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: 2025-02-20

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

Model vs. observations, sea ice class contingency tables

Date: 2025-02-14:

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 0 351 10 5 0 0 0 0 OW 0 78 14 29 5 0 0 0 VODI 0 46 17 34 41 11 0 0 ODI 0 15 11 57 46 37 1 0 CDI 0 4 7 61 175 341 65 37 VCDI 0 0 0 0 35 1066 7986 22511	...date precedes bulletin

Date: 2025-02-16:

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 0 199 32 73 18 0 0 0 OW 0 59 16 55 24 0 0 0 VODI 0 29 12 24 34 17 0 0 ODI 0 10 10 37 30 47 0 5 CDI 0 1 4 50 90 137 35 54 VCDI 0 0 0 10 89 514 8134 23247	...date precedes bulletin

Date: 2025-02-18:

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 0 226 24 47 11 0 0 0 OW 0 102 18 35 11 0 0 0 VODI 0 45 19 60 23 1 0 0 ODI 0 1 3 29 43 11 3 0 CDI 0 0 1 31 70 103 46 5 VCDI 0 0 0 15 107 506 7279 24221	...date precedes bulletin

Date: 2025-02-20:

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 0 224 18 51 0 0 0 0 OW 0 116 13 38 17 0 0 0 VODI 0 62 9 38 32 0 0 0 ODI 0 14 12 18 36 11 8 1 CDI 0 5 16 28 76 61 67 31 VCDI 0 0 1 46 98 584 8508 22857	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 230 19 53 0 0 0 0 OW 0 111 13 38 18 0 0 0 VODI 0 60 9 34 33 0 2 0 ODI 0 15 14 19 35 10 9 2 CDI 0 5 14 31 73 62 67 37 VCDI 0 0 0 44 100 584 8505 22850

Date: 2025-02-22:

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 0 235 24 38 0 0 0 0 OW 0 96 6 51 9 0 0 0 VODI 0 54 3 35 19 0 0 0 ODI 0 22 3 28 24 22 0 0 CDI 0 13 0 34 82 126 26 19 VCDI 0 0 0 9 81 295 7001 24741	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 245 26 38 0 0 0 0 OW 0 93 3 52 12 0 0 0 VODI 0 53 5 35 16 6 0 0 ODI 0 20 2 29 24 19 0 0 CDI 0 9 0 33 79 113 34 21 VCDI 0 0 0 8 84 305 6993 24739

Date: 2025-02-24:

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 1 369 15 13 0 0 0 0 OW 0 156 10 17 7 0 0 0 VODI 0 56 25 40 25 0 0 0 ODI 0 9 12 48 72 3 0 0 CDI 0 1 6 45 235 166 5 16 VCDI 0 0 0 51 197 943 7289 23264	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 1 371 16 12 0 0 0 0 OW 0 71 6 27 5 0 0 0 VODI 0 50 3 25 31 0 0 0 ODI 0 44 6 16 81 3 0 0 CDI 0 53 32 36 178 118 18 8 VCDI 0 2 5 98 241 991 7276 23272

Date: 2025-02-26:

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 0 343 9 23 0 0 0 0 OW 0 153 17 17 8 0 0 0 VODI 0 102 20 29 29 0 0 0 ODI 0 26 8 16 53 1 0 0 CDI 0 22 6 39 175 104 3 15 VCDI 0 19 23 92 174 1257 6410 23903	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 326 7 8 0 0 0 0 OW 0 101 13 25 9 0 0 0 VODI 0 92 16 28 32 0 0 0 ODI 0 44 8 15 64 0 0 0 CDI 0 35 10 24 161 139 7 21 VCDI 0 67 29 116 173 1223 6406 23897

Date: 2025-02-28:

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 0 265 21 26 0 0 0 0 OW 0 114 22 30 12 0 0 0 VODI 0 95 24 71 15 13 0 0 ODI 0 39 9 32 21 24 0 0 CDI 0 23 13 40 114 120 2 6 VCDI 0 8 20 81 162 889 4886 25899	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 284 19 25 2 0 0 0 OW 0 101 19 37 12 7 0 0 VODI 0 83 33 71 19 34 0 0 ODI 0 31 14 37 44 38 0 0 CDI 0 27 4 40 93 141 14 3 VCDI 0 18 20 70 154 826 4874 25902

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