Validation of sea ice concentration - American sector
Bulletin date: 2023-08-24
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-08-18:
| 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 |
12985 |
9981 |
687 |
701 |
75 |
0 |
0 |
0 |
| OW |
4 |
781 |
369 |
890 |
58 |
1 |
0 |
0 |
| VODI |
0 |
290 |
315 |
2503 |
379 |
5 |
0 |
0 |
| ODI |
0 |
12 |
8 |
1066 |
2895 |
165 |
15 |
0 |
| CDI |
0 |
1 |
1 |
12 |
2980 |
2997 |
231 |
5 |
| VCDI |
0 |
4 |
0 |
0 |
12 |
2585 |
2853 |
0 |
|
...date precedes bulletin
|
Date: 2023-08-20:
| 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 |
13225 |
10039 |
644 |
684 |
27 |
0 |
0 |
0 |
| OW |
5 |
1000 |
412 |
783 |
63 |
0 |
0 |
0 |
| VODI |
0 |
328 |
333 |
2111 |
636 |
31 |
0 |
0 |
| ODI |
0 |
9 |
18 |
943 |
2511 |
493 |
36 |
0 |
| CDI |
0 |
2 |
0 |
53 |
1737 |
3463 |
973 |
0 |
| VCDI |
0 |
4 |
1 |
3 |
9 |
1190 |
3497 |
603 |
|
...date precedes bulletin
|
Date: 2023-08-22:
| 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 |
13413 |
11503 |
898 |
752 |
43 |
0 |
0 |
0 |
| OW |
1 |
358 |
312 |
627 |
40 |
0 |
0 |
0 |
| VODI |
0 |
99 |
266 |
2302 |
367 |
4 |
0 |
0 |
| ODI |
0 |
4 |
4 |
342 |
3047 |
546 |
1 |
0 |
| CDI |
0 |
3 |
1 |
12 |
1350 |
4097 |
614 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
3 |
1385 |
3063 |
405 |
|
...date precedes bulletin
|
Date: 2023-08-24:
| 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 |
13670 |
12001 |
689 |
640 |
39 |
0 |
0 |
0 |
| OW |
0 |
533 |
394 |
686 |
15 |
1 |
0 |
0 |
| VODI |
0 |
108 |
274 |
1830 |
238 |
12 |
0 |
0 |
| ODI |
0 |
2 |
1 |
699 |
2654 |
393 |
1 |
0 |
| CDI |
0 |
0 |
0 |
18 |
1403 |
4317 |
774 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
0 |
1923 |
2547 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13670 |
12049 |
711 |
681 |
45 |
0 |
0 |
0 |
| OW |
0 |
452 |
331 |
581 |
11 |
0 |
0 |
0 |
| VODI |
0 |
141 |
312 |
1830 |
232 |
7 |
0 |
0 |
| ODI |
0 |
2 |
4 |
759 |
2620 |
425 |
1 |
0 |
| CDI |
0 |
0 |
0 |
22 |
1441 |
4250 |
768 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
0 |
1964 |
2553 |
0 |
|
Date: 2023-08-26:
| 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 |
13885 |
11891 |
708 |
664 |
39 |
0 |
0 |
0 |
| OW |
2 |
694 |
492 |
586 |
9 |
1 |
0 |
0 |
| VODI |
0 |
106 |
260 |
1609 |
195 |
18 |
0 |
0 |
| ODI |
0 |
4 |
8 |
698 |
2452 |
429 |
0 |
0 |
| CDI |
0 |
2 |
0 |
15 |
1916 |
4171 |
303 |
0 |
| VCDI |
0 |
2 |
0 |
0 |
40 |
3283 |
1384 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13885 |
11966 |
747 |
735 |
41 |
0 |
0 |
0 |
| OW |
2 |
547 |
361 |
421 |
7 |
0 |
0 |
0 |
| VODI |
0 |
179 |
345 |
1625 |
199 |
10 |
0 |
0 |
| ODI |
0 |
3 |
15 |
774 |
2432 |
478 |
0 |
0 |
| CDI |
0 |
0 |
0 |
17 |
1908 |
4029 |
323 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
64 |
3385 |
1364 |
0 |
|
Date: 2023-08-28:
| 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 |
11857 |
6304 |
9359 |
416 |
28 |
1 |
0 |
0 |
| OW |
0 |
131 |
989 |
303 |
3 |
1 |
0 |
0 |
| VODI |
0 |
8 |
1326 |
893 |
96 |
1 |
0 |
0 |
| ODI |
0 |
1 |
1271 |
1376 |
1111 |
94 |
0 |
0 |
| CDI |
0 |
6 |
547 |
2547 |
1903 |
765 |
11 |
0 |
| VCDI |
0 |
1 |
0 |
184 |
712 |
1792 |
1829 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11857 |
6240 |
9084 |
446 |
30 |
2 |
0 |
0 |
| OW |
0 |
147 |
913 |
245 |
5 |
0 |
0 |
0 |
| VODI |
0 |
56 |
1395 |
685 |
124 |
22 |
0 |
0 |
| ODI |
0 |
1 |
1293 |
1225 |
906 |
167 |
0 |
0 |
| CDI |
0 |
3 |
792 |
2089 |
1459 |
1108 |
680 |
0 |
| VCDI |
0 |
4 |
15 |
1029 |
1329 |
1355 |
1160 |
0 |
|
Date: 2023-08-30:
| 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 |
15793 |
11704 |
585 |
322 |
9 |
0 |
0 |
0 |
| OW |
0 |
690 |
400 |
311 |
3 |
1 |
0 |
0 |
| VODI |
0 |
106 |
319 |
1451 |
157 |
3 |
0 |
0 |
| ODI |
0 |
1 |
9 |
898 |
2539 |
184 |
5 |
0 |
| CDI |
0 |
6 |
0 |
10 |
1445 |
4108 |
181 |
0 |
| VCDI |
0 |
1 |
0 |
0 |
20 |
2322 |
2283 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15793 |
11168 |
525 |
311 |
11 |
1 |
0 |
0 |
| OW |
0 |
744 |
250 |
236 |
6 |
1 |
0 |
0 |
| VODI |
0 |
555 |
449 |
1142 |
191 |
40 |
9 |
0 |
| ODI |
0 |
34 |
89 |
1170 |
1714 |
306 |
32 |
0 |
| CDI |
0 |
4 |
0 |
133 |
2097 |
2975 |
595 |
0 |
| VCDI |
0 |
3 |
0 |
0 |
154 |
3295 |
1833 |
0 |
|
Date: 2023-09-01:
| 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 |
6760 |
3585 |
18092 |
103 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
1518 |
52 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
1803 |
126 |
21 |
0 |
0 |
0 |
| ODI |
0 |
0 |
1818 |
826 |
706 |
30 |
0 |
0 |
| CDI |
0 |
0 |
2728 |
1206 |
1357 |
75 |
0 |
0 |
| VCDI |
0 |
0 |
3915 |
1072 |
73 |
0 |
0 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6760 |
3585 |
17446 |
56 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
1226 |
40 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
2353 |
84 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
2113 |
598 |
321 |
6 |
0 |
0 |
| CDI |
0 |
0 |
3171 |
1123 |
1155 |
94 |
0 |
0 |
| VCDI |
0 |
0 |
3565 |
1484 |
681 |
5 |
0 |
0 |
|
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