Validation of sea ice concentration - American sector
Bulletin date: 2023-04-27
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-04-21:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
6 |
14 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
7 |
62 |
33 |
10 |
0 |
| CDI |
0 |
0 |
0 |
7 |
140 |
188 |
149 |
20 |
| VCDI |
0 |
0 |
0 |
0 |
411 |
1500 |
8088 |
35227 |
|
...date precedes bulletin
|
Date: 2023-04-23:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2023-04-25:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
12 |
1 |
0 |
1 |
6 |
| ODI |
0 |
0 |
0 |
9 |
35 |
37 |
18 |
21 |
| CDI |
0 |
0 |
0 |
10 |
183 |
327 |
317 |
52 |
| VCDI |
0 |
0 |
0 |
8 |
437 |
2003 |
11028 |
31361 |
|
...date precedes bulletin
|
Date: 2023-04-27:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
3 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
12 |
2 |
10 |
3 |
0 |
| ODI |
0 |
0 |
0 |
15 |
29 |
59 |
33 |
0 |
| CDI |
0 |
0 |
0 |
11 |
250 |
302 |
299 |
7 |
| VCDI |
0 |
0 |
0 |
17 |
455 |
2146 |
9763 |
32450 |
|
|
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 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
4 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
14 |
3 |
10 |
9 |
0 |
| ODI |
0 |
0 |
0 |
15 |
32 |
67 |
34 |
1 |
| CDI |
0 |
0 |
0 |
8 |
310 |
291 |
281 |
6 |
| VCDI |
0 |
0 |
0 |
17 |
391 |
2149 |
9774 |
32450 |
|
Date: 2023-04-29:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
4 |
5 |
1 |
0 |
0 |
| VODI |
0 |
0 |
0 |
13 |
14 |
3 |
9 |
0 |
| ODI |
0 |
0 |
0 |
13 |
24 |
44 |
48 |
0 |
| CDI |
0 |
0 |
0 |
7 |
263 |
322 |
314 |
14 |
| VCDI |
0 |
0 |
0 |
16 |
510 |
1942 |
11637 |
30663 |
|
|
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 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
4 |
5 |
1 |
0 |
0 |
| VODI |
0 |
0 |
0 |
13 |
12 |
2 |
11 |
0 |
| ODI |
0 |
0 |
0 |
16 |
27 |
52 |
56 |
5 |
| CDI |
0 |
0 |
0 |
3 |
346 |
334 |
297 |
21 |
| VCDI |
0 |
0 |
0 |
16 |
426 |
1923 |
11644 |
30651 |
|
Date: 2023-05-01:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
13 |
1 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
40 |
26 |
6 |
0 |
0 |
| ODI |
0 |
0 |
0 |
35 |
123 |
50 |
10 |
0 |
| CDI |
0 |
0 |
0 |
26 |
552 |
794 |
110 |
6 |
| VCDI |
0 |
0 |
0 |
30 |
681 |
1718 |
11617 |
30028 |
|
|
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 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
3 |
4 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
13 |
9 |
13 |
12 |
0 |
| ODI |
0 |
0 |
0 |
32 |
42 |
68 |
60 |
1 |
| CDI |
0 |
0 |
0 |
47 |
334 |
538 |
276 |
16 |
| VCDI |
0 |
0 |
0 |
49 |
994 |
1949 |
11389 |
30017 |
|
Date: 2023-05-03:
| 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 |
0 |
0 |
0 |
8 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
27 |
7 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
43 |
53 |
17 |
0 |
0 |
| ODI |
0 |
0 |
0 |
50 |
170 |
72 |
21 |
0 |
| CDI |
0 |
0 |
0 |
62 |
670 |
674 |
224 |
14 |
| VCDI |
0 |
0 |
0 |
83 |
519 |
2321 |
13757 |
27074 |
|
|
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 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
3 |
6 |
11 |
0 |
0 |
| VODI |
0 |
0 |
0 |
32 |
38 |
33 |
22 |
0 |
| ODI |
0 |
0 |
0 |
49 |
118 |
106 |
49 |
0 |
| CDI |
0 |
0 |
0 |
93 |
541 |
499 |
242 |
13 |
| VCDI |
0 |
0 |
0 |
96 |
716 |
2435 |
13689 |
27075 |
|
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 |
|
|
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 |
2 |
1 |
0 |
5 |
0 |
| OW |
0 |
0 |
0 |
12 |
18 |
18 |
14 |
0 |
| VODI |
0 |
0 |
0 |
56 |
62 |
82 |
35 |
0 |
| ODI |
0 |
0 |
0 |
77 |
117 |
107 |
51 |
0 |
| CDI |
0 |
0 |
0 |
86 |
420 |
480 |
284 |
81 |
| VCDI |
0 |
0 |
0 |
106 |
735 |
2974 |
12446 |
27597 |
|
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