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: 2024-07-25

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

Model vs. observations, sea ice class contingency tables

Date: 2024-07-19:

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 76743 7948 123 59 0 0 0 0
OW 1607 1602 262 217 18 0 0 0
VODI 2455 405 321 1070 603 25 0 0
ODI 0 5 25 424 1067 128 3 0
CDI 0 0 0 7 457 6832 44 0
VCDI 0 0 0 0 0 412 0 0
...date precedes bulletin

Date: 2024-07-21:

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 77971 6961 92 43 2 0 0 0
OW 1658 1534 261 276 18 1 0 0
VODI 2413 449 250 1164 498 25 2 0
ODI 0 16 50 393 887 91 18 0
CDI 0 1 3 18 723 6374 65 0
VCDI 0 0 0 0 0 605 0 0
...date precedes bulletin

Date: 2024-07-23:

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 78817 7065 99 65 3 0 0 0
OW 1737 1252 292 204 9 0 0 0
VODI 2322 168 291 1352 465 4 0 0
ODI 0 6 8 261 912 202 2 0
CDI 0 0 0 0 199 5954 364 0
VCDI 0 0 0 0 0 271 538 0
...date precedes bulletin

Date: 2024-07-25:

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 79303 6848 92 66 0 0 0 0
OW 1826 1190 264 204 12 0 0 0
VODI 2272 294 300 1373 302 5 0 0
ODI 0 20 40 337 762 113 1 0
CDI 0 0 0 4 1032 5466 31 0
VCDI 0 0 0 0 0 372 333 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 79327 6899 108 66 0 0 0 0
OW 1791 1164 268 233 12 0 0 0
VODI 2283 268 281 1382 301 5 0 0
ODI 0 21 39 300 735 113 2 0
CDI 0 0 0 3 1060 5418 32 0
VCDI 0 0 0 0 0 420 331 0

Date: 2024-07-27:

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 79902 6591 70 48 0 0 0 0
OW 1917 1251 240 263 16 0 0 0
VODI 2095 345 291 1340 176 18 0 0
ODI 0 47 58 340 597 118 9 0
CDI 0 0 2 9 1619 4969 211 0
VCDI 0 0 0 0 0 43 277 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 79854 6691 81 61 2 0 0 0
OW 1816 1188 268 299 23 0 0 0
VODI 2244 306 258 1312 166 16 0 0
ODI 0 48 53 318 569 120 10 0
CDI 0 1 1 10 1648 4996 218 0
VCDI 0 0 0 0 0 16 269 0

Date: 2024-07-29:

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 78434 8976 87 53 3 0 0 0
OW 1934 1081 347 362 12 0 0 0
VODI 2032 134 234 1319 249 16 0 0
ODI 0 0 4 112 1721 329 0 0
CDI 0 0 0 0 302 4788 100 0
VCDI 0 0 0 0 0 19 214 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78415 8517 54 37 4 0 0 0
OW 1924 1224 285 384 33 0 0 0
VODI 2061 375 276 1113 150 22 0 0
ODI 0 75 57 281 504 158 6 0
CDI 0 0 0 31 1596 4946 91 0
VCDI 0 0 0 0 0 26 217 0

Date: 2024-07-31:

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 80452 7098 149 117 89 15 0 0
OW 1961 961 356 415 72 11 0 0
VODI 1993 201 292 1085 168 26 0 0
ODI 0 10 17 230 1642 238 0 0
CDI 0 0 0 4 1447 3591 58 0
VCDI 0 0 0 0 2 48 114 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 80441 6553 90 96 75 5 0 0
OW 1941 1153 331 573 81 22 0 0
VODI 2024 459 313 758 112 36 0 0
ODI 0 105 79 325 628 166 0 0
CDI 0 0 1 99 2522 3587 2 0
VCDI 0 0 0 0 2 113 170 0

Date: 2024-08-02:

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 81948 6096 46 22 1 0 0 0
OW 1994 961 440 400 27 3 1 0
VODI 1954 209 242 876 221 50 16 0
ODI 0 16 26 171 1129 659 65 0
CDI 0 0 0 1 382 4538 290 0
VCDI 0 0 0 0 0 3 75 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 81909 5600 37 22 10 0 0 0
OW 2002 1193 354 341 12 5 1 0
VODI 1985 414 293 787 148 29 17 0
ODI 0 75 67 260 621 428 51 0
CDI 0 0 3 59 966 4745 298 0
VCDI 0 0 0 1 3 46 80 0


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