Units of turbidity from a calibrated nephelometer; SI base unit equivalent: 10-3 kg.m-3
Unit of angular gradient of sound intensity
SI derived unit of spatial gradient of electrical conductance; SI base equivalent: 0.1 S.m-1
SI prefixed unit of length; SI base unit equivalent: 0.1 m
SI derived unit of frequency; SI base unit equivalent: 1000 s-1
SI derived unit of spectral intensity, a directional quantity; SI base unit equivalent: kg.m.s-3
Conventional unit of time duration, ranging from 365 days to 366 days
SI derived unit of solid angle; SI base unit equivalent: 1
SI derived unit of pressure/stress; SI base unit equivalent: 10 kg.m-1.s-2
SI derived unit of spatial gradient of plane angle
Unit of plane or phase angle, accepted for use with SI: 1 deg = (pi/180) rad
Unit of column abundance of molecules in the atmosphere. 1 DU is defined to be 0.01 mm thickness at STP (standard temperature and pressure, 0.00 degC and 1013.25 hPa) and is equivalent of 2.6867 x 1E20 molecules per square metre.
Unit of energy, accepted for use with SI; SI base unit equivalent: 1.602176634E19 kg m2 s-2
SI derived unit of magnetic induction, magnetic flux density; SI base unit equivalent: kg.s-2.A-1
SI derived unit of speed
SI derived unit for magnetic power spectrum commonly used to describe Schumann Resonances. SI base unit equivalent: 1E-9 A.m-1.s
SI derived unit of the scattering coefficient at a given direction; SI base unit equivalent: 0.001 m-1
SI prefixed unit of length; SI base unit equivalent: 1E-9 m
The correct value is not known to, and not computable by, the sender of this data. However, a correct value probably exists.
SI derived unit of radioactivity; SI base unit equivalent: s-1
SI derived unit equivalent of mole fraction; SI base unit equivalent: 1E-12
Unit of plane or phase angle, accepted for use with SI: 1 '' = (pi/648000) rad
Unit of time, accepted for use with SI: 1 min = 60 s
Conventional unit of pressure, equal to 1 hPa; SI base unit equivalent: 100 kg.m-1.s-2
SI derived unit of mass concentration; SI base unit equivalent: 1E-12 kg.m-3
SI derived unit of density, mass density
SI derived unit of amount per unit mass; SI base unit equivalent: 1E-15 mol.kg-1
The correct value is not readily available to the sender of this data. Furthermore, a correct value may not exist
SI derived unit of the scattering coefficient at a given direction; SI base unit equivalent: 1E-6 m-1
most probable number index number in 1 millilitre
Unit of expected number concentration of bacteria in the original sample based upon the statistical probability of the coincidence of microorganisms in each sample replicate
Unit of radioactivity concentration; SI base unit equivalent: 0.001 s-1.m-3
SI derived unit of angular velocity; SI base unit equivalent: s-1
SI derived unit of radiant exposure; SI base unit equivalent: m2.kg.s-2
Unit of time, accepted for use with SI: 1 d = 86400 s
SI derived unit of volume fraction, equivalent to pptv (parts per trillion by volume); SI base unit equivalent: 1E-12
SI derived unit of mass fraction, dimensionless; SI base unit equivalent: 0.001
SI derived unit of absorbed dose (of ionizing radiation); SI base unit equivalent: m2.s-2
SI derived unit of volume
SI derived unit of time derivative of pressure; SI base unit equivalent: 100 kg.m-1.s-3
micrograms per cubic metre at 20 degrees
Conventional unit of gravity acceleration; g0 = 9.80665 m.s-2
SI base unit of amount of substance
Unit of area density, equal to 0.1 kg.m-2
SI prefixed unit of length; SI base unit equivalent: 0.01 m
SI derived unit of speed; SI base unit equivalent: 1/3.6E6 m.s-1
Negative decimal logarithm of the hydrogen ion activity ('effective' concentration) specified in moles per litre; SI base unit equivalent: 0.001 m-3
SI derived unit of volume; SI base unit equivalent: 0.001 m3
SI derived unit of power, radiant flux; SI base unit equivalent: kg.m2.s-3
micrograms per cubic metre at 25 degrees
SI derived unit of specific volume
decipascal per second (microbar per second)
SI derived unit of time derivative of pressure, pressure tendency; SI base unit equivalent: 0.1 kg.m-1.s-3
