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

Validation of sea ice concentration - European sector

Bulletin date: 2023-11-02

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2023-10-27:

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 82600 4783 120 121 27 0 0 0
OW 2 428 151 318 67 2 0 0
VODI 0 36 55 330 73 4 0 0
ODI 0 5 9 243 163 29 0 0
CDI 0 1 5 87 435 570 240 0
VCDI 0 0 0 2 125 1686 4066 3633
...date precedes bulletin

Date: 2023-10-29:

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 82412 4679 114 118 36 2 0 0
OW 4 475 113 294 110 1 0 0
VODI 0 57 50 214 157 17 0 0
ODI 0 14 18 247 136 51 3 0
CDI 0 1 8 136 309 366 323 0
VCDI 0 0 0 11 197 881 3856 5006
...date precedes bulletin

Date: 2023-10-31:

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 81540 5469 137 119 58 10 0 0
OW 4 337 169 221 93 7 0 0
VODI 0 41 57 430 158 11 0 0
ODI 0 0 1 294 219 65 0 0
CDI 0 0 0 36 331 518 97 0
VCDI 0 0 0 0 79 826 6348 2741
...date precedes bulletin

Date: 2023-11-02:

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 81111 5547 177 177 29 25 0 0
OW 13 261 138 319 91 37 0 0
VODI 1 27 49 328 195 15 0 0
ODI 0 0 3 184 327 51 0 0
CDI 0 0 0 59 360 295 49 0
VCDI 0 0 0 0 88 790 5235 4435
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 81107 5548 183 176 39 30 0 0
OW 17 259 141 324 94 32 0 0
VODI 1 28 38 351 206 22 0 0
ODI 0 0 5 170 327 49 0 0
CDI 0 0 0 46 322 319 84 0
VCDI 0 0 0 0 102 761 5200 4435

Date: 2023-11-04:

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 80395 5932 189 214 32 21 0 0
OW 21 212 177 308 140 24 0 0
VODI 4 16 17 314 198 30 0 0
ODI 0 1 3 98 329 49 1 0
CDI 0 0 0 36 418 453 36 0
VCDI 0 0 0 0 68 952 6370 3358
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 80393 5931 212 226 48 19 0 0
OW 22 210 146 313 140 30 0 0
VODI 5 20 25 303 216 35 0 0
ODI 0 0 3 96 374 62 1 0
CDI 0 0 0 32 357 458 55 0
VCDI 0 0 0 0 50 925 6351 3358

Date: 2023-11-06:

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 79634 6621 172 177 68 0 0 0
OW 47 321 180 216 76 30 1 0
VODI 4 2 30 360 195 6 0 0
ODI 0 0 5 90 329 62 0 0
CDI 0 0 0 60 233 751 42 0
VCDI 0 0 0 6 68 960 5689 3981
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 79648 6473 193 204 46 1 0 0
OW 25 364 101 216 157 32 1 0
VODI 11 89 60 229 199 15 0 0
ODI 1 18 20 157 226 95 0 0
CDI 0 0 13 84 242 757 89 0
VCDI 0 0 0 19 99 909 5642 3981

Date: 2023-11-08:

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 79136 6568 262 224 55 0 0 0
OW 74 318 130 276 108 26 1 0
VODI 3 20 54 301 209 34 0 0
ODI 0 2 7 118 308 61 0 0
CDI 0 0 0 61 333 795 171 0
VCDI 0 0 0 0 13 828 6311 3609
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 79145 6386 228 222 59 0 0 0
OW 54 375 126 260 154 39 1 0
VODI 14 134 67 210 215 29 0 0
ODI 0 13 27 202 263 157 0 0
CDI 0 0 5 83 273 699 569 0
VCDI 0 0 0 3 62 820 5913 3609

Date: 2023-11-10:

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 78431 6759 245 265 42 0 0 0
OW 103 346 168 312 147 47 0 0
VODI 21 30 47 323 189 91 1 0
ODI 0 1 1 126 250 98 0 0
CDI 0 0 0 43 245 702 229 0
VCDI 0 0 0 0 35 817 6533 3769
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78407 6393 207 302 45 0 0 0
OW 134 606 159 242 182 61 0 0
VODI 14 126 77 265 197 86 1 0
ODI 0 11 18 177 185 148 0 0
CDI 0 0 0 83 254 605 495 12
VCDI 0 0 0 0 45 855 6267 3757


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