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Register: Code Table D-2: Physical quantity kinds

URI: http://codes.wmo.int/common/quantity-kind

WMO No. 306 Vol I.3 Common Code-table D-2, Physical quantity kinds.

Contents

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