Validation of sea ice concentration - American sector
Bulletin date: 2021-05-13
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2021-05-07:
| 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 |
194 |
11 |
71 |
34 |
0 |
0 |
0 |
| OW |
0 |
85 |
2 |
30 |
43 |
1 |
0 |
0 |
| VODI |
0 |
1 |
0 |
16 |
111 |
21 |
6 |
0 |
| ODI |
0 |
0 |
0 |
14 |
163 |
77 |
32 |
0 |
| CDI |
0 |
5 |
2 |
22 |
456 |
304 |
253 |
9 |
| VCDI |
0 |
3 |
0 |
32 |
534 |
2673 |
11823 |
28838 |
|
...date precedes bulletin
|
Date: 2021-05-09:
| 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 |
259 |
12 |
78 |
31 |
0 |
0 |
0 |
| OW |
0 |
22 |
0 |
26 |
70 |
8 |
0 |
0 |
| VODI |
0 |
0 |
0 |
17 |
156 |
36 |
10 |
0 |
| ODI |
0 |
0 |
0 |
24 |
193 |
91 |
40 |
0 |
| CDI |
0 |
4 |
1 |
64 |
444 |
505 |
498 |
7 |
| VCDI |
0 |
5 |
1 |
48 |
594 |
2706 |
12117 |
27799 |
|
...date precedes bulletin
|
Date: 2021-05-11:
| 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 |
257 |
16 |
92 |
40 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
58 |
76 |
1 |
0 |
0 |
| VODI |
0 |
0 |
0 |
63 |
195 |
12 |
0 |
0 |
| ODI |
0 |
0 |
0 |
57 |
243 |
76 |
17 |
0 |
| CDI |
0 |
1 |
0 |
89 |
442 |
653 |
273 |
24 |
| VCDI |
0 |
0 |
0 |
41 |
471 |
2845 |
12706 |
27118 |
|
...date precedes bulletin
|
Date: 2021-05-13:
| 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 |
242 |
13 |
115 |
27 |
0 |
0 |
0 |
| OW |
0 |
1 |
3 |
57 |
98 |
1 |
0 |
0 |
| VODI |
0 |
10 |
1 |
75 |
208 |
32 |
0 |
0 |
| ODI |
0 |
12 |
2 |
55 |
219 |
185 |
14 |
0 |
| CDI |
0 |
20 |
5 |
100 |
356 |
597 |
318 |
1 |
| VCDI |
0 |
15 |
4 |
106 |
597 |
2776 |
12857 |
26744 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
242 |
13 |
124 |
39 |
0 |
0 |
0 |
| OW |
0 |
1 |
3 |
50 |
73 |
0 |
0 |
0 |
| VODI |
0 |
10 |
1 |
71 |
234 |
32 |
0 |
0 |
| ODI |
0 |
11 |
2 |
53 |
187 |
186 |
18 |
0 |
| CDI |
0 |
21 |
5 |
92 |
371 |
589 |
289 |
1 |
| VCDI |
0 |
15 |
4 |
118 |
601 |
2784 |
12882 |
26744 |
|
Date: 2021-05-15:
| 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 |
249 |
14 |
109 |
14 |
0 |
0 |
0 |
| OW |
0 |
6 |
2 |
61 |
95 |
1 |
0 |
0 |
| VODI |
0 |
10 |
1 |
115 |
193 |
27 |
0 |
0 |
| ODI |
0 |
13 |
2 |
78 |
241 |
179 |
5 |
0 |
| CDI |
0 |
38 |
12 |
142 |
487 |
636 |
213 |
0 |
| VCDI |
0 |
26 |
8 |
136 |
815 |
4199 |
11880 |
25859 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
248 |
13 |
124 |
