Validation of sea ice concentration - American sector
Bulletin date: 2023-06-01
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-05-26:
| 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 |
0 |
833 |
136 |
97 |
22 |
11 |
2 |
0 |
| OW |
0 |
329 |
119 |
230 |
105 |
27 |
5 |
0 |
| VODI |
0 |
175 |
89 |
266 |
383 |
161 |
12 |
0 |
| ODI |
0 |
86 |
48 |
140 |
292 |
342 |
116 |
0 |
| CDI |
0 |
89 |
50 |
201 |
388 |
1094 |
821 |
3 |
| VCDI |
0 |
41 |
27 |
133 |
289 |
3415 |
20780 |
14509 |
|
...date precedes bulletin
|
Date: 2023-05-28:
| 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 |
0 |
883 |
146 |
134 |
44 |
12 |
2 |
0 |
| OW |
0 |
314 |
134 |
274 |
165 |
34 |
0 |
0 |
| VODI |
0 |
173 |
70 |
312 |
395 |
154 |
35 |
0 |
| ODI |
0 |
106 |
53 |
141 |
263 |
334 |
108 |
0 |
| CDI |
0 |
156 |
82 |
227 |
467 |
1028 |
1297 |
0 |
| VCDI |
0 |
87 |
36 |
173 |
404 |
2263 |
27427 |
7933 |
|
...date precedes bulletin
|
Date: 2023-05-30:
| 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 |
0 |
1041 |
198 |
258 |
71 |
7 |
0 |
0 |
| OW |
0 |
252 |
134 |
414 |
247 |
18 |
0 |
0 |
| VODI |
0 |
127 |
50 |
293 |
716 |
236 |
4 |
0 |
| ODI |
0 |
76 |
36 |
139 |
398 |
709 |
27 |
0 |
| CDI |
0 |
121 |
70 |
301 |
1041 |
3472 |
712 |
0 |
| VCDI |
0 |
12 |
9 |
148 |
530 |
2535 |
26512 |
4952 |
|
...date precedes bulletin
|
Date: 2023-06-01:
| 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 |
0 |
1377 |
261 |
381 |
133 |
24 |
0 |
0 |
| OW |
0 |
213 |
118 |
337 |
397 |
196 |
22 |
0 |
| VODI |
0 |
123 |
66 |
170 |
292 |
403 |
178 |
0 |
| ODI |
0 |
56 |
37 |
144 |
177 |
426 |
604 |
0 |
| CDI |
0 |
104 |
41 |
150 |
400 |
1337 |
3423 |
0 |
| VCDI |
0 |
17 |
20 |
100 |
297 |
2776 |
26319 |
4747 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1410 |
287 |
462 |
199 |
47 |
0 |
0 |
| OW |
0 |
191 |
95 |
254 |
331 |
170 |
14 |
0 |
| VODI |
0 |
121 |
66 |
179 |
295 |
433 |
183 |
0 |
| ODI |
0 |
55 |
37 |
145 |
193 |
397 |
561 |
0 |
| CDI |
0 |
98 |
40 |
148 |
393 |
1355 |
3536 |
0 |
| VCDI |
0 |
15 |
18 |
94 |
285 |
2760 |
26252 |
4747 |
|
Date: 2023-06-03:
| 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 |
0 |
1606 |
303 |
547 |
323 |
24 |
0 |
0 |
| OW |
0 |
211 |
68 |
338 |
466 |
125 |
13 |
0 |
| VODI |
0 |
129 |
67 |
244 |
468 |
303 |
67 |
0 |
| ODI |
0 |
95 |
67 |
239 |
411 |
653 |
204 |
0 |
| CDI |
0 |
85 |
31 |
284 |
1348 |
1298 |
2166 |
5 |
| VCDI |
0 |
22 |
21 |
119 |
325 |
2733 |
23469 |
6989 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1637 |
311 |
596 |
