Validation of sea ice concentration
Bulletin date: 2019-04-04
Model vs. observations, sea ice class contingency tables
Date: 2019-03-29:
| 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 |
13130 |
5983 |
1177 |
505 |
54 |
36 |
100 |
0 |
| OW |
0 |
41 |
320 |
267 |
112 |
78 |
81 |
0 |
| VODI |
0 |
8 |
167 |
261 |
159 |
175 |
143 |
0 |
| ODI |
0 |
1 |
51 |
140 |
111 |
149 |
226 |
5 |
| CDI |
0 |
0 |
22 |
120 |
140 |
212 |
641 |
35 |
| VCDI |
0 |
0 |
19 |
115 |
146 |
380 |
7665 |
5184 |
|
...date precedes bulletin
|
Date: 2019-04-02:
| 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 |
12856 |
6101 |
1225 |
596 |
273 |
129 |
124 |
0 |
| OW |
0 |
3 |
236 |
277 |
145 |
104 |
74 |
0 |
| VODI |
0 |
0 |
114 |
340 |
222 |
182 |
167 |
0 |
| ODI |
0 |
0 |
33 |
137 |
150 |
148 |
288 |
4 |
| CDI |
0 |
0 |
14 |
65 |
150 |
211 |
701 |
34 |
| VCDI |
0 |
0 |
4 |
49 |
104 |
220 |
7512 |
5167 |
|
...date precedes bulletin
|
Date: 2019-04-04:
| 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 |
12707 |
6309 |
965 |
548 |
485 |
186 |
103 |
0 |
| OW |
0 |
26 |
207 |
205 |
191 |
142 |
90 |
0 |
| VODI |
0 |
1 |
82 |
208 |
209 |
307 |
163 |
0 |
| ODI |
0 |
0 |
42 |
91 |
151 |
215 |
293 |
0 |
| CDI |
0 |
0 |
27 |
44 |
124 |
267 |
791 |
9 |
| VCDI |
0 |
0 |
33 |
53 |
122 |
341 |
7642 |
4780 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12707 |
6323 |
1004 |
580 |
510 |
216 |
122 |
0 |
| OW |
0 |
12 |
180 |
185 |
165 |
130 |
73 |
0 |
| VODI |
0 |
1 |
70 |
208 |
222 |
319 |
192 |
0 |
| ODI |
0 |
0 |
39 |
78 |
139 |
196 |
295 |
2 |
| CDI |
0 |
0 |
31 |
46 |
117 |
261 |
840 |
10 |
| VCDI |
0 |
0 |
32 |
52 |
129 |
336 |
7560 |
4777 |
|
Date: 2019-04-08:
| 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 |
12451 |
6270 |
1174 |
694 |
418 |
149 |
69 |
0 |
| OW |
0 |
4 |
168 |
219 |
148 |
135 |
53 |
0 |
| VODI |
0 |
0 |
56 |
184 |
278 |
279 |
110 |
0 |
| ODI |
0 |
0 |
14 |
95 |
191 |
319 |
320 |
13 |
| CDI |
0 |
0 |
1 |
37 |
132 |
409 |
1067 |
57 |
| VCDI |
0 |
0 |
1 |
38 |
47 |
322 |
7372 |
4865 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12451 |
6261 |
1206 |
781 |
489 |
231 |
93 |
0 |
| OW |
0 |
12 |
121 |
121 |
120 |
151 |
54 |
0 |
| VODI |
0 |
1 |
60 |
154 |
200 |
222 |
129 |
0 |
| ODI |
0 |
0 |
15 |
75 |
145 |
239 |
385 |
11 |
| CDI |
0 |
0 |
8 |
53 |
136 |
351 |
957 |
68 |
| VCDI |
0 |
0 |
4 |
83 |
124 |
419 |
7373 |
4856 |
|
Date: 2019-04-10:
| 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 |
12260 |
6128 |
1083 |
924 |
484 |
182 |
102 |
0 |
| OW |
0 |
6 |
122 |
207 |
221 |
132 |
71 |
0 |
| VODI |
0 |
0 |
24 |
136 |
214 |
246 |
151 |
0 |
| ODI |
0 |
0 |
1 |
31 |
137 |
266 |
299 |
10 |
| CDI |
0 |
0 |
0 |
9 |
101 |
269 |
1034 |
26 |
| VCDI |
0 |
0 |
1 |
10 |
73 |
404 |
7460 |
5335 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12260 |
6126 |
1118 |
986 |
541 |
227 |
145 |
0 |
| OW |
0 |
8 |
74 |
143 |
158 |
125 |
83 |
0 |
| VODI |
0 |
0 |
37 |
113 |
194 |
239 |
156 |
0 |
| ODI |
0 |
0 |
1 |
45 |
139 |
197 |
367 |
11 |
| CDI |
0 |
0 |
0 |
18 |
115 |
302 |
993 |
29 |
| VCDI |
0 |
0 |
1 |
12 |
83 |
409 |
7373 |
5331 |
|
Date: 2019-04-12:
| 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 |
12162 |
6101 |
1344 |
746 |
491 |
167 |
100 |
0 |
| OW |
0 |
10 |
177 |
214 |
202 |
141 |
63 |
0 |
| VODI |
0 |
0 |
48 |
110 |
208 |
220 |
127 |
0 |
| ODI |
0 |
0 |
11 |
28 |
131 |
267 |
216 |
1 |
| CDI |
0 |
0 |
6 |
16 |
86 |
352 |
805 |
23 |
| VCDI |
0 |
0 |
4 |
11 |
33 |
443 |
7231 |
5864 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12162 |
6100 |
1401 |
811 |
544 |
228 |
151 |
0 |
| OW |
0 |
9 |
119 |
147 |
151 |
140 |
81 |
0 |
| VODI |
0 |
2 |
51 |
112 |
173 |
215 |
213 |
0 |
| ODI |
0 |
0 |
9 |
29 |
122 |
200 |
352 |
4 |
| CDI |
0 |
0 |
4 |
14 |
119 |
323 |
743 |
22 |
| VCDI |
0 |
0 |
6 |
12 |
42 |
484 |
7002 |
5862 |
|
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