Validation of sea ice concentration - American sector
Bulletin date: 2023-08-17
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-08-11:
| 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 |
12077 |
8577 |
536 |
691 |
52 |
0 |
0 |
0 |
| OW |
0 |
253 |
421 |
1417 |
93 |
0 |
0 |
0 |
| VODI |
0 |
11 |
52 |
2986 |
637 |
30 |
0 |
0 |
| ODI |
0 |
0 |
1 |
555 |
3778 |
142 |
0 |
0 |
| CDI |
0 |
0 |
0 |
44 |
1593 |
5439 |
737 |
1 |
| VCDI |
0 |
0 |
0 |
1 |
28 |
594 |
3974 |
1146 |
|
...date precedes bulletin
|
Date: 2023-08-13:
| 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 |
13063 |
7897 |
484 |
658 |
49 |
0 |
0 |
0 |
| OW |
0 |
651 |
461 |
1372 |
76 |
0 |
0 |
0 |
| VODI |
0 |
106 |
161 |
2614 |
576 |
0 |
0 |
0 |
| ODI |
0 |
1 |
1 |
904 |
3183 |
315 |
0 |
0 |
| CDI |
0 |
3 |
3 |
54 |
1330 |
5165 |
795 |
16 |
| VCDI |
0 |
0 |
0 |
4 |
18 |
249 |
3341 |
2316 |
|
...date precedes bulletin
|
Date: 2023-08-15:
| 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 |
13061 |
9193 |
844 |
603 |
28 |
0 |
0 |
0 |
| OW |
0 |
203 |
287 |
1315 |
52 |
0 |
0 |
0 |
| VODI |
0 |
115 |
65 |
2948 |
555 |
11 |
0 |
0 |
| ODI |
0 |
3 |
0 |
375 |
4009 |
168 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
1358 |
4424 |
284 |
51 |
| VCDI |
0 |
0 |
0 |
4 |
14 |
375 |
4058 |
1460 |
|
...date precedes bulletin
|
Date: 2023-08-17:
| 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 |
13991 |
8991 |
705 |
582 |
6 |
0 |
0 |
0 |
| OW |
24 |
425 |
368 |
1187 |
16 |
0 |
0 |
0 |
| VODI |
0 |
218 |
93 |
2890 |
316 |
0 |
0 |
0 |
| ODI |
0 |
11 |
4 |
777 |
3353 |
127 |
1 |
0 |
| CDI |
0 |
0 |
1 |
3 |
1852 |
4182 |
72 |
9 |
| VCDI |
0 |
0 |
0 |
4 |
19 |
849 |
4152 |
638 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14015 |
8918 |
685 |
653 |
7 |
0 |
0 |
0 |
| OW |
0 |
550 |
338 |
959 |
19 |
0 |
0 |
0 |
| VODI |
0 |
167 |
144 |
2849 |
312 |
0 |
0 |
0 |
| ODI |
0 |
10 |
3 |
973 |
3305 |
122 |
1 |
0 |
| CDI |
0 |
0 |
1 |
5 |
1898 |
4098 |
94 |
5 |
| VCDI |
0 |
0 |
0 |
4 |
21 |
938 |
4130 |
642 |
|
Date: 2023-08-19:
| 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 |
12773 |
10569 |
618 |
562 |
4 |
0 |
0 |
0 |
| OW |
41 |
747 |
329 |
1062 |
32 |
0 |
0 |
0 |
| VODI |
4 |
186 |
148 |
2694 |
394 |
7 |
0 |
0 |
| ODI |
0 |
7 |
0 |
817 |
3135 |
115 |
28 |
3 |
| CDI |
0 |
0 |
0 |
1 |
2115 |
3465 |
616 |
71 |
| VCDI |
0 |
4 |
0 |
0 |
13 |
457 |
2739 |
2110 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12793 |
10562 |
641 |
705 |
16 |
0 |
0 |
0 |
| OW |
22 |
741 |
283 |
816 |
23 |
0 |
0 |
0 |
| VODI |
3 |
199 |
171 |
2605 |
384 |
6 |
0 |
0 |
| ODI |
0 |
7 |
0 |
1009 |
3096 |
132 |
26 |
3 |
| CDI |
0 |
0 |
0 |
1 |
2159 |
3432 |
659 |
63 |
| VCDI |
0 |
4 |
0 |
0 |
15 |
474 |
2698 |
2118 |
|
Date: 2023-08-21:
| 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 |
13504 |
11450 |
688 |
492 |
1 |
0 |
0 |
0 |
| OW |
17 |
120 |
331 |
938 |
20 |
0 |
0 |
0 |
| VODI |
0 |
15 |
6 |
3040 |
275 |
4 |
0 |
0 |
| ODI |
0 |
1 |
0 |
106 |
3785 |
187 |
0 |
0 |
| CDI |
0 |
0 |
0 |
5 |
763 |
4580 |
265 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
9 |
824 |
3276 |
1160 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13366 |
10745 |
518 |
538 |
9 |
0 |
0 |
0 |
| OW |
108 |
653 |
290 |
700 |
18 |
0 |
0 |
0 |
| VODI |
47 |
182 |
213 |
2399 |
454 |
14 |
0 |
0 |
| ODI |
0 |
6 |
4 |
931 |
2718 |
299 |
27 |
0 |
| CDI |
0 |
0 |
0 |
13 |
1643 |
4123 |
760 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
11 |
1159 |
2754 |
1160 |
|
Date: 2023-08-23:
| 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 |
15126 |
10331 |
755 |
651 |
0 |
0 |
0 |
0 |
| OW |
3 |
267 |
315 |
887 |
8 |
0 |
0 |
0 |
| VODI |
0 |
15 |
57 |
2454 |
187 |
6 |
0 |
0 |
| ODI |
0 |
0 |
1 |
314 |
3252 |
247 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
1030 |
4195 |
1195 |
0 |
| VCDI |
0 |
3 |
1 |
0 |
12 |
939 |
3311 |
301 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14997 |
9423 |
549 |
517 |
3 |
0 |
0 |
0 |
| OW |
97 |
763 |
264 |
650 |
3 |
0 |
0 |
0 |
| VODI |
35 |
417 |
293 |
2209 |
286 |
13 |
0 |
0 |
| ODI |
0 |
10 |
22 |
925 |
2317 |
354 |
8 |
0 |
| CDI |
0 |
0 |
0 |
8 |
1876 |
3758 |
1728 |
29 |
| VCDI |
0 |
3 |
1 |
0 |
4 |
1262 |
2770 |
272 |
|
Date: 2023-08-25:
| 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 |
15663 |
10445 |
581 |
451 |
0 |
0 |
0 |
0 |
| OW |
3 |
407 |
483 |
842 |
4 |
1 |
0 |
0 |
| VODI |
0 |
8 |
65 |
1979 |
190 |
26 |
0 |
0 |
| ODI |
0 |
0 |
1 |
490 |
2788 |
403 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
1317 |
4351 |
770 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
1 |
1953 |
2598 |
39 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15548 |
9357 |
422 |
484 |
3 |
0 |
0 |
0 |
| OW |
91 |
1058 |
320 |
538 |
4 |
0 |
0 |
0 |
| VODI |
27 |
426 |
359 |
1918 |
317 |
16 |
0 |
0 |
| ODI |
0 |
19 |
29 |
802 |
2023 |
453 |
14 |
0 |
| CDI |
0 |
4 |
0 |
23 |
1953 |
4764 |
1286 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1501 |
2068 |
39 |
|
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