Validation of sea ice concentration

Bulletin date: 2020-05-21

Model vs. observations, sea ice class contingency tables

Date: 2020-05-15:

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 12179 6513 1494 1605 633 176 117 0
OW 0 4 162 338 239 232 102 0
VODI 0 0 83 264 334 332 290 7
ODI 0 0 52 127 217 289 366 7
CDI 0 0 41 113 214 554 836 6
VCDI 0 0 32 78 186 313 5484 4140
...date precedes bulletin

Date: 2020-05-19:

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 12914 6459 1896 1503 618 214 126 0
OW 0 15 207 273 243 138 92 3
VODI 0 2 82 135 328 413 202 11
ODI 0 0 36 75 157 326 461 2
CDI 0 0 44 120 131 225 1985 0
VCDI 0 0 2 10 26 59 4354 4272
...date precedes bulletin

Date: 2020-05-21:

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

Date: 2020-05-25:

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 14002 6664 1535 1389 604 316 152 0
OW 0 7 96 192 155 151 136 7
VODI 0 0 28 164 185 235 258 8
ODI 0 0 2 41 120 269 904 1
CDI 0 0 0 25 34 227 2606 0
VCDI 0 0 0 13 13 58 3354 4208
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 14002 6647 1516 1422 731 461 289 4
OW 0 16 77 118 116 212 374 9
VODI 0 8 51 159 114 154 590 2
ODI 0 0 15 69 86 133 954 1
CDI 0 0 2 40 49 185 2259 0
VCDI 0 0 0 16 15 111 2944 4208

Date: 2020-05-27:

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 14199 6761 1696 1367 747 201 126 1
OW 0 13 50 162 257 170 134 11
VODI 0 4 23 96 249 310 372 2
ODI 0 0 5 44 98 287 966 1
CDI 0 0 2 30 83 248 2540 0
VCDI 0 0 0 6 8 18 2663 4209
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 14199 6743 1635 1344 906 394 289 1
OW 0 20 76 130 149 207 332 11
VODI 0 14 48 126 169 166 653 2
ODI 0 1 14 45 99 182 1040 1
CDI 0 0 3 47 108 250 1932 0
VCDI 0 0 0 13 11 35 2555 4209

Date: 2020-05-29:

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 14451 6733 1721 1464 651 192 135 8
OW 0 11 46 180 261 185 169 4
VODI 0 1 34 112 208 357 515 2
ODI 0 0 8 68 98 207 1166 1
CDI 0 0 1 40 95 157 2565 0
VCDI 0 0 3 10 8 12 2147 4133
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 14451 6717 1690 1447 823 419 397 0
OW 0 25 52 162 127 158 377 12
VODI 0 3 45 127 165 185 706 2
ODI 0 0 21 55 86 170 1029 1
CDI 0 0 2 73 110 162 1944 0
VCDI 0 0 3 10 10 16 2244 4133


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