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

Validation of sea ice concentration - Full domain

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 83953 19992 258 122 2 0 0 0
OW 1749 5919 918 835 108 8 0 0
VODI 2462 1591 1155 4780 2814 150 0 0
ODI 1 95 126 1885 8354 2853 3 0
CDI 4 162 33 166 9937 27113 379 0
VCDI 0 7 8 43 801 1851 173 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 85909 19096 163 71 4 0 0 0
OW 1847 5807 914 962 152 7 0 0
VODI 2417 1815 1090 5312 2469 97 2 0
ODI 1 208 171 1620 7342 3867 18 0
CDI 3 171 32 311 9762 24824 435 0
VCDI 0 44 13 50 869 2876 59 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 87379 21002 235 144 11 0 0 0
OW 1807 4760 1187 1025 71 5 0 0
VODI 2324 725 1102 5520 2187 63 0 0
ODI 0 81 29 1289 12448 2467 2 0
CDI 0 138 15 53 5954 22974 2005 0
VCDI 0 2 2 25 636 1450 1693 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 89313 20001 200 115 8 0 0 0
OW 2180 4631 1122 898 92 17 0 0
VODI 2290 1131 1251 5775 1692 61 0 0
ODI 0 104 75 1604 11596 3098 14 0
CDI 0 124 10 82 4660 21878 2293 0
VCDI 0 9 5 74 745 2365 1297 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 89431 20044 239 128 5 0 0 0
OW 2040 4534 1124 1031 84 12 0 0
VODI 2312 1165 1214 5448 1689 93 0 0
ODI 0 98 70 1783 11710 3345 22 0
CDI 0 152 11 83 4553 20873 2195 0
VCDI 0 7 5 75 752 3096 1387 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 90963 19190 157 125 14 0 0 0
OW 2213 5200 1040 1063 155 14 0 0
VODI 2103 1274 1180 5036 2057 201 4 0
ODI 4 132 124 1883 9668 3848 79 0
CDI 0 123 34 107 5479 21715 2664 0
VCDI 0 19 17 123 526 1150 1126 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 90935 19331 189 150 16 0 0 0
OW 2080 5026 1041 1105 166 13 0 0
VODI 2263 1286 1157 4829 1970 208 4 0
ODI 5 129 117 2018 9821 4099 167 0
CDI 0 139 32 114 5400 21393 2649 0
VCDI 0 27 16 121 526 1215 1053 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 90331 23137 244 155 19 0 0 0
OW 2027 4471 1315 1149 109 0 0 0
VODI 2040 488 901 5514 1364 59 0 0
ODI 0 91 25 868 12073 2248 2 0
CDI 0 52 23 78 2102 23808 1666 1
VCDI 0 7 17 114 349 876 3082 5
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 90112 20939 148 140 30 0 0 0
OW 2210 5368 990 1298 179 7 0 0
VODI 2069 1533 1175 4230 2082 282 0 0
ODI 7 197 155 1937 8282 4873 136 1
CDI 0 151 27 121 5034 20772 3840 5
VCDI 0 58 30 152 409 1057 774 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 94120 20138 310 206 95 15 0 0
OW 2029 4489 1104 1014 142 22 0 0
VODI 2008 758 1144 4989 1611 76 0 0
ODI 8 98 43 895 10477 2573 0 0
CDI 0 80 36 91 5193 20609 2755 0
VCDI 0 40 28 207 249 1866 1292 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 93807 17740 204 173 84 5 0 0
OW 2291 5436 1031 1410 222 41 0 0
VODI 2037 1894 1081 3589 2396 259 0 0
ODI 22 262 262 1773 8091 4584 67 0
CDI 8 176 39 224 6690 18995 3560 0
VCDI 0 95 48 233 284 1277 420 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 98318 16959 151 60 3 0 0 0
OW 2124 4867 1057 874 73 3 1 0
VODI 2003 1270 1153 4819 1359 106 17 0
ODI 18 116 59 1417 9256 2252 208 0
CDI 0 126 31 106 5032 21028 2720 0
VCDI 0 131 45 152 276 1192 1428 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 97734 14812 140 76 12 0 0 0
OW 2671 5620 967 1037 88 13 2 0
VODI 2019 2279 1023 3633 1956 205 91 0
ODI 27 353 275 2301 7751 4696 157 0
CDI 12 213 42 227 5934 18931 3610 0
VCDI 0 192 49 154 258 736 514 0


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