Agroclimatology reference data

Air temperature data are readily available. Precipitation data can usually be obtained. But what about photosynthetically active radiation (PAR) data? Plants need PAR light to grow, and while turfgrass managers have temperature and precipitation data at their fingertips—PAR data is usally a bit more difficult to find.

One place I often check for these types of more obscure data is the NASA POWER Data Access Viewer. There are three sets of data: those for renewable energy, sustainable buildings, and agroclimatology.…