Validation of sea ice concentration - American sector
Bulletin date: 2024-05-16
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-05-10:
| 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 |
20 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
64 |
4 |
5 |
1 |
3 |
0 |
0 |
| VODI |
0 |
112 |
9 |
22 |
24 |
10 |
0 |
0 |
| ODI |
0 |
96 |
35 |
81 |
86 |
59 |
17 |
0 |
| CDI |
0 |
108 |
46 |
241 |
691 |
641 |
666 |
6 |
| VCDI |
0 |
73 |
66 |
330 |
707 |
3589 |
17334 |
20720 |
|
...date precedes bulletin
|
Date: 2024-05-12:
| 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 |
24 |
3 |
6 |
2 |
2 |
0 |
0 |
| VODI |
0 |
120 |
20 |
25 |
24 |
5 |
5 |
0 |
| ODI |
0 |
139 |
38 |
61 |
87 |
66 |
35 |
0 |
| CDI |
0 |
136 |
78 |
376 |
817 |
1055 |
1253 |
0 |
| VCDI |
0 |
98 |
38 |
285 |
634 |
2641 |
19390 |
18403 |
|
...date precedes bulletin
|
Date: 2024-05-14:
| 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 |
38 |
2 |
8 |
1 |
0 |
0 |
0 |
| OW |
0 |
307 |
19 |
29 |
22 |
4 |
0 |
0 |
| VODI |
0 |
170 |
40 |
90 |
66 |
20 |
0 |
0 |
| ODI |
0 |
103 |
73 |
123 |
164 |
87 |
9 |
0 |
| CDI |
0 |
103 |
88 |
395 |
862 |
1071 |
390 |
0 |
| VCDI |
0 |
9 |
9 |
88 |
404 |
2039 |
22342 |
16691 |
|
...date precedes bulletin
|
Date: 2024-05-16:
| 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 |
174 |
6 |
8 |
1 |
0 |
0 |
0 |
| OW |
0 |
295 |
29 |
46 |
41 |
0 |
0 |
0 |
| VODI |
0 |
155 |
33 |
84 |
69 |
23 |
3 |
0 |
| ODI |
0 |
113 |
42 |
109 |
101 |
32 |
14 |
0 |
| CDI |
0 |
188 |
143 |
412 |
805 |
705 |
420 |
0 |
| VCDI |
0 |
22 |
30 |
130 |
431 |
2886 |
24171 |
14145 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
196 |
6 |
13 |
3 |
0 |
0 |
0 |
| OW |
0 |
259 |
30 |
48 |
50 |
2 |
0 |
0 |
| VODI |
0 |
159 |
29 |
91 |
66 |
26 |
3 |
0 |
| ODI |
0 |
106 |
41 |
94 |
104 |
30 |
13 |
0 |
| CDI |
0 |
208 |
148 |
425 |
800 |
699 |
420 |
0 |
| VCDI |
0 |
19 |
29 |
118 |
425 |
2889 |
24172 |
14145 |
|
Date: 2024-05-18:
| 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 |
228 |
6 |
9 |
2 |
0 |
0 |
0 |
| OW |
0 |
280 |
26 |
56 |
41 |
2 |
0 |
0 |
| VODI |
0 |
156 |
48 |
92 |
71 |
22 |
0 |
0 |
| ODI |
0 |
130 |
33 |
136 |
126 |
44 |
16 |
0 |
| CDI |
0 |
271 |
132 |
445 |
682 |
896 |
462 |
0 |
| VCDI |
0 |
26 |
37 |
174 |
490 |
2572 |
26695 |
11460 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
278 |
9 |
14 |
4 |
0 |
0 |
0 |
| OW |
0 |
235 |
28 |
57 |
49 |
2 |
0 |
0 |
| VODI |
0 |
147 |
42 |
93 |
75 |
26 |
1 |
0 |
| ODI |
0 |
115 |
30 |
123 |
114 |
44 |
17 |
0 |
| CDI |
0 |
294 |
147 |
458 |
696 |
860 |
459 |
0 |
| VCDI |
0 |
22 |
26 |
167 |
474 |
2604 |
26696 |
11460 |
|
Date: 2024-05-20:
| 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 |
522 |
14 |
21 |
3 |
0 |
0 |
0 |
| OW |
0 |
582 |
31 |
51 |
14 |
3 |
0 |
0 |
| VODI |
0 |
280 |
111 |
231 |
98 |
5 |
3 |
0 |
| ODI |
0 |
144 |
72 |
236 |
337 |
83 |
5 |
0 |
| CDI |
0 |
212 |
117 |
440 |
864 |
1379 |
522 |
0 |
| VCDI |
0 |
10 |
8 |
90 |
486 |
3822 |
21793 |
13277 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
415 |
9 |
13 |
6 |
0 |
0 |
0 |
| OW |
0 |
270 |
23 |
43 |
29 |
2 |
0 |
0 |
| VODI |
0 |
231 |
38 |
78 |
71 |
20 |
1 |
0 |
| ODI |
0 |
199 |
45 |
147 |
129 |
68 |
7 |
0 |
| CDI |
0 |
451 |
160 |
517 |
793 |
909 |
546 |
0 |
| VCDI |
0 |
184 |
78 |
271 |
774 |
4293 |
21769 |
13277 |
|
Date: 2024-05-22:
| 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 |
680 |
23 |
29 |
10 |
2 |
0 |
0 |
| OW |
0 |
596 |
52 |
80 |
29 |
6 |
0 |
0 |
| VODI |
0 |
289 |
92 |
205 |
89 |
19 |
4 |
0 |
| ODI |
0 |
145 |
72 |
183 |
256 |
106 |
30 |
0 |
| CDI |
0 |
228 |
129 |
521 |
730 |
1278 |
523 |
1 |
| VCDI |
0 |
115 |
45 |
185 |
430 |
3147 |
24054 |
11483 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
513 |
19 |
25 |
7 |
2 |
0 |
0 |
| OW |
0 |
273 |
28 |
45 |
23 |
7 |
0 |
0 |
| VODI |
0 |
266 |
55 |
114 |
76 |
24 |
4 |
0 |
| ODI |
0 |
227 |
56 |
143 |
153 |
55 |
30 |
0 |
| CDI |
0 |
413 |
163 |
593 |
740 |
1305 |
798 |
1 |
| VCDI |
0 |
361 |
92 |
283 |
545 |
3165 |
23779 |
11483 |
|
Date: 2024-05-24:
| 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 |
911 |
21 |
22 |
9 |
5 |
0 |
0 |
| OW |
0 |
533 |
51 |
93 |
21 |
5 |
1 |
0 |
| VODI |
0 |
328 |
99 |
201 |
71 |
18 |
7 |
0 |
| ODI |
0 |
190 |
77 |
212 |
218 |
72 |
18 |
0 |
| CDI |
0 |
288 |
141 |
562 |
719 |
1161 |
786 |
3 |
| VCDI |
0 |
154 |
67 |
200 |
381 |
2079 |
25361 |
10781 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
632 |
20 |
39 |
11 |
2 |
0 |
0 |
| OW |
0 |
270 |
17 |
53 |
16 |
2 |
0 |
0 |
| VODI |
0 |
313 |
56 |
96 |
62 |
22 |
11 |
0 |
| ODI |
0 |
246 |
77 |
179 |
122 |
53 |
77 |
0 |
| CDI |
0 |
450 |
150 |
582 |
662 |
1095 |
1358 |
1 |
| VCDI |
0 |
493 |
136 |
341 |
546 |
2166 |
24727 |
10783 |
|
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