Direct Solar Spectral Irradiance Measurements and Updated Simple Transmittance Models

Comparison of Spectral Direct and Diffuse Solar Irradiance Measurements and Calculations for Cloud-Free Conditions

The comparison of spectral measurements and calculations provides an excellent foundation for analyzing the ability of models to compute the solar irradiance absorbed in the atmosphere. Since molecular absorption bands have distinctive spectral signatures, the absence of an atmospheric absorber in a model would result in spectral measurement-model residuals qualitatively different from those ca...

Solar Irradiance Conversion Models*

Technical guide to Set Up a Spectral Solar Direct Normal Irradiance Permanent Station: Study Area- Hannover, Germany

The spectral Direct Normal Irradiance (SDNI) is a basic radiometric quantity from which many other quantities can be derived. It provides not only information about the spectral and distribution of the direct solar radiation reaching a particular location. Accurate knowledge about the spectral direct irradiance shall enable us to gain new scientific results in the: determination of cloud effect...

Spectral solar irradiance and its entropic effect

Introduction Conclusions References

Spectral Resolution Effects on Solar Irradiance Calculations

For this study, we compared the spectral and integrated irradiance computed by high-resolution and moderate-resolution radiative transfer models (FASE and MODTRAN). It was found that the spectral resolution of a top of the atmosphere solar irradiance, coupled with the spectral resolution of the model used to compute the atmospheric transmittance, can influence the calculation of integrated sola...