362 |
45 |
0 |
0 |
| OW |
0 |
174 |
60 |
263 |
384 |
98 |
17 |
0 |
| VODI |
0 |
133 |
66 |
268 |
482 |
284 |
72 |
0 |
| ODI |
0 |
105 |
70 |
236 |
451 |
654 |
213 |
0 |
| CDI |
0 |
74 |
31 |
287 |
1319 |
1330 |
2178 |
5 |
| VCDI |
0 |
25 |
19 |
121 |
343 |
2725 |
23439 |
6989 |
|
Date: 2023-06-05:
| 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 |
0 |
1983 |
311 |
497 |
288 |
45 |
3 |
0 |
| OW |
0 |
243 |
104 |
311 |
241 |
83 |
1 |
0 |
| VODI |
0 |
116 |
73 |
275 |
394 |
190 |
3 |
0 |
| ODI |
0 |
66 |
33 |
161 |
539 |
504 |
68 |
0 |
| CDI |
0 |
25 |
19 |
101 |
550 |
2434 |
1510 |
0 |
| VCDI |
0 |
0 |
2 |
108 |
226 |
3739 |
25522 |
5098 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1922 |
327 |
630 |
494 |
214 |
4 |
0 |
| OW |
0 |
215 |
55 |
224 |
206 |
231 |
46 |
0 |
| VODI |
0 |
129 |
76 |
195 |
343 |
495 |
236 |
0 |
| ODI |
0 |
71 |
38 |
124 |
394 |
549 |
981 |
0 |
| CDI |
0 |
60 |
25 |
125 |
408 |
1719 |
2000 |
0 |
| VCDI |
0 |
36 |
21 |
155 |
393 |
3787 |
23840 |
5098 |
|
Date: 2023-06-07:
| 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 |
0 |
2359 |
352 |
663 |
416 |
12 |
0 |
0 |
| OW |
0 |
186 |
87 |
297 |
256 |
43 |
0 |
0 |
| VODI |
0 |
79 |
46 |
289 |
497 |
165 |
18 |
0 |
| ODI |
0 |
55 |
33 |
201 |
617 |
439 |
108 |
0 |
| CDI |
0 |
77 |
70 |
912 |
1101 |
2095 |
1394 |
0 |
| VCDI |
0 |
14 |
20 |
323 |
282 |
3299 |
23829 |
5232 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
2195 |
328 |
727 |
680 |
83 |
1 |
0 |
| OW |
0 |
216 |
59 |
260 |
346 |
141 |
31 |
0 |
| VODI |
0 |
133 |
69 |
333 |
714 |
267 |
109 |
0 |
| ODI |
0 |
66 |
69 |
721 |
714 |
622 |
271 |
0 |
| CDI |
0 |
81 |
51 |
377 |
419 |
1617 |
1389 |
0 |
| VCDI |
0 |
79 |
32 |
267 |
296 |
3323 |
23548 |
5232 |
|
Date: 2023-06-09:
| 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 |
0 |
2644 |
331 |
786 |
278 |
7 |
0 |
0 |
| OW |
0 |
231 |
129 |
385 |
256 |
24 |
0 |
0 |
| VODI |
0 |
113 |
94 |
471 |
577 |
136 |
13 |
0 |
| ODI |
0 |
84 |
35 |
201 |
788 |
392 |
44 |
0 |
| CDI |
0 |
67 |
31 |
147 |
1798 |
2409 |
809 |
0 |
| VCDI |
0 |
52 |
21 |
76 |
264 |
3537 |
24261 |
4375 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
2465 |
327 |
914 |
676 |
61 |
4 |
0 |
| OW |
0 |
272 |
105 |
320 |
446 |
88 |
18 |
0 |
| VODI |
0 |
139 |
76 |
344 |
842 |
359 |
36 |
0 |
| ODI |
0 |
133 |
68 |
237 |
1101 |
1407 |
66 |
0 |
| CDI |
0 |
119 |
47 |
172 |
620 |
1019 |
1009 |
5 |
| VCDI |
0 |
63 |
18 |
79 |
276 |
3571 |
23994 |
4370 |
|
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