Validation of sea ice concentration - American sector
Bulletin date: 2025-02-06
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2025-02-02:
| 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 |
7498 |
2097 |
38 |
52 |
3 |
0 |
0 |
0 |
| OW |
0 |
346 |
7 |
60 |
20 |
0 |
0 |
0 |
| VODI |
0 |
257 |
32 |
35 |
47 |
12 |
0 |
0 |
| ODI |
0 |
66 |
42 |
109 |
77 |
52 |
0 |
0 |
| CDI |
0 |
3 |
11 |
72 |
232 |
306 |
4 |
5 |
| VCDI |
0 |
2 |
1 |
21 |
324 |
3780 |
12557 |
33063 |
|
...date precedes bulletin
|
Date: 2025-02-04:
| 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 |
8173 |
2032 |
16 |
18 |
0 |
0 |
0 |
0 |
| OW |
0 |
567 |
45 |
39 |
10 |
0 |
0 |
0 |
| VODI |
0 |
52 |
56 |
173 |
73 |
13 |
2 |
0 |
| ODI |
0 |
8 |
4 |
76 |
137 |
68 |
2 |
0 |
| CDI |
0 |
6 |
2 |
19 |
246 |
432 |
15 |
11 |
| VCDI |
0 |
3 |
1 |
2 |
236 |
3435 |
12255 |
33004 |
|
...date precedes bulletin
|
Date: 2025-02-06:
| 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 |
7617 |
2457 |
46 |
51 |
0 |
0 |
0 |
0 |
| OW |
0 |
343 |
50 |
153 |
39 |
0 |
0 |
0 |
| VODI |
0 |
33 |
26 |
122 |
145 |
7 |
0 |
0 |
| ODI |
0 |
11 |
0 |
13 |
177 |
47 |
0 |
0 |
| CDI |
0 |
2 |
3 |
1 |
180 |
395 |
22 |
12 |
| VCDI |
0 |
2 |
1 |
1 |
42 |
3600 |
10312 |
35321 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7617 |
2559 |
47 |
57 |
0 |
0 |
0 |
0 |
| OW |
0 |
223 |
47 |
152 |
45 |
0 |
0 |
0 |
| VODI |
0 |
51 |
28 |
102 |
149 |
5 |
0 |
0 |
| ODI |
0 |
10 |
0 |
28 |
147 |
54 |
0 |
0 |
| CDI |
0 |
3 |
2 |
1 |
192 |
377 |
23 |
10 |
| VCDI |
0 |
2 |
2 |
1 |
50 |
3613 |
10311 |
35323 |
|
Date: 2025-02-08:
| 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 |
7712 |
2338 |
30 |
76 |
0 |
0 |
0 |
0 |
| OW |
0 |
266 |
33 |
158 |
53 |
0 |
0 |
0 |
| VODI |
0 |
43 |
24 |
98 |
155 |
16 |
0 |
0 |
| ODI |
0 |
6 |
1 |
17 |
181 |
60 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
92 |
221 |
28 |
10 |
| VCDI |
0 |
0 |
0 |
0 |
19 |
2988 |
8181 |
38422 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7712 |
2372 |
49 |
85 |
0 |
0 |
0 |
0 |
| OW |
0 |
201 |
13 |
150 |
49 |
0 |
0 |
0 |
| VODI |
0 |
72 |
25 |
64 |
166 |
22 |
0 |
0 |
| ODI |
0 |
8 |
1 |
47 |
127 |
72 |
0 |
0 |
| CDI |
0 |
0 |
0 |
6 |
118 |
176 |
45 |
15 |
| VCDI |
0 |
0 |
0 |
0 |
40 |
3015 |
8164 |
38417 |
|
Date: 2025-02-10:
| 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 |
8106 |
2238 |
28 |
84 |
4 |
0 |
0 |
0 |
| OW |
0 |
321 |
65 |
108 |
42 |
0 |
0 |
0 |
| VODI |
0 |
16 |
4 |
211 |
167 |
1 |
0 |
0 |
| ODI |
0 |
1 |
1 |
5 |
214 |
41 |
0 |
2 |
| CDI |
0 |
0 |
0 |
0 |
89 |
225 |
36 |
22 |
| VCDI |
0 |
0 |
0 |
0 |
72 |
2065 |
8256 |
38807 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8106 |
2193 |
23 |
56 |
0 |
0 |
0 |
0 |
| OW |
0 |
250 |
30 |
78 |
37 |
0 |
0 |
0 |
| VODI |
0 |
120 |
22 |
143 |
90 |
7 |
0 |
0 |
| ODI |
0 |
13 |
22 |
96 |
135 |
26 |
0 |
3 |
| CDI |
0 |
0 |
1 |
35 |
155 |
113 |
70 |
28 |
| VCDI |
0 |
0 |
0 |
0 |
171 |
2186 |
8222 |
38800 |
|
Date: 2025-02-12:
| 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 |
9203 |
1637 |
25 |
3 |
0 |
0 |
0 |
0 |
| OW |
26 |
376 |
51 |
53 |
2 |
0 |
0 |
0 |
| VODI |
3 |
71 |
69 |
175 |
7 |
19 |
0 |
0 |
| ODI |
0 |
2 |
3 |
93 |
66 |
35 |
0 |
0 |
| CDI |
0 |
0 |
1 |
23 |
183 |
182 |
39 |
58 |
| VCDI |
0 |
0 |
0 |
0 |
383 |
2329 |
7005 |
39109 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9196 |
1561 |
19 |
8 |
1 |
4 |
0 |
0 |
| OW |
26 |
255 |
43 |
28 |
4 |
9 |
0 |
0 |
| VODI |
10 |
190 |
52 |
112 |
22 |
47 |
8 |
0 |
| ODI |
0 |
79 |
23 |
118 |
47 |
67 |
17 |
0 |
| CDI |
0 |
1 |
12 |
62 |
156 |
201 |
95 |
55 |
| VCDI |
0 |
0 |
0 |
19 |
411 |
2237 |
6924 |
39112 |
|
Date: 2025-02-14:
| 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 |
8432 |
2354 |
14 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
237 |
84 |
155 |
1 |
0 |
0 |
0 |
| VODI |
0 |
39 |
20 |
223 |
93 |
0 |
0 |
0 |
| ODI |
0 |
4 |
1 |
67 |
146 |
18 |
0 |
0 |
| CDI |
0 |
2 |
1 |
25 |
214 |
238 |
7 |
26 |
| VCDI |
0 |
0 |
0 |
55 |
170 |
3454 |
10507 |
34642 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8432 |
2311 |
36 |
37 |
31 |
1 |
0 |
0 |
| OW |
0 |
207 |
22 |
88 |
39 |
9 |
0 |
0 |
| VODI |
0 |
105 |
46 |
151 |
66 |
80 |
2 |
0 |
| ODI |
0 |
10 |
15 |
138 |
119 |
128 |
18 |
7 |
| CDI |
0 |
3 |
1 |
44 |
133 |
393 |
94 |
149 |
| VCDI |
0 |
0 |
0 |
69 |
236 |
3099 |
10400 |
34512 |
|
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