stable
Contents
Name | Notation | Description | Types | Status |
---|---|---|---|---|
minute (angle) | ' | Unit of plane or phase angle, accepted for use with SI: 1 ' =... | Concept | stable |
second (angle) | '' | Unit of plane or phase angle, accepted for use with SI: 1 '' ... | Concept | stable |
dimensionless | 1 | Dimensionless; SI base unit equivalent: 1 | Concept | stable |
ampere | A | SI base unit of electric current | Concept | stable |
astronomical unit | AU | Unit of length, accepted for use with SI: 1 AU = 149597870700... | Concept | stable |
becquerel | Bq | SI derived unit of radioactivity; SI base unit equivalent: s-... | Concept | stable |
becquerel per litre | Bq.l-1 | Unit of radioactivity concentration; SI base unit equivalent:... | Concept | stable |
becquerel per square metre | Bq.m-2 | SI derived unit of radioactivity area concentration; SI base ... | Concept | stable |
becquerel per cubic metre | Bq.m-3 | SI derived unit of radioactivity concentration; SI base unit ... | Concept | stable |
becquerel second per cubic metre | Bq.s.m-3 | SI derived unit of time integrated radioactivity concentratio... | Concept | stable |
coulomb | C | SI derived unit of electric charge; SI base unit equivalent: ... | Concept | stable |
colony-forming unit per millilitre | CFU.ml-1 | Unit of number concentration of viable bacteria or fungal cel... | Concept | stable |
Dobson Unit | DU | Unit of column abundance of molecules in the atmosphere. 1 DU... | Concept | stable |
Eötvös | E | Unit of acceleration divided by distance,1 E = 1E-9 Gal/cm; S... | Concept | stable |
farad | F | SI derived unit of electrical capacitance; SI base unit equiv... | Concept | stable |
gigahertz | GHz | SI derived unit of frequency; SI base unit equivalent: 1E9 s-... | Concept | stable |
gray | Gy | SI derived unit of absorbed dose (of ionizing radiation); SI ... | Concept | stable |
henry | H | SI derived unit of electrical inductance; SI base unit equiva... | Concept | stable |
Hazen unit | HU | Unit of color according to the Platinum/Cobalt or Apha-Hazen ... | Concept | stable |
hertz | Hz | SI derived unit of frequency; SI base unit equivalent: s-1 | Concept | stable |
joule | J | SI derived unit of energy, work, heat; SI base unit equivalen... | Concept | stable |
joule per kilogram | J.kg-1 | SI derived unit of specific energy or specific potential enth... | Concept | stable |
joule per square metre | J.m-2 | SI derived unit of radiant exposure; SI base unit equivalent:... | Concept | stable |
kelvin | K | SI base unit of thermodynamic temperature | Concept | stable |
kelvin per metre | K.m-1 | SI derived unit of spatial gradient of temperature | Concept | stable |
kelvin metre per second | K.m.s-1 | SI derived unit of covariance of wind speed and temperature o... | Concept | stable |
kelvin square metre per kilogram per second | K.m2.kg-1.s-1 | SI derived unit of potential vorticity | Concept | stable |
megahertz | MHz | SI derived unit of frequency; SI base unit equivalent: 1E6 s-... | Concept | stable |
most probable number index number in 1 millilitre | MPN.ml-1 | Unit of expected number concentration of bacteria in the orig... | Concept | stable |
per megametre | Mm-1 | Unit of quantity with dimension of reciprocal length, e.g., o... | Concept | stable |
per megametre per steradian | Mm-1.sr-1 | SI derived unit of the scattering coefficient at a given dire... | Concept | stable |
newton | N | SI derived unit of force, weight | Concept | stable |
newton per square metre | N.m-2 | SI derived unit of pressure or equivalent quantity | Concept | stable |
nephelometric turbidity unit | NTU | Units of turbidity from a calibrated nephelometer; SI base un... | Concept | stable |
N units | N_units | Unit of atmospheric refractivity, the refractivity, N, is rel... | Concept | stable |
ohm | Ohm | SI derived unit of electrical resistance, impedance, reactanc... | Concept | stable |
pascal | Pa | SI derived unit of pressure/stress; SI base unit equivalent: ... | Concept | stable |
