Validation of sea ice concentration - American sector
Bulletin date: 2022-12-29
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2022-12-23:
| 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 |
0 |
10 |
6 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
11 |
12 |
47 |
37 |
2 |
0 |
0 |
| VODI |
0 |
12 |
27 |
93 |
91 |
24 |
5 |
0 |
| ODI |
0 |
16 |
22 |
148 |
347 |
250 |
24 |
0 |
| CDI |
0 |
6 |
3 |
61 |
396 |
816 |
208 |
0 |
| VCDI |
0 |
1 |
1 |
22 |
209 |
2474 |
16069 |
24415 |
|
...date precedes bulletin
|
Date: 2022-12-25:
| 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 |
34 |
2 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
113 |
57 |
44 |
16 |
12 |
0 |
0 |
| VODI |
0 |
104 |
207 |
146 |
58 |
51 |
0 |
0 |
| ODI |
0 |
60 |
127 |
262 |
218 |
88 |
0 |
0 |
| CDI |
0 |
15 |
71 |
260 |
426 |
293 |
29 |
5 |
| VCDI |
0 |
3 |
1 |
62 |
482 |
2894 |
14340 |
25386 |
|
...date precedes bulletin
|
Date: 2022-12-27:
| 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 |
33 |
2 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
82 |
40 |
33 |
5 |
0 |
0 |
0 |
| VODI |
0 |
40 |
92 |
284 |
162 |
23 |
0 |
0 |
| ODI |
0 |
24 |
66 |
217 |
280 |
206 |
23 |
0 |
| CDI |
0 |
1 |
1 |
86 |
298 |
382 |
61 |
0 |
| VCDI |
0 |
0 |
0 |
30 |
521 |
2682 |
13884 |
26299 |
|
...date precedes bulletin
|
Date: 2022-12-29:
| 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 |
11 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
17 |
17 |
33 |
16 |
0 |
0 |
0 |
| VODI |
0 |
9 |
42 |
87 |
117 |
29 |
0 |
0 |
| ODI |
0 |
0 |
19 |
169 |
343 |
153 |
38 |
0 |
| CDI |
0 |
0 |
1 |
71 |
289 |
287 |
186 |
16 |
| VCDI |
0 |
1 |
1 |
11 |
210 |
2540 |
13384 |
27769 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
18 |
8 |
9 |
14 |
0 |
0 |
0 |
| OW |
0 |
16 |
20 |
51 |
26 |
2 |
0 |
0 |
| VODI |
0 |
3 |
34 |
80 |
144 |
63 |
9 |
0 |
| ODI |
0 |
0 |
15 |
157 |
267 |
115 |
37 |
0 |
| CDI |
0 |
0 |
2 |
63 |
310 |
279 |
147 |
16 |
| VCDI |
0 |
1 |
1 |
11 |
214 |
2550 |
13415 |
27769 |
|
Date: 2022-12-31:
| 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 |
1 |
2 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
11 |
12 |
4 |
0 |
0 |
0 |
0 |
| VODI |
0 |
5 |
17 |
45 |
96 |
23 |
0 |
0 |
| ODI |
0 |
1 |
10 |
62 |
221 |
107 |
25 |
0 |
| CDI |
0 |
0 |
0 |
50 |
398 |
366 |
81 |
7 |
| VCDI |
0 |
0 |
0 |
13 |
229 |
2324 |
14461 |
27294 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
3 |
3 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
7 |
13 |
13 |
14 |
0 |
0 |
0 |
| VODI |
0 |
7 |
14 |
39 |
124 |
45 |
6 |
0 |
| ODI |
0 |
1 |
11 |
56 |
190 |
95 |
27 |
0 |
| CDI |
0 |
0 |
0 |
63 |
381 |
317 |
82 |
9 |
| VCDI |
0 |
0 |
0 |
3 |
235 |
2363 |
14452 |
27292 |
|
Date: 2023-01-02:
| 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 |
2 |
9 |
2 |
0 |
0 |
0 |
| VODI |
0 |
0 |
10 |
24 |
9 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
39 |
110 |
86 |
1 |
0 |
| CDI |
0 |
0 |
0 |
9 |
174 |
563 |
165 |
7 |
| VCDI |
0 |
0 |
0 |
35 |
188 |
2289 |
13796 |
28347 |
|
|
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 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
3 |
14 |
4 |
0 |
0 |
0 |
| VODI |
0 |
0 |
7 |
12 |
40 |
12 |
1 |
0 |
| ODI |
0 |
0 |
2 |
25 |
62 |
98 |
98 |
0 |
| CDI |
0 |
0 |
0 |
31 |
131 |
328 |
159 |
10 |
| VCDI |
0 |
0 |
0 |
32 |
246 |
2501 |
13704 |
28344 |
|
Date: 2023-01-04:
| 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 |
5 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
10 |
15 |
5 |
0 |
0 |
| ODI |
0 |
0 |
0 |
8 |
36 |
34 |
0 |
0 |
| CDI |
0 |
0 |
0 |
16 |
120 |
347 |
64 |
12 |
| VCDI |
0 |
4 |
0 |
40 |
240 |
2305 |
15289 |
27316 |
|
|
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 |
1 |
10 |
2 |
0 |
0 |
| VODI |
0 |
0 |
0 |
8 |
17 |
6 |
0 |
0 |
| ODI |
0 |
0 |
0 |
6 |
37 |
36 |
2 |
0 |
| CDI |
0 |
0 |
0 |
7 |
112 |
314 |
93 |
7 |
| VCDI |
0 |
4 |
0 |
52 |
240 |
2333 |
15258 |
27321 |
|
Date: 2023-01-06:
| 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 |
0 |
8 |
17 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
14 |
26 |
1 |
0 |
| CDI |
0 |
1 |
0 |
2 |
29 |
175 |
66 |
8 |
| VCDI |
0 |
0 |
1 |
10 |
149 |
1760 |
15546 |
28053 |
|
|
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 |
0 |
10 |
24 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
6 |
37 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
21 |
161 |
130 |
10 |
| VCDI |
0 |
1 |
1 |
12 |
163 |
1756 |
15483 |
28051 |
|
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