Below tables with results from comparing the OSI SAF ice concentration and ice edge products are given. These validation resuls are representing areas close to the ice edge. Areas further into the Artic ice have not been included. Including these areas would have increased the validation "score". The validation results show the relative performance in the areas close to the ice edge and for example illustrates the problems finding the ice edge during late summer.

Validation results for Sea Ice Concentration product

OSI SAF Sea Ice Concentration product compared with met.no Ice Service (OSISAF - Ice service)
Source: oper , Product area: nh

Year Month	Match +/- 10% (%)	Match +/- 20% (%)	Bias	Std dev	Num compared
2018 04	94.82	96.94	-1.63	6.63	165068
2018 05	95.33	96.33	-1.76	7.17	352512
2018 06	93.64	94.71	-2.33	8.27	462608
2018 07	92.20	93.21	-3.34	11.08	530629
2018 08	96.32	97.01	-1.32	6.43	591009
2018 09	98.09	98.61	-0.72	4.46	495207
2018 10	98.97	99.33	-0.37	2.82	582221
2018 11	98.22	98.79	-0.63	3.57	484838
2018 12	97.25	98.10	-0.99	4.60	347249
2019 01	95.84	97.05	-1.56	6.21	353016
2019 02	96.58	97.73	-1.32	5.86	299310
2019 03	96.01	97.08	-1.46	5.87	195006

Validation table updated at: 2019.03.23 16:15 UTC

Validation results for Sea Ice Edge product

OSI SAF Sea Ice Edge product compared with met.no Ice Service (OSISAF - Ice service)
Source: oper , Product area: nh

Year Month	Match (%)	OSI SAF underestimates	OSI SAF overestimates	Mean edge difference (km)	Num compared
2018 04	98.36	1.07	0.57	11.53	303476
2018 05	97.77	1.19	1.04	14.05	620309
2018 06	97.70	1.64	0.66	24.86	699951
2018 07	94.85	4.96	0.19	33.00	704245
2018 08	98.32	1.24	0.44	27.93	717898
2018 09	99.19	0.33	0.48	20.69	600476
2018 10	99.29	0.17	0.54	9.86	739303
2018 11	98.73	0.69	0.58	12.48	650385
2018 12	98.19	0.77	1.04	12.94	554406
2019 01	98.12	1.15	0.73	13.52	657046
2019 02	97.94	1.01	1.05	10.82	611697
2019 03	98.02	1.30	0.68	16.12	419370

Validation table updated at: 2019.03.23 16:15 UTC