Unit of volume fraction, equivalent to SI derived unit: 1E-12
SI derived unit of spatial gradient of speed
SI derived unit of volume fraction; SI base unit equivalent: 1
SI derived unit of temperature, as defined by ITS-90; SI base unit equivalent: K, with t/degC = T/K + 273.15
metres to the two thirds power per second
SI derived unit of frequency; SI base unit equivalent: 1E9 s-1
Unit of mass, accepted for use with SI; SI base unit equivalent: 1000 kg
SI derived unit of energy, work, heat; SI base unit equivalent: kg.m2.s-2
SI derived unit of heat flux density or irradiance; SI base unit equivalent: kg.s-3
The height of a given point in the atmosphere in units proportional to the potential energy of unit mass (geopotential) at this height relative to sea level. (AMS Glossary of Meteorology)
SI derived unit of mole fraction; SI base unit equivalent: 1
CGS unit of acceleration, equal to one thousandth of a Gal (1 Gal = 0.01 m.s-2)
Unit of color according to the Platinum/Cobalt or Apha-Hazen scale
kelvin square metre per kilogram per second
SI derived unit of potential vorticity
SI prefixed unit of length; SI base unit equivalent: 0.001 m
SI derived unit of area; SI base unit equivalent: 1E-4 m2
Imperial/US unit of length, equal to 1200/3937 metre or 0.3048 metre (approximately)
SI derived quantity with dimension of squared speed
SI derived unit of pressure or equivalent quantity
SI derived unit of pressure/stress; SI base unit equivalent: kg.m-1.s-2
SI derived unit of electrical resistance, impedance, reactance
milligrams per cubic metre at 25 degrees
Conventional unit of time derivative of pressure, pressure tendency; SI base unit: 10/432 kg.m-1.s-3
SI derived unit of quantity with dimension of reciprocal length, e.g., optical attenuation coefficients; SI base unit equivalent: 0.001 m-1
Conventional unit of speed, equal to 1 nmi/h; SI base unit equivalent: (1852/3600)m.s-1
SI derived unit of magnetic flux; SI base unit equivalent: kg.m2.s-2.A-1
SI derived unit of sea surface wave variance spectral density
Unit of spatial gradient of sound intensity
Unit of acceleration divided by distance,1 E = 1E-9 Gal/cm; SI base unit equivalent: 1E-9 s-2
SI derived unit of frequency; SI base unit equivalent: s-1
SI derived unit of spatial gradient of electrical conductance; SI base unit equivalent: 1E-4 m-3.kg-1.s3.A2
SI derived unit of linear mass density or quantity with dimension of M.L-1
Unit of angular speed, accepted for use with SI
SI base unit of mass
SI derived unit of frequency; SI base unit equivalent: 1E6 s-1
watt per square metre per steradian per hertz
SI derived unit of spectral radiance per unit frequency; SI base unit equivalent: kg.s-2
SI derived unit of time derivative of pressure; SI base unit equivalent: 1/108 kg.m-1.s-3
SI derived unit of mole fraction; SI base unit equivalent: 1E-9
Volt squared per metre squared per Hertz
'SI derived unit for electric field spectral density commonly used to describe Schumann Resonances. SI base unit equivalent: kg2.m2.s-5.A-2'
SI derived unit of equivalent dose (of ionizing radiation); SI base unit equivalent: 0.001 m2.s-2
Imperial/US unit of length, equal to 25.4 millimetres
metre to the two thirds power per second
SI derived unit of the quantity with dimension of L^(2/3) T-1
SI derived unit of spatial gradient of temperature per 100 metres; SI base unit equivalent: 0.01 K.m-1
SI derived unit of mass fraction, equivalent to pptm (parts per trillion by mass) or ppt (parts per trillion); SI base unit equivalent: 1E-12
SI derived unit of speed; SI base unit equivalent: 0.001 m.s-1
Conventional unit of spatial gradient of speed; SI base unit equivalent: 1852/3600000 s-1
SI derived unit of acceleration
SI derived unit of volumetric radioactivity concentration; SI base unit equivalent: 0.001 s-1.m-3
SI derived unit of quantity with dimension of reciprocal length, e.g., wave number, optical power, curvature, spatial frequency
Conventional unit of length; SI base unit equivalent: 1852 m
SI derived unit of luminous flux; SI base unit equivalent: 1 cd = 4π lm for a uniform source emitting in all directions.
