI |
1 |
12 |
22 |
120 |
138 |
10 |
0 |
0 |
| ODI |
0 |
1 |
0 |
32 |
212 |
148 |
0 |
0 |
| CDI |
0 |
0 |
0 |
14 |
212 |
784 |
110 |
13 |
| VCDI |
0 |
0 |
0 |
13 |
242 |
4074 |
14295 |
30238 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7928 |
2175 |
34 |
40 |
4 |
0 |
0 |
0 |
| OW |
2 |
143 |
61 |
125 |
27 |
0 |
0 |
0 |
| VODI |
2 |
19 |
21 |
118 |
142 |
33 |
0 |
0 |
| ODI |
0 |
4 |
0 |
29 |
189 |
165 |
1 |
0 |
| CDI |
0 |
0 |
0 |
14 |
248 |
759 |
122 |
14 |
| VCDI |
0 |
0 |
0 |
12 |
222 |
4059 |
14282 |
30237 |
|
Date: 2025-01-25:
| 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 |
8002 |
2087 |
36 |
53 |
9 |
0 |
0 |
0 |
| OW |
10 |
180 |
74 |
119 |
20 |
1 |
0 |
0 |
| VODI |
0 |
14 |
19 |
136 |
127 |
34 |
0 |
0 |
| ODI |
0 |
0 |
0 |
29 |
149 |
211 |
6 |
1 |
| CDI |
0 |
0 |
0 |
9 |
127 |
597 |
326 |
18 |
| VCDI |
0 |
0 |
0 |
33 |
168 |
3257 |
15285 |
30094 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8001 |
2071 |
48 |
54 |
6 |
0 |
0 |
0 |
| OW |
10 |
185 |
59 |
115 |
32 |
1 |
0 |
0 |
| VODI |
1 |
25 |
21 |
149 |
125 |
69 |
0 |
0 |
| ODI |
0 |
0 |
1 |
20 |
147 |
177 |
13 |
0 |
| CDI |
0 |
0 |
0 |
9 |
132 |
637 |
311 |
19 |
| VCDI |
0 |
0 |
0 |
32 |
158 |
3216 |
15293 |
30094 |
|
Date: 2025-01-27:
| 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 |
6795 |
2732 |
54 |
70 |
16 |
0 |
0 |
0 |
| OW |
0 |
161 |
69 |
109 |
37 |
1 |
0 |
0 |
| VODI |
0 |
7 |
14 |
224 |
109 |
11 |
0 |
0 |
| ODI |
0 |
0 |
0 |
12 |
223 |
89 |
1 |
9 |
| CDI |
0 |
0 |
0 |
0 |
64 |
860 |
115 |
18 |
| VCDI |
0 |
0 |
0 |
0 |
110 |
3505 |
14840 |
30976 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6795 |
2746 |
57 |
97 |
26 |
0 |
0 |
0 |
| OW |
0 |
135 |
67 |
170 |
78 |
12 |
0 |
0 |
| VODI |
0 |
18 |
12 |
135 |
200 |
90 |
0 |
0 |
| ODI |
0 |
1 |
1 |
11 |
85 |
181 |
1 |
0 |
| CDI |
0 |
0 |
0 |
2 |
46 |
497 |
223 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
124 |
3686 |
14732 |
31000 |
|
Date: 2025-01-29:
| 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 |
6397 |
2802 |
53 |
55 |
7 |
0 |
0 |
0 |
| OW |
0 |
180 |
45 |
120 |
45 |
4 |
0 |
0 |
| VODI |
0 |
35 |
2 |
198 |
139 |
23 |
0 |
0 |
| ODI |
0 |
4 |
1 |
20 |
200 |
133 |
4 |
0 |
| CDI |
0 |
0 |
0 |
0 |
49 |
455 |
123 |
14 |
| VCDI |
0 |
0 |
0 |
0 |
42 |
3072 |
13480 |
33529 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6397 |
2805 |
56 |
69 |
15 |
0 |
0 |
0 |
| OW |
0 |
195 |
30 |
162 |
77 |
13 |
0 |
0 |
| VODI |
0 |
15 |
14 |
118 |
202 |
103 |
0 |
0 |
| ODI |
0 |
6 |
1 |
44 |
76 |
222 |
18 |
0 |
| CDI |
0 |
0 |
0 |
0 |
74 |
279 |
225 |
14 |
| VCDI |
0 |
0 |
0 |
0 |
38 |
3070 |
13364 |
33529 |
|
Date: 2025-01-31:
| 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 |
6884 |
2464 |
23 |
59 |
0 |
0 |
0 |
0 |
| OW |
0 |
291 |
23 |
55 |
38 |
0 |
0 |
0 |
| VODI |
0 |
159 |
55 |
101 |
59 |
5 |
0 |
0 |
| ODI |
0 |
15 |
14 |
125 |
136 |
35 |
1 |
0 |
| CDI |
0 |
2 |
1 |
41 |
259 |
293 |
20 |
3 |
| VCDI |
0 |
1 |
0 |
21 |
320 |
3312 |
10825 |
35591 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6873 |
2018 |
28 |
77 |
12 |
0 |
0 |
0 |
| OW |
11 |
425 |
12 |
49 |
46 |
0 |
0 |
0 |
| VODI |
0 |
301 |
29 |
39 |
56 |
23 |
0 |
0 |
| ODI |
0 |
108 |
22 |
109 |
94 |
60 |
3 |
0 |
| CDI |
0 |
74 |
14 |
65 |
271 |
254 |
101 |
3 |
| VCDI |
0 |
6 |
11 |
63 |
333 |
3308 |
10742 |
35591 |
|
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