Name: Atmosphere

Definition:
Pertaining to characteristics or attributes of the planetary atmosphere (e.g., wind, clouds). May include an unspecified mixture of atmosphere characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA000

Name: Cold Front

Definition:
A boundary between warm and cold air masses that moves so that the colder air replaces the warmer air; the leading edge of a relatively cold air mass.

CC: WA010

Name: Warm Front

Definition:
A boundary between warm and cold air masses that moves so that the warmer air replaces the colder air; the leading edge of a relatively warm air mass.

CC: WA020

Name: Occluded Front

Definition:
A composite of two weather fronts formed as a cold front overtakes a warm front or a quasi-stationary front. The three basic types are: Cold occlusion - the coldest air lies behind the cold front, which then undercuts the warm front and at the surface coldest air replaces less-cold air; Warm occlusion - the coldest air lies ahead of the warm front, thus the original cold front is forced aloft and at the surface the coldest air is replaced by less-cold air; and, Neutral occlusion - there is no appreciable temperature difference between the cold air masses of the cold and warm fronts. (See also COLD_FRONT and WARM_FRONT .)

CC: WA030

Name: Stationary Front

Definition:
A boundary between warm and cold air masses which is moving at a speed less than five knots (also known as a quasi-stationary front). (See also COLD_FRONT and WARM_FRONT .)

CC: WA040

Name: Precipitation Region

Definition:
A region where precipitation is occurring (e.g., rain, snow, hail), over land or water.

CC: WA100

Name: Rain Region

Definition:
A region in which rain is falling, over land or water.

CC: WA110

Name: Snow Region

Definition:
A region in which snow is falling, over land or water.

CC: WA120

Name: Fog Region

Definition:
A region of near-surface fog, over land or water.

CC: WA130

Name: Low Visibility Region

Definition:
A region of near-surface reduced visibility, over land or water.

CC: WA150

Name: Low Pressure Center

Definition:
The location of the centre of an atmospheric low pressure region.

CC: WA160

Name: High Pressure Center

Definition:
The location of the centre of an atmospheric high pressure region.

CC: WA170

Name: Atmospheric Climatology

Definition:
Pertaining to climatologic characteristics or attributes of the atmosphere. May include an unspecified mixture of atmospheric climatology characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA200

Name: Atmospheric Climatology, Local

Definition:
Pertaining to localized climatologic characteristics or attributes of the atmosphere (e.g., at a point). May include an unspecified mixture of local atmospheric climatology characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA210

Name: Atmospheric Climatology, Surface

Definition:
Pertaining to climatologic characteristics or attributes of the atmosphere associated with a specific type of generally horizontal surface (e.g., ground level, mean sea level, constant altitude). May include an unspecified mixture of atmospheric surface climatology characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA220

Name: Atmospheric Climatology, Terrain Surface

Definition:
Pertaining to climatologic characteristics or attributes of the atmosphere at the terrain surface (e.g., ground or sea level). May include an unspecified mixture of atmospheric terrain surface climatology characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA230

Name: Atmospheric Observation

Definition:
Pertaining to observed characteristics or attributes of the atmosphere. May include an unspecified mixture of observed atmospheric characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA300

Name: Atmospheric Observation, Local

Definition:
Pertaining to locally observed characteristics or attributes of the atmosphere (e.g., at a point). May include an unspecified mixture of locally observed atmospheric characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA310

Name: Atmospheric Observation, Profile

Definition:
Pertaining to a localized vertical profile of observed characteristics or attributes of the atmosphere. May include an unspecified mixture of local vertical profile observed atmospheric characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA320

Name: Atmospheric Forecast

Definition:
Pertaining to forecasted characteristics or attributes of the atmosphere. May include an unspecified mixture of forecasted atmospheric characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA400

Name: Atmospheric Forecast, Local

Definition:
Pertaining to localized forecasted characteristics or attributes of the atmosphere (e.g., at a point). May include an unspecified mixture of local forecasted atmospheric characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA410

Name: Atmospheric Forecast, Profile

Definition:
Pertaining to localized vertical profile of forecasted characteristics or attributes of the atmosphere. May include an unspecified mixture of local vertical profile forecasted atmospheric characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA420

