Name	Notation	Description	Types	Status
Aerodrome maximum wind gust speed	aerodromeMaximumWindGustSpeed	Maximum wind speed in the 10 minute period of observation. It...	Concept , quantity kind , space and time quantity kind	stable
Aerodrome mean wind direction	aerodromeMeanWindDirection	The mean true direction in degrees from which the wind is blo...	Concept , quantity kind , space and time quantity kind	stable
Aerodrome mean wind speed	aerodromeMeanWindSpeed	The mean speed of the wind over the 10-minute period immediat...	Concept , quantity kind , space and time quantity kind	stable
Aerodrome minimum horizontal visibility	aerodromeMinimumHorizontalVisibility	The minimum horizontal visibility that is reported when the h...	Concept , quantity kind , space and time quantity kind	stable
Aerodrome minimum visibility direction	aerodromeMinimumVisibilityDirection	When the minimum horizontal visibility is reported, its gener...	Concept , quantity kind , space and time quantity kind	stable
Aeronautical prevailing horizontal visibility	aeronauticalPrevailingHorizontalVisibility	The greatest visibility value, observed in accordance with th...	Concept , quantity kind , space and time quantity kind	stable
Aeronautical visibility	aeronauticalVisibility	The greater of:(a) The greatest distance at which a black obj...	Concept , quantity kind , space and time quantity kind	stable
Air temperature	airTemperature	The temperature indicated by a thermometer exposed to the air...	Concept , quantity kind , thermodynamics quantity kind	stable
Altimeter setting (QNH)	altimeterSettingQnh	Altimeter setting (also known as QNH) is defined as barometri...	Concept , quantity kind , mechanics quantity kind	stable
Atmospheric pressure	atmosphericPressure	The atmospheric pressure on a given surface is the force per ...	Concept , quantity kind , mechanics quantity kind	stable
Depth of runway deposit	depthOfRunwayDeposit	Depth of deposit on surface of runway	Concept , quantity kind , space and time quantity kind	stable
Dew-point temperature	dewPointTemperature	The temperature to which a given air parcel must be cooled at...	Concept , quantity kind , thermodynamics quantity kind	stable
Geometric height	geometricHeight	Vertical distance (Z) of a level, a point or an object consid...	Concept , quantity kind , space and time quantity kind	stable
Height of base of cloud	heightOfBaseOfCloud	For a given cloud or cloud layer, vertical distance (measured...	Concept , quantity kind , space and time quantity kind	stable
Horizontal visibility	horizontalVisibility	The greatest distance determined in the horizontal plane at t...	Concept , quantity kind , space and time quantity kind	stable
Maximum diameter of hailstones	maximumDiameterOfHailstones	Maximum diameter (size) of hailstone (observed).	Concept , quantity kind , space and time quantity kind	stable
Maximum wind gust speed	maximumWindGustSpeed	Nominal maximum speed of wind during a given period; usually ...	Concept , quantity kind , thermodynamics quantity kind	stable
Pressure tendency	pressureTendency	Rate of change of atmospheric pressure with respect to time.	Concept , quantity kind , mechanics quantity kind	stable
Runway contamination coverage	runwayContaminationCoverage	Proportion of runway that is contaminated. A runway is consid...	Concept , quantity kind	stable
Runway friction coefficient	runwayFrictionCoefficient	Quantitative assessment of friction coefficient of runway sur...	Concept , quantity kind	stable
Runway visual range (RVR)	runwayVisualRangeRvr	The range over which the pilot of an aircraft on the centre l...	Concept , quantity kind , space and time quantity kind	stable
Sea surface temperature	seaSurfaceTemperature	Temperature of the sea water at surface.	Concept , quantity kind , thermodynamics quantity kind	stable
Snow depth water equivelant	snowDepthWaterEquivalent	Depth of lying snow expressed as measure of equivalent depth ...	Concept , quantity kind , space and time quantity kind	stable
Total precipitation	totalPrecipitation	Total amount of precipitation measured over a defined period.	Concept , quantity kind , mechanics quantity kind	stable
Total precipitation rate	totalPrecipitationRate	Rate of total precipitation (e.g. combination of convective a...	Concept , quantity kind , mechanics quantity kind	stable
Total snow depth	totalSnowDepth	Depth of lying snow.	Concept , quantity kind , space and time quantity kind	stable
UV index	uvIndex	Global Solar UVI is formulated using the International Commis...	Concept , quantity kind	stable
Vertical visibility	verticalVisibility	Maximum distance at which an observer can see and identify an...	Concept , quantity kind , space and time quantity kind	stable
Wind direction	windDirection	Direction from which wind is blowing.	Concept , quantity kind , space and time quantity kind	stable
Wind speed	windSpeed	Ratio of the distance covered by the air to the time taken to...	Concept , quantity kind , space and time quantity kind	stable