SI derived unit of sea surface wave directional variance spectral density
Unit of cloud amount, expressed as number of eighths of the sky dome that is covered by clouds; SI base unit equivalent: 0.125
SI derived unit equivalent to expressing mole fraction in parts per thousand; SI base unit equivalent: 0.001
SI derived unit of electrical inductance; SI base unit equivalent: kg.m2.s-2.A-2
SI derived unit of radiance; SI base unit equivalent: kg.s-3
SI derived unit of time derivative of mass fraction; SI base unit equivalent: s-1
SI derived unit of voltage, electrical potential difference, electromotive force; SI base unit equivalent: 0.001 m2.kg.s-3.A-1
SI derived unit of covariance of wind speed and temperature or the product of wind speed and temperature
SI derived unit of frequency; SI base unit equivalent: 1E12 s-1
watt per square metre per steradian per metre
SI derived unit of spectral radiance per unit wavelength; SI base unit equivalent: kg.m-1.s-3
SI derived unit of spatial gradient of speed; SI base unit equivalent: 0.001 s-1
SI derived unit of radioactivity area concentration; SI base unit equivalent: s-1.m-2
SI derived unit of the second moment of area, area moment of inertia
Dimensionless number, expressed as a fraction of 1000000; SI base unit equivalent: 0.000001; also referred as parts per million (ppm)
decipascals per second (microbar per second)
Unit of volume fraction, equivalent to SI derived unit: 1E-6
SI base unit of length
SI derived unit of electric charge; SI base unit equivalent: s.A
Dimensionless number, expressed as a fraction of 100; SI base unit equivalent: 0.01
Conventional unit of time derivative of pressure, pressure tendency; SI base unit: 1000 kg.m-1.s-3
SI derived unit of mass fraction, equivalent to ppbm (parts per billion per mass) or ppb (parts per billion); SI base unit equivalent: 1E-9
SI derived unit of speed; SI base unit equivalent: 1000/86400 m.s-1
SI derived unit of volume flow rate or time derivative of volume
watts per square metre per steradian centimetre
watts per square metre per steradian metre
Unit of length, accepted for use with SI: 1 AU = 149597870700 m, roughly the distance from Earth to the Sun
Unit of radiant exposure, equal to 4.184E7 J.m-2
Unit of sound intensity, accepted for use with SI
SI derived unit of speed; SI base unit equivalent: 1/360000 m.s-1
Conventional unit of mass; 1 u = 1 Da (Dalton) = 1.66053906660(50)E-27 kg
SI base unit of thermodynamic temperature
SI derived unit of density or mass concentration; SI base unit equivalent: 1E-6 kg/m3
millimetres to the sixth power per cubic metre
SI derived unit of amount per unit mass; SI base unit equivalent: 1E-6 mol.kg-1
SI derived unit of illuminance; SI base unit equivalent: cd.m-2
SI prefixed unit of length; SI base unit equivalent: 1000 m
SI derived unit of amount per unit mass; SI base unit equivalent: 1E-12 mol.kg-1
Unit of area, accepted for use with SI: 1 ha = 1E4 m2
Unit of time, accepted for use with SI: 1 h = 3600 s
SI derived unit of electrical conductance; SI base unit equivalent: kg-1.m-2.s3.A2
SI derived unit of speed; SI base unit equivalent: 1000/3600 m.s-1
SI derived unit of mass fraction, equivalent to ppmm (parts per million by mass) or ppm (parts per million); SI base unit equivalent: 1E-6
Conventional unit of velocity
SI derived unit for magnetic power spectrum commonly used to describe Schumann Resonances. SI base unit equivalent: 1E-12 A.m-1.s
Dimensionless number, expressed as a fraction of 1000; SI base unit equivalent: 0.001
SI derived unit of mass concentration; SI base unit equivalent: 1E-9 kg.m-3
Unit of volume fraction, equivalent to SI derived unit: 1E-9
SI derived unit of spatial gradient of temperature per metre; SI base unit equivalent: K.m-1
SI derived unit of equivalent dose (of ionizing radiation); SI base unit equivalent: m2.s-2
Conventional unit of time, equivalent to 604800 s
SI prefixed unit of length; SI base unit equivalent: 1E-6 m
SI derived unit of electrical capacitance; SI base unit equivalent: kg-1.m-2.s4.A2
Dimensionless; SI base unit equivalent: 1
