Validation of sea ice concentration - American sector
Bulletin date: 2025-02-27
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2025-02-23:
| 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 |
6745 |
2555 |
20 |
39 |
4 |
0 |
0 |
0 |
| OW |
0 |
266 |
102 |
139 |
22 |
0 |
0 |
0 |
| VODI |
0 |
39 |
18 |
267 |
134 |
10 |
0 |
0 |
| ODI |
0 |
0 |
0 |
13 |
241 |
103 |
6 |
0 |
| CDI |
0 |
0 |
0 |
0 |
154 |
414 |
28 |
6 |
| VCDI |
0 |
0 |
0 |
0 |
140 |
3907 |
8665 |
37194 |
|
...date precedes bulletin
|
Date: 2025-02-25:
| 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 |
6638 |
2689 |
29 |
40 |
10 |
0 |
0 |
0 |
| OW |
0 |
129 |
105 |
161 |
20 |
0 |
0 |
0 |
| VODI |
0 |
5 |
6 |
255 |
214 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
1 |
193 |
150 |
6 |
0 |
| CDI |
0 |
0 |
0 |
0 |
101 |
544 |
72 |
12 |
| VCDI |
0 |
0 |
0 |
0 |
103 |
2901 |
7300 |
39546 |
|
...date precedes bulletin
|
Date: 2025-02-27:
| 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 |
6493 |
2708 |
46 |
50 |
9 |
0 |
0 |
0 |
| OW |
0 |
114 |
88 |
251 |
21 |
0 |
0 |
0 |
| VODI |
0 |
4 |
9 |
170 |
253 |
6 |
0 |
0 |
| ODI |
0 |
0 |
0 |
6 |
173 |
176 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
78 |
538 |
50 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
92 |
2768 |
8582 |
38538 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6493 |
2732 |
44 |
53 |
8 |
0 |
0 |
0 |
| OW |
0 |
92 |
91 |
266 |
22 |
0 |
0 |
0 |
| VODI |
0 |
2 |
8 |
157 |
269 |
13 |
0 |
0 |
| ODI |
0 |
0 |
0 |
1 |
155 |
197 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
78 |
493 |
65 |
11 |
| VCDI |
0 |
0 |
0 |
0 |
94 |
2785 |
8567 |
38535 |
|
Date: 2025-03-01:
| 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 |
6352 |
2744 |
49 |
54 |
10 |
0 |
0 |
0 |
| OW |
0 |
134 |
77 |
238 |
31 |
0 |
0 |
0 |
| VODI |
0 |
11 |
8 |
144 |
264 |
16 |
0 |
0 |
| ODI |
0 |
0 |
0 |
6 |
127 |
190 |
14 |
0 |
| CDI |
0 |
0 |
0 |
0 |
66 |
349 |
249 |
13 |
| VCDI |
0 |
0 |
0 |
0 |
184 |
2644 |
10446 |
36811 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6352 |
2786 |
42 |
64 |
12 |
0 |
0 |
0 |
| OW |
0 |
98 |
82 |
238 |
39 |
0 |
0 |
0 |
| VODI |
0 |
5 |
10 |
137 |
260 |
33 |
0 |
0 |
| ODI |
0 |
0 |
0 |
3 |
121 |
191 |
28 |
0 |
| CDI |
0 |
0 |
0 |
0 |
67 |
326 |
244 |
18 |
| VCDI |
0 |
0 |
0 |
0 |
183 |
2649 |
10437 |
36806 |
|
Date: 2025-03-03:
| 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 |
6239 |
2783 |
35 |
63 |
2 |
0 |
0 |
0 |
| OW |
0 |
143 |
90 |
126 |
34 |
0 |
0 |
0 |
| VODI |
0 |
2 |
6 |
220 |
178 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
14 |
234 |
55 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
60 |
526 |
7 |
7 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
3201 |
8529 |
38654 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6239 |
2825 |
58 |
100 |
18 |
0 |
0 |
0 |
| OW |
0 |
102 |
65 |
184 |
99 |
0 |
0 |
0 |
| VODI |
0 |
1 |
8 |
126 |
231 |
65 |
6 |
0 |
| ODI |
0 |
0 |
0 |
13 |
104 |
162 |
37 |
0 |
| CDI |
0 |
0 |
0 |
0 |
40 |
363 |
78 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
37 |
3194 |
8415 |
38657 |
|
Date: 2025-03-05:
| 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 |
6115 |
2674 |
38 |
67 |
6 |
0 |
0 |
0 |
| OW |
0 |
213 |
84 |
157 |
41 |
0 |
0 |
0 |
| VODI |
0 |
1 |
14 |
177 |
154 |
3 |
0 |
0 |
| ODI |
0 |
0 |
0 |
36 |
222 |
22 |
0 |
1 |
| CDI |
0 |
0 |
0 |
3 |
192 |
434 |
21 |
27 |
| VCDI |
0 |
0 |
0 |
8 |
92 |
3556 |
8863 |
38010 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6115 |
2722 |
61 |
112 |
26 |
0 |
0 |
0 |
| OW |
0 |
143 |
53 |
154 |
98 |
1 |
0 |
0 |
| VODI |
0 |
23 |
19 |
116 |
173 |
86 |
0 |
0 |
| ODI |
0 |
0 |
3 |
47 |
169 |
142 |
29 |
0 |
| CDI |
0 |
0 |
0 |
10 |
134 |
360 |
101 |
3 |
| VCDI |
0 |
0 |
0 |
9 |
107 |
3426 |
8754 |
38035 |
|
Date: 2025-03-07:
| 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 |
5967 |
2494 |
24 |
46 |
4 |
0 |
0 |
0 |
| OW |
0 |
382 |
101 |
209 |
26 |
0 |
0 |
0 |
| VODI |
0 |
1 |
9 |
255 |
153 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
50 |
258 |
66 |
2 |
0 |
| CDI |
0 |
0 |
0 |
4 |
183 |
434 |
90 |
52 |
| VCDI |
0 |
0 |
0 |
10 |
210 |
3632 |
12004 |
34564 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
5967 |
2600 |
40 |
89 |
4 |
0 |
0 |
0 |
| OW |
0 |
203 |
54 |
195 |
69 |
0 |
0 |
0 |
| VODI |
0 |
67 |
25 |
154 |
180 |
28 |
0 |
0 |
| ODI |
0 |
7 |
15 |
91 |
192 |
126 |
18 |
0 |
| CDI |
0 |
0 |
0 |
33 |
139 |
425 |
114 |
27 |
| VCDI |
0 |
0 |
0 |
12 |
250 |
3554 |
11964 |
34589 |
|
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