Validation of sea ice concentration - American sector
Bulletin date: 2023-05-18
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-05-12:
| 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 |
66 |
11 |
0 |
0 |
0 |
| OW |
0 |
3 |
10 |
62 |
53 |
0 |
0 |
0 |
| VODI |
0 |
18 |
25 |
71 |
176 |
15 |
0 |
0 |
| ODI |
0 |
1 |
8 |
94 |
268 |
241 |
11 |
0 |
| CDI |
0 |
42 |
14 |
165 |
667 |
989 |
503 |
3 |
| VCDI |
0 |
10 |
33 |
219 |
732 |
3161 |
14488 |
23707 |
|
...date precedes bulletin
|
Date: 2023-05-14:
| 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 |
71 |
7 |
0 |
0 |
0 |
| OW |
0 |
6 |
13 |
110 |
48 |
2 |
0 |
0 |
| VODI |
0 |
3 |
22 |
145 |
310 |
32 |
0 |
0 |
| ODI |
0 |
0 |
1 |
141 |
407 |
155 |
24 |
0 |
| CDI |
0 |
4 |
5 |
199 |
914 |
934 |
333 |
3 |
| VCDI |
0 |
38 |
60 |
437 |
3271 |
5493 |
12724 |
19954 |
|
...date precedes bulletin
|
Date: 2023-05-16:
| 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 |
111 |
56 |
76 |
0 |
0 |
0 |
0 |
| OW |
0 |
33 |
56 |
248 |
21 |
0 |
0 |
0 |
| VODI |
0 |
58 |
39 |
330 |
260 |
33 |
3 |
0 |
| ODI |
0 |
7 |
16 |
237 |
424 |
226 |
26 |
0 |
| CDI |
0 |
0 |
0 |
199 |
561 |
1337 |
493 |
26 |
| VCDI |
0 |
0 |
0 |
34 |
420 |
3835 |
17867 |
18834 |
|
...date precedes bulletin
|
Date: 2023-05-18:
| 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 |
72 |
100 |
0 |
0 |
0 |
0 |
| OW |
0 |
62 |
42 |
241 |
52 |
0 |
0 |
0 |
| VODI |
0 |
74 |
61 |
294 |
308 |
66 |
0 |
0 |
| ODI |
0 |
15 |
23 |
250 |
373 |
298 |
17 |
0 |
| CDI |
0 |
15 |
3 |
136 |
478 |
1272 |
486 |
5 |
| VCDI |
0 |
4 |
2 |
74 |
465 |
2941 |
13432 |
24063 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
132 |
66 |
121 |
4 |
0 |
0 |
0 |
| OW |
0 |
67 |
41 |
195 |
54 |
0 |
0 |
0 |
| VODI |
0 |
76 |
66 |
319 |
299 |
57 |
0 |
0 |
| ODI |
0 |
16 |
24 |
240 |
379 |
282 |
14 |
0 |
| CDI |
0 |
18 |
4 |
150 |
479 |
1246 |
427 |
6 |
| VCDI |
0 |
3 |
2 |
70 |
461 |
2992 |
13494 |
24062 |
|
Date: 2023-05-20:
| 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 |
156 |
57 |
38 |
4 |
0 |
0 |
0 |
| OW |
0 |
125 |
60 |
246 |
106 |
0 |
0 |
0 |
| VODI |
0 |
90 |
82 |
390 |
342 |
78 |
5 |
0 |
| ODI |
0 |
28 |
40 |
285 |
374 |
328 |
47 |
0 |
| CDI |
0 |
13 |
13 |
215 |
428 |
894 |
822 |
0 |
| VCDI |
0 |
5 |
1 |
87 |
660 |
3637 |
22885 |
13325 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
201 |
70 |
77 |
12 |
0 |
0 |
0 |
| OW |
0 |
