Validation of sea ice concentration
Bulletin date: 2020-03-26
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2020-03-24:
| 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 |
12725 |
5809 |
826 |
639 |
269 |
101 |
47 |
0 |
| OW |
0 |
23 |
114 |
275 |
185 |
87 |
32 |
0 |
| VODI |
0 |
7 |
59 |
163 |
174 |
184 |
98 |
0 |
| ODI |
0 |
0 |
36 |
63 |
140 |
194 |
192 |
0 |
| CDI |
0 |
0 |
16 |
32 |
83 |
282 |
515 |
9 |
| VCDI |
0 |
0 |
4 |
29 |
64 |
303 |
9073 |
5307 |
|
...date precedes bulletin
|
Date: 2020-03-26:
| 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 |
12640 |
5905 |
1009 |
635 |
230 |
54 |
39 |
0 |
| OW |
0 |
38 |
245 |
257 |
132 |
72 |
27 |
0 |
| VODI |
0 |
6 |
118 |
219 |
137 |
149 |
90 |
0 |
| ODI |
0 |
2 |
55 |
116 |
142 |
141 |
152 |
6 |
| CDI |
0 |
1 |
22 |
42 |
132 |
269 |
589 |
23 |
| VCDI |
0 |
0 |
13 |
27 |
85 |
330 |
8983 |
5027 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12640 |
5890 |
1066 |
701 |
250 |
73 |
41 |
0 |
| OW |
0 |
45 |
182 |
225 |
122 |
66 |
30 |
0 |
| VODI |
0 |
14 |
112 |
186 |
139 |
138 |
85 |
1 |
| ODI |
0 |
2 |
61 |
111 |
124 |
138 |
163 |
8 |
| CDI |
0 |
1 |
27 |
46 |
135 |
264 |
579 |
25 |
| VCDI |
0 |
0 |
14 |
27 |
88 |
336 |
8982 |
5022 |
|
Date: 2020-03-30:
| 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 |
11777 |
5878 |
1258 |
767 |
287 |
112 |
79 |
0 |
| OW |
0 |
3 |
215 |
176 |
179 |
90 |
61 |
0 |
| VODI |
0 |
0 |
64 |
89 |
203 |
242 |
123 |
0 |
| ODI |
0 |
0 |
18 |
54 |
155 |
337 |
237 |
0 |
| CDI |
0 |
0 |
7 |
15 |
60 |
230 |
794 |
14 |
| VCDI |
0 |
0 |
5 |
4 |
12 |
171 |
7679 |
6764 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11777 |
5864 |
1321 |
813 |
324 |
141 |
117 |
0 |
| OW |
0 |
17 |
125 |
112 |
141 |
78 |
68 |
0 |
| VODI |
0 |
0 |
76 |
84 |
152 |
178 |
128 |
0 |
| ODI |
0 |
0 |
27 |
52 |
124 |
222 |
185 |
3 |
| CDI |
0 |
0 |
10 |
27 |
116 |
278 |
571 |
43 |
| VCDI |
0 |
0 |
8 |
17 |
39 |
285 |
7904 |
6732 |
|
Date: 2020-04-01:
| 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 |
11448 |
5741 |
1454 |
740 |
466 |
147 |
115 |
0 |
| OW |
0 |
7 |
178 |
176 |
159 |
153 |
78 |
0 |
| VODI |
0 |
0 |
44 |
108 |
152 |
198 |
150 |
0 |
| ODI |
0 |
0 |
15 |
27 |
83 |
206 |
279 |
0 |
| CDI |
0 |
0 |
4 |
15 |
48 |
178 |
676 |
3 |
| VCDI |
0 |
0 |
8 |
8 |
74 |
183 |
7869 |
6969 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11448 |
5742 |
1520 |
742 |
429 |
173 |
135 |
0 |
| OW |
0 |
6 |
119 |
141 |
134 |
109 |
84 |
0 |
| VODI |
0 |
0 |
44 |
123 |
145 |
170 |
144 |
0 |
| ODI |
0 |
0 |
8 |
35 |
116 |
187 |
220 |
0 |
| CDI |
0 |
0 |
4 |
17 |
70 |
177 |
659 |
7 |
| VCDI |
0 |
0 |
8 |
16 |
88 |
249 |
7925 |
6965 |
|
Date: 2020-04-03:
| 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 |
11438 |
5644 |
1258 |
868 |
468 |
220 |
149 |
0 |
| OW |
0 |
2 |
83 |
186 |
208 |
140 |
108 |
0 |
| VODI |
0 |
0 |
19 |
88 |
166 |
236 |
153 |
0 |
| ODI |
0 |
0 |
12 |
38 |
103 |
189 |
178 |
3 |
| CDI |
0 |
0 |
3 |
8 |
61 |
196 |
583 |
87 |
| VCDI |
0 |
0 |
7 |
7 |
46 |
273 |
8137 |
6794 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11438 |
5646 |
1299 |
905 |
459 |
212 |
161 |
0 |
| OW |
0 |
0 |
51 |
138 |
187 |
128 |
93 |
0 |
| VODI |
0 |
0 |
19 |
92 |
155 |
220 |
216 |
1 |
| ODI |
0 |
0 |
4 |
31 |
105 |
174 |
222 |
33 |
| CDI |
0 |
0 |
2 |
16 |
84 |
260 |
502 |
79 |
| VCDI |
0 |
0 |
7 |
13 |
62 |
260 |
8114 |
6771 |
|
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