Atmospheric radiometers are used above water, typically to measure irradiance or spectral irradiance. The GUV series was developed to measure UV and visible at several wavelengths from 305 nm to 700 nm. It is deployed worldwide.

The OSPREy project is developing a wide series of different radiometers including irradiance with shadowband, and radiance including sun tracking. These radiometers are temperature stabilized, and include options for a high quality spectrograph featuring 19 10 nm-wide channels, and various custom configurations. 

The PRR-810 and C-OPS Surface Irradiance Sensors, developed for use with marine profiling systems, are superior 19-channel spectroradiometers for general research and monitoring.

The SUV-150B is a double-monochromator based scanning UV spectroradiometer measuring global spectral irradiance. It is a fully automated, all weather system. One instrument is part of the UV Monitoring network operated by Biospherical. 

Contact Sales for details.