24 |
0 |
0 |
0 |
| OW |
0 |
6 |
2 |
55 |
82 |
0 |
0 |
0 |
| VODI |
0 |
11 |
2 |
100 |
206 |
31 |
0 |
0 |
| ODI |
0 |
11 |
2 |
71 |
214 |
176 |
17 |
0 |
| CDI |
0 |
37 |
10 |
140 |
455 |
592 |
209 |
0 |
| VCDI |
0 |
29 |
10 |
151 |
864 |
4243 |
11872 |
25859 |
|
Date: 2021-05-17:
| 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 |
275 |
14 |
80 |
5 |
0 |
0 |
0 |
| OW |
0 |
8 |
3 |
92 |
69 |
1 |
0 |
0 |
| VODI |
0 |
18 |
2 |
146 |
278 |
5 |
0 |
0 |
| ODI |
0 |
20 |
1 |
58 |
429 |
82 |
0 |
0 |
| CDI |
0 |
26 |
7 |
120 |
767 |
943 |
214 |
2 |
| VCDI |
0 |
24 |
6 |
126 |
696 |
3465 |
14499 |
23385 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
271 |
13 |
115 |
29 |
0 |
0 |
0 |
| OW |
0 |
5 |
2 |
47 |
91 |
2 |
0 |
0 |
| VODI |
0 |
11 |
2 |
80 |
236 |
23 |
0 |
0 |
| ODI |
0 |
12 |
2 |
65 |
222 |
124 |
1 |
0 |
| CDI |
0 |
43 |
3 |
86 |
614 |
600 |
296 |
2 |
| VCDI |
0 |
29 |
11 |
229 |
1052 |
3747 |
14416 |
23385 |
|
Date: 2021-05-19:
| 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 |
259 |
16 |
87 |
10 |
0 |
0 |
0 |
| OW |
0 |
2 |
4 |
157 |
87 |
3 |
0 |
0 |
| VODI |
0 |
6 |
2 |
120 |
245 |
32 |
0 |
0 |
| ODI |
0 |
18 |
2 |
92 |
300 |
173 |
3 |
0 |
| CDI |
0 |
39 |
9 |
225 |
916 |
1048 |
407 |
0 |
| VCDI |
0 |
19 |
4 |
171 |
708 |
4493 |
15684 |
20525 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
259 |
16 |
129 |
56 |
9 |
0 |
0 |
| OW |
0 |
2 |
1 |
57 |
88 |
12 |
0 |
0 |
| VODI |
0 |
3 |
4 |
92 |
179 |
44 |
19 |
0 |
| ODI |
0 |
10 |
2 |
72 |
174 |
175 |
45 |
0 |
| CDI |
0 |
33 |
3 |
145 |
522 |
599 |
492 |
4 |
| VCDI |
0 |
36 |
11 |
357 |
1247 |
4910 |
15538 |
20521 |
|
Date: 2021-05-21:
| 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 |
296 |
10 |
118 |
22 |
0 |
0 |
0 |
| OW |
0 |
32 |
7 |
158 |
72 |
1 |
0 |
0 |
| VODI |
0 |
26 |
9 |
161 |
243 |
19 |
0 |
0 |
| ODI |
0 |
40 |
12 |
145 |
385 |
159 |
28 |
0 |
| CDI |
0 |
58 |
11 |
386 |
1126 |
1189 |
379 |
2 |
| VCDI |
0 |
20 |
5 |
147 |
724 |
4260 |
15001 |
20615 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
322 |
13 |
148 |
56 |
1 |
0 |
0 |
| OW |
0 |
4 |
1 |
60 |
100 |
4 |
3 |
0 |
| VODI |
0 |
14 |
5 |
92 |
205 |
72 |
44 |
0 |
| ODI |
0 |
19 |
1 |
85 |
248 |
145 |
34 |
0 |
| CDI |
0 |
51 |
17 |
282 |
579 |
741 |
363 |
17 |
| VCDI |
0 |
62 |
17 |
448 |
1384 |
4665 |
14964 |
20600 |
|
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