Validation of sea ice concentration
Bulletin date: 2017-07-27
Model vs. observations, sea ice class contingency tables
Date: 2017-07-21:
| 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 |
17926 |
7270 |
1934 |
1122 |
783 |
210 |
105 |
0 |
| OW |
0 |
0 |
83 |
145 |
272 |
218 |
143 |
0 |
| VODI |
0 |
0 |
35 |
100 |
318 |
378 |
341 |
0 |
| ODI |
0 |
0 |
15 |
41 |
93 |
306 |
752 |
0 |
| CDI |
0 |
0 |
4 |
9 |
7 |
137 |
3240 |
295 |
| VCDI |
0 |
0 |
1 |
0 |
0 |
0 |
342 |
1534 |
|
...date precedes bulletin
|
Date: 2017-07-25:
| 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 |
18048 |
7442 |
1768 |
1477 |
938 |
279 |
169 |
0 |
| OW |
0 |
0 |
25 |
107 |
265 |
161 |
101 |
1 |
| VODI |
0 |
0 |
13 |
39 |
235 |
265 |
234 |
10 |
| ODI |
0 |
0 |
6 |
5 |
61 |
308 |
1194 |
14 |
| CDI |
0 |
0 |
2 |
0 |
45 |
148 |
2898 |
654 |
| VCDI |
0 |
0 |
1 |
0 |
0 |
1 |
219 |
1026 |
|
...date precedes bulletin
|
Date: 2017-07-27:
| 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 |
17056 |
8552 |
1798 |
1580 |
829 |
343 |
154 |
0 |
| OW |
0 |
0 |
19 |
89 |
247 |
189 |
130 |
0 |
| VODI |
0 |
0 |
5 |
23 |
154 |
301 |
386 |
0 |
| ODI |
0 |
0 |
3 |
5 |
42 |
185 |
1278 |
0 |
| CDI |
0 |
0 |
3 |
0 |
29 |
119 |
2704 |
917 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
2 |
339 |
678 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17056 |
8552 |
1812 |
1602 |
890 |
387 |
173 |
0 |
| OW |
0 |
0 |
6 |
66 |
199 |
173 |
110 |
0 |
| VODI |
0 |
0 |
4 |
22 |
146 |
280 |
407 |
0 |
| ODI |
0 |
0 |
1 |
6 |
37 |
177 |
1286 |
0 |
| CDI |
0 |
0 |
4 |
1 |
29 |
120 |
2686 |
901 |
| VCDI |
0 |
0 |
1 |
0 |
0 |
2 |
329 |
694 |
|
Date: 2017-07-31:
| 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 |
18674 |
7534 |
1575 |
1673 |
708 |
216 |
64 |
0 |
| OW |
0 |
0 |
23 |
151 |
227 |
84 |
39 |
0 |
| VODI |
0 |
0 |
13 |
74 |
250 |
159 |
79 |
0 |
| ODI |
0 |
0 |
5 |
20 |
180 |
661 |
325 |
0 |
| CDI |
0 |
0 |
0 |
3 |
33 |
530 |
2698 |
1486 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
25 |
650 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18674 |
7534 |
1580 |
1711 |
784 |
240 |
75 |
0 |
| OW |
0 |
0 |
17 |
121 |
239 |
132 |
55 |
0 |
| VODI |
0 |
0 |
10 |
65 |
261 |
463 |
280 |
0 |
| ODI |
0 |
0 |
9 |
15 |
72 |
553 |
543 |
0 |
| CDI |
0 |
0 |
0 |
9 |
39 |
259 |
2227 |
1570 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
3 |
50 |
566 |
|
Date: 2017-08-02:
| 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 |
18881 |
7655 |
1369 |
1645 |
674 |
232 |
70 |
0 |
| OW |
0 |
0 |
34 |
137 |
233 |
79 |
37 |
0 |
| VODI |
0 |
0 |
9 |
78 |
254 |
212 |
79 |
0 |
| ODI |
0 |
0 |
4 |
24 |
192 |
602 |
394 |
0 |
| CDI |
0 |
0 |
1 |
8 |
28 |
407 |
2636 |
1731 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1 |
28 |
425 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18881 |
7655 |
1368 |
1640 |
749 |
268 |
71 |
0 |
| OW |
0 |
0 |
30 |
152 |
199 |
137 |
49 |
0 |
| VODI |
0 |
0 |
13 |
63 |
338 |
466 |
304 |
0 |
| ODI |
0 |
0 |
5 |
24 |
64 |
443 |
527 |
3 |
| CDI |
0 |
0 |
1 |
13 |
31 |
218 |
2256 |
1821 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1 |
37 |
332 |
|
Date: 2017-08-04:
| 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 |
18942 |
7946 |
1457 |
1488 |
511 |
173 |
68 |
0 |
| OW |
0 |
0 |
21 |
158 |
190 |
91 |
45 |
0 |
| VODI |
0 |
0 |
8 |
54 |
240 |
262 |
144 |
0 |
| ODI |
0 |
0 |
3 |
14 |
66 |
762 |
400 |
7 |
| CDI |
0 |
0 |
2 |
4 |
41 |
265 |
2363 |
1741 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
3 |
172 |
518 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18942 |
7946 |
1447 |
1474 |
562 |
231 |
82 |
0 |
| OW |
0 |
0 |
22 |
153 |
200 |
154 |
74 |
0 |
| VODI |
0 |
0 |
14 |
64 |
197 |
600 |
363 |
0 |
| ODI |
0 |
0 |
5 |
22 |
48 |
401 |
552 |
23 |
| CDI |
0 |
0 |
3 |
5 |
41 |
167 |
2093 |
2079 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
3 |
28 |
164 |
|
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