Absorption
type: Class
subclass of: Parameter

Abstract Service
type: Class
disjoint with: Parameter
disjoint with: Dataset
disjoint with: Instrument
disjoint with: Observatory
disjoint with: Data Product
disjoint with: Detector
disjoint with: Attribute

Accelerator Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

Aerosol Lidar
type: Class
subclass of: Lidar

Airglow Imager
type: Class
subclass of: Imager

All Sky Imager
type: Class
subclass of: Imager

Altitude
type: Class
subclass of: Coordinate Parameter
disjoint with: Time Coordinate
disjoint with: Longitude
disjoint with: Latitude
disjoint with: Temperature
disjoint with: Velocity
disjoint with: Wind

Altitude Dependent Parameter
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: hasCoordinate
    some values from: Altitude
  intersection of: Parameter

Anion Parameter
type: Class
equivalent class: Class
  intersection of: Parameter
  intersection of: Restriction
    has value: NegativeElectricCharge
    on property: hasElectricCharge

Antarctic
has east most longitude: 1.8E2
has name: Antarctic
has north most latitude: -6.6E1
has south most latitude: -9.0E1
has super physical domain: EarthSurface
has west most longitude: -1.8E2
type: Surface Region

AntarcticCircle
has latitude: -6.6E1
has name: Antarctic Circle
has super physical domain: EarthSurface
type: Latitude Circle

Any
type: Class
subclass of: Data Image

Arctic
has east most longitude: 1.8E2
has name: Arctic
has north most latitude: 9.0E1
has south most latitude: 6.6E1
has super physical domain: EarthSurface
has west most longitude: -1.8E2
type: Surface Region

ArcticCircle
has latitude: 6.6E1
has name: Arctic Circle
has super physical domain: EarthSurface
type: Latitude Circle

ASC
type: Class
comment: ASCII Data File
subclass of: Data File

Asteroid
type: Class
subclass of: Astronomical Object

Astronomical Object
type: Class
subclass of: Physical Domain

Atmosphere
type: Class
subclass of: Restriction
  on property: hasState
  some values from: Electron State
subclass of: Restriction
  on property: hasSuperPhysicalDomain
  some values from: Class
    union of: Planet
    union of: Star
subclass of: Restriction
  on property: hasState
  some values from: Neutral State
subclass of: Restriction
  on property: hasState
  some values from: Ion State
subclass of: Physical Domain

Atmosphere Layer
type: Class
subclass of: Restriction
  on property: hasSuperPhysicalDomain
  some values from: Atmosphere
subclass of: Physical Domain

Atomic Density
type: Class
subclass of: Number Density

Atomic Neutral Density
type: Class
subclass of: Neutral Number Density
subclass of: Atomic Density

Atomic Weight
type: Class
subclass of: Weight

Attribute
type: Class
comment: Utility class representing a generic (name,value) pair
disjoint with: Parameter
disjoint with: Dataset
disjoint with: Instrument
disjoint with: Observatory
disjoint with: Data Product
disjoint with: Detector
disjoint with: Abstract Service

Auroral Boundary Index
type: Class
subclass of: Restriction
  on property: hasCoordinate
  some values from: Time Coordinate
subclass of: Index Parameter

Auto Correlation Function
type: Class
subclass of: Statistical Measure

Average
type: Class
subclass of: Data Image

Azimuth Angle
type: Class
subclass of: Coordinate Parameter

Background Count
type: Class
subclass of: Count Parameter

Best
type: Class
subclass of: Data Image

Bi Static Radar
type: Class
subclass of: Radar

Birefringent Filter Instrument
type: Class
subclass of: Filter Instrument
disjoint with: Interface Filter Instrument
disjoint with: Lyot Filter Instrument

CCD Imaging Detector
type: Class
subclass of: Imaging Detector
disjoint with: Thermometer
disjoint with: Film

Calcium Lidar
type: Class
subclass of: Lidar

Cation Parameter
type: Class
equivalent class: Class
  intersection of: Restriction
    has value: PositiveElectricCharge
    on property: hasElectricCharge
  intersection of: Parameter

Chi Square
type: Class
subclass of: Statistical Measure

Cloud Cover
type: Class
subclass of: Parameter

Coherence
type: Class
subclass of: Statistical Measure

Coherent Ionospheric Radar
type: Class
subclass of: Radar

Collision Frequency
type: Class
subclass of: Frequency

Comet
type: Class
subclass of: Astronomical Object

Composite Metadata Service
type: Class
comment: The combination of multiple metadata services
subclass of: Metadata Service

Composition
type: Class
subclass of: Parameter

Conductivity
type: Class
subclass of: Parameter

Coordinate Parameter
type: Class
subclass of: Parameter

Count Parameter
type: Class
subclass of: Parameter

Covariance
type: Class
subclass of: Statistical Measure

Cross Correlation
type: Class
subclass of: Statistical Measure

Current
type: Class
subclass of: Parameter

Current Density
type: Class
subclass of: Electro Magnetic Field

Current Density Component
type: Class
subclass of: Electromagnetic Field Component

Curtosis
type: Class
subclass of: Statistical Measure

Damping Parameter
type: Class
subclass of: Parameter

DAS
type: Class
comment: OPeNDAP DAS (Data Attribute Structure) data file
subclass of: Data File

Data Archive
type: Class
comment: A collection of data storage media and services that is accessible through a unified interface. A data archive may contain datasets from multiple instruments and multiple observatories.