pascal per second | Pa.s-1 | SI derived unit of temporal derivative of pressure/stress; SI... | Concept | stable |
siemens | S | SI derived unit of electrical conductance; SI base unit equiv... | Concept | stable |
siemens per metre | S.m-1 | SI derived unit of spatial gradient of electric conductance | Concept | stable |
sievert | Sv | SI derived unit of equivalent dose (of ionizing radiation); S... | Concept | stable |
tesla | T | SI derived unit of magnetic induction, magnetic flux density;... | Concept | stable |
terahertz | THz | SI derived unit of frequency; SI base unit equivalent: 1E12 s... | Concept | stable |
volt | V | SI derived unit of voltage, electrical potential difference, ... | Concept | stable |
watt | W | SI derived unit of power, radiant flux; SI base unit equivale... | Concept | stable |
watt per metre per steradian | W.m-1.sr-1 | SI derived unit of spectral intensity; SI base unit equivalen... | Concept | stable |
watt per square metre | W.m-2 | SI derived unit of heat flux density or irradiance; SI base u... | Concept | stable |
watt per square metre per steradian | W.m-2.sr-1 | SI derived unit of radiance; SI base unit equivalent: kg.s-3 | Concept | stable |
watt per square metre per steradian per inverse centimetre | W.m-2.sr-1.cm | SI derived unit of spectral radiance per wave number, wave nu... | Concept | stable |
watt per square metre per steradian per inverse metre | W.m-2.sr-1.m | SI derived unit of spectral radiance per wave number; SI base... | Concept | stable |
watt per cubic metre per steradian | W.m-3.sr-1 | SI derived unit of spectral radiance; SI base unit equivalent... | Concept | stable |
Weber | Wb | SI derived unit of magnetic flux; SI base unit equivalent: kg... | Concept | stable |
year | a | Conventional unit of time, equivalent to 31536000 s | Concept | stable |
centibar per 12 hours | cb.(12h)-1 | Conventional unit of time derivative of pressure, pressure te... | Concept | stable |
centibar per second | cb.s-1 | Conventional unit of time derivative of pressure, pressure te... | Concept | stable |
candela | cd | SI base unit of luminous intensity | Concept | stable |
centimetre | cm | SI prefixed unit of length; SI base unit equivalent: 0.01 m | Concept | stable |
per cubic centimetre | cm-3 | SI derived unit of specific volume; SI base unit equivalent: ... | Concept | stable |
centimetre per hour | cm.h-1 | SI derived unit of speed; SI base unit equivalent: 1/360000 m... | Concept | stable |
centimetre per second | cm.s-1 | SI derived unit of speed; SI base unit equivalent: 0.01 m.s-1 | Concept | stable |
square centimetre | cm2 | SI derived unit of area; SI base unit equivalent: 1E-4 m2 | Concept | stable |
cubic centimetre per cubic metre | cm3.m-3 | SI derived unit of volumetric mixing ratio, equivalent to ppm... | Concept | stable |
day | d | Unit of time, accepted for use with SI: 1 d = 86400 s | Concept | stable |
decibel | dB | Unit of sound intensity, accepted for use with SI | Concept | stable |
decibel per degree (angle) | dB.deg-1 | Unit of angular gradient of sound intensity | Concept | stable |
decibel per metre | dB.m-1 | Unit of spatial gradient of sound intensity | Concept | stable |
decipascal per second (microbar per second) | dPa.s-1 | SI derived unit of time derivative of pressure, pressure tend... | Concept | stable |
dekapascal | daPa | SI derived unit of pressure/stress; SI base unit equivalent: ... | Concept | stable |
degree (angle) | deg | Unit of plane or phase angle, accepted for use with SI: 1 deg... | Concept | stable |
degree (angle) per second | deg.s-1 | Unit of angular speed, accepted for use with SI | Concept | stable |
square degree (angle) | deg2 | Unit of square of phase or plane angle, accepted for use with... | Concept | stable |
degree Celsius (°C) | degC | SI derived unit of temperature, as defined by ITS-90; SI base... | Concept | stable |
degree Celsius per 100 metres | degC.hm-1 | SI derived unit of spatial gradient of temperature per 100 me... | Concept | stable |
