Validation of sea ice concentration - American sector
Bulletin date: 2023-07-27
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-07-21:
| 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 |
8047 |
6565 |
370 |
515 |
95 |
18 |
0 |
0 |
| OW |
0 |
107 |
129 |
973 |
160 |
9 |
0 |
0 |
| VODI |
0 |
12 |
5 |
1677 |
1613 |
31 |
0 |
0 |
| ODI |
0 |
2 |
0 |
561 |
8462 |
408 |
2 |
0 |
| CDI |
0 |
2 |
0 |
23 |
3283 |
8915 |
373 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
83 |
2921 |
505 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-23:
| 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 |
8729 |
6273 |
397 |
500 |
100 |
26 |
0 |
0 |
| OW |
0 |
139 |
123 |
1130 |
234 |
8 |
0 |
0 |
| VODI |
0 |
9 |
19 |
2004 |
2262 |
35 |
0 |
0 |
| ODI |
0 |
3 |
0 |
630 |
6881 |
1044 |
0 |
0 |
| CDI |
0 |
0 |
0 |
40 |
1355 |
11899 |
0 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
40 |
1986 |
0 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-25:
| 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 |
8255 |
7255 |
483 |
628 |
107 |
17 |
0 |
0 |
| OW |
0 |
55 |
163 |
994 |
164 |
4 |
0 |
0 |
| VODI |
0 |
6 |
3 |
3070 |
1901 |
3 |
0 |
0 |
| ODI |
0 |
2 |
0 |
123 |
7556 |
726 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1686 |
11443 |
474 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
18 |
730 |
0 |
0 |
|
...date precedes bulletin
|
Date: 2023-07-27:
| 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 |
9025 |
7121 |
482 |
585 |
119 |
6 |
0 |
0 |
| OW |
0 |
101 |
173 |
1460 |
225 |
0 |
0 |
0 |
| VODI |
0 |
16 |
2 |
3420 |
2031 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
130 |
6752 |
623 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1703 |
8656 |
1599 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
48 |
807 |
782 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9025 |
7090 |
488 |
710 |
160 |
6 |
0 |
0 |
| OW |
0 |
136 |
161 |
1152 |
204 |
0 |
0 |
0 |
| VODI |
0 |
12 |
8 |
3553 |
2013 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
180 |
6653 |
619 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1810 |
8817 |
1710 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
38 |
650 |
671 |
0 |
|
Date: 2023-07-29:
| 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 |
9231 |
7321 |
485 |
725 |
136 |
3 |
0 |
0 |
| OW |
0 |
174 |
258 |
2012 |
210 |
0 |
0 |
0 |
| VODI |
0 |
11 |
3 |
2636 |
2936 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
75 |
5410 |
1300 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1418 |
6797 |
2408 |
94 |
| VCDI |
0 |
0 |
0 |
0 |
50 |
1352 |
675 |
146 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9231 |
7315 |
494 |
836 |
178 |
3 |
0 |
0 |
| OW |
0 |
182 |
231 |
1488 |
191 |
0 |
0 |
0 |
| VODI |
0 |
9 |
21 |
3023 |
2835 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
101 |
5278 |
1277 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1632 |
7120 |
2469 |
114 |
| VCDI |
0 |
0 |
0 |
0 |
46 |
1052 |
614 |
126 |
|
Date: 2023-07-31:
| 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 |
9547 |
7925 |
524 |
635 |
56 |
3 |
0 |
0 |
| OW |
0 |
88 |
215 |
1088 |
95 |
0 |
0 |
0 |
| VODI |
0 |
4 |
3 |
3882 |
853 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
158 |
7264 |
110 |
0 |
0 |
| CDI |
0 |
0 |
0 |
11 |
673 |
5781 |
167 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
19 |
487 |
4233 |
2045 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9547 |
7680 |
502 |
1039 |
95 |
3 |
0 |
0 |
| OW |
0 |
293 |
201 |
2180 |
297 |
0 |
0 |
0 |
| VODI |
0 |
41 |
39 |
2474 |
2668 |
0 |
0 |
0 |
| ODI |
0 |
3 |
0 |
65 |
4283 |
1450 |
6 |
0 |
| CDI |
0 |
0 |
0 |
16 |
1528 |
4796 |
3263 |
1121 |
| VCDI |
0 |
0 |
0 |
0 |
89 |
132 |
1131 |
924 |
|
Date: 2023-08-02:
| 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 |
9823 |
8154 |
720 |
819 |
61 |
0 |
0 |
0 |
| OW |
0 |
66 |
168 |
1521 |
127 |
0 |
0 |
0 |
| VODI |
0 |
3 |
5 |
3399 |
1557 |
2 |
0 |
0 |
| ODI |
0 |
0 |
1 |
299 |
5074 |
667 |
18 |
0 |
| CDI |
0 |
0 |
0 |
21 |
1015 |
4337 |
1146 |
13 |
| VCDI |
0 |
0 |
0 |
7 |
57 |
153 |
3040 |
3593 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9823 |
7894 |
664 |
1328 |
125 |
0 |
0 |
0 |
| OW |
0 |
295 |
209 |
2431 |
483 |
0 |
0 |
0 |
| VODI |
0 |
33 |
20 |
2132 |
2261 |
22 |
4 |
0 |
| ODI |
0 |
1 |
1 |
143 |
3852 |
1311 |
52 |
0 |
| CDI |
0 |
0 |
0 |
31 |
1085 |
3747 |
3794 |
1913 |
| VCDI |
0 |
0 |
0 |
1 |
85 |
79 |
354 |
1693 |
|
Date: 2023-08-04:
| 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 |
10316 |
8140 |
575 |
908 |
59 |
0 |
0 |
0 |
| OW |
0 |
115 |
214 |
1688 |
147 |
0 |
0 |
0 |
| VODI |
0 |
4 |
5 |
3387 |
1653 |
5 |
0 |
0 |
| ODI |
0 |
0 |
1 |
81 |
4691 |
569 |
7 |
0 |
| CDI |
0 |
0 |
0 |
36 |
1137 |
3591 |
2066 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
26 |
661 |
4380 |
1403 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10316 |
7934 |
572 |
1734 |
190 |
0 |
0 |
0 |
| OW |
0 |
296 |
194 |
2529 |
419 |
0 |
0 |
0 |
| VODI |
0 |
29 |
28 |
1707 |
2222 |
48 |
0 |
0 |
| ODI |
0 |
0 |
1 |
86 |
3592 |
1195 |
360 |
0 |
| CDI |
0 |
0 |
0 |
44 |
1269 |
3524 |
4977 |
536 |
| VCDI |
0 |
0 |
0 |
1 |
21 |
59 |
1116 |
867 |
|
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