Data File
type: Class
comment: A data product returned as a form of data, such as ascii data or OPeNDAP data or a data file of a particular format such as netcdf or hdf4
subclass of: Data Product
disjoint with: Data Image
disjoint with: Data Plot

Data Image
type: Class
comment: A data product returned as an image
subclass of: Data Product
disjoint with: Data File
disjoint with: Data Plot

Data Plot
type: Class
comment: A data product returned in the form of a plot
subclass of: Data Product
disjoint with: Data Image
disjoint with: Data File

Data Product
type: Class
comment: Generic class representing any data product that may be requested by an agent and delivered by a data service.
disjoint with: Parameter
disjoint with: Dataset
disjoint with: Instrument
disjoint with: Observatory
disjoint with: Detector
disjoint with: Abstract Service
disjoint with: Attribute

Data Quality Code
type: Class
subclass of: Parameter

Dataset
type: Class
comment: A collection of observations of the physical quantity of interest. They usually have a location, observatory, instrument, and parameter (or set of parameters) associated with them. They also have a format along with an epoch over which they were taken.
subclass of: Thing
subclass of: Restriction
  cardinality: 1
  on property: isFromInstrument
subclass of: Restriction
  cardinality: 1
  on property: isFromInstrumentOperatingMode
subclass of: Restriction
  min cardinality: 1
  on property: hasContainedParameter
disjoint with: Parameter
disjoint with: Instrument
disjoint with: Observatory
disjoint with: Data Product
disjoint with: Detector
disjoint with: Abstract Service
disjoint with: Attribute

Date Time Interval
type: Class
comment: The interval between a starting datetime and an ending datetime

DDS
type: Class
comment: OPeNDAP DDS (Data Descriptor Structure) data file
subclass of: Data File

DDX
type: Class
comment: OPeNDAP DDX (Data descriptor in XML) data file
subclass of: Data File

Declination Angle
type: Class
comment: A coordinate that makes up a part of the equatorial coordinate system
subclass of: Coordinate Parameter

Density
type: Class
subclass of: Restriction
  on property: hasCoordinate
  some values from: Time Coordinate
subclass of: Restriction
  on property: hasCoordinate
  some values from: Altitude
subclass of: Parameter

Deployment
type: Class
comment: A platform is deployed during a certain duration of time and over a certain spacial domain. The platform has instruments on it within the scope of this deployment. For example, a boat will carry certain instruments during a deployment, and those instruments will be removed once the deployment is completed. A stationary deployment can last a much longer time, even decades, with the same instrument.
subclass of: Thing
subclass of: Restriction
  cardinality: 1
  on property: hasDeploymentId

Deposition
type: Class
subclass of: Parameter

Detector
type: Class
comment: A device which detects measurements, such as temperature or wind velocity
disjoint with: Parameter
disjoint with: Dataset
disjoint with: Instrument
disjoint with: Observatory
disjoint with: Data Product
disjoint with: Abstract Service
disjoint with: Attribute

Differential Absorption Lidar
type: Class
subclass of: Lidar

Doppler Lidar
type: Class
subclass of: Lidar

Doppler Radar
type: Class
subclass of: Radar

Doppler Velocity
type: Class
subclass of: Velocity

Doppler Width
type: Class
subclass of: Width

Earth
has name: Earth
has sub physical domain: EarthAtmosphere
has sub physical domain: EarthSurface
type: Planet

EarthAtmosphere
has name: Earth Atmosphere
has sub physical domain: EarthStratosphere
has sub physical domain: EarthOzoneLayer
has sub physical domain: EarthThermosphere
has sub physical domain: EarthMesosphere
has sub physical domain: EarthMagnetosphere
has sub physical domain: EarthExosphere
has sub physical domain: EarthTroposphere
has sub physical domain: EarthUpperAtmosphere
has sub physical domain: EarthIonosphere
has super physical domain: Earth
type: Atmosphere

EarthEquator
has latitude: 0.0E0
has name: Equator
has super physical domain: EarthSurface
type: Latitude Circle

EarthExosphere
has maximum altitude in km: 8.0E2
has minimum altitude in km: 5.5E2
has name: Earth Exosphere
has super physical domain: EarthAtmosphere
type: Atmosphere Layer
comment: The region of the Earth Atmosphere above the Ionosphere, where the atmosphere thins out into space. This is the last major atmosphere.

