SATELLITE-BASED SOLAR RESOURCE DATA: MODEL VALIDATION STATISTICS VERSUS USER'S UNCERTAINTY

摘要

Accuracy of satellite-based model estimates is compared to the accuracy achievable by on-site ground measuring campaigns. Validation statistics is converted to probabilistic description of uncertainty and demonstrated for SolarGIS annual DNI and GHI values. The uncertainty is described in two ways: as (ⅰ) model uncertainty relative to the high-quality ground validation data, and as (ⅱ) user's uncertainty, where we consider also uncertainty of ground data. This work focuses only on the uncertainty of the estimate. The second component of the user's uncertainty - data interannual variability - is not discussed here.