Validation of sea ice concentration - American sector
Bulletin date: 2024-04-25
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-04-19:
| 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 |
4863 |
2614 |
14 |
18 |
0 |
0 |
0 |
0 |
| OW |
31 |
569 |
93 |
330 |
38 |
0 |
0 |
0 |
| VODI |
0 |
33 |
1 |
241 |
554 |
24 |
0 |
0 |
| ODI |
0 |
4 |
1 |
51 |
241 |
444 |
17 |
0 |
| CDI |
0 |
6 |
4 |
99 |
322 |
762 |
857 |
1 |
| VCDI |
0 |
4 |
12 |
165 |
817 |
3509 |
12462 |
32030 |
|
...date precedes bulletin
|
Date: 2024-04-21:
| 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 |
4978 |
2442 |
23 |
27 |
6 |
0 |
0 |
0 |
| OW |
23 |
663 |
116 |
202 |
58 |
0 |
0 |
0 |
| VODI |
0 |
25 |
28 |
444 |
401 |
54 |
0 |
0 |
| ODI |
0 |
1 |
0 |
42 |
525 |
147 |
73 |
0 |
| CDI |
0 |
0 |
0 |
66 |
409 |
761 |
490 |
1 |
| VCDI |
0 |
0 |
0 |
57 |
829 |
4321 |
12066 |
31953 |
|
...date precedes bulletin
|
Date: 2024-04-23:
| 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 |
5361 |
2499 |
19 |
18 |
0 |
0 |
0 |
0 |
| OW |
5 |
534 |
96 |
102 |
17 |
7 |
0 |
0 |
| VODI |
0 |
10 |
31 |
483 |
221 |
26 |
0 |
0 |
| ODI |
0 |
0 |
0 |
31 |
630 |
131 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
429 |
1817 |
114 |
20 |
| VCDI |
0 |
0 |
0 |
0 |
368 |
3150 |
10434 |
34677 |
|
...date precedes bulletin
|
Date: 2024-04-25:
| 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 |
6037 |
2114 |
22 |
18 |
0 |
0 |
0 |
0 |
| OW |
0 |
591 |
75 |
65 |
30 |
1 |
0 |
0 |
| VODI |
0 |
132 |
87 |
379 |
208 |
16 |
0 |
0 |
| ODI |
0 |
2 |
4 |
197 |
306 |
114 |
9 |
1 |
| CDI |
0 |
1 |
1 |
75 |
620 |
1209 |
208 |
30 |
| VCDI |
0 |
0 |
1 |
65 |
560 |
3224 |
14609 |
30220 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6037 |
2141 |
24 |
28 |
0 |
0 |
0 |
0 |
| OW |
0 |
536 |
70 |
75 |
41 |
1 |
0 |
0 |
| VODI |
0 |
158 |
83 |
302 |
205 |
24 |
0 |
0 |
| ODI |
0 |
3 |
11 |
239 |
318 |
101 |
10 |
2 |
| CDI |
0 |
2 |
1 |
88 |
623 |
1225 |
213 |
32 |
| VCDI |
0 |
0 |
1 |
67 |
537 |
3213 |
14603 |
30217 |
|
Date: 2024-04-27:
| 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 |
6212 |
1933 |
13 |
17 |
0 |
0 |
0 |
0 |
| OW |
4 |
659 |
41 |
81 |
25 |
0 |
0 |
0 |
| VODI |
0 |
224 |
102 |
353 |
197 |
6 |
0 |
0 |
| ODI |
0 |
12 |
10 |
225 |
267 |
115 |
12 |
3 |
| CDI |
0 |
3 |
0 |
64 |
937 |
1354 |
233 |
62 |
| VCDI |
0 |
5 |
1 |
62 |
811 |
4776 |
14107 |
28305 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6213 |
1961 |
16 |
30 |
0 |
0 |
0 |
0 |
| OW |