EarthIonosphere
has maximum altitude in km: 5.5E2
has minimum altitude in km: 5.0E1
has name: Earth Ionosphere
has super physical domain: EarthAtmosphere
type: Atmosphere Layer
comment: The region of the Earth Atmosphere containing ions: approximately the mesosphere and thermosphere up to 550 km.

EarthMagnetosphere
has maximum altitude in km: 1.0E5
has minimum altitude in km: 0.0E0
has name: Earth Magnetosphere
has super physical domain: EarthAtmosphere
type: Atmosphere Layer
comment: The region of the Earth Atmosphere where the Earth's magnetic field interacts with the solar wind from the Sun. It extends for tens of thousands of kilometers, with a long tail away from the Sun.

EarthMesosphere
has maximum altitude in km: 8.5E1
has minimum altitude in km: 5.0E1
has name: Earth Mesosphere
has super physical domain: EarthAtmosphere
type: Atmosphere Layer
comment: From about 50 km (upper boundary of the Stratosphere) to the range of 80 km to 85 km, temperature decreasing with height.

EarthNorthPole
has latitude: 9.0E1
has name: North Pole
has super physical domain: EarthSurface
type: Latitude Circle

EarthOzoneLayer
has maximum altitude in km: 5.0E1
has minimum altitude in km: 1.0E1
has name: Earth Ozone Layer
has super physical domain: EarthAtmosphere
type: Atmosphere Layer
comment: Or ozonosphere, the region of the Earth's Atmosphere approximately in the range 10 - 50 km, where stratospheric ozone is found. Note that even within this region, ozone is a minor constituent by volume.

EarthSouthPole
has latitude: -9.0E1
has name: South Pole
has super physical domain: EarthSurface
type: Latitude Circle

EarthStratosphere
has maximum altitude in km: 5.0E1
has minimum altitude in km: 1.7E1
has name: Earth Stratosphere
has super physical domain: EarthAtmosphere
type: Atmosphere Layer
comment: From the 7–17 km range (upper boundary of the Troposphere) to about 50 km, temperature increasing with height.

EarthSurface
has east most longitude: 1.8E2
has name: Earth Surface
has north most latitude: 9.0E1
has south most latitude: -9.0E1
has sub physical domain: EarthNorthPole
has sub physical domain: ArcticCircle
has sub physical domain: AntarcticCircle
has sub physical domain: TropicOfCapricorn
has sub physical domain: Arctic
has sub physical domain: EarthSouthPole
has sub physical domain: TropicOfCancer
has sub physical domain: Antarctic
has sub physical domain: EarthEquator
has super physical domain: Earth
has west most longitude: -1.8E2
type: Surface Region

EarthThermosphere
has maximum altitude in km: 6.4E2
has minimum altitude in km: 8.5E1
has name: Earth Troposphere
has super physical domain: EarthAtmosphere
type: Atmosphere Layer
comment: From 80–85 km (upper boundary of the Mesosphere) to 640+ km, temperature increasing with height.

EarthTroposphere
has maximum altitude in km: 1.7E1
has minimum altitude in km: 0.0E0
has name: Earth Troposphere
has super physical domain: EarthAtmosphere
type: Atmosphere Layer
comment: From the Greek word "tropos" meaning to turn or mix. The troposphere is the lowest layer of the atmosphere starting at the surface going up to between 7 km at the poles and 17 km at the equator with some variation due to weather factors. The troposphere has a great deal of vertical mixing due to solar heating at the surface. This heating warms air masses, which then rise to release latent heat as sensible heat that further buoys the air mass. This process continues until all water vapor is removed. In the troposphere, on average, temperature decreases with height due to expansive cooling.

EarthUpperAtmosphere
has maximum altitude in km: 8.0E2
has minimum altitude in km: 8.5E1
has name: Earth Upper Atmosphere
has super physical domain: EarthAtmosphere
type: Atmosphere Layer
comment: The region of the Earth's Atmosphere above the mesopause.

