Validation of sea ice concentration - American sector
Bulletin date: 2025-02-13
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-02-07:
| 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 |
7502 |
2560 |
40 |
62 |
0 |
0 |
0 |
0 |
| OW |
0 |
263 |
47 |
170 |
61 |
0 |
0 |
0 |
| VODI |
0 |
37 |
22 |
95 |
168 |
8 |
0 |
0 |
| ODI |
0 |
9 |
2 |
5 |
187 |
46 |
0 |
0 |
| CDI |
0 |
2 |
1 |
4 |
133 |
291 |
5 |
6 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
3810 |
10062 |
35631 |
|
...date precedes bulletin
|
Date: 2025-02-09:
| 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 |
7850 |
2304 |
41 |
44 |
1 |
0 |
0 |
0 |
| OW |
0 |
274 |
43 |
118 |
38 |
0 |
0 |
0 |
| VODI |
0 |
52 |
27 |
124 |
140 |
0 |
0 |
0 |
| ODI |
0 |
2 |
0 |
42 |
211 |
27 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
157 |
143 |
14 |
26 |
| VCDI |
0 |
0 |
0 |
0 |
29 |
2814 |
7633 |
39076 |
|
...date precedes bulletin
|
Date: 2025-02-11:
| 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 |
8763 |
1832 |
32 |
41 |
0 |
0 |
0 |
0 |
| OW |
5 |
343 |
61 |
116 |
16 |
0 |
0 |
0 |
| VODI |
1 |
15 |
31 |
235 |
81 |
10 |
0 |
0 |
| ODI |
0 |
0 |
0 |
23 |
161 |
28 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
148 |
140 |
30 |
30 |
| VCDI |
0 |
0 |
0 |
0 |
155 |
1827 |
5307 |
41797 |
|
...date precedes bulletin
|
Date: 2025-02-13:
| 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 |
9638 |
1272 |
7 |
0 |
0 |
0 |
0 |
0 |
| OW |
43 |
367 |
29 |
73 |
0 |
0 |
0 |
0 |
| VODI |
7 |
86 |
68 |
136 |
27 |
4 |
0 |
0 |
| ODI |
0 |
6 |
2 |
100 |
83 |
55 |
0 |
0 |
| CDI |
0 |
1 |
3 |
45 |
263 |
256 |
14 |
62 |
| VCDI |
0 |
0 |
0 |
41 |
292 |
2543 |
9501 |
36207 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9642 |
1270 |
5 |
0 |
0 |
0 |
0 |
0 |
| OW |
38 |
353 |
22 |
66 |
0 |
0 |
0 |
0 |
| VODI |
8 |
104 |
77 |
155 |
23 |
8 |
0 |
0 |
| ODI |
0 |
5 |
3 |
105 |
106 |
56 |
0 |
0 |
| CDI |
0 |
0 |
2 |
29 |
240 |
254 |
24 |
63 |
| VCDI |
0 |
0 |
0 |
40 |
296 |
2540 |
9491 |
36206 |
|
Date: 2025-02-15:
| 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 |
7921 |
2620 |
70 |
32 |
0 |
0 |
0 |
0 |
| OW |
0 |
159 |
71 |
180 |
24 |
0 |
0 |
0 |
| VODI |
0 |
15 |
13 |
182 |
150 |
0 |
0 |
0 |
| ODI |
0 |
1 |
0 |
42 |
191 |
14 |
0 |
0 |
| CDI |
0 |
0 |
0 |
12 |
191 |
145 |
27 |
26 |
| VCDI |
0 |
0 |
0 |
19 |
287 |
4087 |
10258 |
34494 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7921 |
2626 |
60 |
22 |
0 |
0 |
0 |
0 |
| OW |
0 |
142 |
76 |
190 |
8 |
0 |
0 |
0 |
| VODI |
0 |
26 |
18 |
198 |
131 |
0 |
0 |
0 |
| ODI |
0 |
1 |
0 |
30 |
260 |
9 |
0 |
0 |
| CDI |
0 |
0 |
0 |
11 |
189 |
173 |
18 |
22 |
| VCDI |
0 |
0 |
0 |
16 |
255 |
4064 |
10267 |
34498 |
|
Date: 2025-02-17:
| 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 |
7384 |
2813 |
54 |
46 |
4 |
0 |
0 |
0 |
| OW |
0 |
97 |
107 |
130 |
5 |
0 |
0 |
0 |
| VODI |
0 |
6 |
4 |
308 |
110 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
19 |
389 |
18 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
257 |
267 |
38 |
31 |
| VCDI |
0 |
0 |
0 |
0 |
143 |
3864 |
10690 |
34447 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7384 |
2758 |
67 |
62 |
6 |
0 |
0 |
0 |
| OW |
0 |
144 |
72 |
185 |
10 |
0 |
0 |
0 |
| VODI |
0 |
14 |
26 |
215 |
157 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
40 |
247 |
7 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
262 |
170 |
47 |
43 |
| VCDI |
0 |
0 |
0 |
0 |
226 |
3972 |
10681 |
34435 |
|
Date: 2025-02-19:
| 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 |
6948 |
2697 |
71 |
64 |
0 |
0 |
0 |
0 |
| OW |
0 |
139 |
72 |
213 |
26 |
0 |
0 |
0 |
| VODI |
0 |
29 |
9 |
181 |
263 |
5 |
0 |
0 |
| ODI |
0 |
1 |
0 |
18 |
203 |
101 |
0 |
0 |
| CDI |
0 |
0 |
0 |
5 |
212 |
307 |
78 |
16 |
| VCDI |
0 |
0 |
0 |
0 |
425 |
3969 |
7064 |
38115 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6948 |
2739 |
72 |
78 |
0 |
0 |
0 |
0 |
| OW |
0 |
103 |
79 |
201 |
64 |
0 |
0 |
0 |
| VODI |
0 |
24 |
1 |
179 |
243 |
35 |
0 |
0 |
| ODI |
0 |
0 |
0 |
20 |
171 |
127 |
1 |
0 |
| CDI |
0 |
0 |
0 |
3 |
158 |
261 |
56 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
493 |
3959 |
7085 |
38123 |
|
Date: 2025-02-21:
| 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 |
6821 |
2635 |
28 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
181 |
115 |
251 |
7 |
0 |
0 |
0 |
| VODI |
0 |
25 |
11 |
222 |
244 |
10 |
0 |
0 |
| ODI |
0 |
1 |
0 |
13 |
236 |
95 |
1 |
0 |
| CDI |
0 |
0 |
0 |
1 |
214 |
315 |
64 |
15 |
| VCDI |
0 |
0 |
0 |
0 |
397 |
3985 |
8997 |
36341 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6821 |
2550 |
29 |
8 |
0 |
0 |
0 |
0 |
| OW |
0 |
206 |
94 |
214 |
6 |
0 |
0 |
0 |
| VODI |
0 |
86 |
31 |
234 |
154 |
6 |
0 |
0 |
| ODI |
0 |
0 |
0 |
34 |
283 |
54 |
4 |
0 |
| CDI |
0 |
0 |
0 |
3 |
204 |
273 |
62 |
12 |
| VCDI |
0 |
0 |
0 |
0 |
451 |
4072 |
8996 |
36344 |
|
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