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: 2023-12-07

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

Model vs. observations, sea ice class contingency tables

Date: 2023-12-01:

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 72114 8233 116 155 181 89 0 0
OW 968 986 122 135 60 98 0 0
VODI 2688 410 148 282 168 125 2 0
ODI 716 126 102 299 278 256 21 0
CDI 0 51 25 132 357 1130 355 0
VCDI 0 25 15 55 151 1240 7441 3007
...date precedes bulletin

Date: 2023-12-03:

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 71068 8886 195 248 185 68 0 0
OW 893 703 178 231 126 55 0 0
VODI 2486 249 158 338 325 122 6 0
ODI 1062 63 52 297 270 261 10 0
CDI 0 28 21 160 353 1110 349 0
VCDI 0 24 17 44 133 1293 8151 2644
...date precedes bulletin

Date: 2023-12-05:

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 70933 9210 204 195 140 36 0 0
OW 926 575 166 311 126 9 0 0
VODI 2424 149 113 342 408 98 0 0
ODI 1135 17 23 181 464 281 18 0
CDI 0 11 8 72 343 1057 376 0
VCDI 0 14 8 15 93 1355 8546 2480
...date precedes bulletin

Date: 2023-12-07:

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 68932 11107 276 226 61 46 0 0
OW 869 527 175 361 130 32 0 0
VODI 2376 106 99 292 347 130 8 0
ODI 1200 27 26 134 250 367 61 0
CDI 0 15 12 119 213 813 455 0
VCDI 0 46 15 50 152 1333 8001 3473
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 68923 11208 288 256 71 52 0 0
OW 878 424 155 321 131 34 0 0
VODI 2380 112 105 291 326 125 3 0
ODI 1196 26 31 153 262 346 57 0
CDI 0 13 9 115 215 837 421 0
VCDI 0 45 15 46 148 1327 8044 3473

Date: 2023-12-09:

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 69224 10124 265 327 161 42 8 0
OW 944 548 149 289 215 115 0 0
VODI 2429 164 91 223 282 256 21 0
ODI 1010 70 26 100 186 422 72 0
CDI 0 78 25 77 248 1041 547 0
VCDI 0 111 41 154 166 1036 7733 3842
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 69214 10199 273 344 186 55 8 0
OW 955 464 138 255 202 109 0 0
VODI 2436 164 95 229 256 235 16 0
ODI 1002 79 24 121 181 428 64 0
CDI 0 72 28 77 270 1069 593 0
VCDI 0 117 39 144 163 1016 7700 3842

Date: 2023-12-11:

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 68414 10570 298 222 72 21 4 0
OW 928 735 212 275 80 19 9 0
VODI 2357 279 151 464 318 48 14 0
ODI 1101 64 32 192 372 260 24 0
CDI 0 98 37 162 253 1446 502 0
VCDI 0 2 2 46 174 790 9639 2176
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 68358 10399 349 290 128 28 16 0
OW 852 639 143 306 160 60 18 0
VODI 2254 313 115 253 239 165 28 0
ODI 1336 122 52 184 226 423 64 0
CDI 0 178 34 155 273 1001 648 0
VCDI 0 97 39 173 243 907 9418 2176

Date: 2023-12-13:

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 67605 10656 177 200 42 7 0 0
OW 841 665 224 348 168 38 0 0
VODI 2173 257 142 404 406 129 4 0
ODI 1430 69 60 275 384 229 25 0
CDI 0 40 42 188 619 1770 588 0
VCDI 0 2 5 15 77 1462 8670 2426
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 67667 10422 166 204 89 50 1 0
OW 914 742 174 289 251 97 12 0
VODI 2304 309 160 337 320 208 38 0
ODI 1164 89 63 242 292 424 56 0
CDI 0 99 63 262 532 1458 757 0
VCDI 0 28 24 96 212 1398 8423 2426

Date: 2023-12-15:

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 68415 9764 134 127 42 6 4 0
OW 907 863 158 243 167 21 6 0
VODI 2252 393 119 336 421 188 11 0
ODI 1230 189 65 218 291 244 31 0
CDI 0 186 113 383 474 953 657 0
VCDI 0 8 10 50 162 2637 8558 1826
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 68412 9160 120 141 112 42 5 0
OW 910 976 130 185 120 97 33 0
VODI 2235 666 125 306 386 214 56 0
ODI 1247 275 75 216 288 353 204 0
CDI 0 254 100 318 351 689 867 0
VCDI 0 72 49 191 300 2654 8102 1826


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