74 |
43 |
213 |
88 |
4 |
0 |
0 |
| VODI |
0 |
88 |
78 |
360 |
359 |
73 |
5 |
0 |
| ODI |
0 |
34 |
39 |
304 |
372 |
250 |
51 |
0 |
| CDI |
0 |
15 |
22 |
192 |
398 |
932 |
683 |
0 |
| VCDI |
0 |
5 |
1 |
115 |
685 |
3678 |
23020 |
13325 |
|
Date: 2023-05-22:
| 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 |
472 |
149 |
94 |
5 |
0 |
0 |
0 |
| OW |
0 |
40 |
95 |
451 |
56 |
0 |
0 |
0 |
| VODI |
0 |
13 |
22 |
508 |
382 |
19 |
1 |
0 |
| ODI |
0 |
3 |
0 |
163 |
728 |
184 |
14 |
0 |
| CDI |
0 |
8 |
1 |
126 |
588 |
1106 |
171 |
1 |
| VCDI |
0 |
0 |
0 |
2 |
515 |
3176 |
20954 |
15819 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
261 |
56 |
101 |
24 |
0 |
0 |
0 |
| OW |
0 |
120 |
59 |
260 |
149 |
23 |
0 |
0 |
| VODI |
0 |
100 |
90 |
328 |
393 |
75 |
7 |
0 |
| ODI |
0 |
31 |
42 |
296 |
386 |
337 |
42 |
0 |
| CDI |
0 |
18 |
19 |
242 |
413 |
679 |
911 |
3 |
| VCDI |
0 |
6 |
1 |
117 |
909 |
3371 |
20180 |
15817 |
|
Date: 2023-05-24:
| 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 |
597 |
226 |
253 |
7 |
0 |
0 |
0 |
| OW |
0 |
80 |
61 |
505 |
47 |
4 |
0 |
0 |
| VODI |
0 |
58 |
26 |
439 |
455 |
35 |
2 |
0 |
| ODI |
0 |
26 |
11 |
151 |
578 |
137 |
9 |
0 |
| CDI |
0 |
11 |
6 |
159 |
526 |
956 |
279 |
3 |
| VCDI |
0 |
8 |
3 |
31 |
280 |
1743 |
13044 |
25110 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
292 |
97 |
242 |
55 |
6 |
0 |
0 |
| OW |
0 |
177 |
40 |
276 |
195 |
12 |
0 |
0 |
| VODI |
0 |
159 |
98 |
367 |
452 |
95 |
12 |
0 |
| ODI |
0 |
77 |
53 |
240 |
351 |
380 |
39 |
0 |
| CDI |
0 |
71 |
36 |
267 |
300 |
574 |
910 |
81 |
| VCDI |
0 |
4 |
9 |
146 |
540 |
1808 |
12373 |
25032 |
|
Date: 2023-05-26:
| 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 |
491 |
202 |
388 |
19 |
1 |
0 |
0 |
| OW |
0 |
110 |
88 |
443 |
163 |
11 |
0 |
0 |
| VODI |
0 |
65 |
39 |
336 |
568 |
74 |
4 |
0 |
| ODI |
0 |
33 |
22 |
163 |
472 |
285 |
49 |
0 |
| CDI |
0 |
18 |
12 |
231 |
563 |
1292 |
527 |
3 |
| VCDI |
0 |
21 |
9 |
120 |
424 |
3211 |
11649 |
23760 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
218 |
122 |
312 |
161 |
23 |
0 |
0 |
| OW |
0 |
170 |
55 |
311 |
287 |
85 |
1 |
0 |
| VODI |
0 |
179 |
71 |
319 |
407 |
223 |
14 |
0 |
| ODI |
0 |
83 |
67 |
187 |
332 |
400 |
93 |
0 |
| CDI |
0 |
53 |
37 |
316 |
403 |
752 |
827 |
12 |
| VCDI |
0 |
35 |
20 |
236 |
619 |
3391 |
11294 |
23751 |
|
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