3 |
591 |
49 |
90 |
38 |
0 |
0 |
0 |
| VODI |
0 |
253 |
82 |
251 |
183 |
10 |
0 |
0 |
| ODI |
0 |
17 |
16 |
316 |
313 |
111 |
14 |
3 |
| CDI |
0 |
9 |
3 |
56 |
969 |
1449 |
244 |
64 |
| VCDI |
0 |
5 |
1 |
59 |
734 |
4681 |
14094 |
28303 |
|
Date: 2024-04-29:
| 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 |
6144 |
2143 |
11 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
799 |
157 |
92 |
5 |
0 |
0 |
0 |
| VODI |
0 |
9 |
31 |
570 |
154 |
3 |
0 |
0 |
| ODI |
0 |
0 |
1 |
106 |
618 |
94 |
22 |
2 |
| CDI |
0 |
0 |
0 |
47 |
865 |
1758 |
369 |
32 |
| VCDI |
0 |
0 |
0 |
25 |
358 |
3266 |
14670 |
28878 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6144 |
1934 |
11 |
15 |
0 |
0 |
0 |
0 |
| OW |
0 |
637 |
71 |
91 |
18 |
0 |
0 |
0 |
| VODI |
0 |
337 |
78 |
271 |
209 |
23 |
0 |
0 |
| ODI |
0 |
35 |
37 |
276 |
297 |
192 |
30 |
1 |
| CDI |
0 |
7 |
2 |
106 |
830 |
1526 |
694 |
34 |
| VCDI |
0 |
1 |
1 |
83 |
646 |
3380 |
14337 |
28877 |
|
Date: 2024-05-01:
| 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 |
6478 |
1864 |
11 |
4 |
1 |
0 |
0 |
0 |
| OW |
1 |
996 |
84 |
91 |
11 |
0 |
0 |
1 |
| VODI |
0 |
69 |
103 |
393 |
148 |
13 |
29 |
9 |
| ODI |
0 |
5 |
1 |
140 |
470 |
159 |
47 |
10 |
| CDI |
0 |
7 |
7 |
138 |
968 |
1607 |
512 |
45 |
| VCDI |
0 |
0 |
0 |
53 |
697 |
3183 |
13395 |
29481 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6479 |
1716 |
15 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
677 |
52 |
83 |
12 |
0 |
0 |
0 |
| VODI |
0 |
464 |
76 |
196 |
192 |
38 |
12 |
7 |
| ODI |
0 |
68 |
50 |
215 |
310 |
197 |
35 |
14 |
| CDI |
0 |
12 |
5 |
156 |
944 |
1426 |
645 |
58 |
| VCDI |
0 |
4 |
8 |
159 |
837 |
3301 |
13291 |
29467 |
|
Date: 2024-05-03:
| 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 |
7045 |
1385 |
15 |
23 |
4 |
0 |
0 |
0 |
| OW |
41 |
922 |
65 |
131 |
52 |
0 |
3 |
0 |
| VODI |
0 |
137 |
112 |
387 |
199 |
27 |
23 |
0 |
| ODI |
0 |
13 |
14 |
213 |
446 |
112 |
33 |
0 |
| CDI |
0 |
36 |
18 |
199 |
1446 |
1161 |
361 |
6 |
| VCDI |
0 |
10 |
16 |
200 |
1102 |
3370 |
13792 |
28112 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6981 |
1320 |
12 |
33 |
15 |
0 |
0 |
0 |
| OW |
105 |
585 |
42 |
109 |
66 |
0 |
1 |
0 |
| VODI |
0 |
420 |
69 |
247 |
246 |
26 |
5 |
0 |
| ODI |
0 |
112 |
70 |
231 |
394 |
169 |
22 |
5 |
| CDI |
0 |
35 |
9 |
280 |
1244 |
1127 |
388 |
108 |
| VCDI |
0 |
31 |
38 |
253 |
1284 |
3348 |
13796 |
28005 |
|
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