degree Celsius per metre | degC.m-1 | SI derived unit of spatial gradient of temperature per metre;... | Concept | stable |
decimetre | dm | SI prefixed unit of length; SI base unit equivalent: 0.1 m | Concept | stable |
electron volt | eV | Unit of energy, accepted for use with SI; SI base unit equiva... | Concept | stable |
foot | ft | Imperial/US unit of length, equal to 1200/3937 metre or 0.304... | Concept | stable |
gram per cubic centimetre | g.cm-3 | SI derived unit of density, equivalent to kilograms per litre... | Concept | stable |
gram per kilogram | g.kg-1 | SI derived unit of mass fraction, dimensionless; SI base unit... | Concept | stable |
gram per kilogram per second | g.kg-1.s-1 | SI derived unit of time derivative of mass fraction; SI base ... | Concept | stable |
standard acceleration due to gravity | g0 | Conventional unit of gravity acceleration; g0 = 9.80665 m.s-2 | Concept | stable |
geopotential metre | gpm | The height of a given point in the atmosphere in units propor... | Concept | stable |
hour | h | Unit of time, accepted for use with SI: 1 h = 3600 s | Concept | stable |
hectopascal | hPa | SI derived unit of pressure/stress; SI base unit equivalent: ... | Concept | stable |
hectopascal per 3 hours | hPa.(3h)-1 | SI derived unit of time derivative of pressure; SI base unit ... | Concept | stable |
hectopascal per hour | hPa.h-1 | SI derived unit of time derivative of pressure; SI base unit ... | Concept | stable |
hectopascal per second | hPa.s-1 | SI derived unit of time derivative of pressure; SI base unit ... | Concept | stable |
hectare | ha | Unit of area, accepted for use with SI: 1 ha = 1E4 m2 | Concept | stable |
inch | in | Imperial/US unit of length, equal to 25.4 millimetres | Concept | stable |
inapplicable | inapplicable | There is no value (categorical data) | Concept | stable |
kilohertz | kHz | SI derived unit of frequency; SI base unit equivalent: 1000 s... | Concept | stable |
kilopascal | kPa | SI derived unit of pressure/stress, equal to 1000 Pa; SI base... | Concept | stable |
kilocalory per square centimetre | kcal.cm-2 | Unit of radiant exposure, equal to 4.184E7 J.m-2 | Concept | stable |
kilogram | kg | SI base unit of mass | Concept | stable |
per square kilogram per second | kg-2.s-1 | SI derived unit of quantity with dimension of M-2.T-1 | Concept | stable |
kilogram per kilogram | kg.kg-1 | SI derived unit of mass fraction; SI base unit equivalent: 1 | Concept | stable |
kilogram per kilogram per second | kg.kg-1.s-1 | SI derived unit of time derivative of mass fraction; SI base ... | Concept | stable |
kilogram per metre | kg.m-1 | SI derived unit of linear mass density or quantity with dimen... | Concept | stable |
kilogram per square metre | kg.m-2 | SI derived unit of area density | Concept | stable |
kilogram per square metre per second | kg.m-2.s-1 | SI derived unit of time derivative of mass area density | Concept | stable |
kilogram per cubic metre | kg.m-3 | SI derived unit of density, mass density | Concept | stable |
kilometre | km | SI prefixed unit of length; SI base unit equivalent: 1000 m | Concept | stable |
per kilometre | km-1 | SI derived unit of quantity with dimension of reciprocal leng... | Concept | stable |
per kilometre per steradian | km-1.sr-1 | SI derived unit of the scattering coefficient at a given dire... | Concept | stable |
kilometre per day | km.d-1 | SI derived unit of speed; SI base unit equivalent: 1000/86400... | Concept | stable |
kilometre per hour | km.h-1 | SI derived unit of speed; SI base unit equivalent: 1000/3600 ... | Concept | stable |
knot | kt | Conventional unit of speed, equal to 1 nmi/h; SI base unit eq... | Concept | stable |
knot per 1000 metres | kt.km-1 | Conventional unit of spatial gradient of speed; SI base unit ... | Concept | stable |
litre | l | SI derived unit of volume; SI base unit equivalent: 0.001 m3 | Concept | stable |
lumen | lm | SI derived unit of luminous flux; SI base unit equivalent: 1 ... | Concept | stable |
