Validation of sea ice concentration
Bulletin date: 2024-07-18
Model vs. observations, sea ice class contingency tables
Date: 2024-07-12:
| 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 |
78418 |
20726 |
4336 |
960 |
124 |
40 |
65 |
0 |
| OW |
0 |
474 |
2232 |
3336 |
1223 |
289 |
268 |
0 |
| VODI |
0 |
68 |
618 |
2714 |
3001 |
1561 |
1374 |
0 |
| ODI |
0 |
0 |
69 |
833 |
1604 |
2140 |
5507 |
138 |
| CDI |
0 |
0 |
325 |
246 |
480 |
877 |
14430 |
9374 |
| VCDI |
0 |
0 |
1 |
80 |
27 |
133 |
377 |
0 |
|
...date precedes bulletin
|
Date: 2024-07-16:
| 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 |
80734 |
18868 |
6030 |
2214 |
372 |
27 |
87 |
0 |
| OW |
0 |
229 |
2413 |
5515 |
1892 |
319 |
224 |
0 |
| VODI |
0 |
0 |
428 |
2552 |
2330 |
1757 |
1105 |
0 |
| ODI |
0 |
0 |
156 |
624 |
1469 |
2224 |
2680 |
6 |
| CDI |
0 |
0 |
288 |
287 |
316 |
607 |
11454 |
10044 |
| VCDI |
0 |
0 |
0 |
4 |
3 |
2 |
543 |
665 |
|
...date precedes bulletin
|
Date: 2024-07-18:
| 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 |
80086 |
19274 |
7160 |
3204 |
245 |
52 |
82 |
0 |
| OW |
0 |
324 |
2286 |
4646 |
1088 |
334 |
270 |
0 |
| VODI |
0 |
0 |
514 |
3189 |
1988 |
1671 |
1404 |
0 |
| ODI |
0 |
0 |
266 |
1054 |
1686 |
1615 |
2023 |
8 |
| CDI |
0 |
0 |
121 |
269 |
316 |
851 |
11624 |
9878 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1 |
426 |
513 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
80086 |
19395 |
7331 |
3798 |
316 |
92 |
78 |
0 |
| OW |
0 |
203 |
2115 |
4043 |
1014 |
377 |
295 |
0 |
| VODI |
0 |
0 |
551 |
3129 |
1929 |
1549 |
1337 |
0 |
| ODI |
0 |
0 |
238 |
1095 |
1707 |
1585 |
2257 |
45 |
| CDI |
0 |
0 |
112 |
297 |
354 |
918 |
11360 |
9832 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
3 |
502 |
522 |
|
Date: 2024-07-22:
| 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 |
82697 |
17074 |
12151 |
3253 |
209 |
44 |
78 |
0 |
| OW |
0 |
110 |
2251 |
3236 |
699 |
113 |
174 |
0 |
| VODI |
0 |
0 |
743 |
2948 |
2544 |
1049 |
617 |
4 |
| ODI |
0 |
0 |
241 |
658 |
1101 |
1776 |
1810 |
20 |
| CDI |
0 |
0 |
169 |
196 |
70 |
194 |
8154 |
11422 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1 |
1220 |
1442 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
82697 |
16988 |
11051 |
2452 |
182 |
41 |
84 |
0 |
| OW |
0 |
196 |
2684 |
3403 |
674 |
159 |
218 |
0 |
| VODI |
0 |
0 |
1322 |
2805 |
2012 |
916 |
803 |
3 |
| ODI |
0 |
0 |
306 |
1330 |
1545 |
1422 |
1719 |
339 |
| CDI |
0 |
0 |
192 |
301 |
210 |
626 |
8124 |
10409 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
13 |
1105 |
2137 |
|
Date: 2024-07-24:
| 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 |
83603 |
17753 |
12179 |
2767 |
274 |
54 |
82 |
0 |
| OW |
0 |
35 |
2333 |
2999 |
905 |
196 |
163 |
0 |
| VODI |
0 |
0 |
625 |
2793 |
2229 |
1135 |
774 |
3 |
| ODI |
0 |
0 |
212 |
631 |
962 |
1510 |
1819 |
16 |
| CDI |
0 |
0 |
122 |
162 |
65 |
220 |
7986 |
10994 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
1114 |
1753 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
83603 |
17694 |
11013 |
2135 |
263 |
62 |
60 |
0 |
| OW |
0 |
94 |
3024 |
2872 |
822 |
270 |
222 |
0 |
| VODI |
0 |
0 |
998 |
2756 |
1712 |
874 |
787 |
1 |
| ODI |
0 |
0 |
278 |
1309 |
1465 |
1295 |
1977 |
389 |
| CDI |
0 |
0 |
158 |
280 |
170 |
602 |
7503 |
9305 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
12 |
1389 |
3071 |
|
Date: 2024-07-26:
| 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 |
84855 |
18321 |
11927 |
2332 |
370 |
105 |
97 |
0 |
| OW |
0 |
7 |
2556 |
2674 |
946 |
301 |
181 |
0 |
| VODI |
0 |
0 |
552 |
2879 |
1891 |
1135 |
730 |
9 |
| ODI |
0 |
0 |
277 |
628 |
708 |
1231 |
1873 |
64 |
| CDI |
0 |
0 |
116 |
107 |
44 |
232 |
8379 |
11389 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
845 |
707 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
84855 |
18142 |
10507 |
1712 |
298 |
116 |
92 |
0 |
| OW |
0 |
186 |
3355 |
2621 |
929 |
234 |
235 |
0 |
| VODI |
0 |
0 |
1080 |
2730 |
1456 |
905 |
706 |
1 |
| ODI |
0 |
0 |
297 |
1342 |
1129 |
1255 |
2042 |
385 |
| CDI |
0 |
0 |
189 |
215 |
147 |
485 |
7730 |
10443 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
9 |
1300 |
1340 |
|
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