Validation of sea ice concentration

Bulletin date: 2019-03-21

Model vs. observations, sea ice class contingency tables

Date: 2019-03-15:

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 12882 5823 730 400 171 114 103 0
OW 0 59 146 93 68 59 69 0
VODI 0 17 113 86 97 84 123 0
ODI 0 7 69 86 108 165 182 0
CDI 0 2 28 67 102 208 542 30
VCDI 0 0 10 68 140 306 6399 8403
...date precedes bulletin

Date: 2019-03-19:

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 13063 5983 818 388 129 92 92 0
OW 0 48 173 181 77 73 50 0
VODI 0 8 170 228 138 112 98 0
ODI 0 0 55 157 125 170 180 3
CDI 0 0 20 122 146 307 451 40
VCDI 0 0 13 65 108 509 8231 5536
...date precedes bulletin

Date: 2019-03-21:

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 13468 5805 687 277 129 93 76 0
OW 0 110 152 168 107 98 81 0
VODI 0 41 143 169 122 139 176 0
ODI 0 2 56 118 113 140 299 13
CDI 0 0 19 80 117 183 582 111
VCDI 0 0 4 45 107 254 7377 6498
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13468 5815 688 283 135 87 83 0
OW 0 109 175 164 113 99 71 0
VODI 0 31 123 172 124 151 185 0
ODI 0 3 50 118 104 130 302 12
CDI 0 0 20 70 112 185 596 113
VCDI 0 0 5 50 107 255 7354 6497

Date: 2019-03-25:

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 13172 5901 974 449 115 38 66 0
OW 0 33 272 232 122 69 64 0
VODI 0 5 226 310 229 199 176 0
ODI 0 0 53 141 187 219 336 13
CDI 0 0 25 107 170 276 709 43
VCDI 0 0 24 49 94 416 7214 5431
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13172 5887 909 408 123 50 76 0
OW 0 32 277 187 126 82 73 0
VODI 0 12 192 233 130 115 147 0
ODI 0 8 90 159 114 142 212 6
CDI 0 0 67 136 196 239 544 25
VCDI 0 0 39 165 228 589 7513 5456

Date: 2019-03-27:

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 13406 5869 1003 387 74 64 65 0
OW 0 24 274 264 109 78 85 0
VODI 0 12 146 327 162 142 123 0
ODI 0 0 53 219 143 158 243 8
CDI 0 0 20 140 170 248 710 21
VCDI 0 0 3 108 183 430 7648 5040
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13406 5811 877 284 50 56 46 0
OW 0 50 227 192 79 65 59 0
VODI 0 30 201 304 120 112 131 0
ODI 0 11 103 209 119 135 187 5
CDI 0 3 60 191 142 169 514 18
VCDI 0 0 31 265 331 583 7937 5046

Date: 2019-03-29:

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 13130 5983 1177 505 54 36 100 0
OW 0 41 320 267 112 78 81 0
VODI 0 8 167 261 159 175 143 0
ODI 0 1 51 140 111 149 226 5
CDI 0 0 22 120 140 212 641 35
VCDI 0 0 19 115 146 380 7665 5184
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13130 5905 976 389 39 25 42 0
OW 0 70 262 159 53 39 69 0
VODI 0 44 239 251 136 116 123 0
ODI 0 11 130 168 92 117 193 5
CDI 0 3 95 181 128 139 453 34
VCDI 0 0 54 260 274 594 7976 5185


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