Validation of sea ice concentration - American sector
Bulletin date: 2021-05-20
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2021-05-14:
| 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 |
237 |
16 |
123 |
16 |
0 |
0 |
0 |
| OW |
0 |
4 |
3 |
66 |
97 |
3 |
0 |
0 |
| VODI |
0 |
11 |
2 |
74 |
215 |
30 |
0 |
0 |
| ODI |
0 |
15 |
1 |
67 |
205 |
188 |
5 |
0 |
| CDI |
0 |
36 |
13 |
114 |
474 |
673 |
260 |
3 |
| VCDI |
0 |
21 |
2 |
111 |
646 |
3675 |
12011 |
26449 |
|
...date precedes bulletin
|
Date: 2021-05-16:
| 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 |
269 |
14 |
95 |
14 |
0 |
0 |
0 |
| OW |
0 |
10 |
2 |
76 |
89 |
1 |
0 |
0 |
| VODI |
0 |
14 |
1 |
101 |
182 |
33 |
0 |
0 |
| ODI |
0 |
15 |
3 |
67 |
249 |
161 |
3 |
0 |
| CDI |
0 |
44 |
9 |
104 |
491 |
655 |
223 |
0 |
| VCDI |
0 |
29 |
7 |
164 |
861 |
3736 |
12394 |
25750 |
|
...date precedes bulletin
|
Date: 2021-05-18:
| 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 |
258 |
18 |
84 |
6 |
0 |
0 |
0 |
| OW |
0 |
6 |
2 |
95 |
128 |
2 |
0 |
0 |
| VODI |
0 |
11 |
2 |
128 |
282 |
17 |
0 |
0 |
| ODI |
0 |
15 |
2 |
57 |
357 |
103 |
1 |
0 |
| CDI |
0 |
28 |
7 |
151 |
765 |
918 |
318 |
0 |
| VCDI |
0 |
21 |
6 |
159 |
851 |
3633 |
14362 |
23073 |
|
...date precedes bulletin
|
Date: 2021-05-20:
| 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 |
261 |
15 |
130 |
25 |
0 |
0 |
0 |
| OW |
0 |
12 |
3 |
141 |
95 |
1 |
0 |
0 |
| VODI |
0 |
3 |
3 |
130 |
243 |
15 |
0 |
0 |
| ODI |
0 |
11 |
3 |
130 |
346 |
138 |
13 |
0 |
| CDI |
0 |
33 |
12 |
270 |
1068 |
1236 |
448 |
2 |
| VCDI |
0 |
10 |
1 |
164 |
720 |
4476 |
15342 |
20366 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
269 |
15 |
165 |
31 |
0 |
0 |
0 |
| OW |
0 |
4 |
2 |
125 |
89 |
2 |
0 |
0 |
| VODI |
0 |
2 |
3 |
108 |
271 |
25 |
0 |
0 |
| ODI |
0 |
7 |
3 |
131 |
331 |
151 |
21 |
0 |
| CDI |
0 |
39 |
13 |
259 |
1052 |
1223 |
458 |
2 |
| VCDI |
0 |
9 |
1 |
177 |
723 |
4465 |
15324 |
20366 |
|
Date: 2021-05-22:
| 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 |
285 |
11 |
139 |
21 |
0 |
0 |
0 |
| OW |
0 |
43 |
13 |
163 |
70 |
1 |
0 |
0 |
| VODI |
0 |
62 |
11 |
161 |
304 |
12 |
10 |
0 |
| ODI |
0 |
80 |
16 |
168 |
401 |
138 |
23 |
0 |
| CDI |
0 |
136 |
23 |
462 |
1172 |
1037 |
325 |
1 |
| VCDI |
0 |
23 |
3 |
146 |
916 |
5033 |
15826 |
18631 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
298 |
16 |
189 |
23 |
0 |
0 |
0 |
| OW |
