Validation of sea ice concentration
Bulletin date: 2021-05-20
Model vs. observations, sea ice class contingency tables
Date: 2021-05-14:
| 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 |
13627 |
6240 |
1065 |
1006 |
261 |
144 |
59 |
0 |
| OW |
8 |
6 |
57 |
242 |
137 |
98 |
76 |
0 |
| VODI |
5 |
2 |
27 |
298 |
197 |
206 |
118 |
5 |
| ODI |
0 |
2 |
19 |
163 |
181 |
247 |
301 |
5 |
| CDI |
0 |
0 |
12 |
155 |
385 |
676 |
1247 |
6 |
| VCDI |
0 |
0 |
1 |
81 |
153 |
825 |
5637 |
4179 |
|
...date precedes bulletin
|
Date: 2021-05-18:
| 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 |
13562 |
6072 |
1176 |
771 |
446 |
185 |
114 |
0 |
| OW |
1 |
2 |
171 |
210 |
161 |
117 |
65 |
1 |
| VODI |
0 |
3 |
63 |
203 |
223 |
198 |
146 |
8 |
| ODI |
0 |
0 |
15 |
104 |
246 |
288 |
439 |
7 |
| CDI |
0 |
0 |
33 |
105 |
324 |
618 |
1925 |
0 |
| VCDI |
0 |
0 |
14 |
21 |
69 |
217 |
5258 |
4578 |
|
...date precedes bulletin
|
Date: 2021-05-20:
| 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 |
13352 |
5977 |
1612 |
817 |
410 |
146 |
109 |
0 |
| OW |
0 |
1 |
121 |
249 |
190 |
99 |
72 |
1 |
| VODI |
0 |
3 |
64 |
185 |
275 |
169 |
214 |
12 |
| ODI |
0 |
0 |
18 |
153 |
293 |
268 |
451 |
3 |
| CDI |
0 |
0 |
24 |
94 |
338 |
676 |
2015 |
0 |
| VCDI |
0 |
0 |
10 |
36 |
76 |
206 |
4983 |
4437 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13352 |
5977 |
1614 |
850 |
444 |
190 |
118 |
0 |
| OW |
0 |
1 |
110 |
228 |
175 |
82 |
79 |
0 |
| VODI |
0 |
3 |
76 |
174 |
263 |
156 |
209 |
14 |
| ODI |
0 |
0 |
16 |
154 |
281 |
257 |
450 |
2 |
| CDI |
0 |
0 |
26 |
95 |
344 |
675 |
2075 |
0 |
| VCDI |
0 |
0 |
7 |
33 |
75 |
204 |
4913 |
4437 |
|
Date: 2021-05-24:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2021-05-26:
| 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 |
13394 |
6020 |
1246 |
1378 |
290 |
153 |
148 |
2 |
| OW |
0 |
0 |
154 |
452 |
182 |
52 |
114 |
10 |
| VODI |
0 |
0 |
89 |
387 |
316 |
141 |
235 |
2 |
| ODI |
0 |
0 |
23 |
223 |
426 |
359 |
438 |
1 |
| CDI |
0 |
0 |
12 |
147 |
372 |
609 |
2379 |
0 |
| VCDI |
0 |
0 |
8 |
66 |
61 |
301 |
4148 |
3821 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13394 |
6020 |
1245 |
1462 |
363 |
180 |
217 |
5 |
| OW |
0 |
0 |
108 |
335 |
181 |
66 |
139 |
7 |
| VODI |
0 |
0 |
103 |
350 |
253 |
150 |
238 |
2 |
| ODI |
0 |
0 |
52 |
237 |
331 |
279 |
463 |
1 |
| CDI |
0 |
0 |
20 |
172 |
426 |
548 |
1969 |
0 |
| VCDI |
0 |
0 |
4 |
97 |
93 |
392 |
4436 |
3821 |
|
Date: 2021-05-28:
| 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 |
13618 |
6038 |
1314 |
1079 |
478 |
214 |
204 |
12 |
| OW |
0 |
0 |
167 |
322 |
256 |
110 |
109 |
0 |
| VODI |
0 |
0 |
81 |
258 |
327 |
267 |
292 |
2 |
| ODI |
0 |
0 |
30 |
169 |
373 |
432 |
539 |
1 |
| CDI |
0 |
0 |
11 |
155 |
311 |
456 |
2445 |
4 |
| VCDI |
0 |
0 |
4 |
45 |
49 |
77 |
4144 |
3766 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13618 |
6038 |
1291 |
1105 |
551 |
266 |
291 |
11 |
| OW |
0 |
0 |
130 |
208 |
200 |
122 |
127 |
1 |
| VODI |
0 |
0 |
109 |
261 |
307 |
226 |
347 |
2 |
| ODI |
0 |
0 |
55 |
191 |
337 |
363 |
492 |
3 |
| CDI |
0 |
0 |
20 |
195 |
340 |
487 |
2403 |
2 |
| VCDI |
0 |
0 |
2 |
68 |
59 |
92 |
4073 |
3766 |
|
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