Electric Charge
type: Class
comment: Class representing the electric charge of a system of particles
subclass of: Parameter
equivalent class: Class
  one of: NegativeElectricCharge
  one of: NegativeOneElectricCharge
  one of: PositiveElectricCharge
  one of: PositiveOneElectricCharge
  one of: ZeroElectricCharge

Electric Current Density
type: Class
subclass of: Current Density

Electric Current Density Component
type: Class
subclass of: Current Density Component

Electric Field
type: Class
subclass of: Electro Magnetic Field

Electric Field Component
type: Class
subclass of: Electromagnetic Field Component

Electric Potential
type: Class
subclass of: Potential

Electric Vector
type: Class
subclass of: Vector

Electro Magnetic Field
type: Class
subclass of: Vector Field

Electromagnetic Field Component
type: Class
subclass of: Field Component

Electromagnetic Radiation
type: Class
subclass of: Parameter

Electromagnetic Radiation Intensity
type: Class
subclass of: Restriction
  on property: hasCoordinate
  some values from: Time Coordinate
subclass of: Parameter

Electron Density
type: Class
subclass of: Ion Density

Electron Parameter
type: Class
equivalent class: Class
  intersection of: Restriction
    has value: NegativeOneElectricCharge
    on property: hasElectricCharge
  intersection of: Parameter

Electron Pressure
type: Class
subclass of: Ion Pressure

Electron State
type: Class
comment: Set of parameters describing a physical domain that all have electric charge = -1
subclass of: Restriction
  all values from: Electron Parameter
  on property: hasStateParameter
subclass of: Physical Domain State

Electron Temperature
type: Class
subclass of: Ion Temperature

Electron Velocity Field
type: Class
subclass of: Ion Velocity Field

Elevation Angle
type: Class
subclass of: Coordinate Parameter

Emission Parameter
type: Class
subclass of: Parameter

Emissivity
type: Class
subclass of: Parameter

Energy Deposition
type: Class
subclass of: Deposition

Energy Flux
type: Class
subclass of: Parameter

Enstrophy
type: Class
subclass of: Parameter

Entropy
type: Class
subclass of: Parameter

Error Parameter
type: Class
subclass of: Parameter

Febry Perot Interferometer
type: Class
comment: A multiple-beam interferometer, usually consisting of two flat plates, with high reflective ability. The plates are set parallel to one another by spacers so that light waves may bounce back and forth between them several times. The requirements for constructive interference of reflected light waves of a given wavelength can be fulfilled only at particular angles, relative to the normal to the plates. Therefore, Fabry-Perot interferometers can be used as spectrometers with high resolution. Used as a laser resonator, the Fabry-Perot reinforces only light of specific frequencies traveling perpendicular to the mirror surfaces, and its successive reflections and amplifications form the oscillating mode.
subclass of: Interferometer

Field Component
type: Class
subclass of: Vector Field

Film
type: Class
subclass of: Imaging Detector
disjoint with: CCD Imaging Detector
disjoint with: Thermometer

Filter Instrument
type: Class
subclass of: Instrument
disjoint with: Optical Instrument
disjoint with: Telescope

FTS
type: Class
comment: FITS Data Image
subclass of: Data Image

FLAT
type: Class
comment: Flat space-delimited data file
subclass of: Data File

Flux
type: Class
subclass of: Parameter

Fourier Transform Ion Cyclotron Mass Spectrometer
type: Class
subclass of: Ion Cyclotron Mass Spectrometer

Frequency
type: Class
subclass of: Parameter

Galactic Latitude
type: Class
comment: A coordinate that makes up a part of the galactic coordinate system
subclass of: Coordinate Parameter

Galactic Longitude
type: Class
comment: A coordinate that makes up a part of the galactic coordinate system
subclass of: Coordinate Parameter

Latitude-Longitude Contour Plot
type: Class
comment: A contour plot of the selected variable versus latitude (Y axis) and longitude (X axis)
subclass of: Restriction
  on property: hasPlottedParameter
  some values from: Latitude Dependent Parameter
subclass of: Restriction
  on property: hasPlottedParameter
  some values from: Longitude Dependent Parameter
subclass of: Data Plot
disjoint with: Time Series Plot

Geo Potential
type: Class
subclass of: Potential

Geographic Bounding Box
type: Class

Geomagnetic Index
type: Class
subclass of: Geophysical Index

Geophysical Index
type: Class
subclass of: Index Parameter

Glow Discharge Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

Goodness Of Fit
type: Class
subclass of: Statistical Measure

Gravitational Potential
type: Class
subclass of: Potential

Ground Based Indices
type: Class
subclass of: Instrument

Ground Based Instrument
type: Class
subclass of: Restriction
  cardinality: 1
  on property: hasLatitude
subclass of: Restriction
  cardinality: 1
  on property: hasLongitude
subclass of: Instrument

Ground Based Radar
type: Class
subclass of: Radar

HF Radar
type: Class
subclass of: Coherent Ionospheric Radar

Hall Conductivity
type: Class
subclass of: Conductivity

Halpha
type: Class
subclass of: Electromagnetic Radiation

He 1083nm Intensity
type: Class
subclass of: Electromagnetic Radiation

He 1083nm Velocity
type: Class
subclass of: Electromagnetic Radiation

Altitude vs Time Plot
type: Class
comment: A contour plot of the selected variable versus Height (Y axis) and Time (X axis)
subclass of: Restriction
  on property: hasPlottedParameter
  some values from: Class
    intersection of: Time Dependent Parameter
    intersection of: Altitude Dependent Parameter
subclass of: Data Plot

