Validation of sea ice concentration - American sector
Bulletin date: 2023-07-20
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-07-14:
| 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 |
7328 |
6173 |
316 |
445 |
121 |
4 |
0 |
0 |
| OW |
0 |
55 |
72 |
597 |
89 |
23 |
0 |
0 |
| VODI |
0 |
16 |
12 |
914 |
1327 |
104 |
0 |
0 |
| ODI |
0 |
0 |
4 |
230 |
4975 |
437 |
12 |
0 |
| CDI |
0 |
0 |
0 |
23 |
5925 |
9710 |
297 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
78 |
5726 |
852 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-16:
| 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 |
7593 |
6037 |
371 |
461 |
116 |
7 |
0 |
0 |
| OW |
0 |
87 |
77 |
773 |
208 |
14 |
0 |
0 |
| VODI |
0 |
40 |
42 |
800 |
1864 |
55 |
0 |
0 |
| ODI |
0 |
0 |
8 |
282 |
5367 |
278 |
6 |
0 |
| CDI |
0 |
0 |
0 |
11 |
6011 |
8760 |
247 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
5905 |
441 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-18:
| 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 |
8643 |
5442 |
432 |
409 |
93 |
21 |
0 |
0 |
| OW |
0 |
75 |
93 |
650 |
83 |
1 |
0 |
0 |
| VODI |
0 |
9 |
3 |
1302 |
925 |
45 |
0 |
0 |
| ODI |
0 |
2 |
0 |
182 |
9002 |
1177 |
0 |
0 |
| CDI |
0 |
0 |
1 |
2 |
2332 |
9993 |
517 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
3215 |
1213 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-20:
| 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 |
8832 |
5443 |
412 |
614 |
98 |
20 |
0 |
0 |
| OW |
0 |
87 |
121 |
841 |
130 |
4 |
0 |
0 |
| VODI |
0 |
22 |
3 |
1465 |
1447 |
28 |
0 |
0 |
| ODI |
0 |
2 |
0 |
479 |
8615 |
771 |
13 |
0 |
| CDI |
0 |
2 |
0 |
17 |
2560 |
9569 |
424 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
3432 |
409 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8832 |
5463 |
417 |
682 |
118 |
20 |
0 |
0 |
| OW |
0 |
62 |
113 |
777 |
169 |
3 |
0 |
0 |
| VODI |
0 |
27 |
6 |
1368 |
1367 |
28 |
0 |
0 |
| ODI |
0 |
2 |
0 |
558 |
8703 |
798 |
11 |
0 |
| CDI |
0 |
2 |
0 |
31 |
2494 |
9717 |
428 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
3258 |
407 |
0 |
|
Date: 2023-07-22:
| 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 |
7841 |
6998 |
390 |
468 |
95 |
21 |
0 |
0 |
| OW |
0 |
89 |
127 |
1115 |
193 |
12 |
0 |
0 |
| VODI |
0 |
6 |
1 |
1754 |
2057 |
29 |
1 |
0 |
| ODI |
0 |
3 |
0 |
495 |
7837 |
616 |
6 |
0 |
| CDI |
0 |
0 |
1 |
13 |
2848 |
9308 |
377 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
101 |
2862 |
202 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7841 |
7017 |
399 |
560 |
151 |
20 |
0 |
0 |
| OW |
0 |
65 |
115 |
1073 |
199 |
8 |
0 |
0 |
| VODI |
0 |
11 |
4 |
1612 |
2020 |
31 |
1 |
0 |
| ODI |
0 |
2 |
0 |
566 |
7925 |
762 |
8 |
0 |
| CDI |
0 |
1 |
1 |
34 |
2731 |
9455 |
374 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
105 |
2572 |
203 |
0 |
|
Date: 2023-07-24:
| 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 |
9087 |
6251 |
444 |
463 |
88 |
14 |
0 |
0 |
| OW |
0 |
47 |
151 |
831 |
116 |
1 |
0 |
0 |
| VODI |
0 |
9 |
5 |
3105 |
1254 |
2 |
0 |
0 |
| ODI |
0 |
3 |
0 |
226 |
8709 |
261 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
776 |
12885 |
487 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
18 |
104 |
529 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9087 |
6135 |
414 |
706 |
212 |
14 |
0 |
0 |
| OW |
0 |
123 |
113 |
1175 |
284 |
1 |
0 |
0 |
| VODI |
0 |
49 |
73 |
1871 |
2236 |
48 |
0 |
0 |
| ODI |
0 |
3 |
0 |
812 |
6521 |
1243 |
0 |
0 |
| CDI |
0 |
0 |
0 |
61 |
1613 |
11251 |
770 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
95 |
710 |
246 |
0 |
|
Date: 2023-07-26:
| 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 |
8871 |
6985 |
489 |
545 |
123 |
4 |
0 |
0 |
| OW |
0 |
72 |
155 |
1250 |
191 |
3 |
0 |
0 |
| VODI |
0 |
10 |
0 |
3165 |
2059 |
1 |
0 |
0 |
| ODI |
0 |
2 |
0 |
75 |
7132 |
751 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1816 |
8975 |
2032 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
1065 |
74 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8871 |
6741 |
454 |
934 |
309 |
4 |
0 |
0 |
| OW |
0 |
214 |
129 |
1203 |
354 |
3 |
0 |
0 |
| VODI |
0 |
113 |
61 |
2274 |
2530 |
4 |
0 |
0 |
| ODI |
0 |
1 |
0 |
596 |
5696 |
1408 |
0 |
0 |
| CDI |
0 |
0 |
0 |
28 |
2333 |
9181 |
1996 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
120 |
199 |
110 |
0 |
|
Date: 2023-07-28:
| 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 |
8842 |
7509 |
426 |
705 |
121 |
6 |
0 |
0 |
| OW |
0 |
91 |
165 |
1738 |
218 |
0 |
0 |
0 |
| VODI |
0 |
16 |
2 |
3112 |
2556 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
126 |
6300 |
694 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1924 |
7796 |
1594 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
51 |
1531 |
343 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8842 |
7225 |
447 |
1247 |
286 |
6 |
0 |
0 |
| OW |
0 |
257 |
88 |
1629 |
507 |
0 |
0 |
0 |
| VODI |
0 |
134 |
58 |
2298 |
2550 |
44 |
0 |
0 |
| ODI |
0 |
0 |
0 |
499 |
5092 |
1123 |
0 |
0 |
| CDI |
0 |
0 |
0 |
8 |
2625 |
8137 |
1658 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
110 |
717 |
279 |
0 |
|
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