Validation of sea ice concentration - American sector
Bulletin date: 2022-05-19
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2022-05-13:
| 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 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
7 |
14 |
22 |
26 |
21 |
9 |
0 |
| VODI |
0 |
23 |
7 |
69 |
118 |
85 |
54 |
0 |
| ODI |
0 |
18 |
6 |
38 |
129 |
201 |
157 |
0 |
| CDI |
0 |
34 |
37 |
198 |
272 |
531 |
813 |
27 |
| VCDI |
0 |
142 |
97 |
387 |
1008 |
5500 |
17809 |
18005 |
|
...date precedes bulletin
|
Date: 2022-05-15:
| 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 |
0 |
1 |
3 |
4 |
1 |
0 |
0 |
| OW |
0 |
34 |
22 |
25 |
51 |
30 |
15 |
0 |
| VODI |
0 |
33 |
18 |
97 |
129 |
100 |
69 |
0 |
| ODI |
0 |
25 |
17 |
80 |
159 |
121 |
146 |
0 |
| CDI |
0 |
42 |
38 |
285 |
521 |
1014 |
347 |
22 |
| VCDI |
0 |
106 |
119 |
336 |
1077 |
5928 |
18407 |
16444 |
|
...date precedes bulletin
|
Date: 2022-05-17:
| 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 |
5 |
3 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
16 |
22 |
37 |
23 |
2 |
0 |
0 |
| VODI |
0 |
15 |
34 |
198 |
170 |
55 |
7 |
0 |
| ODI |
0 |
18 |
41 |
209 |
345 |
284 |
50 |
0 |
| CDI |
0 |
50 |
47 |
320 |
688 |
1343 |
637 |
22 |
| VCDI |
0 |
121 |
77 |
240 |
815 |
2851 |
15307 |
21813 |
|
...date precedes bulletin
|
Date: 2022-05-19:
| 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 |
14 |
7 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
22 |
31 |
100 |
78 |
10 |
0 |
0 |
| VODI |
0 |
24 |
36 |
211 |
261 |
194 |
58 |
0 |
| ODI |
0 |
44 |
46 |
248 |
266 |
200 |
139 |
0 |
| CDI |
0 |
89 |
123 |
379 |
650 |
680 |
1116 |
45 |
| VCDI |
0 |
78 |
186 |
397 |
792 |
2910 |
13197 |
23225 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
12 |
5 |
9 |
1 |
0 |
0 |
0 |
| OW |
0 |
24 |
35 |
117 |
119 |
27 |
1 |
0 |
| VODI |
0 |
23 |
34 |
215 |
251 |
210 |
80 |
0 |
| ODI |
0 |
46 |
53 |
228 |
226 |
147 |
115 |
0 |
| CDI |
0 |
90 |
118 |
377 |
636 |
649 |
957 |
48 |
| VCDI |
0 |
76 |
184 |
399 |
814 |
2961 |
13357 |
23222 |
|
Date: 2022-05-21:
| 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 |
26 |
19 |
30 |
23 |
3 |
0 |
0 |
| OW |
0 |
27 |
33 |
79 |
158 |
80 |
6 |
0 |
| VODI |
0 |
32 |
27 |
273 |
354 |
255 |
63 |
0 |
| ODI |
0 |
35 |
67 |
244 |
340 |
241 |
87 |
0 |
| CDI |
0 |
84 |
102 |
370 |
600 |
594 |
1006 |
46 |
| VCDI |
0 |
203 |
166 |
436 |
686 |
2934 |
14233 |
21904 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
25 |
30 |
40 |
56 |
8 |
0 |
0 |
| OW |
0 |
28 |
23 |
128 |
196 |
126 |
12 |
0 |
| VODI |
0 |
34 |
29 |
223 |
288 |
219 |
56 |
0 |
| ODI |
0 |
35 |
74 |
221 |
281 |
201 |
76 |
0 |
| CDI |
0 |
83 |
97 |
388 |
609 |
581 |
972 |
56 |
| VCDI |
0 |
202 |
161 |
432 |
731 |
2972 |
14279 |
21894 |
|
Date: 2022-05-23:
| 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 |
62 |
18 |
11 |
1 |
0 |
0 |
0 |
| OW |
0 |
68 |
72 |
89 |
23 |
6 |
9 |
0 |
| VODI |
0 |
69 |
94 |
415 |
396 |
122 |
13 |
0 |
| ODI |
0 |
90 |
63 |
341 |
697 |
383 |
88 |
0 |
| CDI |
0 |
129 |
105 |
356 |
641 |
894 |
574 |
1 |
| VCDI |
0 |
95 |
128 |
293 |
462 |
2042 |
16552 |
20464 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
65 |
52 |
76 |
100 |
15 |
7 |
0 |
| OW |
0 |
47 |
68 |
197 |
216 |
131 |
30 |
0 |
| VODI |
0 |
49 |
41 |
205 |
273 |
159 |
113 |
0 |
| ODI |
0 |
69 |
44 |
198 |
263 |
154 |
98 |
0 |
| CDI |
0 |
157 |
86 |
305 |
575 |
544 |
668 |
8 |
| VCDI |
0 |
126 |
189 |
524 |
793 |
2444 |
16320 |
20457 |
|
Date: 2022-05-25:
| 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 |
108 |
40 |
15 |
0 |
0 |
1 |
0 |
| OW |
0 |
107 |
129 |
249 |
94 |
16 |
7 |
0 |
| VODI |
0 |
60 |
67 |
293 |
647 |
123 |
21 |
0 |
| ODI |
0 |
89 |
29 |
216 |
444 |
282 |
88 |
0 |
| CDI |
0 |
123 |
109 |
398 |
754 |
770 |
546 |
3 |
| VCDI |
0 |
81 |
122 |
314 |
547 |
3154 |
19043 |
16777 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
105 |
83 |
132 |
134 |
52 |
8 |
0 |
| OW |
0 |
63 |
69 |
139 |
345 |
77 |
34 |
0 |
| VODI |
0 |
74 |
50 |
185 |
225 |
126 |
88 |
0 |
| ODI |
0 |
66 |
44 |
189 |
263 |
167 |
77 |
0 |
| CDI |
0 |
139 |
80 |
307 |
750 |
500 |
687 |
18 |
| VCDI |
0 |
121 |
170 |
533 |
769 |
3423 |
18812 |
16762 |
|
Date: 2022-05-27:
| 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 |
165 |
107 |
110 |
22 |
3 |
5 |
0 |
| OW |
0 |
90 |
166 |
276 |
166 |
38 |
5 |
0 |
| VODI |
0 |
56 |
37 |
252 |
551 |
172 |
55 |
0 |
| ODI |
0 |
76 |
29 |
142 |
421 |
219 |
109 |
0 |
| CDI |
0 |
104 |
77 |
228 |
667 |
824 |
541 |
2 |
| VCDI |
0 |
79 |
173 |
382 |
534 |
3441 |
24851 |
10691 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
173 |
131 |
215 |
240 |
82 |
26 |
0 |
| OW |
0 |
53 |
61 |
129 |
219 |
80 |
51 |
0 |
| VODI |
0 |
60 |
75 |
192 |
192 |
97 |
87 |
0 |
| ODI |
0 |
44 |
38 |
147 |
332 |
123 |
76 |
0 |
| CDI |
0 |
152 |
62 |
198 |
637 |
695 |
655 |
45 |
| VCDI |
0 |
88 |
222 |
509 |
741 |
3620 |
24671 |
10648 |
|
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