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: 2023-05-04

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

Model vs. observations, sea ice class contingency tables

Date: 2023-04-28:

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 96 36 28 0 0 0 0 OW 0 36 6 39 11 0 0 0 VODI 0 73 8 20 18 3 0 0 ODI 0 49 3 5 28 45 6 0 CDI 0 60 10 10 90 133 64 0 VCDI 0 29 19 59 326 1965 9054 19753	...date precedes bulletin

Date: 2023-04-30:

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 0 98 29 21 0 0 0 0 OW 0 54 9 50 12 0 0 0 VODI 0 42 10 42 25 5 0 0 ODI 0 39 2 10 8 8 1 0 CDI 0 49 3 13 23 77 92 10 VCDI 0 42 16 50 175 1493 8446 21128	...date precedes bulletin

Date: 2023-05-02:

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 0 216 51 46 1 0 0 0 OW 0 40 1 36 14 0 0 0 VODI 0 30 7 24 47 0 0 0 ODI 0 15 12 13 36 6 1 0 CDI 0 1 9 46 162 124 28 6 VCDI 0 0 0 0 119 1580 7775 21636	...date precedes bulletin

Date: 2023-05-04:

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 0 172 38 50 1 0 0 0 OW 0 49 10 44 10 0 0 0 VODI 0 31 2 12 21 8 0 0 ODI 0 15 9 9 28 27 5 0 CDI 0 11 11 23 57 214 118 26 VCDI 0 0 0 32 109 1944 11707 17289	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 197 46 86 10 0 0 0 OW 0 34 3 10 14 0 0 0 VODI 0 26 6 13 10 8 0 0 ODI 0 11 6 9 34 27 5 0 CDI 0 10 9 20 61 203 123 45 VCDI 0 0 0 32 97 1955 11702 17270

Date: 2023-05-06:

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 0 164 35 33 1 0 0 0 OW 0 32 15 47 18 1 0 0 VODI 0 26 5 9 11 11 0 0 ODI 0 14 3 14 8 45 1 0 CDI 0 9 7 19 51 194 70 1 VCDI 0 0 4 34 111 1763 11807 17519	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 181 48 69 14 0 0 0 OW 0 17 3 12 12 2 0 0 VODI 0 27 5 14 5 10 0 0 ODI 0 13 3 9 13 45 2 0 CDI 0 7 8 17 54 188 67 4 VCDI 0 0 2 35 102 1769 11809 17516

Date: 2023-05-08:

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 0 263 37 19 0 0 0 0 OW 0 15 15 33 6 0 0 0 VODI 0 8 7 19 29 6 0 0 ODI 0 4 8 25 25 27 2 0 CDI 0 0 1 38 117 378 38 0 VCDI 0 0 0 0 20 1054 11791 18097	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 210 36 41 8 0 0 0 OW 0 19 8 11 19 0 0 0 VODI 0 30 6 9 8 6 0 0 ODI 0 17 4 12 8 19 1 0 CDI 0 14 9 25 65 153 41 0 VCDI 0 0 5 36 89 1287 11789 18097

Date: 2023-05-10:

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 0 269 33 18 0 0 0 0 OW 0 24 6 21 12 0 0 0 VODI 0 15 8 9 15 9 0 0 ODI 0 3 8 17 37 24 0 0 CDI 0 0 4 53 147 267 59 104 VCDI 0 0 0 7 142 1600 11033 18138	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 223 32 31 20 0 0 0 OW 0 22 4 6 5 6 0 0 VODI 0 28 3 7 0 3 0 0 ODI 0 23 3 8 6 11 0 0 CDI 0 15 13 31 61 97 60 37 VCDI 0 0 4 42 261 1783 11032 18205

Date: 2023-05-12:

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 11 303 12 15 0 0 0 0 OW 0 37 3 19 11 0 0 0 VODI 0 29 5 4 15 4 0 0 ODI 0 19 8 7 20 21 20 0 CDI 0 5 17 47 91 215 140 18 VCDI 0 0 0 30 94 1434 12639 16789	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 11 254 12 34 18 0 0 0 OW 0 32 3 0 4 2 0 0 VODI 0 38 2 4 1 2 0 0 ODI 0 30 2 9 5 5 32 11 CDI 0 32 13 28 42 28 168 36 VCDI 0 7 13 47 161 1637 12599 16760

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