Validation of sea ice concentration

Bulletin date: 2022-04-21

Model vs. observations, sea ice class contingency tables

Date: 2022-04-15:

Best estimate Forecast
...observations not yet available ...observations not yet available

Date: 2022-04-19:

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 13183 5794 958 273 194 71 37 0
OW 0 33 214 145 118 93 52 0
VODI 0 3 159 133 172 180 90 0
ODI 0 0 37 54 107 238 130 0
CDI 0 0 4 41 78 352 746 23
VCDI 0 0 3 12 51 325 7909 6147
...date precedes bulletin

Date: 2022-04-21:

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 13283 5729 923 309 131 46 33 0
OW 0 51 258 149 107 83 56 0
VODI 0 5 183 172 117 111 117 3
ODI 0 0 24 76 98 138 189 1
CDI 0 0 11 62 87 202 904 23
VCDI 0 0 7 23 36 271 8041 6100
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13283 5739 925 331 136 52 34 0
OW 0 37 284 148 103 76 52 3
VODI 0 9 144 149 123 121 134 0
ODI 0 0 28 65 91 126 203 1
CDI 0 0 18 73 83 204 835 24
VCDI 0 0 7 25 40 272 8082 6099

Date: 2022-04-25:

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 12632 5773 1262 454 174 102 7 0
OW 0 6 139 246 141 90 38 0
VODI 0 0 52 137 182 203 84 0
ODI 0 0 5 43 93 242 129 0
CDI 0 0 2 21 104 493 819 2
VCDI 0 0 6 24 59 659 7809 5927
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12632 5766 1240 483 178 105 23 0
OW 0 10 130 182 134 103 56 0
VODI 0 3 57 134 164 246 104 0
ODI 0 0 21 53 87 209 161 0
CDI 0 0 9 48 124 389 870 1
VCDI 0 0 9 25 66 737 7672 5928

Date: 2022-04-27:

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 12352 5878 1231 579 252 113 16 0
OW 0 2 103 165 144 100 39 0
VODI 0 0 21 128 191 201 107 0
ODI 0 0 4 28 70 208 187 2
CDI 0 0 3 15 64 376 1057 30
VCDI 0 0 5 10 53 327 7109 6989
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12352 5841 1090 543 267 156 36 0
OW 0 35 167 137 117 88 60 0
VODI 0 3 74 138 169 200 146 0
ODI 0 1 17 59 84 166 215 5
CDI 0 0 16 32 84 354 1015 68
VCDI 0 0 3 16 53 361 7043 6948

Date: 2022-04-29:

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 12141 5992 1183 507 236 146 98 0
OW 0 44 245 124 107 84 82 0
VODI 0 0 98 144 128 134 204 0
ODI 0 0 15 108 115 127 331 3
CDI 0 0 9 61 135 213 968 31
VCDI 0 0 6 72 128 292 8070 5778
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12141 5976 1152 514 242 178 134 0
OW 0 52 184 91 93 73 127 0
VODI 0 8 140 129 111 121 225 0
ODI 0 0 45 111 119 100 319 10
CDI 0 0 32 85 147 175 816 20
VCDI 0 0 3 86 137 349 8132 5782


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