SWEET Ontology
type: Ontology
version info: 2.3
imports: propEnergy.owl
imports: propQuantity.owl
imports: phenStar.owl
imports: repr.owl
imports: reprSciUnits.owl
imports: relaPhysical.owl
imports: rela.owl
imports: relaSci.owl
imports: phenGeolSeismicity.owl

Radiance
type: Class
subclass of: ElectromagneticRadiationQuantity
subclass of: Restriction
  has value: wattPerMeterSquaredPerSteradian
  on property: hasDefaultUnit
comment: A radiometric term for the rate at which radiant energy in a set of directions confined to a unit solid angle around a particular direction is transferred across unit area of a surface (real or imaginary) projected onto this direction.

SpectralRadiance
type: Class
subclass of: Radiance
comment: The radiance per unit wavelength or wavenumber interval.

Absorbed Solar Radiation
type: Class
subclass of: SolarRadiation
comment: Solar radiation absorbed by the atmosphere's constituent gases, suspended material, clouds, or by the earth's surface.

SolarRadiation
type: Class
subclass of: ElectromagneticRadiationQuantity
comment: The total electromagnetic radiation emitted by the sun.

RadiativeForcing
type: Class
subclass of: FluxDensity
subclass of: RadiantFlux
comment: In radiation, the net flux of radiation into or out of a system. As a consequence of radiative forcing there must be some change to the nonradiative energy states of the system.

RadiantFlux
type: Class
subclass of: RadiativeForcing
comment: Radiant energy per unit time passing some specified area from one side.

BulkHeatFlux
type: Class
subclass of: ThermalFlux
comment: >Heat flux averaged over a layer of air, such as the boundary layer; heat-flux divergence or difference between the top and bottom of a layer.

TerrestrialRadiation
type: Class
subclass of: RadiativeFlux
comment: Longwave radiation originating by thermal emission from a planetary surface and/or its atmosphere

Opacity
type: Class
subclass of: RadiationMediumInteractionQuantity
equivalent class: AbsorptionCoefficient
subclass of: Restriction
  has value: meterSquaredPerKilogram
  on property: hasDefaultUnit
comment: The extinction coefficient for a particular substance is a measure of how well it scatters and absorbs electromagnetic radiation (EM waves). If the EM wave can pass through very easily, the material has a low extinction coefficient. Conversely, if the radiation hardly penetrates the material, but rather quickly becomes extinct within it, the extinction coefficient is high.