0 |
27 |
9 |
142 |
78 |
1 |
0 |
0 |
| VODI |
0 |
60 |
10 |
142 |
331 |
10 |
12 |
0 |
| ODI |
0 |
79 |
15 |
149 |
358 |
165 |
23 |
0 |
| CDI |
0 |
141 |
23 |
454 |
1083 |
1005 |
350 |
0 |
| VCDI |
0 |
24 |
4 |
163 |
1011 |
5040 |
15799 |
18632 |
|
Date: 2021-05-24:
| 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 |
335 |
25 |
136 |
21 |
0 |
0 |
0 |
| OW |
0 |
86 |
13 |
171 |
73 |
2 |
0 |
0 |
| VODI |
0 |
75 |
15 |
308 |
370 |
16 |
7 |
0 |
| ODI |
0 |
56 |
9 |
217 |
558 |
151 |
15 |
0 |
| CDI |
0 |
156 |
26 |
361 |
1383 |
1554 |
273 |
0 |
| VCDI |
0 |
1 |
5 |
49 |
536 |
5174 |
16743 |
16946 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
306 |
24 |
160 |
18 |
0 |
0 |
0 |
| OW |
0 |
41 |
8 |
143 |
107 |
1 |
0 |
0 |
| VODI |
0 |
67 |
6 |
168 |
339 |
33 |
15 |
0 |
| ODI |
0 |
74 |
16 |
157 |
379 |
177 |
34 |
0 |
| CDI |
0 |
179 |
30 |
419 |
886 |
960 |
676 |
38 |
| VCDI |
0 |
42 |
9 |
195 |
1212 |
5726 |
16313 |
16908 |
|
Date: 2021-05-26:
| 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 |
414 |
26 |
161 |
52 |
3 |
0 |
0 |
| OW |
0 |
87 |
17 |
188 |
143 |
7 |
1 |
0 |
| VODI |
0 |
83 |
8 |
229 |
421 |
38 |
5 |
0 |
| ODI |
0 |
53 |
11 |
147 |
516 |
125 |
23 |
0 |
| CDI |
0 |
115 |
15 |
356 |
1376 |
1238 |
153 |
0 |
| VCDI |
0 |
39 |
5 |
150 |
551 |
5861 |
16922 |
16327 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
354 |
19 |
118 |
52 |
1 |
0 |
0 |
| OW |
0 |
66 |
13 |
117 |
99 |
13 |
2 |
0 |
| VODI |
0 |
74 |
10 |
184 |
382 |
60 |
10 |
0 |
| ODI |
0 |
67 |
13 |
165 |
402 |
142 |
37 |
0 |
| CDI |
0 |
191 |
23 |
438 |
1135 |
989 |
443 |
0 |
| VCDI |
0 |
39 |
4 |
209 |
989 |
6067 |
16612 |
16327 |
|
Date: 2021-05-28:
| 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 |
487 |
34 |
200 |
40 |
2 |
0 |
0 |
| OW |
0 |
126 |
20 |
229 |
148 |
16 |
0 |
0 |
| VODI |
0 |
115 |
17 |
247 |
369 |
56 |
10 |
0 |
| ODI |
0 |
75 |
13 |
242 |
397 |
127 |
18 |
0 |
| CDI |
0 |
112 |
21 |
313 |
1225 |
1467 |
229 |
0 |
| VCDI |
0 |
80 |
10 |
226 |
812 |
5992 |
19559 |
12832 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
373 |
15 |
213 |
56 |
7 |
1 |
0 |
| OW |
0 |
85 |
14 |
129 |
119 |
53 |
0 |
0 |
| VODI |
0 |
110 |
18 |
179 |
314 |
103 |
20 |
0 |
| ODI |
0 |
93 |
17 |
199 |
337 |
105 |
59 |
0 |
| CDI |
0 |
212 |
27 |
389 |
886 |
970 |
310 |
0 |
| VCDI |
0 |
122 |
24 |
348 |
1279 |
6422 |
19426 |
12832 |
|
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