Understanding the Temporal and Spatial Variability of New Generation Gridded Tmys

Typical Meteorological Year (TMY) data sets provide industry standard resource information for building designers and the solar industry. Historically, TMY data sets were only available for certain locations, but current TMY data sets are available on the same grid as the new 4-km by 4-km gridded National Solar Radiation Database (NSRDB) data and are referred to as the gridded TMY. In this presentation, we analyze the temporal and spatial variability of the typical year data sets, thereby providing insight into the representativeness of a particular TMY data set for use in building performance modeling.