Validation of sea ice concentration - American sector
Bulletin date: 2023-10-12
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-10-06:
| 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 |
19561 |
6553 |
414 |
733 |
219 |
48 |
8 |
0 |
| OW |
0 |
190 |
109 |
591 |
679 |
213 |
10 |
0 |
| VODI |
0 |
11 |
4 |
119 |
584 |
525 |
31 |
0 |
| ODI |
0 |
2 |
0 |
43 |
256 |
570 |
75 |
0 |
| CDI |
0 |
0 |
0 |
8 |
177 |
872 |
462 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
13 |
1150 |
10699 |
937 |
|
...date precedes bulletin
|
Date: 2023-10-08:
| 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 |
18692 |
6372 |
368 |
627 |
297 |
67 |
0 |
0 |
| OW |
0 |
487 |
142 |
476 |
649 |
209 |
0 |
0 |
| VODI |
0 |
8 |
13 |
112 |
735 |
682 |
37 |
0 |
| ODI |
0 |
7 |
2 |
15 |
151 |
610 |
215 |
0 |
| CDI |
0 |
0 |
0 |
0 |
21 |
534 |
740 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
379 |
9228 |
3985 |
|
...date precedes bulletin
|
Date: 2023-10-10:
| 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 |
17806 |
6680 |
354 |
670 |
194 |
10 |
0 |
0 |
| OW |
1 |
66 |
88 |
459 |
266 |
48 |
2 |
0 |
| VODI |
0 |
10 |
25 |
276 |
428 |
185 |
6 |
0 |
| ODI |
0 |
1 |
4 |
44 |
572 |
428 |
31 |
0 |
| CDI |
0 |
0 |
0 |
1 |
344 |
1029 |
386 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
425 |
8670 |
6357 |
|
...date precedes bulletin
|
Date: 2023-10-12:
| 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 |
17703 |
6264 |
303 |
563 |
164 |
34 |
0 |
0 |
| OW |
1 |
257 |
99 |
430 |
359 |
45 |
5 |
0 |
| VODI |
0 |
87 |
56 |
178 |
504 |
143 |
10 |
0 |
| ODI |
0 |
6 |
4 |
70 |
367 |
442 |
18 |
0 |
| CDI |
0 |
4 |
0 |
3 |
83 |
1109 |
358 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
13 |
1163 |
7858 |
7163 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17664 |
6340 |
334 |
666 |
224 |
57 |
2 |
0 |
| OW |
40 |
206 |
75 |
354 |
301 |
35 |
7 |
0 |
| VODI |
0 |
64 |
52 |
186 |
496 |
145 |
6 |
0 |
| ODI |
0 |
3 |
1 |
37 |
375 |
477 |
15 |
0 |
| CDI |
0 |
5 |
0 |
1 |
86 |
1044 |
334 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
8 |
1178 |
7885 |
7163 |
|
Date: 2023-10-14:
| 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 |
16791 |
6357 |
255 |
420 |
214 |
59 |
0 |
0 |
| OW |
0 |
309 |
100 |
323 |
654 |
157 |
1 |
0 |
| VODI |
0 |
115 |
73 |
167 |
404 |
329 |
22 |
0 |
| ODI |
0 |
23 |
22 |
90 |
221 |
388 |
43 |
0 |
| CDI |
0 |
1 |
4 |
33 |
238 |
755 |
168 |
0 |
| VCDI |
0 |
0 |
0 |
18 |
108 |
1849 |
7737 |
7418 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16791 |
6437 |
294 |
482 |
298 |
106 |
0 |
0 |
| OW |
0 |
287 |
82 |
280 |
523 |
124 |
2 |
0 |
| VODI |
0 |
70 |
63 |
181 |
442 |
288 |
15 |
0 |
| ODI |
0 |
10 |
14 |
66 |
248 |
360 |
38 |
0 |
| CDI |
0 |
1 |
1 |
25 |
230 |
749 |
175 |
0 |
| VCDI |
0 |
0 |
0 |
17 |
98 |
1910 |
7741 |
7418 |
|
Date: 2023-10-16:
| 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 |
15974 |
6721 |
308 |
433 |
114 |
28 |
0 |
0 |
| OW |
0 |
289 |
91 |
295 |
190 |
29 |
4 |
0 |
| VODI |
0 |
25 |
54 |
290 |
357 |
105 |
4 |
0 |
| ODI |
0 |
0 |
4 |
116 |
693 |
414 |
21 |
0 |
| CDI |
0 |
0 |
0 |
25 |
521 |
1454 |
158 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
120 |
1515 |
9255 |
6257 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15974 |
6453 |
281 |
572 |
359 |
102 |
5 |
0 |
| OW |
0 |
379 |
95 |
209 |
348 |
198 |
10 |
0 |
| VODI |
0 |
167 |
49 |
140 |
435 |
583 |
35 |
0 |
| ODI |
0 |
34 |
25 |
119 |
231 |
255 |
57 |
0 |
| CDI |
0 |
2 |
7 |
95 |
316 |
580 |
184 |
0 |
| VCDI |
0 |
0 |
0 |
26 |
306 |
1827 |
9151 |
6257 |
|
Date: 2023-10-18:
| 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 |
14988 |
6805 |
312 |
605 |
193 |
61 |
4 |
0 |
| OW |
0 |
225 |
139 |
394 |
338 |
61 |
22 |
0 |
| VODI |
0 |
41 |
48 |
239 |
430 |
156 |
21 |
0 |
| ODI |
0 |
0 |
0 |
41 |
401 |
488 |
46 |
0 |
| CDI |
0 |
0 |
0 |
1 |
187 |
1248 |
493 |
1 |
| VCDI |
0 |
0 |
0 |
3 |
41 |
1335 |
7208 |
9291 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14986 |
6475 |
309 |
650 |
403 |
131 |
21 |
0 |
| OW |
2 |
359 |
68 |
316 |
412 |
191 |
37 |
0 |
| VODI |
0 |
207 |
88 |
159 |
229 |
626 |
103 |
0 |
| ODI |
0 |
30 |
32 |
97 |
170 |
389 |
117 |
0 |
| CDI |
0 |
0 |
2 |
57 |
206 |
363 |
293 |
4 |
| VCDI |
0 |
0 |
0 |
4 |
170 |
1649 |
7223 |
9288 |
|
Date: 2023-10-20:
| 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 |
13968 |
6993 |
339 |
558 |
337 |
57 |
0 |
0 |
| OW |
6 |
276 |
78 |
246 |
369 |
182 |
1 |
0 |
| VODI |
0 |
67 |
58 |
153 |
541 |
326 |
10 |
0 |
| ODI |
0 |
0 |
4 |
34 |
223 |
460 |
62 |
0 |
| CDI |
0 |
0 |
2 |
7 |
126 |
899 |
166 |
0 |
| VCDI |
0 |
1 |
3 |
7 |
82 |
3032 |
11082 |
5111 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13972 |
6536 |
273 |
452 |
415 |
259 |
0 |
0 |
| OW |
2 |
422 |
88 |
219 |
447 |
336 |
4 |
0 |
| VODI |
0 |
264 |
64 |
188 |
293 |
641 |
35 |
0 |
| ODI |
0 |
103 |
40 |
94 |
143 |
503 |
175 |
0 |
| CDI |
0 |
11 |
14 |
44 |
218 |
374 |
192 |
0 |
| VCDI |
0 |
1 |
5 |
8 |
162 |
2843 |
10915 |
5111 |
|
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