Validation of sea ice concentration - American sector
Bulletin date: 2023-09-21
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-09-15:
| 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 |
21979 |
6978 |
75 |
45 |
5 |
0 |
0 |
0 |
| OW |
31 |
1376 |
255 |
146 |
52 |
10 |
0 |
0 |
| VODI |
0 |
263 |
223 |
774 |
325 |
77 |
3 |
0 |
| ODI |
0 |
12 |
39 |
412 |
1638 |
1139 |
12 |
0 |
| CDI |
0 |
0 |
0 |
152 |
582 |
3509 |
1207 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
2643 |
1898 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-17:
| 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 |
23018 |
6003 |
48 |
43 |
0 |
0 |
0 |
0 |
| OW |
23 |
1370 |
219 |
210 |
9 |
0 |
0 |
0 |
| VODI |
0 |
250 |
266 |
907 |
240 |
59 |
3 |
0 |
| ODI |
0 |
15 |
44 |
574 |
1242 |
1352 |
11 |
0 |
| CDI |
0 |
0 |
3 |
280 |
530 |
2870 |
852 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
33 |
2299 |
3090 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-19:
| 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 |
22443 |
7062 |
165 |
87 |
0 |
0 |
0 |
0 |
| OW |
23 |
931 |
224 |
193 |
20 |
0 |
0 |
0 |
| VODI |
0 |
201 |
276 |
900 |
179 |
9 |
0 |
0 |
| ODI |
0 |
3 |
13 |
638 |
1513 |
214 |
5 |
0 |
| CDI |
0 |
6 |
1 |
18 |
778 |
3257 |
201 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
1 |
3686 |
2817 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-21:
| 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 |
22485 |
6903 |
131 |
51 |
0 |
0 |
0 |
0 |
| OW |
40 |
952 |
222 |
241 |
30 |
0 |
0 |
0 |
| VODI |
0 |
168 |
259 |
782 |
317 |
95 |
0 |
0 |
| ODI |
0 |
3 |
13 |
422 |
1491 |
504 |
10 |
0 |
| CDI |
0 |
6 |
3 |
13 |
622 |
3326 |
721 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
3064 |
2990 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22487 |
7034 |
143 |
47 |
0 |
0 |
0 |
0 |
| OW |
38 |
825 |
214 |
253 |
31 |
1 |
0 |
0 |
| VODI |
0 |
165 |
257 |
808 |
391 |
106 |
0 |
0 |
| ODI |
0 |
2 |
11 |
380 |
1409 |
540 |
22 |
0 |
| CDI |
0 |
6 |
3 |
21 |
631 |
3392 |
869 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
2950 |
2830 |
0 |
|
Date: 2023-09-23:
| 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 |
22963 |
6222 |
59 |
31 |
0 |
0 |
0 |
0 |
| OW |
29 |
984 |
221 |
295 |
21 |
0 |
0 |
0 |
| VODI |
0 |
180 |
187 |
820 |
427 |
29 |
2 |
0 |
| ODI |
0 |
11 |
32 |
444 |
1127 |
475 |
18 |
0 |
| CDI |
0 |
6 |
1 |
31 |
549 |
3397 |
868 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
2990 |
3446 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22965 |
6305 |
86 |
36 |
0 |
0 |
0 |
0 |
| OW |
27 |
895 |
190 |
288 |
21 |
0 |
0 |
0 |
| VODI |
0 |
184 |
194 |
835 |
485 |
44 |
3 |
0 |
| ODI |
0 |
12 |
28 |
404 |
1049 |
494 |
28 |
0 |
| CDI |
0 |
7 |
2 |
58 |
570 |
3581 |
891 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
2772 |
3412 |
0 |
|
Date: 2023-09-25:
| 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 |
21487 |
6993 |
215 |
212 |
8 |
0 |
0 |
0 |
| OW |
3 |
501 |
240 |
271 |
52 |
0 |
0 |
0 |
| VODI |
0 |
55 |
112 |
705 |
338 |
0 |
0 |
0 |
| ODI |
0 |
6 |
1 |
200 |
996 |
51 |
0 |
0 |
| CDI |
0 |
4 |
2 |
16 |
680 |
1754 |
65 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
5544 |
5346 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21482 |
6810 |
222 |
263 |
63 |
0 |
0 |
0 |
| OW |
8 |
591 |
204 |
433 |
380 |
7 |
0 |
0 |
| VODI |
0 |
145 |
125 |
456 |
670 |
103 |
0 |
0 |
| ODI |
0 |
6 |
17 |
226 |
740 |
662 |
28 |
0 |
| CDI |
0 |
7 |
2 |
26 |
230 |
2454 |
1294 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
4123 |
4089 |
0 |
|
Date: 2023-09-27:
| 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 |
21825 |
6656 |
132 |
148 |
22 |
0 |
0 |
0 |
| OW |
2 |
651 |
229 |
249 |
43 |
0 |
0 |
0 |
| VODI |
0 |
73 |
125 |
643 |
224 |
22 |
0 |
0 |
| ODI |
0 |
6 |
7 |
285 |
693 |
217 |
0 |
0 |
| CDI |
0 |
2 |
1 |
43 |
638 |
857 |
827 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
130 |
3544 |
7569 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21827 |
6387 |
120 |
193 |
22 |
0 |
0 |
0 |
| OW |
0 |
812 |
213 |
468 |
123 |
2 |
0 |
0 |
| VODI |
0 |
175 |
144 |
523 |
530 |
28 |
1 |
0 |
| ODI |
0 |
13 |
16 |
173 |
678 |
339 |
37 |
0 |
| CDI |
0 |
1 |
1 |
12 |
388 |
1166 |
805 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
9 |
3105 |
7553 |
0 |
|
Date: 2023-09-29:
| 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 |
21347 |
7212 |
135 |
118 |
10 |
0 |
0 |
0 |
| OW |
7 |
673 |
204 |
253 |
66 |
14 |
0 |
0 |
| VODI |
0 |
114 |
159 |
670 |
177 |
14 |
0 |
0 |
| ODI |
0 |
9 |
14 |
336 |
805 |
42 |
1 |
0 |
| CDI |
0 |
0 |
1 |
56 |
687 |
1078 |
147 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
66 |
2805 |
8586 |
60 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21341 |
6930 |
161 |
229 |
38 |
0 |
0 |
0 |
| OW |
13 |
788 |
158 |
348 |
157 |
4 |
0 |
0 |
| VODI |
0 |
246 |
141 |
401 |
453 |
69 |
0 |
0 |
| ODI |
0 |
44 |
51 |
305 |
385 |
200 |
32 |
0 |
| CDI |
0 |
0 |
2 |
121 |
441 |
703 |
315 |
0 |
| VCDI |
0 |
0 |
0 |
29 |
337 |
2977 |
8387 |
60 |
|
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