Validation of sea ice concentration - American sector
Reference date: 2025-05-29
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
78 |
0 |
1 |
0 |
0 |
| VODI |
0 |
30 |
42 |
299 |
62 |
32 |
0 |
0 |
| ODI |
0 |
113 |
46 |
496 |
723 |
219 |
55 |
0 |
| CDI |
0 |
28 |
26 |
310 |
989 |
2748 |
1143 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
47 |
1300 |
12676 |
24122 |
|
|
Date: 2025-05-25:
| 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 |
176 |
91 |
59 |
0 |
0 |
0 |
0 |
| OW |
0 |
62 |
43 |
43 |
7 |
0 |
0 |
0 |
| VODI |
0 |
110 |
69 |
261 |
97 |
22 |
0 |
0 |
| ODI |
0 |
120 |
40 |
447 |
846 |
252 |
24 |
0 |
| CDI |
0 |
73 |
46 |
317 |
962 |
3998 |
1001 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
39 |
1641 |
15102 |
19918 |
|
|
Date: 2025-05-27:
| 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 |
322 |
95 |
92 |
2 |
0 |
0 |
0 |
| OW |
0 |
83 |
23 |
80 |
24 |
1 |
0 |
0 |
| VODI |
0 |
92 |
61 |
346 |
177 |
44 |
0 |
0 |
| ODI |
0 |
122 |
46 |
454 |
900 |
222 |
6 |
0 |
| CDI |
0 |
60 |
28 |
316 |
1470 |
4606 |
1034 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
163 |
2973 |
17404 |
14612 |
|
|
Date: 2025-05-29:
| 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 |
616 |
130 |
139 |
32 |
0 |
0 |
0 |
| OW |
0 |
101 |
17 |
77 |
110 |
3 |
0 |
0 |
| VODI |
0 |
117 |
43 |
206 |
265 |
29 |
0 |
0 |
| ODI |
0 |
159 |
67 |
533 |
894 |
205 |
10 |
0 |
| CDI |
0 |
20 |
10 |
351 |
2222 |
3970 |
1567 |
8 |
| VCDI |
0 |
0 |
0 |
3 |
144 |
1983 |
17438 |
14397 |
|
|
Date: 2025-05-31:
| 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 |
800 |
131 |
167 |
10 |
0 |
0 |
0 |
| OW |
0 |
80 |
31 |
53 |
119 |
5 |
0 |
0 |
| VODI |
0 |
124 |
28 |
178 |
387 |
27 |
0 |
0 |
| ODI |
0 |
189 |
87 |
663 |
1077 |
224 |
3 |
0 |
| CDI |
0 |
19 |
15 |
306 |
1254 |
3655 |
3120 |
77 |
| VCDI |
0 |
0 |
0 |
0 |
164 |
3858 |
13512 |
15503 |
|
|
Date: 2025-06-02:
| 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 |
862 |
206 |
295 |
6 |
0 |
0 |
0 |
| OW |
0 |
50 |
13 |
178 |
73 |
1 |
0 |
0 |
| VODI |
0 |
131 |
24 |
274 |
572 |
41 |
0 |
0 |
| ODI |
0 |
145 |
79 |
668 |
1057 |
198 |
16 |
0 |
| CDI |
0 |
14 |
13 |
214 |
1853 |
4159 |
2475 |
43 |
| VCDI |
0 |
0 |
0 |
0 |
119 |
2413 |
12763 |
16911 |
|
|
Date: 2025-06-04:
| 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 |
1002 |
187 |
425 |
5 |
0 |
0 |
0 |
| OW |
0 |
57 |
11 |
222 |
95 |
2 |
0 |
0 |
| VODI |
0 |
132 |
55 |
312 |
607 |
105 |
8 |
0 |
| ODI |
0 |
216 |
75 |
679 |
943 |
220 |
41 |
0 |
| CDI |
0 |
29 |
35 |
281 |
1555 |
5791 |
989 |
8 |
| VCDI |
0 |
0 |
0 |
3 |
77 |
2228 |
14705 |
14766 |
|
|
Date: 2025-06-06:
| 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 |
1154 |
158 |
472 |
16 |
0 |
0 |
0 |
| OW |
0 |
48 |
9 |
261 |
115 |
0 |
0 |
0 |
| VODI |
0 |
163 |
67 |
383 |
632 |
126 |
9 |
0 |
| ODI |
0 |
206 |
75 |
563 |
1139 |
436 |
127 |
0 |
| CDI |
0 |
44 |
37 |
234 |
1369 |
4986 |
1620 |
5 |
| VCDI |
0 |
0 |
0 |
5 |
44 |
1171 |
14823 |
15369 |
|
|
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