Validation of sea ice concentration
Bulletin date: 2020-03-12
Model vs. observations, sea ice class contingency tables
Date: 2020-03-06:
| 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 |
13101 |
5882 |
895 |
282 |
127 |
83 |
51 |
0 |
| OW |
0 |
15 |
181 |
136 |
108 |
83 |
52 |
0 |
| VODI |
0 |
3 |
115 |
119 |
164 |
294 |
103 |
0 |
| ODI |
0 |
1 |
33 |
72 |
90 |
288 |
149 |
0 |
| CDI |
0 |
0 |
10 |
45 |
99 |
260 |
492 |
8 |
| VCDI |
0 |
0 |
6 |
51 |
116 |
309 |
7640 |
6696 |
|
...date precedes bulletin
|
Date: 2020-03-10:
| 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 |
13317 |
5881 |
653 |
441 |
139 |
46 |
34 |
0 |
| OW |
0 |
83 |
155 |
228 |
99 |
50 |
18 |
0 |
| VODI |
0 |
24 |
134 |
231 |
132 |
91 |
76 |
0 |
| ODI |
0 |
6 |
53 |
194 |
139 |
84 |
99 |
39 |
| CDI |
0 |
5 |
28 |
98 |
182 |
167 |
283 |
116 |
| VCDI |
0 |
0 |
14 |
60 |
99 |
343 |
8065 |
6253 |
|
...date precedes bulletin
|
Date: 2020-03-12:
| 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 |
13059 |
5684 |
739 |
469 |
172 |
85 |
36 |
0 |
| OW |
0 |
62 |
142 |
202 |
155 |
107 |
31 |
0 |
| VODI |
0 |
13 |
112 |
159 |
152 |
166 |
88 |
0 |
| ODI |
0 |
10 |
21 |
108 |
111 |
147 |
112 |
0 |
| CDI |
0 |
11 |
16 |
33 |
147 |
262 |
374 |
46 |
| VCDI |
0 |
11 |
32 |
73 |
107 |
330 |
7888 |
6687 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13059 |
5689 |
761 |
496 |
193 |
88 |
34 |
0 |
| OW |
0 |
52 |
128 |
189 |
138 |
97 |
30 |
0 |
| VODI |
0 |
17 |
101 |
148 |
142 |
177 |
94 |
0 |
| ODI |
0 |
9 |
23 |
101 |
129 |
146 |
101 |
0 |
| CDI |
0 |
9 |
14 |
37 |
127 |
252 |
378 |
47 |
| VCDI |
0 |
15 |
35 |
73 |
115 |
337 |
7892 |
6686 |
|
Date: 2020-03-16:
| 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 |
12363 |
5635 |
884 |
653 |
368 |
145 |
30 |
0 |
| OW |
0 |
18 |
142 |
171 |
154 |
181 |
40 |
0 |
| VODI |
0 |
0 |
51 |
128 |
198 |
231 |
114 |
0 |
| ODI |
0 |
0 |
21 |
80 |
119 |
269 |
125 |
0 |
| CDI |
0 |
0 |
13 |
30 |
75 |
423 |
451 |
17 |
| VCDI |
0 |
0 |
5 |
28 |
35 |
452 |
6476 |
8034 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12363 |
5615 |
783 |
627 |
367 |
140 |
38 |
0 |
| OW |
0 |
32 |
151 |
144 |
123 |
106 |
29 |
0 |
| VODI |
0 |
5 |
108 |
135 |
161 |
196 |
57 |
0 |
| ODI |
0 |
1 |
38 |
95 |
128 |
230 |
148 |
0 |
| CDI |
0 |
0 |
23 |
38 |
94 |
347 |
364 |
26 |
| VCDI |
0 |
0 |
13 |
51 |
76 |
682 |
6600 |
8025 |
|
Date: 2020-03-18:
| 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 |
12242 |
5634 |
1132 |
851 |
264 |
99 |
26 |
0 |
| OW |
0 |
10 |
166 |
163 |
165 |
109 |
18 |
0 |
| VODI |
0 |
2 |
85 |
139 |
163 |
148 |
73 |
0 |
| ODI |
0 |
0 |
44 |
67 |
160 |
138 |
92 |
2 |
| CDI |
0 |
0 |
20 |
65 |
154 |
206 |
299 |
40 |
| VCDI |
0 |
0 |
27 |
70 |
167 |
368 |
7734 |
7017 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12242 |
5622 |
993 |
720 |
209 |
93 |
25 |
0 |
| OW |
0 |
20 |
230 |
204 |
86 |
41 |
35 |
0 |
| VODI |
0 |
3 |
129 |
159 |
198 |
84 |
49 |
0 |
| ODI |
0 |
1 |
57 |
97 |
169 |
167 |
112 |
2 |
| CDI |
0 |
0 |
28 |
78 |
171 |
239 |
438 |
57 |
| VCDI |
0 |
0 |
37 |
97 |
240 |
444 |
7583 |
7000 |
|
Date: 2020-03-20:
| 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 |
12205 |
5630 |
902 |
887 |
169 |
71 |
41 |
0 |
| OW |
0 |
23 |
220 |
287 |
126 |
40 |
36 |
0 |
| VODI |
0 |
1 |
109 |
200 |
151 |
129 |
76 |
0 |
| ODI |
0 |
1 |
34 |
91 |
121 |
107 |
114 |
0 |
| CDI |
0 |
0 |
10 |
48 |
138 |
254 |
553 |
7 |
| VCDI |
0 |
0 |
15 |
53 |
99 |
445 |
9296 |
5470 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12205 |
5495 |
797 |
815 |
141 |
76 |
51 |
0 |
| OW |
0 |
126 |
161 |
202 |
86 |
23 |
42 |
0 |
| VODI |
0 |
32 |
215 |
248 |
151 |
85 |
54 |
0 |
| ODI |
0 |
2 |
71 |
140 |
152 |
123 |
87 |
0 |
| CDI |
0 |
0 |
27 |
88 |
144 |
247 |
528 |
0 |
| VCDI |
0 |
0 |
19 |
73 |
130 |
492 |
9354 |
5477 |
|
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