Validation of sea ice concentration - American sector
Reference date: 2025-05-08
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-05-02:
| 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 |
14 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
27 |
0 |
0 |
0 |
0 |
| VODI |
0 |
7 |
3 |
36 |
7 |
2 |
0 |
0 |
| ODI |
0 |
16 |
2 |
61 |
92 |
17 |
4 |
0 |
| CDI |
0 |
0 |
0 |
46 |
655 |
897 |
197 |
13 |
| VCDI |
0 |
0 |
0 |
0 |
149 |
1636 |
13676 |
28309 |
|
|
Date: 2025-05-04:
| 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 |
0 |
11 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
3 |
7 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
43 |
53 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
8 |
213 |
26 |
3 |
0 |
| CDI |
0 |
0 |
0 |
2 |
485 |
1650 |
274 |
19 |
| VCDI |
0 |
0 |
0 |
0 |
74 |
923 |
12488 |
29582 |
|
|
Date: 2025-05-06:
| 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 |
1 |
7 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
3 |
12 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
52 |
68 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
28 |
311 |
61 |
4 |
0 |
| CDI |
0 |
0 |
0 |
3 |
391 |
1820 |
374 |
43 |
| VCDI |
0 |
0 |
0 |
0 |
55 |
492 |
10694 |
31445 |
|
|
Date: 2025-05-08:
| 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 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
1 |
13 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
32 |
85 |
1 |
0 |
0 |
| ODI |
0 |
2 |
0 |
46 |
294 |
15 |
3 |
0 |
| CDI |
0 |
17 |
7 |
57 |
877 |
1764 |
265 |
14 |
| VCDI |
0 |
0 |
0 |
0 |
146 |
1408 |
13535 |
27284 |
|
|
Date: 2025-05-10:
| 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 |
13 |
3 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
1 |
4 |
1 |
0 |
0 |
0 |
| VODI |
0 |
5 |
2 |
48 |
61 |
1 |
0 |
0 |
| ODI |
0 |
23 |
7 |
142 |
428 |
49 |
11 |
0 |
| CDI |
0 |
11 |
17 |
220 |
855 |
1537 |
548 |
33 |
| VCDI |
0 |
0 |
0 |
1 |
38 |
1126 |
12846 |
27825 |
|
|
Date: 2025-05-12:
| 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 |
3 |
5 |
17 |
0 |
0 |
0 |
0 |
| OW |
0 |
1 |
2 |
10 |
0 |
0 |
0 |
0 |
| VODI |
0 |
8 |
0 |
52 |
29 |
3 |
0 |
0 |
| ODI |
0 |
73 |
29 |
238 |
512 |
102 |
7 |
0 |
| CDI |
0 |
11 |
4 |
167 |
1009 |
2088 |
947 |
53 |
| VCDI |
0 |
0 |
0 |
0 |
27 |
1146 |
14114 |
25209 |
|
|
Date: 2025-05-14:
| 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 |
19 |
18 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
1 |
3 |
7 |
0 |
0 |
0 |
0 |
| VODI |
0 |
5 |
0 |
31 |
139 |
3 |
0 |
0 |
| ODI |
0 |
133 |
38 |
163 |
662 |
176 |
3 |
3 |
| CDI |
0 |
1 |
1 |
106 |
817 |
2385 |
1921 |
214 |
| VCDI |
0 |
0 |
0 |
0 |
18 |
5704 |
26060 |
7229 |
|
|
Date: 2025-05-16:
| 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 |
43 |
1 |
3 |
0 |
0 |
0 |
0 |
| OW |
0 |
6 |
3 |
12 |
2 |
0 |
0 |
0 |
| VODI |
0 |
33 |
17 |
128 |
93 |
13 |
0 |
0 |
| ODI |
0 |
134 |
60 |
346 |
622 |
80 |
21 |
0 |
| CDI |
0 |
140 |
17 |
221 |
1169 |
2089 |
1939 |
41 |
| VCDI |
0 |
0 |
0 |
1 |
64 |
1513 |
16250 |
20805 |
|
|
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