Heliograph Optical Instrument
type: Class
subclass of: Optical Instrument

Hour Angle
type: Class
comment: A coordinate that makes up a part of the equatorial coordinate system
subclass of: Coordinate Parameter

HTML
type: Class
comment: HTML form for OPeNDAP based data access
subclass of: Data File

IDL
type: Class
comment: IDL Script Data File
subclass of: Data File

Imager
type: Class
subclass of: Optical Instrument

Imaging Detector
type: Class
subclass of: Detector

Incoherent Scatter Radar
type: Class
subclass of: Radar

Index Parameter
type: Class
subclass of: Parameter

Inductively Coupled Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

INFO
type: Class
comment: OPeNDAP information data file
subclass of: Data File

Instrument
type: Class
comment: A device that measures a physical phenomenon or parameter. At a minimum, it possesses a detector which produces a signal from which the desired quantity is calculated or inferred. The detector signal possesses the information needed to either obtain the value of the phenomenon (e.g, temperature: a voltage is converted into a temperature unit) or infer its value using further processing and computation (magnetic fields: detector intensities at a different wavelengths and polarization states are processed to infer a magnetic field strength). An instrument does not necessarily require a way to store its measured quantity (e.g, a hard disk).
disjoint with: Parameter
disjoint with: Dataset
disjoint with: Observatory
disjoint with: Data Product
disjoint with: Detector
disjoint with: Abstract Service
disjoint with: Attribute

Instrument Operating Mode
type: Class
comment: A configuration which allows the instrument to produce the required signal.

Interface Filter Instrument
type: Class
subclass of: Filter Instrument
disjoint with: Birefringent Filter Instrument
disjoint with: Lyot Filter Instrument

Interferometer
type: Class
comment: An instrument that uses the principle of interference of electromagnetic waves for purposes of measurement. Note: Interferometers may be used to measure a variety of physical variables, such as displacement (distance), temperature, pressure, and strain.
subclass of: Optical Instrument

Ion Composition
type: Class
subclass of: Composition

Ion Cyclotron Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

Ion Density
type: Class
subclass of: Density

Ion Gyro Frequency
type: Class
subclass of: Frequency

Ion Neutral Collision Frequency
type: Class
subclass of: Frequency

Ion Pressure
type: Class
subclass of: Pressure

Ion Sonde
type: Class
subclass of: Sounder

Ion State
type: Class
comment: Set of parameters describing a physical domain that all have electric charge > 0
subclass of: Restriction
  all values from: Cation Parameter
  on property: hasStateParameter
subclass of: Physical Domain State

Ion Temperature
type: Class
subclass of: Temperature

Ion Velocity
type: Class
subclass of: Velocity

Ion Velocity Field
type: Class
subclass of: Velocity Field

Ionospheric Doppler Radar
type: Class
subclass of: Doppler Radar

Iron Lidar
type: Class
subclass of: Lidar

Irradiance
type: Class
subclass of: Parameter

Joule
type: Class
subclass of: Energy Deposition

JPG
type: Class
comment: JPEG Data Image
subclass of: Data Image

Knudsen Effusion Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

LF Radar
type: Class
subclass of: Middle Stmosphere Radar

Latitude
type: Class
subclass of: Coordinate Parameter
disjoint with: Time Coordinate
disjoint with: Altitude
disjoint with: Longitude
disjoint with: Temperature
disjoint with: Velocity
disjoint with: Wind

Latitude Circle
type: Class
subclass of: Restriction
  cardinality: 1
  on property: hasLatitude
subclass of: Surface Line

Latitude Dependent Parameter
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: hasCoordinate
    some values from: Latitude
  intersection of: Parameter

Lidar
type: Class
subclass of: Optical Instrument

Line Emission
type: Class
subclass of: Emission Parameter

Longitude
type: Class
subclass of: Coordinate Parameter
disjoint with: Time Coordinate
disjoint with: Altitude
disjoint with: Latitude
disjoint with: Temperature
disjoint with: Velocity
disjoint with: Wind

Longitude Circle
type: Class
subclass of: Restriction
  cardinality: 1
  on property: hasLongitude
subclass of: Surface Line

Longitude Dependent Parameter
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: hasCoordinate
    some values from: Longitude
  intersection of: Parameter

Lyot Filter Instrument
type: Class
subclass of: Filter Instrument
disjoint with: Birefringent Filter Instrument
disjoint with: Interface Filter Instrument

