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

Validation of sea ice concentration - Asian 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 0 852 31 17 15 0 0 0
OW 0 318 51 71 77 0 0 0
VODI 0 161 64 160 119 12 0 0
ODI 0 22 19 85 191 74 2 0
CDI 0 24 20 36 89 279 103 0
VCDI 0 4 4 49 147 1654 11587 15745
...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 0 697 26 20 0 0 0 0
OW 0 291 54 82 38 5 0 0
VODI 0 111 75 152 110 14 0 0
ODI 0 27 13 87 197 130 0 0
CDI 0 17 14 44 113 257 24 0
VCDI 0 1 2 15 96 831 7401 21138
...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 0 551 31 16 0 0 0 0
OW 0 189 52 90 14 0 0 0
VODI 0 80 74 197 109 14 0 0
ODI 0 4 8 107 266 67 8 0
CDI 0 0 1 24 220 320 95 0
VCDI 0 0 0 0 13 727 8976 19829
...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 3 310 23 93 0 0 0 0
OW 0 92 44 86 63 0 0 0
VODI 0 47 45 136 178 49 0 0
ODI 0 2 6 59 203 197 11 0
CDI 0 0 1 7 115 320 151 0
VCDI 0 0 0 0 30 638 9016 20157
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 3 311 18 84 2 0 0 0
OW 0 97 46 111 70 2 0 0
VODI 0 41 46 119 181 60 0 0
ODI 0 2 8 59 205 201 22 0
CDI 0 0 1 8 103 317 152 0
VCDI 0 0 0 0 28 624 9004 20157

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 3 297 3 2 30 0 0 0
OW 0 71 18 56 143 20 0 0
VODI 0 40 25 81 148 106 1 0
ODI 0 1 9 48 120 249 30 0
CDI 0 0 0 9 77 379 180 0
VCDI 0 0 0 0 17 353 7694 21872
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 3 309 4 2 2 0 0 0
OW 0 67 17 60 180 10 0 0
VODI 0 32 23 71 151 132 0 0
ODI 0 1 11 53 117 243 60 0
CDI 0 0 0 9 68 391 193 0
VCDI 0 0 0 1 17 331 7652 21872

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 7 412 2 0 0 0 0 0
OW 0 497 43 11 3 0 0 0
VODI 0 139 105 243 62 1 0 0
ODI 0 26 20 103 225 85 0 0
CDI 0 18 25 52 120 265 57 0
VCDI 0 6 17 78 119 819 8520 20002
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 7 345 2 0 0 0 0 0
OW 0 297 17 16 4 0 0 0
VODI 0 226 67 128 35 1 0 0
ODI 0 123 47 124 153 73 2 0
CDI 0 78 28 96 197 191 26 0
VCDI 0 29 51 123 140 905 8549 20002

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 2 492 4 0 0 0 0 0
OW 0 503 36 37 3 0 0 0
VODI 0 222 81 221 91 1 0 0
ODI 0 63 9 114 174 56 0 0
CDI 0 68 25 68 106 158 138 0
VCDI 0 76 47 126 174 1235 7763 19989
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2 348 0 0 0 0 0 0
OW 0 339 21 16 0 0 0 0
VODI 0 306 62 128 37 2 0 0
ODI 0 146 32 160 184 39 0 0
CDI 0 144 24 117 133 149 117 0
VCDI 0 141 63 145 194 1260 7784 19989

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 11 421 0 0 0 0 0 0
OW 0 299 22 43 40 0 0 0
VODI 0 250 76 201 249 26 0 0
ODI 0 80 19 56 153 153 0 0
CDI 0 62 31 89 88 277 113 0
VCDI 0 99 31 94 237 1548 7022 20292
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 11 331 3 0 0 0 0 0
OW 0 168 7 35 19 0 0 0
VODI 0 249 65 159 167 16 0 0
ODI 0 137 19 57 196 103 0 0
CDI 0 182 33 73 86 248 38 0
VCDI 0 144 52 159 299 1637 7097 20292


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