Name: Atmospheric Forecast, Surface

Definition:
Pertaining to forecasted characteristics or attributes of the atmosphere associated with a specific type of generally horizontal surface (e.g., ground level, mean sea level, constant altitude). May include an unspecified mixture of forecasted atmospheric surface characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA430

Name: Atmospheric Forecast, Terrain Surface

Definition:
Pertaining to forecasted characteristics or attributes of the atmosphere at the terrain surface (e.g., ground or sea level). May include an unspecified mixture of forecasted atmospheric characterizations at the level of the terrain surface which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA440

Name: Atmospheric Forecast, Volume

Definition:
Pertaining to forecasted characteristics or attributes of the atmosphere occurring within a three-dimensional region. May include an unspecified mixture of forecasted atmospheric volume characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA450

Name: Atmospheric Analysis

Definition:
Pertaining to characteristics or attributes of the atmosphere determined through a process of analysis. May include an unspecified mixture of atmospheric analysis characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA500

Name: Atmospheric Analysis, Surface

Definition:
Pertaining to characteristics or attributes of the atmosphere determined through a process of analysis, which are associated with a specific type of generally horizontal surface (e.g., ground level, mean sea level, constant altitude). May include an unspecified mixture of analysis-derived atmospheric surface characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA510

Name: Atmospheric Analysis, Terrain Surface

Definition:
Pertaining to characteristics or attributes of the atmosphere determined through a process of analysis, which are located at/near the terrain surface (e.g., ground or sea level). May include an unspecified mixture of analysis-derived atmospheric characterizations at the level of the terrain surface which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA520

Name: Atmospheric Analysis, Volume

Definition:
Pertaining to characteristics or attributes of the atmosphere determined through a process of analysis, which occur within a three-dimensional region. May include an unspecified mixture of analysis-derived atmospheric volume characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WA530

Name: Wind Rose

Definition:
Wind-related characteristics or attributes of the atmosphere organized by direction with respect to a point (e.g., wind statistics such as maximum speed, mean speed, frequency).

CC: WA610

Name: Space

Definition:
Pertaining to characteristics or attributes of space or near-space (e.g., solar wind, ionospheric scintillation). May include an unspecified mixture of space characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment. (See also ASTRONOMICAL_STATION .)

CC: WS000

Name: Sol (the Sun)

Definition:
The central star of the solar system containing the planet Earth. May include an unspecified mixture of solar characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WS100

Name: Solar Electromagnetic Emissions, Radio Flux

Definition:
Solar generated continuous radio-frequency emissions.

CC: WS110

Name: Solar Electromagnetic Emissions, Radio Burst

Definition:
Solar generated burst radio-frequency emissions.

CC: WS111

Name: Solar Energetic Particles

Definition:
Solar generated charged particle fluxes, including electron, proton, and alpha particles.

CC: WS120

Name: Solar Wind

Definition:
The high-speed stream of charged particles emanating from a sun.

CC: WS130

Name: Ionosphere

Definition:
An electrically conducting set of layers of the planetary atmosphere, extending from altitudes of approximately 50 to 400 kilometers, caused by ionization of rarified atmospheric gases by incident solar radiation. May include an unspecified mixture of ionospheric characterizations which may be capable of elaboration or separation into individual object types based on status/type grouping information which was unable to be determined at the time of classification assignment.

CC: WS200

Name: Ionospheric Electron Density

Definition:
Electron-related characteristics or attributes of the planetary ionosphere (e.g., electron density, vertical total electron count, electron layer data such as critical frequencies and heights of the layers).

CC: WS210

Name: Ionospheric Scintillation

Definition:
Distortion of the propagation of electromagnetic radiation through the planetary ionosphere due to medium density irregularities.

CC: WS220

Name: Magnetosphere

Definition:
The region of space where the planetary magnetic field balances the pressure of the solar wind.

CC: WS300

Name: Magnetospheric Plasma

Definition:
The flux of charged particles within the planetary magnetosphere.

CC: WS310