MF Radar
type: Class
subclass of: Middle Stmosphere Radar

MST Radar
type: Class
subclass of: Middle Stmosphere Radar

Magnetic Activity Index
type: Class
subclass of: Index Parameter

Magnetic Field
type: Class
subclass of: Electro Magnetic Field

Magnetic Field Component
type: Class
subclass of: Electromagnetic Field Component

Magnetic Vector
type: Class
subclass of: Vector

Magnetometer
type: Class
subclass of: Instrument

Mass Density
type: Class
subclass of: Density

Mass Spectrometer
type: Class
subclass of: Spectrometer

Mattauch Herzog Small Volume Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

Mean Molecular Weight
type: Class
subclass of: Weight

Meridian
type: Class
subclass of: Surface Line

Metadata Service
type: Class
comment: Generic class that defines the functionality for querying metadata information from a data archive. The results of the query may be constrained by an associated DataConstraint object. Instances of MetadataService and DataConstraint are created on demand to support a transient query session.
subclass of: Abstract Service

Meteor Wind Radar
type: Class
subclass of: Middle Stmosphere Radar

Michelson Interferometer
type: Class
subclass of: Interferometer

Middle Stmosphere Radar
type: Class
subclass of: Radar

Model
type: Class
subclass of: Instrument

Molecular Density
type: Class
subclass of: Number Density

Molecular Neutral Density
type: Class
subclass of: Molecular Density
subclass of: Neutral Number Density

Molecular Weight
type: Class
subclass of: Weight

Multi Channel Photometer
type: Class
subclass of: Photometer

Multi Collector Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

NegativeElectricCharge
type: Electric Charge
comment: electric charge < 0

NegativeOneElectricCharge
type: Electric Charge
comment: electric charge = -1

NetCDF
type: Class
comment: OPeNDAP Data Object returned as NetCDF (Network Common Data Form) data file
subclass of: Data File

Neutral Density
type: Class
subclass of: Ion Density

Neutral Mass Density
type: Class
subclass of: Neutral Density
subclass of: Mass Density

Neutral Number Density
type: Class
subclass of: Number Density
subclass of: Neutral Density

Neutral Parameter
type: Class
comment: A physical quantity with electric charge = 0
equivalent class: Class
  intersection of: Restriction
    has value: ZeroElectricCharge
    on property: hasElectricCharge
  intersection of: Parameter

Neutral Pressure
type: Class
subclass of: Ion Pressure

Neutral State
type: Class
comment: Set of parameters describing a physical domain that all have electric charge = 0
subclass of: Restriction
  all values from: Neutral Parameter
  on property: hasStateParameter
subclass of: Physical Domain State

Neutral Temperature
type: Class
subclass of: Restriction
  has value: ZeroElectricCharge
  on property: hasElectricCharge
subclass of: Ion Temperature

Neutral Velocity
type: Class
subclass of: Velocity

Neutral Velocity Field
type: Class
subclass of: Ion Velocity Field

Neutral Wind
type: Class
subclass of: Restriction
  on property: hasCoordinate
  some values from: Time Coordinate
subclass of: Wind

Noise
type: Class
subclass of: Parameter

Non Dimensional Quantity
type: Class

Number Density
type: Class
subclass of: Density

Number of Samples
type: Class
subclass of: Statistical Measure

Numerical Interval
type: Class
comment: An interval on the Real numerical axis

Observatory
type: Class
comment: A facility which houses and operates one or more instruments either synoptically or periodically. It has a physical location and operating hours. It can be either manned or remote.
disjoint with: Parameter
disjoint with: Dataset
disjoint with: Instrument
disjoint with: Data Product
disjoint with: Detector
disjoint with: Abstract Service
disjoint with: Attribute

OPeNDAP
type: Class
comment: OPeNDAP data file
subclass of: Data File

Optical Instrument
type: Class
subclass of: Instrument
disjoint with: Filter Instrument
disjoint with: Telescope

Ozone Lidar
type: Class
subclass of: Lidar

Ozone Sounde
type: Class
subclass of: Sounder

Parallel
type: Class
subclass of: Surface Line

Parameter
type: Class
comment: A measured physical property in signal units. It has units and possibly a timestamp. The signal units are not the physical ones, like Gauss or Kelvin, but are something inherent in the detector, like volts or ADU's. The physical units are either calculated or inferred from the signal units.
disjoint with: Dataset
disjoint with: Instrument
disjoint with: Observatory
disjoint with: Data Product
disjoint with: Detector
disjoint with: Abstract Service
disjoint with: Attribute

Particle Energy Deposition
type: Class
subclass of: Energy Deposition

Pedersen Conductivity
type: Class
subclass of: Conductivity

Period
type: Class
subclass of: Parameter

Phased Array Radar
type: Class
subclass of: Radar

Photometer
type: Class
subclass of: Optical Instrument

Physical Domain
type: Class

Physical Domain State
type: Class
comment: A set of one or more related parameters that describe the state of a domain. A physical domain may be associated with more than one state.
equivalent class: Restriction
  min cardinality: 1
  on property: hasStateParameter

