Validation of sea ice concentration - American sector
Bulletin date: 2024-10-03
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-09-27:
| 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 |
21188 |
5827 |
51 |
41 |
19 |
0 |
0 |
0 |
| OW |
29 |
706 |
187 |
239 |
80 |
0 |
0 |
0 |
| VODI |
0 |
144 |
92 |
596 |
400 |
33 |
0 |
0 |
| ODI |
0 |
23 |
15 |
134 |
579 |
409 |
5 |
0 |
| CDI |
3 |
13 |
6 |
32 |
335 |
2214 |
392 |
0 |
| VCDI |
0 |
5 |
0 |
5 |
32 |
2828 |
7125 |
2079 |
|
...date precedes bulletin
|
Date: 2024-09-29:
| 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 |
21026 |
5614 |
62 |
48 |
21 |
7 |
0 |
0 |
| OW |
42 |
651 |
188 |
449 |
84 |
26 |
0 |
0 |
| VODI |
2 |
188 |
79 |
387 |
430 |
226 |
9 |
0 |
| ODI |
0 |
62 |
27 |
120 |
433 |
594 |
38 |
0 |
| CDI |
0 |
15 |
11 |
46 |
203 |
1518 |
967 |
0 |
| VCDI |
0 |
8 |
2 |
13 |
37 |
1965 |
8824 |
1444 |
|
...date precedes bulletin
|
Date: 2024-10-01:
| 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 |
19788 |
6873 |
88 |
105 |
4 |
0 |
0 |
0 |
| OW |
5 |
666 |
147 |
159 |
80 |
15 |
0 |
0 |
| VODI |
0 |
99 |
142 |
496 |
227 |
74 |
0 |
0 |
| ODI |
0 |
6 |
3 |
160 |
528 |
243 |
25 |
0 |
| CDI |
0 |
5 |
1 |
2 |
295 |
1114 |
54 |
0 |
| VCDI |
0 |
2 |
0 |
6 |
37 |
3373 |
9956 |
1088 |
|
...date precedes bulletin
|
Date: 2024-10-03:
| 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 |
20508 |
6305 |
63 |
26 |
1 |
0 |
0 |
0 |
| OW |
39 |
715 |
210 |
195 |
47 |
3 |
0 |
0 |
| VODI |
0 |
150 |
136 |
483 |
204 |
56 |
0 |
0 |
| ODI |
0 |
19 |
16 |
213 |
428 |
202 |
1 |
0 |
| CDI |
0 |
10 |
4 |
46 |
248 |
710 |
213 |
0 |
| VCDI |
0 |
7 |
0 |
13 |
143 |
2382 |
9670 |
2400 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20509 |
6279 |
98 |
48 |
5 |
0 |
0 |
0 |
| OW |
38 |
740 |
173 |
193 |
49 |
4 |
0 |
0 |
| VODI |
0 |
151 |
134 |
464 |
215 |
47 |
0 |
0 |
| ODI |
0 |
18 |
19 |
207 |
391 |
205 |
3 |
0 |
| CDI |
0 |
10 |
5 |
47 |
251 |
687 |
121 |
0 |
| VCDI |
0 |
8 |
0 |
17 |
160 |
2410 |
9760 |
2400 |
|
Date: 2024-10-05:
| 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 |
20636 |
5883 |
77 |
39 |
3 |
0 |
0 |
0 |
| OW |
46 |
791 |
211 |
323 |
43 |
6 |
0 |
0 |
| VODI |
0 |
165 |
99 |
573 |
207 |
82 |
0 |
0 |
| ODI |
0 |
19 |
19 |
281 |
348 |
230 |
15 |
0 |
| CDI |
0 |
19 |
1 |
26 |
322 |
793 |
206 |
0 |
| VCDI |
0 |
11 |
6 |
15 |
147 |
2518 |
7994 |
3712 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20643 |
5917 |
103 |
