Validation of sea ice concentration

Bulletin date: 2018-08-30

Model vs. observations, sea ice class contingency tables

Date: 2018-08-24:

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 26809 5012 496 333 110 26 36 0
OW 0 55 50 122 143 27 11 0
VODI 0 12 32 94 216 75 43 0
ODI 0 0 2 29 152 225 244 0
CDI 0 0 0 0 26 317 1924 436
VCDI 0 0 0 0 0 1 376 725
...date precedes bulletin

Date: 2018-08-28:

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 26580 5179 460 411 58 27 41 0
OW 0 35 48 147 76 23 13 0
VODI 0 6 29 138 125 90 52 0
ODI 0 0 5 49 101 200 249 0
CDI 0 17 1 15 19 173 2916 103
VCDI 0 350 6 10 14 12 381 0
...date precedes bulletin

Date: 2018-08-30:

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 26517 5128 549 447 60 40 31 0
OW 0 13 33 160 122 26 15 0
VODI 0 0 15 110 183 136 46 0
ODI 0 0 6 36 112 212 236 0
CDI 0 0 1 2 20 145 2692 349
VCDI 0 138 6 16 14 8 535 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 26517 5128 554 458 64 39 26 0
OW 0 13 28 156 115 32 20 0
VODI 0 0 16 106 190 131 50 0
ODI 0 0 5 33 114 209 243 0
CDI 0 15 2 5 15 150 2648 349
VCDI 0 123 5 13 13 6 568 0

Date: 2018-09-03:

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 24763 6357 1124 369 97 22 19 0
OW 0 10 42 123 78 12 7 0
VODI 0 3 29 124 179 63 26 0
ODI 0 0 3 64 174 167 107 0
CDI 0 0 0 1 21 101 1480 516
VCDI 0 0 0 0 1 5 894 1178
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 24763 6361 1129 361 87 23 14 0
OW 0 8 37 134 115 27 12 0
VODI 0 1 27 114 184 102 54 0
ODI 0 0 5 72 154 163 247 0
CDI 0 0 0 0 10 54 2197 840
VCDI 0 0 0 0 0 1 9 854

Date: 2018-09-05:

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 24223 6941 951 399 107 19 6 0
OW 0 19 40 111 84 15 8 0
VODI 0 1 22 112 177 49 25 0
ODI 0 0 2 59 199 128 79 0
CDI 0 0 0 2 48 171 1450 221
VCDI 0 0 0 0 3 13 1006 1469
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 24223 6920 936 397 110 19 2 0
OW 0 32 39 119 110 34 7 0
VODI 0 9 34 94 201 94 59 0
ODI 0 0 6 73 168 153 184 0
CDI 0 0 0 0 29 94 2223 400
VCDI 0 0 0 0 0 1 99 1290

Date: 2018-09-07:

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 24704 6469 787 442 78 16 5 0
OW 0 19 47 130 47 13 7 0
VODI 0 3 17 156 160 46 14 0
ODI 0 0 3 82 153 119 76 0
CDI 0 0 0 4 63 155 1389 131
VCDI 0 0 0 0 10 21 1067 1726
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 24704 6448 769 498 93 21 2 0
OW 0 32 50 119 102 34 10 0
VODI 0 9 31 108 165 106 69 0
ODI 0 2 4 87 120 118 238 0
CDI 0 0 0 2 30 86 1753 87
VCDI 0 0 0 0 1 5 486 1770


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