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: 2023-12-28

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

Model vs. observations, sea ice class contingency tables

Date: 2023-12-22:

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 67688 10560 333 302 13 0 0 0
OW 3 552 244 501 131 0 0 0
VODI 0 149 92 592 236 27 0 0
ODI 1 38 36 308 440 101 5 0
CDI 3 8 5 288 1025 1548 663 0
VCDI 6 0 0 15 472 3624 5774 4633
...date precedes bulletin

Date: 2023-12-24:

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 67653 10335 254 188 4 0 0 0
OW 26 654 211 525 71 0 0 0
VODI 1 260 82 493 287 1 0 0
ODI 0 92 59 295 386 55 0 0
CDI 1 41 47 331 826 1159 477 0
VCDI 9 0 0 55 497 3640 6160 5241
...date precedes bulletin

Date: 2023-12-26:

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 67665 10450 181 153 11 0 0 0
OW 104 896 313 349 76 0 0 0
VODI 4 194 166 615 206 6 0 0
ODI 0 18 22 373 389 24 0 0
CDI 1 4 4 276 895 906 75 0
VCDI 9 0 0 48 562 3945 6578 4898
...date precedes bulletin

Date: 2023-12-28:

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 67569 10368 204 184 8 0 0 0
OW 178 980 198 324 76 3 0 0
VODI 2 358 156 480 146 23 0 0
ODI 0 84 68 323 326 50 0 0
CDI 0 44 43 295 699 796 260 0
VCDI 10 0 7 198 643 3770 7044 4499
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 67567 10453 212 192 6 0 0 0
OW 180 902 187 325 79 3 0 0
VODI 2 357 159 464 148 24 0 0
ODI 0 83 69 327 321 44 0 0
CDI 0 39 42 308 712 814 264 0
VCDI 10 0 7 188 632 3757 7040 4499

Date: 2023-12-30:

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 67450 10261 171 238 14 0 0 0
OW 155 991 162 243 95 7 0 0
VODI 3 451 139 448 170 21 0 0
ODI 0 174 52 297 367 61 0 0
CDI 0 131 55 287 718 858 406 0
VCDI 0 42 57 281 859 3551 6736 4465
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 67439 10312 192 242 15 0 0 0
OW 167 941 144 249 95 7 0 0
VODI 2 450 133 427 167 23 0 0
ODI 0 172 53 291 349 61 0 0
CDI 0 134 65 292 734 852 425 0
VCDI 0 41 49 293 863 3555 6717 4465

Date: 2024-01-01:

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 66196 11502 162 243 12 0 0 0
OW 154 1356 260 276 97 0 0 0
VODI 3 241 118 660 247 8 0 0
ODI 0 68 45 256 503 51 0 0
CDI 0 53 73 379 862 1236 66 0
VCDI 0 4 5 138 535 2428 7842 4337
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 66193 11053 147 247 16 0 0 0
OW 158 974 155 255 116 0 0 0
VODI 2 628 125 372 250 6 0 0
ODI 0 299 66 330 308 64 0 0
CDI 0 201 87 347 797 973 227 0
VCDI 0 69 83 401 769 2680 7681 4337

Date: 2024-01-03:

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 65590 11701 218 174 0 0 0 0
OW 260 827 370 500 63 0 0 0
VODI 98 214 120 736 197 13 0 0
ODI 0 119 40 382 363 46 0 0
CDI 0 23 7 313 1098 978 187 0
VCDI 0 5 0 88 511 2825 7635 4715
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 65639 10892 197 120 1 0 0 0
OW 195 1030 184 382 55 0 0 0
VODI 112 541 207 487 146 9 0 0
ODI 2 249 83 527 264 46 0 0
CDI 0 164 73 493 1206 628 234 0
VCDI 0 13 11 184 560 3179 7588 4715

Date: 2024-01-05:

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 64248 11898 329 273 7 0 0 0
OW 195 751 283 563 106 0 0 0
VODI 146 375 154 612 339 24 0 0
ODI 53 134 38 319 467 65 0 0
CDI 0 133 19 268 862 1106 419 0
VCDI 0 0 0 80 354 2652 7998 5146
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 64271 10846 237 250 12 0 0 0
OW 187 1219 204 291 121 0 0 0
VODI 157 584 183 523 220 31 0 0
ODI 27 334 84 410 418 96 0 0
CDI 0 272 93 481 978 1214 473 0
VCDI 0 36 22 160 386 2506 7944 5146


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