About: fraction_of_surface_downwelling_photosynthetic_radiative_flux_absorbed_by

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About: fraction_of_surface_downwelling_photosynthetic_radiative_flux_absorbed_by_vegetation Goto Sponge NotDistinct Permalink

An Entity of Type : skos:Concept, within Data Space : foodie-cloud.org, foodie-cloud.org associated with source document(s)

Attributes	Values
type	Concept
versionInfo	2
sameAs	fraction_of_surface_downwelling_photosynthetic_radiative_flux_absorbed_by_vegetation fraction_of_surface_downwelling_photosynthetic_radiative_flux_absorbed_by_vegetation
preferred label	fraction_of_surface_downwelling_photosynthetic_radiative_flux_absorbed_by_vegetation (en)
Identifier	SDN:P07::5D73T768
dc:identifier	SDN:P07::5D73T768
Date	2018-07-03 16:09:23.0
definition	Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The surface called "surface" means the lower boundary of the atmosphere. The quantity with standard name fraction_of_surface_downwelling_photosynthetic_radiative_flux_absorbed_by_vegetation, often called Fraction of Absorbed Photosynthetically Active Radiation (FAPAR), is the fraction of incoming solar radiation in the photosynthetically active radiation spectral region that is absorbed by a vegetation canopy. "Photosynthetic" radiation is the part of the spectrum which is used in photosynthesis e.g. 400-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of "radiation_wavelength". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Vegetation" means any plants e.g. trees, shrubs, grass. The term "plants" refers to the kingdom of plants in the modern classification which excludes fungi. Plants are autotrophs i.e. "producers" of biomass using carbon obtained from carbon dioxide. (en)
notation	SDN:P07::5D73T768
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owl:deprecated	false
note	accepted (en)
void:inDataset	http://vocab.nerc.ac.uk/.well-known/void
has related	http://vocab.nerc.ac.uk/collection/P06/current/UUUU/
http://purl.org/pav/authoredOn	2018-07-03 16:09:23.0
http://purl.org/pav/hasCurrentVersion	http://vocab.nerc.ac.uk/collection/P07/current/5D73T768/2/
http://purl.org/pav/hasVersion	http://vocab.nerc.ac.uk/collection/P07/current/5D73T768/1/
http://purl.org/pav/version	2
is has member of	Climate and Forecast Standard Names

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