Instrument: Biospherical QSP-200L underwater PAR Sensor

Instrument Short Name: QSP-200L underwater PAR
(http://vocab.nerc.ac.uk/collection/L22/current/TOOL0070/)
Instrument Description:

Underwater radiometer with a PAR spectral response (400-700nm). Standard configuration had a spherical collector measuring 4-pi scalar irradiance but a flat plate cosine collector was available as an identically-designated option.

PI supplied instrument name: Biospherical Instruments QSP-200L4S underwater PAR sensor
Dataset-specific description

For hydrocasts less than 1000m deep, a Biospherical Instruments QSP-200L4S underwater PAR sensor was attached to the CTD rosette. This sensor was linked to a surface PAR sensor on the ship (QSR-240).