The Atmospheric Radiation Investigations and Measurements (ARIM) group had a previously designed spectral irradiance instrument (HARP) which performs measurements of spectrally resolved actinic flux and irradiance in the zenith and nadir directions.
The Charged-coupled device Actinic Flux Spectroradiometers (CAFS) instruments were designed and developed in the ARIM laboratory for aircraft and ground-based operations.
