Validation of sea ice concentration - American sector
Bulletin date: 2023-05-11
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-05-05:
| 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 |
0 |
0 |
0 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
28 |
8 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
55 |
55 |
17 |
12 |
0 |
| ODI |
0 |
0 |
0 |
75 |
155 |
108 |
21 |
0 |
| CDI |
0 |
0 |
0 |
90 |
602 |
795 |
378 |
1 |
| VCDI |
0 |
0 |
0 |
82 |
533 |
2741 |
12424 |
27677 |
|
...date precedes bulletin
|
Date: 2023-05-07:
| 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 |
0 |
0 |
0 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
44 |
8 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
74 |
73 |
25 |
5 |
0 |
| ODI |
0 |
0 |
0 |
92 |
142 |
207 |
53 |
0 |
| CDI |
0 |
0 |
0 |
122 |
407 |
611 |
568 |
12 |
| VCDI |
0 |
0 |
11 |
175 |
917 |
2491 |
13381 |
26442 |
|
...date precedes bulletin
|
Date: 2023-05-09:
| 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 |
0 |
0 |
0 |
49 |
4 |
0 |
0 |
0 |
| OW |
0 |
0 |
3 |
83 |
23 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
136 |
123 |
5 |
1 |
0 |
| ODI |
0 |
0 |
0 |
92 |
254 |
112 |
10 |
0 |
| CDI |
0 |
0 |
0 |
191 |
553 |
947 |
250 |
15 |
| VCDI |
0 |
0 |
0 |
146 |
872 |
2913 |
14981 |
24103 |
|
...date precedes bulletin
|
Date: 2023-05-11:
| 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 |
0 |
0 |
0 |
59 |
12 |
0 |
0 |
0 |
| OW |
0 |
1 |
9 |
45 |
55 |
0 |
0 |
0 |
| VODI |
0 |
2 |
9 |
89 |
172 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
87 |
305 |
116 |
6 |
0 |
| CDI |
0 |
0 |
3 |
142 |
688 |
1113 |
370 |
8 |
| VCDI |
0 |
0 |
0 |
206 |
605 |
4249 |
12972 |
24539 |
|
|
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 |
62 |
15 |
0 |
0 |
0 |
| OW |
0 |
1 |
7 |
41 |
77 |
0 |
0 |
0 |
| VODI |
0 |
2 |
11 |
84 |
181 |
10 |
1 |
0 |
| ODI |
0 |
0 |
0 |
89 |
275 |
107 |
7 |
0 |
| CDI |
0 |
0 |
3 |
159 |
709 |
1139 |
433 |
23 |
| VCDI |
0 |
0 |
0 |
193 |
580 |
4226 |
12907 |
24524 |
|
Date: 2023-05-13:
| 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 |
0 |
14 |
8 |
58 |
6 |
0 |
0 |
0 |
| OW |
0 |
16 |
12 |
96 |
44 |
0 |
0 |
0 |
| VODI |
0 |
24 |
28 |
114 |
216 |
15 |
0 |
0 |
| ODI |
0 |
0 |
13 |
129 |
342 |
161 |
15 |
0 |
| CDI |
0 |
0 |
6 |
155 |
660 |
905 |
455 |
7 |
| VCDI |
0 |
14 |
22 |
252 |
739 |
3624 |
12759 |
24957 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
16 |
7 |
72 |
10 |
0 |
0 |
0 |
| OW |
0 |
10 |
7 |
82 |
53 |
0 |
0 |
0 |
| VODI |
0 |
25 |
27 |
106 |
193 |
19 |
0 |
0 |
| ODI |
0 |
3 |
21 |
142 |
344 |
176 |
17 |
0 |
| CDI |
0 |
0 |
5 |
167 |
680 |
844 |
469 |
7 |
| VCDI |
0 |
14 |
22 |
235 |
727 |
3666 |
12743 |
24957 |
|
Date: 2023-05-15:
| 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 |
0 |
65 |
36 |
79 |
1 |
0 |
0 |
0 |
| OW |
0 |
11 |
29 |
174 |
44 |
0 |
0 |
0 |
| VODI |
0 |
36 |
33 |
293 |
273 |
15 |
1 |
0 |
| ODI |
0 |
12 |
31 |
213 |
599 |
219 |
20 |
0 |
| CDI |
0 |
0 |
0 |
140 |
680 |
1811 |
391 |
21 |
| VCDI |
0 |
0 |
0 |
39 |
276 |
4692 |
17858 |
17774 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1 |
8 |
91 |
20 |
0 |
0 |
0 |
| OW |
0 |
18 |
12 |
105 |
44 |
6 |
0 |
0 |
| VODI |
0 |
30 |
28 |
145 |
222 |
109 |
5 |
0 |
| ODI |
0 |
25 |
18 |
145 |
286 |
327 |
67 |
0 |
| CDI |
0 |
17 |
23 |
207 |
555 |
947 |
800 |
16 |
| VCDI |
0 |
33 |
40 |
245 |
746 |
5348 |
17398 |
17779 |
|
Date: 2023-05-17:
| 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 |
0 |
151 |
69 |
87 |
0 |
0 |
0 |
0 |
| OW |
0 |
64 |
33 |
238 |
33 |
2 |
0 |
0 |
| VODI |
0 |
72 |
64 |
302 |
265 |
37 |
3 |
0 |
| ODI |
0 |
11 |
18 |
291 |
366 |
204 |
22 |
0 |
| CDI |
0 |
0 |
0 |
173 |
609 |
1414 |
269 |
1 |
| VCDI |
0 |
0 |
0 |
61 |
431 |
3405 |
15888 |
21283 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
63 |
39 |
61 |
3 |
5 |
0 |
0 |
| OW |
0 |
53 |
21 |
129 |
25 |
9 |
0 |
0 |
| VODI |
0 |
68 |
31 |
191 |
202 |
83 |
19 |
0 |
| ODI |
0 |
46 |
31 |
205 |
306 |
291 |
71 |
0 |
| CDI |
0 |
31 |
16 |
330 |
558 |
1079 |
460 |
23 |
| VCDI |
0 |
37 |
46 |
236 |
610 |
3595 |
15632 |
21261 |
|
Date: 2023-05-19:
| 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 |
0 |
142 |
58 |
62 |
3 |
0 |
0 |
0 |
| OW |
0 |
83 |
60 |
250 |
80 |
0 |
0 |
0 |
| VODI |
0 |
73 |
72 |
387 |
325 |
67 |
3 |
0 |
| ODI |
0 |
7 |
22 |
269 |
418 |
285 |
41 |
7 |
| CDI |
0 |
17 |
8 |
159 |
445 |
820 |
897 |
27 |
| VCDI |
0 |
0 |
2 |
69 |
495 |
2970 |
19255 |
17988 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
87 |
42 |
60 |
14 |
0 |
0 |
0 |
| OW |
0 |
66 |
33 |
141 |
59 |
0 |
0 |
0 |
| VODI |
0 |
63 |
54 |
265 |
257 |
87 |
29 |
0 |
| ODI |
0 |
45 |
31 |
274 |
388 |
283 |
139 |
5 |
| CDI |
0 |
32 |
24 |
222 |
451 |
753 |
904 |
72 |
| VCDI |
0 |
29 |
38 |
234 |
597 |
3019 |
19124 |
17945 |
|
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