Validation of sea ice concentration - American sector
Bulletin date: 2023-07-20
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-07-14:
| 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 |
7146 |
6523 |
259 |
308 |
132 |
19 |
0 |
0 |
| OW |
0 |
169 |
158 |
371 |
116 |
22 |
0 |
0 |
| VODI |
0 |
123 |
100 |
728 |
1300 |
111 |
11 |
0 |
| ODI |
0 |
32 |
49 |
341 |
4621 |
568 |
47 |
0 |
| CDI |
0 |
15 |
11 |
27 |
7610 |
7963 |
329 |
0 |
| VCDI |
0 |
4 |
0 |
1 |
288 |
5654 |
710 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-16:
| 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 |
7617 |
6195 |
266 |
375 |
96 |
36 |
0 |
0 |
| OW |
0 |
260 |
158 |
473 |
247 |
21 |
0 |
0 |
| VODI |
0 |
147 |
92 |
726 |
1711 |
119 |
6 |
0 |
| ODI |
0 |
16 |
47 |
380 |
5153 |
308 |
37 |
0 |
| CDI |
0 |
1 |
3 |
57 |
6483 |
8275 |
210 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
105 |
5961 |
281 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-18:
| 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 |
7842 |
6415 |
306 |
354 |
78 |
44 |
1 |
0 |
| OW |
0 |
259 |
142 |
383 |
103 |
15 |
0 |
0 |
| VODI |
0 |
109 |
154 |
955 |
997 |
68 |
1 |
0 |
| ODI |
0 |
2 |
6 |
641 |
8036 |
1660 |
18 |
0 |
| CDI |
0 |
2 |
0 |
13 |
3155 |
9275 |
400 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
3 |
3704 |
721 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-20:
| 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 |
8876 |
5707 |
322 |
387 |
92 |
35 |
0 |
0 |
| OW |
0 |
305 |
199 |
504 |
151 |
24 |
0 |
0 |
| VODI |
0 |
101 |
129 |
1298 |
1353 |
83 |
1 |
0 |
| ODI |
0 |
2 |
6 |
911 |
7779 |
1162 |
20 |
0 |
| CDI |
0 |
2 |
0 |
51 |
3454 |
8763 |
302 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
7 |
3589 |
247 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8876 |
5757 |
326 |
429 |
106 |
38 |
0 |
0 |
| OW |
0 |
247 |
183 |
476 |
198 |
20 |
0 |
0 |
| VODI |
0 |
104 |
139 |
1190 |
1279 |
83 |
1 |
0 |
| ODI |
0 |
7 |
8 |
986 |
7859 |
1193 |
19 |
0 |
| CDI |
0 |
2 |
0 |
70 |
3390 |
8906 |
304 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
4 |
3416 |
246 |
0 |
|
Date: 2023-07-22:
| 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 |
8892 |
6067 |
354 |
381 |
93 |
25 |
1 |
0 |
| OW |
0 |
302 |
246 |
660 |
301 |
27 |
0 |
0 |
| VODI |
0 |
87 |
170 |
1662 |
1864 |
51 |
14 |
0 |
| ODI |
0 |
3 |
5 |
981 |
7215 |
724 |
29 |
0 |
| CDI |
0 |
1 |
0 |
42 |
3613 |
8691 |
200 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
61 |
3009 |
91 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8892 |
6097 |
386 |
420 |
165 |
27 |
1 |
0 |
| OW |
0 |
260 |
204 |
682 |
297 |
17 |
0 |
0 |
| VODI |
0 |
98 |
163 |
1542 |
1809 |
59 |
8 |
0 |
| ODI |
0 |
3 |
22 |
1006 |
7337 |
861 |
34 |
0 |
| CDI |
0 |
2 |
0 |
76 |
3480 |
8837 |
201 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
59 |
2726 |
91 |
0 |
|
Date: 2023-07-24:
| 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 |
8846 |
6532 |
437 |
426 |
85 |
21 |
0 |
0 |
| OW |
0 |
282 |
254 |
463 |
133 |
14 |
0 |
0 |
| VODI |
0 |
139 |
198 |
2869 |
1114 |
51 |
4 |
0 |
| ODI |
0 |
3 |
8 |
787 |
7949 |
446 |
6 |
0 |
| CDI |
0 |
0 |
0 |
4 |
1293 |
12608 |
243 |
0 |
| VCDI |
0 |
4 |
0 |
1 |
8 |
324 |
314 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8846 |
6468 |
452 |
567 |
211 |
24 |
0 |
0 |
| OW |
0 |
306 |
216 |
777 |
376 |
21 |
0 |
0 |
| VODI |
0 |
174 |
210 |
1915 |
1827 |
146 |
5 |
0 |
| ODI |
0 |
8 |
15 |
1223 |
5961 |
1366 |
6 |
0 |
| CDI |
0 |
0 |
4 |
67 |
2158 |
10996 |
470 |
0 |
| VCDI |
0 |
4 |
0 |
1 |
49 |
911 |
86 |
0 |
|
Date: 2023-07-26:
| 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 |
8630 |
7362 |
481 |
409 |
114 |
21 |
0 |
0 |
| OW |
0 |
355 |
326 |
723 |
238 |
29 |
0 |
0 |
| VODI |
0 |
72 |
139 |
3237 |
1728 |
56 |
3 |
0 |
| ODI |
0 |
2 |
0 |
445 |
6949 |
564 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
2407 |
9254 |
1158 |
0 |
| VCDI |
0 |
4 |
0 |
2 |
15 |
1133 |
6 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8630 |
7178 |
501 |
673 |
306 |
25 |
0 |
0 |
| OW |
0 |
372 |
230 |
848 |
407 |
46 |
0 |
0 |
| VODI |
0 |
228 |
170 |
2361 |
2144 |
76 |
3 |
0 |
| ODI |
0 |
13 |
45 |
895 |
5632 |
1116 |
0 |
0 |
| CDI |
0 |
0 |
0 |
38 |
2864 |
9477 |
1159 |
0 |
| VCDI |
0 |
4 |
0 |
5 |
98 |
317 |
5 |
0 |
|
Date: 2023-07-28:
| 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 |
9084 |
7384 |
510 |
470 |
139 |
22 |
0 |
0 |
| OW |
0 |
418 |
454 |
1065 |
246 |
26 |
3 |
0 |
| VODI |
0 |
71 |
140 |
3315 |
2090 |
67 |
3 |
0 |
| ODI |
0 |
5 |
5 |
407 |
6057 |
642 |
4 |
0 |
| CDI |
0 |
0 |
0 |
8 |
2556 |
7833 |
917 |
0 |
| VCDI |
0 |
4 |
0 |
2 |
22 |
1792 |
105 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9084 |
7182 |
571 |
888 |
300 |
28 |
0 |
0 |
| OW |
0 |
423 |
235 |
1361 |
410 |
49 |
3 |
0 |
| VODI |
0 |
240 |
228 |
2352 |
2149 |
108 |
7 |
0 |
| ODI |
0 |
30 |
74 |
641 |
4905 |
1064 |
0 |
0 |
| CDI |
0 |
3 |
1 |
18 |
3285 |
8205 |
916 |
0 |
| VCDI |
0 |
4 |
0 |
7 |
61 |
928 |
106 |
0 |
|
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