Description of algorithm Interpretation of results RMS, ice class areas Contingency tables Sea ice concentration maps

Validation of sea ice concentration

Bulletin date: 2011-02-23

Model vs. observations, sea ice class contingency tables

Date: 2011-02-17:

Best estimate	Forecast
observations water VODI ODI CDI VCDI m o d e l water 19578 329 276 114 185 VODI 138 87 109 104 127 ODI 55 110 125 112 146 CDI 46 62 152 185 369 VCDI 5 50 306 1175 13474	...date precedes bulletin

Date: 2011-02-21:

Best estimate	Forecast
observations water VODI ODI CDI VCDI m o d e l water 19440 307 171 171 166 VODI 142 127 76 190 98 ODI 40 102 82 179 164 CDI 16 58 119 235 422 VCDI 18 76 173 1651 13196	...date precedes bulletin

Date: 2011-02-23:

Best estimate	Forecast
observations water VODI ODI CDI VCDI m o d e l water 19638 318 221 154 96 VODI 157 71 103 83 99 ODI 88 73 167 125 118 CDI 67 61 133 233 294 VCDI 53 110 260 1202 13495	observations water VODI ODI CDI VCDI m o d e l water 19493 251 207 154 92 VODI 226 97 84 84 86 ODI 137 93 172 104 133 CDI 92 89 156 247 300 VCDI 55 103 265 1208 13491

Date: 2011-02-25:

Best estimate	Forecast
observations water VODI ODI CDI VCDI m o d e l water 19932 265 184 262 81 VODI 157 82 56 126 94 ODI 94 68 92 147 154 CDI 47 107 104 209 387 VCDI 59 151 315 1425 12821	observations water VODI ODI CDI VCDI m o d e l water 19764 242 164 245 86 VODI 259 79 56 104 88 ODI 166 96 100 125 149 CDI 54 115 127 233 319 VCDI 46 141 304 1462 12895

Date: 2011-03-01:

Best estimate	Forecast
observations water VODI ODI CDI VCDI m o d e l water 20076 309 219 108 102 VODI 284 210 136 95 70 ODI 144 125 127 181 139 CDI 94 104 132 240 467 VCDI 61 166 249 1342 12239	observations water VODI ODI CDI VCDI m o d e l water 19929 287 229 96 94 VODI 317 188 106 112 70 ODI 225 136 115 155 141 CDI 108 119 141 215 420 VCDI 80 184 272 1388 12292

Date: 2011-03-03:

Best estimate	Forecast
observations water VODI ODI CDI VCDI m o d e l water 20059 332 191 150 92 VODI 214 132 184 104 93 ODI 117 92 148 182 143 CDI 139 71 150 270 436 VCDI 163 114 277 1071 12495	observations water VODI ODI CDI VCDI m o d e l water 19738 299 199 135 96 VODI 306 95 122 100 80 ODI 236 106 146 175 156 CDI 185 109 159 212 391 VCDI 227 132 324 1155 12536

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