Validation of sea ice concentration

Bulletin date: 2018-11-22

Model vs. observations, sea ice class contingency tables

Date: 2018-11-16:

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 19827 6324 631 227 136 44 60 0
OW 0 178 214 167 109 80 12 0
VODI 0 19 126 176 149 254 27 0
ODI 0 0 48 81 86 262 79 6
CDI 0 0 23 32 50 281 258 31
VCDI 0 0 12 47 64 313 3713 4013
...date precedes bulletin

Date: 2018-11-20:

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 19111 6354 693 414 137 44 112 0
OW 0 116 149 169 144 70 11 0
VODI 0 27 44 142 184 260 35 0
ODI 0 0 14 53 106 232 104 0
CDI 0 0 2 41 59 201 350 21
VCDI 0 0 1 15 56 319 4520 3849
...date precedes bulletin

Date: 2018-11-22:

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 17627 6953 772 460 202 103 51 0
OW 0 62 140 162 154 69 12 0
VODI 0 9 65 171 136 235 68 0
ODI 0 0 32 119 111 237 129 1
CDI 0 0 2 68 91 241 395 46
VCDI 0 0 1 75 95 334 4617 4114
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 17627 6938 768 466 213 114 50 0
OW 0 71 127 141 136 57 17 0
VODI 0 15 83 183 142 213 64 0
ODI 0 0 29 119 118 212 121 2
CDI 0 0 4 66 82 263 319 47
VCDI 0 0 1 80 98 360 4701 4112

Date: 2018-11-26:

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 17094 6420 1072 615 213 256 30 0
OW 15 26 39 158 131 113 23 0
VODI 2 12 25 100 149 233 91 0
ODI 0 0 3 39 104 288 272 5
CDI 0 0 0 7 104 356 560 50
VCDI 0 581 15 25 49 399 6301 2184
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 17102 6352 1019 545 217 308 39 0
OW 8 62 70 141 84 112 18 0
VODI 1 37 35 136 106 157 85 0
ODI 0 7 9 48 100 170 208 0
CDI 0 0 6 40 107 243 473 49
VCDI 0 581 15 34 136 655 6454 2190

Date: 2018-11-28:

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 16006 7468 1149 594 202 103 39 0
OW 0 77 72 149 117 79 22 0
VODI 0 35 58 105 112 119 58 0
ODI 0 12 28 59 95 129 115 2
CDI 0 0 14 35 67 256 425 64
VCDI 0 0 0 20 37 358 6141 3738
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 16006 7387 1098 578 211 137 53 0
OW 0 109 100 117 84 60 27 0
VODI 0 58 70 118 107 107 87 0
ODI 0 27 30 62 110 115 134 0
CDI 0 7 16 50 64 199 469 16
VCDI 0 4 7 37 54 426 6030 3788

Date: 2018-11-30:

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 16234 7635 808 432 65 147 71 0
OW 0 80 124 173 68 56 44 0
VODI 0 22 76 125 119 90 47 0
ODI 0 1 36 80 99 128 86 0
CDI 0 0 37 81 77 182 241 48
VCDI 0 0 17 75 142 511 6188 3714
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 16234 7596 781 438 103 179 164 0
OW 0 78 110 130 67 69 55 0
VODI 0 37 75 141 81 164 87 0
ODI 0 12 45 102 102 115 123 8
CDI 0 12 35 65 76 149 303 78
VCDI 0 3 52 90 141 438 5945 3676


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