Physical Quantity
type: Class

Planet
type: Class
subclass of: Astronomical Object

Platform
type: Class
comment: A surface onto which instruments are deployed to collect data

Polarimeter
type: Class
subclass of: Optical Instrument

Polarization
type: Class
subclass of: Parameter

PositiveElectricCharge
type: Electric Charge
comment: electric charge > 0

PositiveOneElectricCharge
type: Electric Charge
comment: Electric Charge = +1

Potassium Lidar
type: Class
subclass of: Lidar

Potential
type: Class
subclass of: Parameter

Potential Entropy
type: Class
subclass of: Entropy

Potential Temperature
type: Class
subclass of: Temperature

Power
type: Class
subclass of: Parameter

Pressure
type: Class
subclass of: Parameter

Proton Density
type: Class
subclass of: Ion Density

Proton Parameter
type: Class
equivalent class: Class
  intersection of: Parameter
  intersection of: Restriction
    has value: PositiveOneElectricCharge
    on property: hasElectricCharge

Proton Pressure
type: Class
subclass of: Ion Pressure

Proton Temperature
type: Class
subclass of: Ion Temperature

Proton Velocity Field
type: Class
subclass of: Ion Velocity Field

Pulse Length
type: Class
subclass of: Parameter

Radar
type: Class
subclass of: Instrument

Radiance
type: Class
subclass of: Parameter

Raman Lidar
type: Class
subclass of: Lidar

Rayleigh Count
type: Class
subclass of: Count Parameter

Rayleigh Lidar
type: Class
subclass of: Lidar

Reduced Chi Square
type: Class
subclass of: Chi Square

Relative Emission
type: Class
subclass of: Emission Parameter

Resonance Ionization Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

Right Ascension
type: Class
comment: A coordinate that makes up a part of the equatorial coordinate system
subclass of: Coordinate Parameter

ST Radar
type: Class
subclass of: Coherent Ionospheric Radar

Scalar Field
type: Class
subclass of: Parameter

Secondary Ion Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

Sector Field Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

Signal To Noise Ratio
type: Class
subclass of: Parameter

Single Channel Photometer
type: Class
subclass of: Photometer

Sodium Lidar
type: Class
subclass of: Lidar

Solar Flux Index
type: Class
subclass of: Magnetic Activity Index

Solar Index
type: Class
subclass of: Index Parameter

Solar Sunspot Area
type: Class
subclass of: Magnetic Activity Index

Sounder
type: Class
subclass of: Instrument

Source Function
type: Class
subclass of: Electromagnetic Radiation Intensity

Source Function Gradient
type: Class
subclass of: Electromagnetic Radiation Intensity

Space Craft
type: Class
subclass of: Instrument

Spark Source Mass Spectrometer
type: Class
subclass of: Mass Spectrometer

Specific Entropy
type: Class
subclass of: Entropy

Spectro Heliograph Optical Instrument
type: Class
subclass of: Spectrometer
subclass of: Heliograph Optical Instrument

Spectro Photometer
type: Class
subclass of: Photometer
subclass of: Spectrometer

Spectro Polarimeter
type: Class
subclass of: Spectrometer
subclass of: Polarimeter

Spectrograph
type: Class
subclass of: Instrument

Spectrometer
type: Class
subclass of: Optical Instrument

Star
type: Class
subclass of: Astronomical Object

Stationary Deployment
type: Class
comment: A deployment of a platform that does not move, it remains in one place with a given latitude, longitude, and altitude.
subclass of: Restriction
  cardinality: 1
  on property: hasAltitude
subclass of: Restriction
  cardinality: 1
  on property: hasLatitude
subclass of: Restriction
  cardinality: 1
  on property: hasLongitude
subclass of: Deployment

Statistical Measure
type: Class
subclass of: Parameter

Stokes Parameter
type: Class
subclass of: Parameter

Stokes Parameter I
type: Class
subclass of: Stokes Parameter

Stokes Parameter Q
type: Class
subclass of: Stokes Parameter

Stokes Parameter U
type: Class
subclass of: Stokes Parameter

Stokes Parameter V
type: Class
subclass of: Stokes Parameter

STREAM
type: Class
comment: Stream binary file
subclass of: Data File

Strontium Lidar
type: Class
subclass of: Lidar

Sun
has name: Sun
has sub physical domain: SunAtmosphere
type: Star

SunAtmosphere
has name: Sun Atmosphere
has sub physical domain: SunCorona
has super physical domain: Sun
type: Atmosphere

SunCorona
has name: Sun Corona
has super physical domain: SunAtmosphere
type: Atmosphere Layer

