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

Validation of sea ice concentration - Full domain

Bulletin date: 2022-07-28

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

Model vs. observations, sea ice class contingency tables

Date: 2022-07-22:

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 101393 19657 231 1597 215 0 0 0
OW 0 1508 168 1279 215 1 0 0
VODI 0 564 85 2294 1145 27 0 0
ODI 0 160 16 766 5381 1920 62 0
CDI 0 14 4 190 7130 19053 4793 51
VCDI 0 0 0 5 844 8824 6881 575
...date precedes bulletin

Date: 2022-07-24:

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 103122 18937 246 1553 166 0 0 0
OW 42 1623 121 1201 220 1 0 0
VODI 0 662 104 1917 1183 51 0 0
ODI 0 196 25 777 5291 2037 195 0
CDI 0 57 4 251 6937 18776 5911 126
VCDI 0 4 0 35 379 7992 5768 1138
...date precedes bulletin

Date: 2022-07-26:

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 104484 20504 227 1309 129 0 0 0
OW 9 923 182 1009 111 1 0 0
VODI 0 235 80 2422 1009 7 0 0
ODI 0 17 8 699 5960 620 0 0
CDI 0 5 0 84 5324 21120 3943 0
VCDI 0 0 0 4 89 4007 11526 1001
...date precedes bulletin

Date: 2022-07-28:

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 104218 21788 224 1070 111 0 0 0
OW 6 1019 157 1094 151 1 0 0
VODI 0 336 95 1983 1240 6 0 0
ODI 0 24 18 811 5021 1459 7 0
CDI 0 1 1 190 5847 20009 4546 7
VCDI 0 0 0 4 48 3913 8098 3545
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 104213 21872 232 1174 125 1 0 0
OW 11 915 154 928 156 3 0 0
VODI 0 353 90 1961 1269 4 0 0
ODI 0 27 18 871 4975 1667 7 0
CDI 0 1 1 214 5847 19695 4846 7
VCDI 0 0 0 4 46 4018 7798 3545

Date: 2022-07-30:

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 105381 21376 216 997 113 0 0 0
OW 2 1216 151 1067 189 1 0 0
VODI 0 363 83 2043 1239 26 0 0
ODI 0 10 13 1098 5162 1270 0 0
CDI 0 2 0 226 5764 20717 3454 0
VCDI 0 0 0 17 101 4846 5967 3938
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 105375 21512 222 1094 119 1 0 0
OW 8 1003 139 949 204 6 0 0
VODI 0 433 85 1888 1276 19 0 0
ODI 0 17 17 1238 5117 1477 0 0
CDI 0 2 0 259 5741 20385 3503 0
VCDI 0 0 0 20 111 4972 5918 3938

Date: 2022-08-01:

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 106321 22007 245 895 35 0 0 0
OW 0 978 186 1070 62 1 0 0
VODI 0 144 62 3142 969 5 0 0
ODI 0 10 2 565 8546 537 0 0
CDI 0 16 7 89 4542 21842 679 0
VCDI 0 0 0 5 20 2744 7412 3910
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 106315 21321 240 1070 59 1 0 0
OW 6 1244 131 1069 198 1 0 0
VODI 0 508 98 1867 1351 35 0 0
ODI 0 64 23 1298 5563 894 4 0
CDI 0 2 3 349 6896 20700 1345 9
VCDI 0 16 7 113 107 3498 6742 3901

Date: 2022-08-03:

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 108864 20456 220 900 57 0 0 0
OW 1 948 168 1248 196 3 0 0
VODI 0 399 80 2281 1645 24 0 0
ODI 0 31 6 482 7630 1019 11 0
CDI 0 26 5 102 6138 19244 1611 0
VCDI 0 0 0 4 19 2926 6511 3793
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 108818 19495 206 1026 106 0 0 0
OW 45 1287 114 994 295 1 0 0
VODI 2 759 106 1579 1587 89 0 0
ODI 0 255 38 878 5569 1086 71 0
CDI 0 24 7 457 7971 18758 1754 297
VCDI 0 40 8 83 157 3282 6308 3496

Date: 2022-08-05:

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 109067 20984 193 901 38 0 0 0
OW 1 1084 160 1412 260 3 0 0
VODI 0 367 68 2205 1635 27 0 0
ODI 0 50 14 718 7179 1236 59 0
CDI 0 22 5 108 6575 17469 2661 0
VCDI 0 0 0 4 22 3437 6677 2407
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 108954 19932 185 1049 144 0 0 0
OW 113 1190 102 850 294 1 0 0
VODI 1 976 95 1709 1429 115 1 0
ODI 0 304 37 1164 5138 1320 69 0
CDI 0 62 13 507 8605 16769 3324 506
VCDI 0 43 8 69 99 3967 6003 1901


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