Validation of sea ice concentration - American sector
Reference date: 2025-07-24
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-07-18:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8244 |
5065 |
201 |
280 |
22 |
0 |
0 |
0 |
| OW |
2 |
585 |
189 |
619 |
94 |
9 |
0 |
0 |
| VODI |
0 |
30 |
18 |
793 |
3110 |
203 |
1 |
0 |
| ODI |
0 |
2 |
0 |
9 |
4006 |
2455 |
12 |
0 |
| CDI |
0 |
0 |
1 |
6 |
2072 |
14831 |
2205 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
212 |
570 |
0 |
|
|
Date: 2025-07-20:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8433 |
5405 |
228 |
264 |
17 |
0 |
0 |
0 |
| OW |
0 |
529 |
216 |
707 |
172 |
11 |
0 |
0 |
| VODI |
0 |
45 |
44 |
850 |
2385 |
339 |
0 |
0 |
| ODI |
0 |
6 |
2 |
14 |
2924 |
3741 |
123 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1639 |
14162 |
2468 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
451 |
670 |
0 |
|
|
Date: 2025-07-22:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10250 |
4069 |
290 |
256 |
14 |
0 |
0 |
0 |
| OW |
0 |
542 |
217 |
686 |
169 |
5 |
0 |
0 |
| VODI |
0 |
48 |
40 |
1188 |
2377 |
191 |
1 |
0 |
| ODI |
0 |
0 |
0 |
34 |
5109 |
1712 |
32 |
0 |
| CDI |
0 |
0 |
0 |
2 |
1710 |
14579 |
1164 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
987 |
174 |
0 |
|
|
Date: 2025-07-24:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10307 |
4318 |
303 |
272 |
11 |
0 |
0 |
0 |
| OW |
0 |
481 |
227 |
743 |
185 |
0 |
0 |
0 |
| VODI |
0 |
37 |
56 |
1528 |
2289 |
571 |
4 |
0 |
| ODI |
0 |
0 |
0 |
68 |
3468 |
3536 |
4 |
0 |
| CDI |
0 |
0 |
0 |
2 |
2635 |
13119 |
874 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
409 |
399 |
0 |
|
|
Date: 2025-07-26:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10390 |
4653 |
305 |
294 |
11 |
0 |
0 |
0 |
| OW |
0 |
439 |
251 |
845 |
146 |
1 |
0 |
0 |
| VODI |
0 |
56 |
47 |
1430 |
2983 |
255 |
0 |
0 |
| ODI |
0 |
0 |
2 |
76 |
5520 |
1680 |
10 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1981 |
12715 |
1434 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
85 |
237 |
0 |
|
|
Date: 2025-07-28:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10570 |
5029 |
324 |
276 |
23 |
0 |
0 |
0 |
| OW |
0 |
487 |
309 |
814 |
127 |
2 |
0 |
0 |
| VODI |
0 |
52 |
66 |
1517 |
2989 |
278 |
7 |
0 |
| ODI |
0 |
0 |
0 |
172 |
5042 |
2978 |
135 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1659 |
10634 |
1764 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
44 |
548 |
0 |
|
|
Date: 2025-07-30:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10686 |
5153 |
298 |
331 |
30 |
0 |
0 |
0 |
| OW |
1 |
424 |
251 |
933 |
94 |
1 |
0 |
0 |
| VODI |
0 |
34 |
77 |
1896 |
3241 |
357 |
3 |
0 |
| ODI |
0 |
0 |
0 |
224 |
5043 |
5018 |
33 |
0 |
| CDI |
0 |
0 |
0 |
0 |
278 |
9613 |
190 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1451 |
186 |
0 |
|
|
Date: 2025-08-01:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10948 |
5045 |
296 |
367 |
53 |
0 |
0 |
0 |
| OW |
0 |
544 |
420 |
1203 |
103 |
0 |
0 |
0 |
| VODI |
0 |
60 |
117 |
2307 |
3392 |
436 |
0 |
0 |
| ODI |
0 |
0 |
0 |
187 |
3877 |
4465 |
88 |
0 |
| CDI |
0 |
0 |
0 |
0 |
270 |
6784 |
3855 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
156 |
873 |
0 |
|
|
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