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Parameter: PAR_photons

Short Description: PAR_photons

Short Name: PAR_photons

Official Name: PAR_photons

Units: micromols photons/meter^2/second; OR microEinsteins/meter^2/second

No Data Value: nd

External Identifier: skos:closeMatch: http://vocab.nerc.ac.uk/collection/P01/current/PFDPAR01/

Description

Spectrally-integrated downwelling planar irradiance, in PAR units (400 - 700nm)

Parameter Occurences in Datasets (12)

Dataset	PI-Supplied Description	PI-Supplied Name
Kd averages calculated by month from studies conducted in St. John, US Virgin Islands from 2014-2017.	Kd values published in studies	Kd
Kd averages calculated by month from studies conducted in St. John, US Virgin Islands from 2014-2017.	Kd mean from values published in studies	Kd_Mean
Kd averages calculated by month from studies conducted in St. John, US Virgin Islands from 2014-2017.	Kd standard error from values published in studies	Kd_SE
Measurements of light intensity (PAR) underwater (19 m depth) in St. John, US Virgin Islands from 2014-2017.	Underwater light; averaged within burst that the sensor was on	Burst_average
Measurements of light intensity (PAR) underwater (19 m depth) in St. John, US Virgin Islands from 2014-2017.	Kd PAR calculated according to equations and assumptions in paper (DOI: 10.1007/s00338-018-1721-y). Values at night and late/early in the day (between about 17:00 and 07:00 the next day) are unlikely to be meaninghful due to the low values recorded.	Kd_PAR
Measurements of light intensity (PAR) underwater (19 m depth) in St. John, US Virgin Islands from 2014-2017.	Mean Kd-PAR over noon hours using 2-3 records around noon.	Noon_Kd
Measurements of light intensity (PAR) underwater (19 m depth) in St. John, US Virgin Islands from 2014-2017.	Surface light	Surface
Nutrients and pigments from HPLC analysis for fire ash deposition to coastal ocean study, southern California, December 2017	Photosynthetically Available Radiation	Par
Clones of Prochlorococcus MIT9312 mixed with clonal isolates of the heterotrophic "helper" bacterium Alteromonas EZ55 (P-ExpEv project)	light level at which sample was collected	light_level
Measurements of rainfall and surface light intensity (PAR) in St. John, US Virgin Islands from 2014-2017.	Surface light mean	SurfaceLight_Mean
Measurements of rainfall and surface light intensity (PAR) in St. John, US Virgin Islands from 2014-2017.	Surface light mean standard error	SurfaceLight_SE
Light data collected from loggers deployed at the Thalassia Experimental Network (TEN) sites in the Western Atlantic from 2018-2019	Light reading converted from raw light data.	calibrated_light_value