Validation of sea ice concentration - American sector
Bulletin date: 2021-05-27
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2021-05-23:
| 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 |
274 |
13 |
137 |
9 |
0 |
0 |
0 |
| OW |
0 |
67 |
13 |
165 |
64 |
1 |
0 |
0 |
| VODI |
0 |
71 |
12 |
242 |
291 |
15 |
11 |
0 |
| ODI |
0 |
90 |
16 |
163 |
391 |
164 |
21 |
0 |
| CDI |
0 |
195 |
31 |
449 |
1093 |
966 |
402 |
1 |
| VCDI |
0 |
36 |
8 |
190 |
1082 |
5642 |
15230 |
18311 |
|
...date precedes bulletin
|
Date: 2021-05-25:
| 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 |
367 |
25 |
171 |
25 |
1 |
0 |
0 |
| OW |
0 |
78 |
10 |
192 |
98 |
2 |
1 |
0 |
| VODI |
0 |
80 |
13 |
211 |
409 |
37 |
8 |
0 |
| ODI |
0 |
59 |
7 |
195 |
444 |
164 |
17 |
0 |
| CDI |
0 |
146 |
23 |
331 |
1308 |
1506 |
226 |
0 |
| VCDI |
0 |
7 |
3 |
92 |
538 |
4972 |
17579 |
16521 |
|
...date precedes bulletin
|
Date: 2021-05-27:
| 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 |
430 |
27 |
201 |
64 |
1 |
0 |
0 |
| OW |
0 |
116 |
24 |
223 |
132 |
19 |
0 |
0 |
| VODI |
0 |
83 |
13 |
217 |
400 |
66 |
5 |
0 |
| ODI |
0 |
56 |
6 |
198 |
459 |
133 |
24 |
0 |
| CDI |
0 |
76 |
15 |
339 |
1365 |
1254 |
181 |
0 |
| VCDI |
0 |
68 |
6 |
185 |
797 |
5879 |
16484 |
16320 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
436 |
27 |
249 |
97 |
1 |
0 |
0 |
| OW |
0 |
102 |
19 |
196 |
119 |
18 |
2 |
0 |
| VODI |
0 |
90 |
16 |
215 |
379 |
64 |
7 |
0 |
| ODI |
0 |
59 |
7 |
173 |
446 |
144 |
35 |
0 |
| CDI |
0 |
77 |
16 |
332 |
1354 |
1205 |
194 |
0 |
| VCDI |
0 |
65 |
6 |
198 |
822 |
5920 |
16456 |
16320 |
|
Date: 2021-05-29:
| 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 |
524 |
30 |
168 |
44 |
1 |
0 |
0 |
| OW |
0 |
136 |
18 |
163 |
236 |
12 |
3 |
0 |
| VODI |
0 |
103 |
15 |
269 |
352 |
57 |
11 |
0 |
| ODI |
0 |
112 |
15 |
230 |
372 |
139 |
19 |
0 |
| CDI |
0 |
157 |
26 |
255 |
1267 |
1622 |
381 |
0 |
| VCDI |
0 |
115 |
13 |
206 |
883 |
6827 |
18394 |
12691 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
535 |
29 |
177 |
95 |
5 |
3 |
0 |
| OW |
0 |
115 |
20 |
184 |
186 |
7 |
5 |
0 |
| VODI |
0 |
107 |
13 |
253 |
344 |
53 |
9 |
0 |
| ODI |
0 |
115 |
16 |
216 |
382 |
162 |
29 |
0 |
| CDI |
0 |
158 |
26 |
241 |
1236 |
1500 |
379 |
0 |
| VCDI |
0 |
117 |
13 |
220 |
911 |
6931 |
18383 |
12691 |
|
Date: 2021-05-31:
| 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 |
606 |
49 |
205 |
61 |
0 |
0 |
0 |
| OW |
0 |
168 |
14 |
318 |
140 |
6 |
0 |
0 |
| VODI |
0 |
84 |
12 |
361 |
388 |
34 |
6 |
0 |
| ODI |
0 |
91 |
14 |
172 |
820 |
238 |
38 |
0 |
| CDI |
0 |
66 |
3 |
153 |
1352 |
2099 |
311 |
0 |
| VCDI |
0 |
146 |
10 |
113 |
389 |
5186 |
18676 |
13537 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
487 |
38 |
251 |
122 |
4 |
8 |
0 |
| OW |
0 |
81 |
9 |
274 |
152 |
3 |
5 |
0 |
| VODI |
0 |
177 |
15 |
199 |
318 |
90 |
10 |
0 |
| ODI |
0 |
112 |
13 |
174 |
415 |
268 |
80 |
0 |
| CDI |
0 |
123 |
17 |
257 |
1425 |
1725 |
748 |
0 |
| VCDI |
0 |
181 |
10 |
167 |
718 |
5473 |
18180 |
13537 |
|
Date: 2021-06-02:
| 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 |
691 |
63 |
387 |
88 |
0 |
0 |
0 |
| OW |
0 |
122 |
15 |
337 |
189 |
15 |
2 |
0 |
| VODI |
0 |
78 |
9 |
300 |
453 |
54 |
8 |
0 |
| ODI |
0 |
57 |
10 |
172 |
752 |
255 |
46 |
0 |
| CDI |
0 |
50 |
2 |
131 |
1361 |
2098 |
589 |
3 |
| VCDI |
0 |
169 |
10 |
117 |
550 |
3639 |
14997 |
18047 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
484 |
53 |
363 |
167 |
1 |
8 |
0 |
| OW |
0 |
122 |
13 |
255 |
130 |
21 |
6 |
0 |
| VODI |
0 |
178 |
14 |
230 |
349 |
90 |
24 |
0 |
| ODI |
0 |
108 |
13 |
212 |
476 |
239 |
120 |
0 |
| CDI |
0 |
88 |
6 |
239 |
1680 |
2069 |
1228 |
1 |
| VCDI |
0 |
187 |
10 |
145 |
591 |
3641 |
14256 |
18049 |
|
Date: 2021-06-04:
| 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 |
799 |
82 |
476 |
109 |
0 |
0 |
0 |
| OW |
0 |
130 |
19 |
347 |
201 |
41 |
3 |
0 |
| VODI |
0 |
116 |
9 |
315 |
439 |
78 |
7 |
0 |
| ODI |
0 |
72 |
9 |
170 |
730 |
232 |
46 |
0 |
| CDI |
0 |
57 |
4 |
132 |
1478 |
1890 |
1157 |
30 |
| VCDI |
0 |
152 |
15 |
146 |
738 |
3732 |
21193 |
10712 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
525 |
60 |
373 |
144 |
14 |
10 |
0 |
| OW |
0 |
169 |
24 |
240 |
147 |
39 |
9 |
0 |
| VODI |
0 |
197 |
13 |
280 |
323 |
169 |
42 |
0 |
| ODI |
0 |
154 |
18 |
240 |
400 |
200 |
147 |
0 |
| CDI |
0 |
101 |
5 |
262 |
2042 |
2164 |
2317 |
0 |
| VCDI |
0 |
180 |
18 |
191 |
639 |
3387 |
19881 |
10742 |
|
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