74 |
8 |
0 |
0 |
0 |
| OW |
39 |
758 |
202 |
324 |
52 |
8 |
0 |
0 |
| VODI |
0 |
161 |
81 |
499 |
195 |
65 |
0 |
0 |
| ODI |
0 |
18 |
19 |
307 |
337 |
231 |
15 |
0 |
| CDI |
0 |
19 |
2 |
35 |
325 |
715 |
80 |
0 |
| VCDI |
0 |
15 |
6 |
18 |
153 |
2610 |
8120 |
3712 |
|
Date: 2024-10-07:
| 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 |
20332 |
6300 |
87 |
36 |
0 |
0 |
0 |
0 |
| OW |
2 |
600 |
282 |
302 |
5 |
0 |
0 |
0 |
| VODI |
0 |
73 |
102 |
814 |
245 |
36 |
0 |
0 |
| ODI |
0 |
12 |
4 |
143 |
532 |
359 |
7 |
0 |
| CDI |
0 |
15 |
3 |
12 |
92 |
1243 |
135 |
0 |
| VCDI |
0 |
5 |
0 |
6 |
117 |
1816 |
8225 |
3924 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20301 |
5940 |
106 |
76 |
9 |
0 |
0 |
0 |
| OW |
33 |
862 |
253 |
306 |
33 |
18 |
0 |
0 |
| VODI |
0 |
138 |
93 |
634 |
185 |
76 |
0 |
0 |
| ODI |
0 |
14 |
18 |
233 |
392 |
248 |
20 |
0 |
| CDI |
0 |
20 |
2 |
39 |
215 |
738 |
145 |
0 |
| VCDI |
0 |
31 |
6 |
25 |
157 |
2374 |
8202 |
3924 |
|
Date: 2024-10-09:
| 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 |
19861 |
6330 |
121 |
103 |
5 |
0 |
0 |
0 |
| OW |
4 |
522 |
214 |
564 |
38 |
2 |
0 |
0 |
| VODI |
3 |
73 |
60 |
681 |
385 |
79 |
2 |
0 |
| ODI |
0 |
11 |
4 |
77 |
562 |
382 |
48 |
0 |
| CDI |
0 |
18 |
6 |
5 |
67 |
1357 |
352 |
0 |
| VCDI |
0 |
8 |
2 |
21 |
42 |
1399 |
8293 |
4165 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19819 |
5702 |
155 |
198 |
26 |
5 |
0 |
0 |
| OW |
44 |
991 |
133 |
325 |
59 |
31 |
0 |
0 |
| VODI |
4 |
183 |
101 |
666 |
205 |
98 |
2 |
0 |
| ODI |
1 |
18 |
9 |
224 |
493 |
248 |
17 |
0 |
| CDI |
0 |
26 |
1 |
13 |
260 |
771 |
167 |
0 |
| VCDI |
0 |
42 |
8 |
25 |
56 |
2066 |
8509 |
4165 |
|
Date: 2024-10-11:
| 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 |
19240 |
6159 |
135 |
81 |
2 |
0 |
0 |
0 |
| OW |
2 |
549 |
216 |
583 |
224 |
2 |
0 |
0 |
| VODI |
6 |
75 |
51 |
329 |
752 |
105 |
4 |
0 |
| ODI |
1 |
17 |
11 |
71 |
482 |
573 |
66 |
0 |
| CDI |
2 |
18 |
6 |
15 |
157 |
1497 |
945 |
0 |
| VCDI |
2 |
18 |
8 |
37 |
92 |
1849 |
7320 |
4164 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19234 |
5821 |
143 |
212 |
15 |
0 |
0 |
0 |
| OW |
6 |
679 |
130 |
275 |
118 |
16 |
0 |
0 |
| VODI |
4 |
237 |
115 |
419 |
464 |
142 |
1 |
0 |
| ODI |
3 |
15 |
25 |
131 |
542 |
307 |
10 |
0 |
| CDI |
4 |
20 |
0 |
23 |
388 |
638 |
228 |
0 |
| VCDI |
2 |
64 |
14 |
56 |
182 |
2923 |
8096 |
4164 |
|
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