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

Validation of sea ice concentration - American sector

Bulletin date: 2017-04-13

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

Model vs. observations, sea ice class contingency tables

Date: 2017-04-07:

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 0 0 0 0 0 0 0 OW 0 0 0 0 0 0 0 0 VODI 0 0 0 0 0 0 0 0 ODI 0 0 0 0 0 0 5 2 CDI 0 0 0 0 29 124 217 56 VCDI 0 0 0 0 38 1577 11886 31932	...date precedes bulletin

Date: 2017-04-09:

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 0 0 0 0 0 0 0 OW 0 0 0 0 0 0 0 0 VODI 0 0 0 0 0 0 0 0 ODI 0 0 0 0 10 51 16 1 CDI 0 0 0 0 80 264 125 64 VCDI 0 0 0 0 350 3693 12422 28790	...date precedes bulletin

Date: 2017-04-11:

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 0 0 0 0 0 0 0 OW 0 0 0 0 0 0 0 0 VODI 0 0 0 0 0 0 0 0 ODI 0 0 0 0 73 38 10 0 CDI 0 0 0 0 129 215 109 23 VCDI 0 0 0 0 214 3593 12321 29141	...date precedes bulletin

Date: 2017-04-13:

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 0 0 0 0 0 0 0 OW 0 0 0 0 0 0 0 0 VODI 0 0 0 0 8 1 0 0 ODI 0 0 0 0 40 42 25 0 CDI 0 0 0 5 83 231 42 9 VCDI 0 0 0 0 76 2699 15587 27018	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 0 0 0 0 0 0 0 OW 0 0 0 0 0 0 0 0 VODI 0 0 0 0 12 3 1 0 ODI 0 0 0 0 44 50 26 0 CDI 0 0 0 3 76 272 53 4 VCDI 0 0 0 2 75 2648 15574 27023

Date: 2017-04-15:

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 0 0 0 0 0 0 0 OW 0 0 0 0 5 8 0 0 VODI 0 0 0 0 27 16 15 0 ODI 0 0 0 6 75 60 10 0 CDI 0 0 0 5 147 266 81 43 VCDI 0 0 0 2 103 2621 15670 26706	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 0 0 0 0 0 0 0 OW 0 0 0 0 2 8 0 0 VODI 0 0 0 0 28 15 16 0 ODI 0 0 0 6 88 80 10 0 CDI 0 0 0 4 145 305 111 39 VCDI 0 0 0 3 94 2563 15639 26710

Date: 2017-04-17:

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 0 0 0 0 0 0 0 OW 0 0 0 0 2 6 0 0 VODI 0 0 0 9 73 36 0 0 ODI 0 0 0 16 149 37 3 0 CDI 0 0 0 0 177 321 75 0 VCDI 0 0 0 0 72 2511 17554 24825	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 0 0 0 0 0 0 0 OW 0 0 0 0 17 29 0 0 VODI 0 0 0 0 66 27 4 0 ODI 0 0 0 15 114 53 8 0 CDI 0 0 0 10 146 272 142 0 VCDI 0 0 0 0 130 2530 17478 24825

Date: 2017-04-19:

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 0 0 0 0 0 0 0 0 OW 0 0 0 0 9 13 1 0 VODI 0 0 0 0 40 51 1 0 ODI 0 0 0 0 149 70 4 0 CDI 0 0 0 0 199 407 99 1 VCDI 0 0 0 0 102 2498 16474 25748	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 0 0 0 0 0 0 0 OW 0 0 0 0 4 26 2 0 VODI 0 0 0 0 51 63 0 0 ODI 0 0 0 0 98 65 6 0 CDI 0 0 0 0 176 317 176 71 VCDI 0 0 0 0 170 2568 16395 25678

Date: 2017-04-21:

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 0 0 0 0 0 0 0 0 OW 0 0 0 0 14 16 0 0 VODI 0 0 0 0 23 44 7 0 ODI 0 0 0 4 120 38 5 0 CDI 0 0 0 1 196 288 121 0 VCDI 0 0 0 0 171 1765 14355 28698	observations Ice free Ice free near MIZ OW VODI ODI CDI VCDI near MIZ VCDI m o d e l Ice free 0 0 0 0 0 0 0 0 OW 0 0 0 0 16 36 4 0 VODI 0 0 0 0 29 44 7 0 ODI 0 0 0 3 75 59 12 0 CDI 0 0 0 2 205 261 250 20 VCDI 0 0 0 0 199 1751 14215 28678

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