Validation of sea ice concentration

Bulletin date: 2022-07-07

Model vs. observations, sea ice class contingency tables

Date: 2022-07-01:

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 18804 7042 1375 778 290 148 134 0
OW 0 57 57 145 157 116 82 0
VODI 0 38 31 65 183 157 169 0
ODI 0 18 16 30 89 156 319 0
CDI 0 35 27 61 105 231 1007 0
VCDI 0 0 13 35 50 97 2993 3049
...date precedes bulletin

Date: 2022-07-05:

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 18849 6956 1970 582 259 172 102 0
OW 0 12 91 151 116 89 61 0
VODI 0 11 21 110 181 210 150 0
ODI 0 7 9 33 79 158 265 0
CDI 0 3 26 56 100 253 1429 292
VCDI 0 0 0 13 25 49 1550 3719
...date precedes bulletin

Date: 2022-07-07:

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 18837 7183 1721 807 258 136 101 0
OW 0 7 40 181 138 86 65 0
VODI 0 7 24 108 167 160 169 0
ODI 0 2 17 27 76 113 213 0
CDI 0 1 7 71 92 292 1552 596
VCDI 0 0 7 27 25 101 1609 3136
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 18837 7181 1711 840 263 152 107 0
OW 0 7 48 144 127 85 56 0
VODI 0 9 27 113 171 146 162 0
ODI 0 1 17 28 86 110 197 0
CDI 0 2 6 70 83 298 1585 580
VCDI 0 0 7 26 26 97 1602 3152

Date: 2022-07-11:

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 18686 7432 1763 812 374 172 96 0
OW 0 3 48 183 140 77 49 0
VODI 0 1 20 92 124 168 117 0
ODI 0 2 4 39 68 138 319 0
CDI 0 0 19 70 69 200 1689 1027
VCDI 0 0 0 1 3 29 1190 2935
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 18686 7417 1714 767 370 189 101 0
OW 0 12 68 182 123 91 60 0
VODI 0 7 25 107 118 143 134 0
ODI 0 2 18 38 70 72 218 0
CDI 0 0 27 101 94 247 1688 871
VCDI 0 0 2 2 3 42 1259 3091

Date: 2022-07-13:

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 19068 6808 2436 779 287 147 69 0
OW 0 2 73 149 122 83 36 0
VODI 0 3 24 96 120 142 110 0
ODI 0 0 2 35 63 125 319 0
CDI 0 0 3 70 113 236 1612 1149
VCDI 0 0 0 2 8 45 1031 2792
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 19068 6800 2358 723 280 172 63 0
OW 0 10 110 172 109 83 37 0
VODI 0 1 47 83 105 103 118 0
ODI 0 2 15 48 74 89 236 0
CDI 0 0 8 104 136 279 1695 1143
VCDI 0 0 0 1 9 52 1028 2798

Date: 2022-07-15:

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 18480 7646 2533 638 210 160 62 0
OW 0 2 121 131 117 67 31 0
VODI 0 3 61 89 96 118 97 0
ODI 0 0 16 34 75 165 239 0
CDI 0 0 15 56 121 254 1593 1271
VCDI 0 0 0 1 4 25 812 2816
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 18480 7619 2468 608 215 166 58 0
OW 0 15 123 144 117 73 33 0
VODI 0 14 74 72 72 82 88 0
ODI 0 3 38 36 67 136 185 0
CDI 0 0 43 88 146 289 1666 1320
VCDI 0 0 0 1 6 43 804 2767


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