Validation of sea ice concentration
Bulletin date: 2021-03-25
Model vs. observations, sea ice class contingency tables
Date: 2021-03-19:
| 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 |
12577 |
5713 |
717 |
219 |
152 |
42 |
1 |
0 |
| OW |
0 |
77 |
173 |
87 |
87 |
58 |
7 |
0 |
| VODI |
0 |
19 |
139 |
99 |
129 |
107 |
27 |
0 |
| ODI |
0 |
4 |
69 |
80 |
101 |
141 |
92 |
0 |
| CDI |
0 |
0 |
32 |
68 |
146 |
358 |
587 |
10 |
| VCDI |
0 |
0 |
22 |
61 |
143 |
600 |
7871 |
7344 |
|
...date precedes bulletin
|
Date: 2021-03-23:
| 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 |
12388 |
5773 |
1124 |
336 |
120 |
19 |
1 |
0 |
| OW |
0 |
55 |
176 |
111 |
103 |
23 |
5 |
0 |
| VODI |
0 |
17 |
99 |
155 |
148 |
85 |
14 |
0 |
| ODI |
0 |
7 |
50 |
110 |
160 |
142 |
99 |
2 |
| CDI |
0 |
2 |
34 |
120 |
202 |
301 |
396 |
70 |
| VCDI |
0 |
3 |
70 |
255 |
385 |
812 |
8414 |
5773 |
|
...date precedes bulletin
|
Date: 2021-03-25:
| 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 |
12498 |
5975 |
855 |
273 |
152 |
33 |
6 |
0 |
| OW |
0 |
62 |
156 |
105 |
97 |
30 |
15 |
0 |
| VODI |
0 |
52 |
99 |
111 |
154 |
56 |
43 |
0 |
| ODI |
0 |
10 |
54 |
94 |
193 |
121 |
103 |
0 |
| CDI |
0 |
11 |
42 |
63 |
202 |
266 |
362 |
19 |
| VCDI |
0 |
12 |
163 |
183 |
551 |
915 |
8594 |
5429 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12498 |
5966 |
852 |
281 |
170 |
38 |
8 |
0 |
| OW |
0 |
63 |
145 |
95 |
91 |
25 |
17 |
0 |
| VODI |
0 |
45 |
112 |
114 |
150 |
56 |
43 |
0 |
| ODI |
0 |
25 |
51 |
90 |
196 |
133 |
93 |
0 |
| CDI |
0 |
10 |
37 |
72 |
201 |
252 |
366 |
23 |
| VCDI |
0 |
13 |
172 |
177 |
541 |
917 |
8596 |
5425 |
|
Date: 2021-03-29:
| 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 |
12575 |
6197 |
1084 |
477 |
104 |
24 |
7 |
0 |
| OW |
0 |
31 |
182 |
141 |
59 |
26 |
3 |
0 |
| VODI |
0 |
17 |
162 |
227 |
100 |
70 |
26 |
0 |
| ODI |
0 |
2 |
91 |
149 |
163 |
160 |
95 |
0 |
| CDI |
0 |
0 |
66 |
150 |
248 |
409 |
352 |
0 |
| VCDI |
0 |
0 |
118 |
141 |
321 |
730 |
7555 |
5897 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12575 |
6055 |
920 |
405 |
86 |
16 |
7 |
0 |
| OW |
0 |
90 |
192 |
89 |
52 |
11 |
7 |
0 |
| VODI |
0 |
53 |
163 |
126 |
61 |
62 |
37 |
0 |
| ODI |
0 |
31 |
100 |
134 |
97 |
102 |
87 |
0 |
| CDI |
0 |
15 |
109 |
180 |
147 |
235 |
294 |
0 |
| VCDI |
0 |
3 |
219 |
351 |
552 |
993 |
7606 |
5897 |
|
Date: 2021-03-31:
| 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 |
12886 |
6009 |
825 |
371 |
112 |
26 |
3 |
0 |
| OW |
0 |
125 |
140 |
113 |
64 |
26 |
16 |
0 |
| VODI |
0 |
104 |
162 |
151 |
91 |
59 |
51 |
0 |
| ODI |
0 |
28 |
141 |
153 |
150 |
88 |
152 |
1 |
| CDI |
0 |
8 |
126 |
186 |
248 |
256 |
745 |
17 |
| VCDI |
0 |
2 |
135 |
262 |
503 |
650 |
8076 |
4898 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12886 |
5881 |
741 |
358 |
95 |
22 |
10 |
0 |
| OW |
0 |
152 |
153 |
103 |
51 |
32 |
28 |
0 |
| VODI |
0 |
97 |
142 |
124 |
100 |
49 |
64 |
1 |
| ODI |
0 |
54 |
109 |
135 |
165 |
89 |
153 |
10 |
| CDI |
0 |
58 |
111 |
140 |
234 |
219 |
564 |
46 |
| VCDI |
0 |
34 |
273 |
376 |
523 |
694 |
8224 |
4859 |
|
Date: 2021-04-02:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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