Ground-based measurements remain the most accurate method for determining solar surface irradiance despite continuous improvements in satellite-derived and reanalysis models. However, identifying and accessing high-quality irradiance measurements is challenging, largely due to incomplete information on available stations. Consequently, many studies use low-quality data or have poor geographical coverage, reducing the scientific outcomes. To address this issue, a global catalog of multi-component solar irradiance monitoring stations has been created, streamlining the identification of relevant stations.
