Description of algorithm
Full domain
American sector
European sector
  Ice concntr, edge pos
  Contingency tables
Asian sector

Validation of sea ice concentration - European sector

Bulletin date: 2023-01-19

Data source: OSI SAF N.H. AMSR sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2023-01-13:

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 57885 22788 7240 242 102 63 54 0
OW 79 567 402 179 70 39 31 0
VODI 1 356 376 321 170 53 13 0
ODI 0 73 179 290 240 80 30 0
CDI 0 35 83 241 308 212 72 0
VCDI 0 27 113 392 891 2792 10568 1443
...date precedes bulletin

Date: 2023-01-15:

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 57598 22236 7095 567 84 71 37 0
OW 63 330 688 221 95 40 27 0
VODI 0 185 575 275 187 62 34 0
ODI 0 46 372 252 197 82 47 0
CDI 0 9 168 299 279 210 139 0
VCDI 0 4 145 542 1101 3422 10188 1128
...date precedes bulletin

Date: 2023-01-17:

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 55475 23578 7804 711 116 42 22 0
OW 63 339 425 360 66 24 8 0
VODI 0 183 301 496 253 73 18 0
ODI 0 66 146 297 281 132 16 0
CDI 0 24 120 251 338 255 53 0
VCDI 0 4 91 389 1063 3548 9270 2399
...date precedes bulletin

Date: 2023-01-19:

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 54236 24983 8286 206 50 34 20 0
OW 64 475 359 223 83 14 9 0
VODI 0 293 267 401 188 71 5 0
ODI 0 118 148 283 215 120 8 0
CDI 0 47 104 269 259 167 26 0
VCDI 0 40 107 410 1166 2975 8758 3613
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 54237 25005 8307 215 54 35 20 0
OW 63 423 310 197 76 13 10 0
VODI 0 311 273 363 168 82 4 0
ODI 0 133 154 319 217 110 11 0
CDI 0 46 113 270 274 170 24 0
VCDI 0 38 114 428 1172 2971 8757 3613

Date: 2023-01-21:

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 58786 24326 4094 324 94 40 13 0
OW 75 509 310 273 113 44 14 0
VODI 0 360 241 355 252 107 13 0
ODI 0 154 102 292 240 130 15 0
CDI 0 98 56 252 225 186 61 0
VCDI 0 128 177 392 798 2500 9686 3265
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 58785 24345 4082 343 113 45 8 0
OW 76 447 299 253 99 57 24 0
VODI 0 368 240 318 205 96 10 0
ODI 0 169 123 294 253 118 15 0
CDI 0 114 59 278 235 169 73 0
VCDI 0 132 177 402 817 2522 9672 3265

Date: 2023-01-23:

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 57190 23817 6361 439 93 16 0 0
OW 74 248 345 338 96 23 0 0
VODI 0 138 243 679 418 58 3 0
ODI 0 90 126 281 453 137 0 0
CDI 0 59 137 245 353 343 60 0
VCDI 0 27 79 297 710 3964 7888 3272
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 57188 23315 6001 473 136 39 0 0
OW 76 400 328 213 138 48 3 0
VODI 0 253 350 496 320 118 0 0
ODI 0 197 171 289 302 120 9 0
CDI 0 131 154 261 240 211 98 0
VCDI 0 83 287 547 987 4005 7841 3272

Date: 2023-01-25:

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 55633 22566 8636 830 105 23 1 0
OW 73 195 249 315 149 23 4 0
VODI 0 138 229 465 345 60 14 0
ODI 0 102 99 259 395 117 24 0
CDI 0 56 117 238 466 316 168 0
VCDI 0 18 60 387 837 3974 10140 1274
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 55628 21993 8270 620 133 43 4 0
OW 78 413 265 182 100 68 21 0
VODI 0 297 302 430 199 91 27 0
ODI 0 181 193 371 392 79 54 0
CDI 0 99 184 255 373 235 144 0
VCDI 0 92 176 636 1100 3997 10101 1274

Date: 2023-01-27:

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 55096 25658 5416 1052 181 21 9 0
OW 63 189 199 278 215 49 16 0
VODI 0 145 115 339 298 118 20 0
ODI 0 63 82 257 432 175 36 0
CDI 0 12 56 189 454 360 162 0
VCDI 0 0 22 263 910 3800 9527 2823
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 55108 25062 5134 855 150 61 12 0
OW 51 341 246 188 82 65 39 0
VODI 0 264 163 310 174 59 58 0
ODI 0 210 99 218 291 96 76 0
CDI 0 136 86 213 535 323 110 0
VCDI 0 54 162 594 1258 3919 9475 2823


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