Validation of sea ice concentration
Bulletin date: 2020-03-19
Model vs. observations, sea ice class contingency tables
Date: 2020-03-13:
| 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 |
12749 |
5713 |
848 |
535 |
220 |
79 |
39 |
0 |
| OW |
0 |
82 |
173 |
182 |
199 |
68 |
33 |
0 |
| VODI |
0 |
16 |
124 |
117 |
166 |
188 |
75 |
0 |
| ODI |
0 |
6 |
50 |
69 |
97 |
167 |
118 |
37 |
| CDI |
0 |
6 |
16 |
56 |
133 |
262 |
398 |
124 |
| VCDI |
0 |
10 |
68 |
95 |
174 |
629 |
8268 |
5770 |
|
...date precedes bulletin
|
Date: 2020-03-17:
| 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 |
12368 |
5685 |
978 |
916 |
242 |
118 |
24 |
0 |
| OW |
0 |
13 |
133 |
199 |
105 |
94 |
35 |
0 |
| VODI |
0 |
0 |
80 |
174 |
141 |
134 |
97 |
0 |
| ODI |
0 |
0 |
34 |
115 |
135 |
148 |
100 |
1 |
| CDI |
0 |
0 |
22 |
73 |
173 |
278 |
342 |
65 |
| VCDI |
0 |
0 |
9 |
58 |
90 |
387 |
7130 |
7463 |
|
...date precedes bulletin
|
Date: 2020-03-19:
| 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 |
12264 |
5658 |
994 |
882 |
173 |
86 |
27 |
0 |
| OW |
0 |
15 |
170 |
270 |
145 |
67 |
24 |
0 |
| VODI |
0 |
3 |
94 |
199 |
134 |
108 |
76 |
0 |
| ODI |
0 |
0 |
39 |
89 |
121 |
141 |
101 |
0 |
| CDI |
0 |
0 |
13 |
58 |
130 |
244 |
411 |
1 |
| VCDI |
0 |
0 |
12 |
75 |
107 |
425 |
8881 |
5922 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12264 |
5650 |
1020 |
943 |
208 |
89 |
29 |
0 |
| OW |
0 |
24 |
150 |
212 |
100 |
70 |
30 |
0 |
| VODI |
0 |
2 |
87 |
196 |
144 |
107 |
74 |
0 |
| ODI |
0 |
0 |
37 |
81 |
113 |
129 |
80 |
0 |
| CDI |
0 |
0 |
17 |
68 |
125 |
234 |
467 |
3 |
| VCDI |
0 |
0 |
11 |
73 |
120 |
442 |
8840 |
5920 |
|
Date: 2020-03-23:
| 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 |
12552 |
5770 |
788 |
570 |
292 |
102 |
40 |
0 |
| OW |
0 |
28 |
147 |
189 |
190 |
97 |
26 |
0 |
| VODI |
0 |
10 |
61 |
155 |
198 |
217 |
81 |
0 |
| ODI |
0 |
1 |
37 |
58 |
137 |
289 |
188 |
0 |
| CDI |
0 |
0 |
11 |
51 |
76 |
301 |
590 |
36 |
| VCDI |
0 |
0 |
1 |
19 |
24 |
207 |
7539 |
7081 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12552 |
5767 |
726 |
552 |
317 |
136 |
49 |
0 |
| OW |
0 |
22 |
140 |
200 |
177 |
107 |
30 |
0 |
| VODI |
0 |
9 |
90 |
128 |
160 |
174 |
83 |
0 |
| ODI |
0 |
6 |
49 |
66 |
108 |
190 |
188 |
0 |
| CDI |
0 |
5 |
29 |
47 |
82 |
245 |
456 |
43 |
| VCDI |
0 |
0 |
11 |
49 |
73 |
361 |
7658 |
7074 |
|
Date: 2020-03-25:
| 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 |
12807 |
5891 |
835 |
604 |
270 |
67 |
43 |
0 |
| OW |
0 |
38 |
197 |
273 |
155 |
86 |
24 |
0 |
| VODI |
0 |
11 |
90 |
204 |
184 |
148 |
87 |
0 |
| ODI |
0 |
2 |
40 |
90 |
138 |
166 |
151 |
3 |
| CDI |
0 |
0 |
21 |
45 |
109 |
291 |
522 |
10 |
| VCDI |
0 |
0 |
10 |
22 |
66 |
269 |
8997 |
5193 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12807 |
5884 |
789 |
587 |
250 |
77 |
53 |
0 |
| OW |
0 |
37 |
178 |
187 |
126 |
54 |
33 |
0 |
| VODI |
0 |
14 |
102 |
233 |
159 |
126 |
82 |
0 |
| ODI |
0 |
6 |
55 |
115 |
131 |
132 |
161 |
0 |
| CDI |
0 |
1 |
39 |
62 |
115 |
221 |
511 |
15 |
| VCDI |
0 |
0 |
30 |
54 |
141 |
417 |
8984 |
5191 |
|
Date: 2020-03-27:
| 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 |
12585 |
5932 |
927 |
659 |
270 |
36 |
30 |
0 |
| OW |
0 |
34 |
259 |
213 |
137 |
53 |
13 |
0 |
| VODI |
0 |
7 |
162 |
226 |
165 |
151 |
55 |
0 |
| ODI |
0 |
1 |
49 |
127 |
120 |
175 |
92 |
0 |
| CDI |
0 |
1 |
28 |
37 |
163 |
274 |
607 |
25 |
| VCDI |
0 |
0 |
16 |
33 |
86 |
418 |
8885 |
5108 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12585 |
5953 |
872 |
686 |
318 |
70 |
40 |
0 |
| OW |
0 |
20 |
254 |
189 |
123 |
83 |
18 |
0 |
| VODI |
0 |
2 |
176 |
239 |
148 |
155 |
81 |
0 |
| ODI |
0 |
0 |
77 |
74 |
111 |
123 |
192 |
0 |
| CDI |
0 |
0 |
40 |
63 |
117 |
195 |
545 |
11 |
| VCDI |
0 |
0 |
22 |
44 |
124 |
481 |
8806 |
5122 |
|
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