Sunspot Number
type: Class
subclass of: Magnetic Activity Index

Surface
type: Class
subclass of: Restriction
  on property: hasSuperPhysicalDomain
  some values from: Astronomical Object
subclass of: Physical Domain

Surface Line
type: Class
subclass of: Restriction
  on property: hasSuperPhysicalDomain
  some values from: Surface
subclass of: Physical Domain

Surface Region
type: Class
subclass of: Restriction
  on property: hasSuperPhysicalDomain
  some values from: Surface
subclass of: Physical Domain

Synthetic Aperture Radar
type: Class
subclass of: Radar

TAB
type: Class
comment: Tab delimited data file
subclass of: Data File

Telescope
type: Class
subclass of: Instrument
disjoint with: Optical Instrument
disjoint with: Filter Instrument

Temperature
type: Class
subclass of: Restriction
  on property: hasCoordinate
  some values from: Altitude
subclass of: Restriction
  on property: hasCoordinate
  some values from: Time Coordinate
subclass of: Parameter
disjoint with: Time Coordinate
disjoint with: Altitude
disjoint with: Longitude
disjoint with: Latitude
disjoint with: Velocity
disjoint with: Wind

Thermometer
type: Class
comment: A device that measures temperature
subclass of: Detector
disjoint with: CCD Imaging Detector
disjoint with: Film

Time Coordinate
type: Class
subclass of: Coordinate Parameter
disjoint with: Altitude
disjoint with: Longitude
disjoint with: Latitude
disjoint with: Temperature
disjoint with: Velocity
disjoint with: Wind

Time Dependent Parameter
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: hasCoordinate
    some values from: Time Coordinate
  intersection of: Parameter

Time Series Plot
type: Class
comment: A plot of the selected variable (Y axis) versus time (X axis)
subclass of: Restriction
  on property: hasPlottedParameter
  some values from: Time Dependent Parameter
subclass of: Data Plot
disjoint with: Latitude-Longitude Contour Plot

TropicOfCancer
has latitude: 2.3E1
has name: Tropic of Cancer
has super physical domain: EarthSurface
type: Latitude Circle

TropicOfCapricorn
has latitude: -2.3E1
has name: Tropic of Capricorn
has super physical domain: EarthSurface
type: Latitude Circle

UHF Radar
type: Class
subclass of: Coherent Ionospheric Radar

VHF Radar
type: Class
subclass of: Coherent Ionospheric Radar

Vector
type: Class
subclass of: Parameter

Vector Component
type: Class
subclass of: Vector

Vector Field
type: Class
subclass of: Parameter

Velocity
type: Class
subclass of: Restriction
  on property: hasCoordinate
  some values from: Time Coordinate
subclass of: Restriction
  on property: hasCoordinate
  some values from: Altitude
subclass of: Parameter
disjoint with: Time Coordinate
disjoint with: Altitude
disjoint with: Longitude
disjoint with: Latitude
disjoint with: Temperature
disjoint with: Wind

Velocity Field
type: Class
subclass of: Vector Field

Velocity Field Component
type: Class
subclass of: Field Component

Velocity Vector
type: Class
subclass of: Vector

Wave Number
type: Class
subclass of: Parameter

Wavelength
type: Class
subclass of: Restriction
  on property: hasCoordinate
  some values from: Time Coordinate
subclass of: Electromagnetic Radiation

Weight
type: Class
subclass of: Parameter

White Light
type: Class
subclass of: Electromagnetic Radiation

Width
type: Class
subclass of: Parameter

Wind
type: Class
subclass of: Parameter
disjoint with: Time Coordinate
disjoint with: Altitude
disjoint with: Longitude
disjoint with: Latitude
disjoint with: Temperature
disjoint with: Velocity

ZeroElectricCharge
type: Electric Charge
comment: electric charge = 0

hasEastMostLongitude
type: DatatypeProperty
type: FunctionalProperty
comment: -180 <= lonngitude <= +180
domain: Class
  union of: Surface Region
  union of: Geographic Bounding Box
range: float

hasMagnitude
type: DatatypeProperty
type: FunctionalProperty
comment: Strength
domain: Class
  union of: Vector
  union of: Vector Field
range: float

hasNorthMostLatitude
type: DatatypeProperty
type: FunctionalProperty
comment: -90 <= latutude <= +90
domain: Class
  union of: Surface Region
  union of: Geographic Bounding Box
range: float

hasSouthMostLatitude
type: DatatypeProperty
type: FunctionalProperty
comment: -90 <= latitude <= +90
domain: Class
  union of: Surface Region
  union of: Geographic Bounding Box
range: float

hasWestMostLongitude
type: DatatypeProperty
type: FunctionalProperty
comment: -180 <= longitude <= +90
domain: Class
  union of: Surface Region
  union of: Geographic Bounding Box
range: float