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

Validation of sea ice concentration - Asian sector

Bulletin date: 2023-12-21

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

Model vs. observations, sea ice class contingency tables

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 154 423 13 1 0 0 0 0
OW 5 247 36 109 31 0 0 0
VODI 0 181 69 335 222 23 0 0
ODI 0 51 24 80 203 113 0 0
CDI 0 32 26 107 146 337 32 0
VCDI 0 35 24 109 322 1723 5847 22036
...date precedes bulletin

Date: 2023-12-17:

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 133 390 16 9 0 0 0 0
OW 12 128 43 49 42 6 0 0
VODI 10 115 80 320 289 116 0 0
ODI 0 35 47 151 133 228 5 0
CDI 0 16 13 149 192 189 132 2
VCDI 0 28 23 104 312 2003 5822 21754
...date precedes bulletin

Date: 2023-12-19:

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 91 481 10 12 0 0 0 0
OW 7 114 59 126 7 0 0 0
VODI 5 44 50 452 143 0 0 0
ODI 1 6 4 122 370 163 6 0
CDI 0 7 9 43 308 460 36 0
VCDI 0 0 9 82 397 2034 6606 20832
...date precedes bulletin

Date: 2023-12-21:

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 78 430 22 14 0 0 0 0
OW 5 77 28 78 30 0 0 0
VODI 4 54 26 235 244 7 0 0
ODI 0 17 7 249 389 192 24 0
CDI 0 1 7 80 217 537 71 0
VCDI 0 0 3 92 176 1555 6739 21408
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 77 440 23 21 0 0 0 0
OW 5 68 28 79 22 0 0 0
VODI 5 50 22 195 189 7 0 0
ODI 0 20 10 227 427 156 15 0
CDI 0 1 6 129 235 559 96 0
VCDI 0 0 4 97 183 1569 6723 21408

Date: 2023-12-23:

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 38 368 17 5 0 0 0 0
OW 1 72 24 51 14 0 0 0
VODI 0 29 28 234 202 3 0 0
ODI 0 17 16 190 417 169 45 0
CDI 0 5 1 100 196 507 224 7
VCDI 0 0 0 28 153 1424 6692 21819
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 38 387 26 16 1 0 0 0
OW 1 49 21 52 10 0 0 0
VODI 0 31 21 215 151 1 0 0
ODI 0 19 15 171 405 134 16 0
CDI 0 5 3 117 243 515 315 6
VCDI 0 0 0 37 172 1453 6630 21820

Date: 2023-12-25:

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 52 303 5 1 0 0 0 0
OW 3 53 9 27 0 0 0 0
VODI 2 26 2 184 30 0 0 0
ODI 0 9 0 101 505 29 2 0
CDI 0 0 0 14 388 756 27 0
VCDI 0 0 0 4 42 654 6013 23855
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 49 293 10 5 0 0 0 0
OW 3 40 2 34 1 0 0 0
VODI 3 28 4 124 82 19 0 0
ODI 2 23 0 96 380 88 2 0
CDI 0 7 0 59 374 641 406 0
VCDI 0 0 0 13 128 691 5634 23855

Date: 2023-12-27:

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 19 362 2 0 0 0 0 0
OW 0 89 16 7 0 0 0 0
VODI 0 62 34 58 16 0 0 0
ODI 0 35 14 89 392 50 3 0
CDI 0 10 14 111 501 153 10 0
VCDI 0 0 8 67 276 919 5468 24311
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 19 294 0 0 0 0 0 0
OW 0 81 5 2 0 0 0 0
VODI 0 75 18 27 42 7 0 0
ODI 0 64 20 88 366 36 1 0
CDI 0 43 26 104 376 195 57 4
VCDI 0 1 19 111 401 884 5423 24307

Date: 2023-12-29:

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 13 326 19 2 0 0 0 0
OW 1 95 7 20 0 0 0 0
VODI 0 57 24 41 19 5 0 0
ODI 0 28 17 62 152 199 0 0
CDI 0 28 8 54 246 353 8 0
VCDI 0 21 28 106 351 906 5138 24762
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 14 220 11 0 0 0 0 0
OW 0 90 10 6 0 0 0 0
VODI 0 59 6 35 4 0 0 0
ODI 0 53 16 56 79 48 0 0
CDI 0 77 25 57 148 309 3 6
VCDI 0 56 35 131 537 1106 5143 24756


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