Validation of sea ice concentration - American sector
Reference date: 2025-05-15
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-05-09:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
8 |
3 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
8 |
5 |
0 |
0 |
0 |
| VODI |
0 |
1 |
0 |
21 |
92 |
5 |
0 |
0 |
| ODI |
0 |
13 |
1 |
60 |
370 |
27 |
2 |
0 |
| CDI |
0 |
38 |
20 |
155 |
893 |
1787 |
210 |
6 |
| VCDI |
0 |
1 |
0 |
58 |
542 |
1618 |
9751 |
30171 |
|
|
Date: 2025-05-11:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
9 |
7 |
8 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
1 |
2 |
0 |
0 |
0 |
0 |
| VODI |
0 |
12 |
6 |
64 |
27 |
1 |
0 |
0 |
| ODI |
0 |
50 |
26 |
256 |
406 |
34 |
7 |
0 |
| CDI |
0 |
10 |
18 |
178 |
963 |
1982 |
470 |
21 |
| VCDI |
0 |
0 |
0 |
0 |
33 |
1730 |
12410 |
27135 |
|
|
Date: 2025-05-13:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
7 |
7 |
27 |
0 |
0 |
0 |
0 |
| OW |
0 |
2 |
1 |
9 |
0 |
0 |
0 |
0 |
| VODI |
0 |
4 |
0 |
22 |
69 |
5 |
1 |
0 |
| ODI |
0 |
101 |
30 |
164 |
660 |
139 |
1 |
0 |
| CDI |
0 |
4 |
12 |
231 |
1478 |
2617 |
568 |
27 |
| VCDI |
0 |
0 |
0 |
17 |
159 |
2024 |
16723 |
20757 |
|
|
Date: 2025-05-15:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
24 |
20 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
1 |
4 |
7 |
0 |
0 |
0 |
0 |
| VODI |
0 |
12 |
7 |
78 |
90 |
0 |
0 |
0 |
| ODI |
0 |
123 |
46 |
298 |
719 |
81 |
23 |
8 |
| CDI |
0 |
0 |
2 |
94 |
903 |
1943 |
2411 |
241 |
| VCDI |
0 |
0 |
0 |
0 |
26 |
1610 |
18342 |
18751 |
|
|
Date: 2025-05-17:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
39 |
3 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
6 |
4 |
22 |
8 |
0 |
0 |
0 |
| VODI |
0 |
39 |
18 |
171 |
124 |
14 |
0 |
0 |
| ODI |
0 |
139 |
56 |
349 |
627 |
124 |
17 |
0 |
| CDI |
0 |
11 |
9 |
124 |
1139 |
1982 |
1783 |
217 |
| VCDI |
0 |
4 |
1 |
2 |
134 |
1459 |
15810 |
21421 |
|
|
Date: 2025-05-19:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
31 |
16 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
16 |
20 |
46 |
1 |
0 |
0 |
0 |
| VODI |
0 |
26 |
43 |
211 |
125 |
3 |
0 |
0 |
| ODI |
0 |
115 |
47 |
379 |
671 |
248 |
34 |
0 |
| CDI |
0 |
0 |
2 |
168 |
802 |
2129 |
1083 |
45 |
| VCDI |
0 |
0 |
0 |
0 |
38 |
1332 |
16858 |
21368 |
|
|
Date: 2025-05-21:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
65 |
25 |
42 |
0 |
0 |
0 |
0 |
| OW |
0 |
39 |
40 |
32 |
2 |
1 |
0 |
0 |
| VODI |
0 |
25 |
34 |
263 |
89 |
33 |
0 |
0 |
| ODI |
0 |
117 |
26 |
440 |
580 |
272 |
79 |
0 |
| CDI |
0 |
24 |
17 |
241 |
968 |
2650 |
985 |
52 |
| VCDI |
0 |
0 |
0 |
0 |
45 |
954 |
11646 |
26080 |
|
|
Date: 2025-05-23:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
105 |
49 |
47 |
0 |
0 |
0 |
0 |
| OW |
0 |
43 |
34 |
77 |
0 |
1 |
0 |
0 |
| VODI |
0 |
30 |
42 |
299 |
62 |
32 |
0 |
0 |
| ODI |
0 |
113 |
46 |
496 |
725 |
219 |
55 |
0 |
| CDI |
0 |
28 |
26 |
311 |
986 |
2749 |
1142 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
48 |
1299 |
12677 |
24121 |
|
|
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