Validation of sea ice concentration

Bulletin date: 2019-11-21

Model vs. observations, sea ice class contingency tables

Date: 2019-11-15:

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 15296 7151 1445 600 190 146 82 0
OW 0 13 232 279 179 85 46 0
VODI 0 2 55 201 200 242 88 0
ODI 0 0 18 58 140 215 153 0
CDI 0 0 13 42 56 236 465 2
VCDI 0 0 11 32 74 390 5899 3823
...date precedes bulletin

Date: 2019-11-19:

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 15563 7302 1120 504 144 83 30 0
OW 0 32 197 283 165 94 30 0
VODI 0 20 63 246 216 253 149 0
ODI 0 8 13 118 180 313 285 0
CDI 0 4 15 37 95 338 667 6
VCDI 0 2 7 28 48 509 6031 2961
...date precedes bulletin

Date: 2019-11-21:

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 15343 7041 1267 395 230 165 45 0
OW 0 22 262 173 156 126 24 0
VODI 0 11 66 216 278 326 74 0
ODI 0 4 16 118 188 380 193 0
CDI 0 2 16 46 110 502 556 5
VCDI 0 1 7 26 61 370 5960 3378
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 15343 7045 1351 420 244 182 50 0
OW 0 20 201 171 159 107 22 0
VODI 0 9 42 205 277 317 76 0
ODI 0 4 16 107 169 395 218 0
CDI 0 2 16 44 109 468 506 5
VCDI 0 1 8 27 65 400 5980 3378

Date: 2019-11-25:

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 14749 6962 959 576 367 265 70 0
OW 0 30 108 174 101 136 46 0
VODI 0 3 84 154 152 241 155 0
ODI 0 0 9 64 122 312 301 1
CDI 0 0 5 32 57 363 1092 9
VCDI 0 0 1 12 24 470 6375 3578
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 14749 6960 972 615 402 338 79 0
OW 0 22 86 145 74 138 41 0
VODI 0 13 71 118 135 231 178 0
ODI 0 0 23 73 97 224 289 1
CDI 0 0 9 30 58 244 672 3
VCDI 0 0 5 31 57 612 6780 3584

Date: 2019-11-27:

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 14343 6819 1132 501 278 348 142 0
OW 0 20 78 82 112 144 61 0
VODI 0 3 35 65 143 188 105 0
ODI 0 0 15 28 105 215 277 0
CDI 0 0 5 13 83 252 683 11
VCDI 0 0 3 8 28 208 5568 6058
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 14343 6836 1159 511 327 437 180 0
OW 0 5 58 75 103 115 75 0
VODI 0 0 29 58 122 174 187 0
ODI 0 1 13 29 83 197 322 0
CDI 0 0 4 13 76 195 682 4
VCDI 0 0 5 11 38 237 5390 6065

Date: 2019-11-29:

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 14102 6588 1286 552 208 317 205 4
OW 0 19 95 109 55 122 102 1
VODI 0 4 37 101 66 156 126 1
ODI 0 0 4 31 45 152 169 2
CDI 0 0 2 25 42 139 555 43
VCDI 0 0 1 10 28 235 6179 6241
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 14102 6603 1284 571 228 398 322 4
OW 0 7 79 85 51 124 74 1
VODI 0 1 41 74 46 149 152 1
ODI 0 0 13 35 30 125 267 1
CDI 0 0 7 41 45 130 597 28
VCDI 0 0 1 22 44 195 5924 6257


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