Validation of sea ice concentration - American sector
Bulletin date: 2021-12-23
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2021-12-17:
| 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 |
62 |
2933 |
49 |
259 |
183 |
0 |
0 |
0 |
| OW |
0 |
402 |
36 |
269 |
165 |
24 |
0 |
0 |
| VODI |
0 |
160 |
15 |
208 |
273 |
58 |
0 |
0 |
| ODI |
0 |
88 |
9 |
130 |
253 |
77 |
10 |
0 |
| CDI |
0 |
55 |
9 |
49 |
233 |
410 |
52 |
0 |
| VCDI |
0 |
9 |
4 |
50 |
297 |
3270 |
6469 |
29296 |
|
...date precedes bulletin
|
Date: 2021-12-19:
| 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 |
59 |
1676 |
48 |
368 |
209 |
64 |
0 |
0 |
| OW |
3 |
247 |
28 |
309 |
298 |
252 |
0 |
0 |
| VODI |
0 |
94 |
2 |
154 |
239 |
272 |
0 |
0 |
| ODI |
0 |
47 |
3 |
21 |
232 |
274 |
11 |
0 |
| CDI |
0 |
76 |
8 |
28 |
179 |
473 |
35 |
5 |
| VCDI |
0 |
7 |
2 |
6 |
183 |
3436 |
6238 |
30280 |
|
...date precedes bulletin
|
Date: 2021-12-21:
| 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 |
356 |
13 |
187 |
149 |
88 |
0 |
0 |
| OW |
0 |
429 |
21 |
204 |
300 |
72 |
0 |
0 |
| VODI |
0 |
142 |
13 |
148 |
396 |
216 |
14 |
0 |
| ODI |
0 |
39 |
6 |
21 |
310 |
397 |
31 |
0 |
| CDI |
0 |
35 |
2 |
16 |
128 |
791 |
156 |
0 |
| VCDI |
0 |
31 |
7 |
49 |
133 |
3661 |
13778 |
23527 |
|
...date precedes bulletin
|
Date: 2021-12-23:
| 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 |
54 |
5 |
43 |
3 |
95 |
26 |
0 |
| OW |
0 |
278 |
19 |
183 |
116 |
296 |
56 |
0 |
| VODI |
0 |
186 |
11 |
125 |
127 |
373 |
39 |
0 |
| ODI |
0 |
53 |
7 |
52 |
135 |
376 |
145 |
0 |
| CDI |
0 |
20 |
4 |
40 |
90 |
471 |
236 |
9 |
| VCDI |
0 |
29 |
5 |
89 |
104 |
2787 |
10065 |
29114 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
61 |
5 |
81 |
8 |
130 |
49 |
0 |
| OW |
0 |
259 |
20 |
160 |
82 |
190 |
37 |
0 |
| VODI |
0 |
193 |
10 |
101 |
154 |
414 |
34 |
0 |
| ODI |
0 |
57 |
7 |
62 |
153 |
351 |
115 |
0 |
| CDI |
0 |
25 |
4 |
48 |
75 |
577 |
267 |
9 |
| VCDI |
0 |
25 |
5 |
80 |
103 |
2736 |
10065 |
29114 |
|
Date: 2021-12-25:
| 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 |
60 |
2 |
10 |
3 |
8 |
10 |
0 |
| OW |
0 |
188 |
7 |
73 |
105 |
182 |
45 |
0 |
| VODI |
0 |
240 |
16 |
120 |
162 |
357 |
33 |
0 |
| ODI |
0 |
81 |
14 |
130 |
167 |
251 |
126 |
0 |
| CDI |
0 |
43 |
7 |
77 |
117 |
398 |
297 |
0 |
| VCDI |
0 |
29 |
3 |
59 |
132 |
3442 |
6999 |
31873 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
108 |
3 |
20 |
4 |
43 |
39 |
0 |
| OW |
0 |
147 |
9 |
86 |
75 |
132 |
24 |
0 |
| VODI |
0 |
220 |
11 |
96 |
175 |
353 |
28 |
0 |
| ODI |
0 |
86 |
16 |
128 |
184 |
253 |
88 |
0 |
| CDI |
0 |
56 |
7 |
83 |
115 |
424 |
334 |
1 |
| VCDI |
0 |
24 |
3 |
56 |
133 |
3433 |
6997 |
31872 |
|
Date: 2021-12-27:
| 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 |
49 |
6 |
7 |
1 |
0 |
0 |
0 |
| OW |
0 |
42 |
5 |
73 |
21 |
0 |
0 |
0 |
| VODI |
0 |
97 |
18 |
380 |
153 |
9 |
2 |
0 |
| ODI |
0 |
25 |
5 |
146 |
264 |
69 |
100 |
0 |
| CDI |
0 |
3 |
1 |
42 |
121 |
323 |
745 |
51 |
| VCDI |
0 |
0 |
0 |
26 |
93 |
1870 |
9428 |
31691 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
39 |
6 |
25 |
18 |
0 |
13 |
0 |
| OW |
0 |
30 |
6 |
92 |
39 |
3 |
110 |
0 |
| VODI |
0 |
93 |
10 |
233 |
137 |
155 |
284 |
0 |
| ODI |
0 |
35 |
9 |
138 |
135 |
43 |
261 |
0 |
| CDI |
0 |
18 |
3 |
119 |
201 |
222 |
485 |
44 |
| VCDI |
0 |
1 |
1 |
67 |
123 |
1848 |
9122 |
31698 |
|
Date: 2021-12-29:
| 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 |
5 |
1 |
31 |
1 |
0 |
0 |
0 |
| OW |
0 |
9 |
2 |
41 |
33 |
1 |
0 |
0 |
| VODI |
0 |
4 |
2 |
244 |
199 |
16 |
0 |
0 |
| ODI |
0 |
10 |
2 |
108 |
325 |
80 |
32 |
0 |
| CDI |
0 |
0 |
0 |
57 |
180 |
198 |
379 |
1 |
| VCDI |
0 |
0 |
0 |
2 |
111 |
1077 |
7463 |
35252 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
6 |
1 |
36 |
6 |
1 |
0 |
0 |
| OW |
0 |
7 |
1 |
44 |
32 |
1 |
13 |
0 |
| VODI |
0 |
4 |
3 |
161 |
140 |
89 |
242 |
0 |
| ODI |
0 |
11 |
2 |
122 |
211 |
84 |
266 |
5 |
| CDI |
0 |
0 |
0 |
83 |
223 |
87 |
423 |
39 |
| VCDI |
0 |
0 |
0 |
37 |
237 |
1110 |
6930 |
35209 |
|
Date: 2021-12-31:
| 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 |
0 |
0 |
21 |
2 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
30 |
18 |
0 |
0 |
0 |
| VODI |
0 |
8 |
2 |
79 |
125 |
1 |
0 |
0 |
| ODI |
0 |
10 |
3 |
137 |
316 |
64 |
0 |
0 |
| CDI |
0 |
0 |
0 |
74 |
374 |
149 |
41 |
5 |
| VCDI |
0 |
0 |
0 |
19 |
176 |
1521 |
6313 |
36378 |
|
|
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 |
16 |
13 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
16 |
28 |
0 |
1 |
0 |
| VODI |
0 |
0 |
0 |
52 |
79 |
43 |
132 |
0 |
| ODI |
0 |
18 |
5 |
135 |
244 |
119 |
185 |
0 |
| CDI |
0 |
0 |
0 |
103 |
254 |
190 |
316 |
8 |
| VCDI |
0 |
0 |
0 |
38 |
393 |
1383 |
5720 |
36375 |
|
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