Validation of sea ice concentration

Bulletin date: 2019-10-17

Model vs. observations, sea ice class contingency tables

Date: 2019-10-11:

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 23208 6176 769 417 161 29 1 0
OW 0 74 105 91 80 47 0 0
VODI 0 8 46 82 97 91 14 0
ODI 0 0 5 51 150 122 38 0
CDI 0 0 0 36 116 218 378 0
VCDI 0 0 0 2 27 369 3100 2051
...date precedes bulletin

Date: 2019-10-15:

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 22242 6359 671 287 267 164 35 0
OW 0 57 167 77 65 75 35 0
VODI 0 5 43 63 57 138 73 0
ODI 0 0 7 18 43 77 138 0
CDI 0 0 1 6 28 172 389 0
VCDI 0 0 0 1 0 154 3447 2798
...date precedes bulletin

Date: 2019-10-17:

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 21300 6647 826 372 259 144 104 0
OW 0 111 159 100 94 54 53 0
VODI 0 2 68 67 117 101 113 0
ODI 0 0 10 21 28 88 176 0
CDI 0 0 3 5 13 84 339 8
VCDI 0 0 0 1 15 169 2704 3804
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 21300 6708 871 391 272 153 122 0
OW 0 48 114 70 71 46 50 0
VODI 0 4 69 72 126 94 98 0
ODI 0 0 9 24 27 89 163 0
CDI 0 0 2 8 14 80 317 20
VCDI 0 0 1 1 16 178 2739 3792

Date: 2019-10-21:

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 21120 6456 988 325 188 167 63 0
OW 0 20 125 53 73 87 27 0
VODI 0 4 37 45 103 115 64 0
ODI 0 0 19 24 49 92 96 0
CDI 0 0 6 12 32 83 249 33
VCDI 0 0 0 3 24 358 3155 3864
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 21120 6451 1015 309 172 195 85 0
OW 0 26 98 59 58 51 41 0
VODI 0 3 25 45 107 117 75 0
ODI 0 0 22 25 57 75 78 0
CDI 0 0 11 10 33 72 169 35
VCDI 0 0 4 14 42 392 3206 3862

Date: 2019-10-23:

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 20895 6721 694 337 154 85 73 0
OW 0 42 146 70 71 75 50 0
VODI 0 8 63 66 89 134 49 0
ODI 0 0 11 33 66 101 63 0
CDI 0 0 5 15 42 90 146 0
VCDI 0 0 8 15 61 362 3740 3579
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 20895 6678 720 324 147 95 106 0
OW 0 93 135 70 63 60 41 0
VODI 0 0 46 48 82 129 68 0
ODI 0 0 15 50 67 109 52 0
CDI 0 0 6 26 53 74 160 1
VCDI 0 0 5 18 71 380 3694 3578

Date: 2019-10-25:

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 20717 6711 569 368 143 65 38 0
OW 0 89 138 149 57 33 37 0
VODI 0 23 75 139 98 127 32 0
ODI 0 3 10 78 64 106 40 0
CDI 0 1 10 33 75 118 127 0
VCDI 0 3 6 18 87 612 4238 2922
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 20717 6512 584 402 154 68 55 0
OW 0 290 139 115 59 36 30 0
VODI 0 15 58 143 90 144 37 0
ODI 0 8 6 61 69 104 44 0
CDI 0 3 9 37 58 127 111 0
VCDI 0 2 12 27 94 582 4235 2922


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