SI derived unit of quantity with dimension of M-2.T-1
SI derived unit of spatial gradient of electric conductance
SI derived unit of time derivative of mass area density
SI derived unit of area density
millimetre to the sixth power per cubic metre
SI derived unit of quantity with dimension of L3; SI base unit equivalent: 1E-18 m3
Unit of atmospheric refractivity, the refractivity, N, is related to the refractive index, n, by the formula N=1E6(n-1). N is therefore dimensionless but values computed by the formula are by convention described as being in 'N units'
SI derived unit of volumetric mixing ratio, equivalent to ppbv (parts per billion by volume); SI base unit equivalent: 1E-9
SI derived unit of mass fraction; SI base unit equivalent: 1
SI base unit of luminous intensity
Unit of square of phase or plane angle, accepted for use with SI
Conventional unit of pressure; SI base unit equivalent: 1E-4 kg.m-1.s-2
SI derived unit of force, weight
Unit of number concentration of viable bacteria or fungal cells in a sample as a result of a plate count test
SI derived unit of time integrated radioactivity concentration; SI base unit equivalent: m-3
watt per square metre per steradian per inverse metre
SI derived unit of spectral radiance per inverse metre; SI base unit equivalent: kg.m.s-3
SI derived unit of area
SI derived unit of temporal derivative of pressure/stress; SI base unit equivalent: kg.m-1.s-3
SI derived unit of voltage, electrical potential difference, electromotive force; SI base unit equivalent: kg.m2.s-3.A-1
Unit of quantity with dimension of reciprocal length, e.g., optical attenuation coefficients; SI base unit equivalent: 1E-6 m-1
SI derived unit of amount per unit mass; SI base unit equivalent: 1E-9 mol.kg-1
SI base unit of electric current
SI derived unit of density, equivalent to kilograms per litre; SI base unit equivalent: 1000 kg.m-3
SI derived unit of specific volume; SI base unit equivalent: 1E-6 m-3
There is no value (categorical data)
SI derived unit of density or mass concentration; SI base unit equivalent: 0.001 kg.m-3
SI derived unit of speed; SI base unit equivalent: 0.01 m.s-1
SI base unit of time
SI derived unit of the scattering coefficient at a given direction
SI derived unit of pressure/stress; SI base unit equivalent: 100 kg.m-1.s-2
Astronomical unit of length, 1 pc = 64800/Π AU
SI derived unit of amount concentration; SI base unit equivalent: 0.001 mol.m-3
SI derived unit of mass concentration; SI base unit equivalent: 1 kg.m-3
SI derived unit of kinematic viscosity, thermal diffusivity, diffusion coefficient
SI derived unit of mass concentration; SI base unit equivalent: 1E-6 kg.m-3
Conventional unit, equivalent to per mille; SI based unit equivalent: 0.001
SI derived unit of volumetric mixing ratio, equivalent to ppmv (parts per million by volume); SI base unit equivalent: 1E-6
SI derived unit of quantity with dimension of T.L-1
SI derived unit of spatial gradient of temperature
Unit of plane or phase angle, accepted for use with SI: 1 ' = (pi/10800) rad
SI derived unit of radioactivity concentration; SI base unit equivalent: s-1.m-3
kelvin square metres per kilogram per second
SI derived unit of specific energy or specific potential enthalpy; SI base unit equivalent: m2.kg.s-2.kg-1
SI derived unit of mole fraction; SI base unit equivalent: 1E-6
SI derived unit of pressure/stress, equal to 1000 Pa; SI base unit equivalent: 1000 kg.m-1.s-2
watt per square metre per steradian per inverse centimetre
SI derived unit of spectral radiance per unit wavenumber, wavenumber expressed in 100 m-1; equivalent to W.m-2.sr-1.(cm-1)-1; SI base unit equivalent: 0.01 kg.m.s-3
SI derived unit of time derivative of pressure; SI base unit equivalent: 1/36 kg.m-1.s-3
SI derived unit of plane angle; SI base unit equivalent: 1
Conventional unit of time duration of between 28-31 days whereby 12 months amount to one year
SI derived unit of second order time derivative
SI derived unit of time derivative of mass fraction; SI base unit equivalent: 0.001 s-1
Conventional unit of pressure, equal to 133.322387415 Pa