Validation of sea ice concentration

Bulletin date: 2018-04-05

Model vs. observations, sea ice class contingency tables

Date: 2018-03-30:

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

Date: 2018-04-03:

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 13490 5752 954 408 241 166 55 0
OW 0 1 98 113 84 103 55 0
VODI 0 0 37 64 98 153 95 0
ODI 0 0 5 32 69 197 226 0
CDI 0 0 0 8 42 270 629 53
VCDI 0 0 0 4 37 293 6060 8267
...date precedes bulletin

Date: 2018-04-05:

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 13476 5839 865 392 232 162 23 0
OW 0 19 123 94 89 93 20 0
VODI 0 0 51 95 110 195 60 0
ODI 0 0 9 62 102 277 123 0
CDI 0 0 7 24 92 402 481 39
VCDI 0 0 2 8 51 460 6990 7092
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13476 5843 887 403 231 169 26 0
OW 0 15 102 91 87 92 22 0
VODI 0 0 47 84 108 176 54 0
ODI 0 0 11 67 92 281 125 0
CDI 0 0 8 18 108 367 480 46
VCDI 0 0 2 12 50 504 6990 7085

Date: 2018-04-09:

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 13095 5779 1155 455 190 157 33 0
OW 0 1 102 161 111 102 38 0
VODI 0 0 33 112 207 280 92 0
ODI 0 0 0 41 113 304 215 20
CDI 0 0 0 16 68 400 838 70
VCDI 0 0 0 16 41 474 7227 6213
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13095 5777 1135 445 209 187 36 0
OW 0 3 90 126 73 122 47 0
VODI 0 0 50 93 154 176 101 0
ODI 0 0 14 68 121 246 218 6
CDI 0 0 1 46 93 399 593 77
VCDI 0 0 0 23 80 587 7448 6220

Date: 2018-04-11:

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 13181 5750 1105 536 215 137 16 0
OW 0 1 78 168 124 130 17 0
VODI 0 0 43 132 178 221 64 0
ODI 0 0 12 72 102 255 240 3
CDI 0 0 3 37 95 433 775 93
VCDI 0 0 0 23 87 581 7978 5274
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13181 5750 1068 528 227 171 25 0
OW 0 1 90 132 90 118 30 0
VODI 0 0 51 119 151 165 96 0
ODI 0 0 21 81 105 216 193 1
CDI 0 0 11 77 110 391 620 55
VCDI 0 0 0 31 118 696 8126 5314

Date: 2018-04-13:

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 13420 5740 1098 427 179 86 55 0
OW 0 3 132 166 128 94 68 0
VODI 0 0 56 136 167 192 118 0
ODI 0 0 12 86 122 244 210 6
CDI 0 0 2 43 100 377 742 44
VCDI 0 0 1 12 60 312 8010 5511
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13420 5740 1050 418 200 113 111 0
OW 0 3 131 128 91 78 64 0
VODI 0 0 79 133 107 150 124 0
ODI 0 0 33 82 134 158 183 0
CDI 0 0 7 76 117 351 611 44
VCDI 0 0 1 33 107 455 8110 5517


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