Category: Modeling Solar Radiation at the Earth’s Surfac

Satellite Model Evaluation

Many of the issues discussed above become much more noticeable and complicated for validation of models based on satellite input data. The questions of temporal and spatial consistency are particularly vexing, as satellite data, while uniform, are usu­ally sparse in time compared to surface observations. Spatial concerns are an even greater problem, since surface observations […]

Physical and Empirical Model Evaluation

With physical and empirical model evaluation of single or multiple models, an im­portant problem is that, often, the performance evaluation units and temporal reso­lution used in the new evaluation are different from those in the original validation. This is a much larger problem for satellite-based model evaluation, discussed briefly in the next subsection. For example, […]

6.1 Performance of Model Elements

One informative segment of model performance is the comparison of model ele­ments or functions to previously-developed similar model components. Examples include so-called “simple” broadband or spectral transmittance models. These types of models were briefly mentioned in Sect. 4, and described in Eq. (20.4). Compar­isons of individual transmittance functions from some similar models are detailed elsewhere […]

Performance Assessment Significance

The solar radiation literature is rich in validation reports of new, isolated models, or in performance assessment studies of similar models being intercompared. But, readers or users might ask, what is the significance of all these results? Interest­ingly, from a philosophical perspective, it has been boldly postulated that “ Verifi­cation and validation of numerical models […]