Validation of sea ice concentration - American sector
Bulletin date: 2024-09-19
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-09-13:
| 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 |
21228 |
5538 |
49 |
7 |
5 |
0 |
0 |
0 |
| OW |
137 |
1560 |
333 |
227 |
43 |
4 |
0 |
0 |
| VODI |
0 |
171 |
216 |
1174 |
296 |
12 |
1 |
0 |
| ODI |
0 |
34 |
17 |
338 |
1551 |
419 |
11 |
0 |
| CDI |
0 |
26 |
9 |
38 |
626 |
4045 |
1131 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
20 |
2659 |
3938 |
0 |
|
...date precedes bulletin
|
Date: 2024-09-15:
| 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 |
19342 |
7179 |
191 |
161 |
9 |
0 |
0 |
0 |
| OW |
109 |
1082 |
260 |
463 |
172 |
12 |
0 |
0 |
| VODI |
0 |
157 |
141 |
767 |
568 |
217 |
2 |
0 |
| ODI |
0 |
29 |
8 |
106 |
892 |
783 |
79 |
0 |
| CDI |
0 |
22 |
6 |
33 |
290 |
4500 |
2331 |
0 |
| VCDI |
0 |
6 |
0 |
2 |
8 |
2809 |
3130 |
0 |
|
...date precedes bulletin
|
Date: 2024-09-17:
| 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 |
21218 |
6161 |
142 |
77 |
0 |
0 |
0 |
0 |
| OW |
63 |
729 |
289 |
515 |
97 |
1 |
0 |
0 |
| VODI |
0 |
43 |
44 |
605 |
570 |
119 |
2 |
0 |
| ODI |
0 |
4 |
4 |
158 |
982 |
1212 |
69 |
0 |
| CDI |
0 |
15 |
0 |
16 |
95 |
2550 |
2313 |
0 |
| VCDI |
0 |
1 |
0 |
0 |
0 |
1651 |
6101 |
20 |
|
...date precedes bulletin
|
Date: 2024-09-19:
| 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 |
20753 |
6273 |
197 |
190 |
13 |
0 |
0 |
0 |
| OW |
130 |
548 |
174 |
581 |
275 |
41 |
0 |
0 |
| VODI |
7 |
64 |
44 |
269 |
680 |
403 |
2 |
0 |
| ODI |
0 |
19 |
11 |
77 |
822 |
1414 |
51 |
0 |
| CDI |
0 |
23 |
9 |
26 |
207 |
2331 |
1005 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
3022 |
5643 |
555 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20767 |
6310 |
201 |
238 |
27 |
1 |
0 |
0 |
| OW |
116 |
519 |
176 |
567 |
231 |
41 |
0 |
0 |
| VODI |
7 |
52 |
37 |
247 |
722 |
353 |
14 |
0 |
| ODI |
0 |
18 |
10 |
60 |
764 |
1411 |
43 |
0 |
| CDI |
0 |
28 |
11 |
31 |
249 |
2312 |
980 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
11 |
3093 |
5664 |
555 |
|
Date: 2024-09-21:
| 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 |
20585 |
6082 |
192 |
301 |
16 |
0 |
0 |
0 |
| OW |
119 |
553 |
206 |
752 |
184 |
13 |
0 |
0 |
| VODI |
5 |
70 |
25 |
395 |
842 |
295 |
4 |
0 |
| ODI |
0 |
19 |
10 |
53 |
824 |
1048 |
26 |
0 |
| CDI |
0 |
26 |
17 |
37 |
230 |
2828 |
801 |
0 |
| VCDI |
0 |
5 |
0 |
12 |
29 |
1518 |
7132 |
612 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20602 |
6100 |
215 |
317 |
36 |
0 |
0 |
0 |
| OW |
103 |
526 |
182 |
706 |
188 |
13 |
0 |
0 |
| VODI |
4 |
75 |
26 |
420 |
762 |
294 |
12 |
0 |
| ODI |
0 |
21 |
8 |
58 |
783 |
911 |
14 |
0 |
| CDI |
0 |
27 |
17 |
30 |
321 |
2880 |
810 |
0 |
| VCDI |
0 |
6 |
2 |
19 |
35 |
1604 |
7127 |
612 |
|
Date: 2024-09-23:
| 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 |
20513 |
6502 |
133 |
100 |
8 |
0 |
0 |
0 |
| OW |
19 |
463 |
197 |
387 |
51 |
0 |
0 |
0 |
| VODI |
1 |
61 |
81 |
758 |
341 |
20 |
0 |
0 |
| ODI |
0 |
15 |
9 |
124 |
1003 |
342 |
3 |
0 |
| CDI |
0 |
7 |
0 |
10 |
367 |
3184 |
620 |
0 |
| VCDI |
0 |
5 |
0 |
0 |
10 |
974 |
8206 |
1352 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20451 |
6240 |
151 |
187 |
24 |
2 |
0 |
0 |
| OW |
81 |
656 |
203 |
673 |
192 |
17 |
0 |
0 |
| VODI |
1 |
99 |
49 |
463 |
690 |
363 |
8 |
0 |
| ODI |
0 |
23 |
6 |
33 |
690 |
811 |
27 |
0 |
| CDI |
0 |
29 |
11 |
20 |
159 |
2406 |
1168 |
0 |
| VCDI |
0 |
6 |
0 |
3 |
25 |
921 |
7626 |
1352 |
|
Date: 2024-09-25:
| 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 |
21209 |
5837 |
90 |
57 |
18 |
0 |
0 |
0 |
| OW |
25 |
613 |
185 |
216 |
71 |
11 |
0 |
0 |
| VODI |
0 |
82 |
99 |
675 |
275 |
73 |
0 |
0 |
| ODI |
0 |
13 |
9 |
142 |
661 |
437 |
2 |
0 |
| CDI |
2 |
7 |
3 |
11 |
240 |
2507 |
721 |
0 |
| VCDI |
0 |
8 |
1 |
12 |
21 |
1266 |
8255 |
2012 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21153 |
5502 |
129 |
127 |
26 |
0 |
0 |
0 |
| OW |
81 |
827 |
179 |
416 |
198 |
73 |
0 |
0 |
| VODI |
0 |
171 |
65 |
493 |
514 |
382 |
47 |
0 |
| ODI |
0 |
25 |
4 |
39 |
438 |
818 |
9 |
0 |
| CDI |
2 |
26 |
9 |
22 |
74 |
2086 |
1130 |
0 |
| VCDI |
0 |
9 |
1 |
16 |
36 |
935 |
7792 |
2012 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21177 |
5181 |
63 |
73 |
86 |
0 |
0 |
0 |
| OW |
40 |
1090 |
146 |
289 |
135 |
61 |
3 |
0 |
| VODI |
0 |
368 |
111 |
481 |
414 |
239 |
60 |
0 |
| ODI |
0 |
38 |
12 |
166 |
550 |
495 |
24 |
0 |
| CDI |
3 |
29 |
13 |
28 |
239 |
2793 |
563 |
0 |
| VCDI |
0 |
12 |
6 |
10 |
21 |
1896 |
6872 |
2079 |
|
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