lux | lx | SI derived unit of illuminance; SI base unit equivalent: cd.m... | Concept | stable |
metre | m | SI base unit of length | Concept | stable |
metre to the two thirds power per second | m(2.3-1).s-1 | SI derived unit of the quantity with dimension of L^(2/3) T-1 | Concept | stable |
per metre | m-1 | SI derived unit of quantity with dimension of reciprocal leng... | Concept | stable |
per metre per steradian | m-1.sr-1 | SI derived unit of the scattering coefficient at a given dire... | Concept | stable |
per cubic metre | m-3 | SI derived unit of specific volume | Concept | stable |
metre per year | m.a-1 | Conventional unit of velocity | Concept | stable |
metre per second | m.s-1 | SI derived unit of speed | Concept | stable |
metre per second per 1000 metres | m.s-1.km-1 | SI derived unit of spatial gradient of speed; SI base unit eq... | Concept | stable |
metre per second per metre | m.s-1.m-1 | SI derived unit of spatial gradient of speed | Concept | stable |
metre per second squared | m.s-2 | SI derived unit of acceleration | Concept | stable |
square metre | m2 | SI derived unit of area | Concept | stable |
square metre second | m2.s | SI derived unit of sea surface wave variance spectral density | Concept | stable |
square metre per second | m2.s-1 | SI derived unit of kinematic viscosity, thermal diffusivity, ... | Concept | stable |
square metre per square second | m2.s-2 | SI derived quantity with dimension of squared speed | Concept | stable |
square metre second per radian | m2.s.rad-1 | SI derived unit of sea surface wave directional variance spec... | Concept | stable |
cubic metres | m3 | SI derived unit of volume | Concept | stable |
cubic metre per cubic metre | m3.m-3 | SI derived unit of volume fraction; SI base unit equivalent: ... | Concept | stable |
cubic metre per second | m3.s-1 | SI derived unit of volume flow rate or time derivative of vol... | Concept | stable |
metre to the fourth power | m4 | SI derived unit of the second moment of area, area moment of ... | Concept | stable |
millibecquerel per cubic metre | mBq.m-3 | SI derived unit of volumetric radioactivity concentration; SI... | Concept | stable |
milligal | mGal | CGS unit of acceleration, equal to one thousandth of a Gal (1... | Concept | stable |
millisievert | mSv | SI derived unit of equivalent dose (of ionizing radiation); S... | Concept | stable |
millivolt | mV | SI derived unit of voltage, electrical potential difference, ... | Concept | stable |
millibar | mbar | Conventional unit of pressure, equal to 1 hPa; SI base unit e... | Concept | stable |
milligram per cubic centimetre | mg.cm-3 | SI derived unit of mass concentration; SI base unit equivalen... | Concept | stable |
milligram per kilogram | mg.kg-1 | SI derived unit of mass fraction, equivalent to ppmm (parts p... | Concept | stable |
milligram per litre | mg.l-1 | SI derived unit of density or mass concentration; SI base uni... | Concept | stable |
milligram per cubic metre | mg.m-3 | SI derived unit of density or mass concentration; SI base uni... | Concept | stable |
milligrams per cubic metre at 25 degrees | mg_m-3_25C | Concept | stable | |
minute (time) | min | Unit of time, accepted for use with SI: 1 min = 60 s | Concept | stable |
missing | missing | The correct value is not readily available to the sender of t... | Concept | stable |
millimetre | mm | SI prefixed unit of length; SI base unit equivalent: 0.001 m | Concept | stable |
millimetre per hour | mm.h-1 | SI derived unit of speed; SI base unit equivalent: 1/3.6E6 m.... | Concept | stable |
millimetre per second | mm.s-1 | SI derived unit of speed; SI base unit equivalent: 0.001 m.s-... | Concept | stable |
cubic millimetre per cubic metre | mm3.m-3 | SI derived unit of volumetric mixing ratio, equivalent to ppb... | Concept | stable |
millimetre to the sixth power per cubic metre | mm6.m-3 | SI derived unit of quantity with dimension of L3; SI base uni... | Concept | stable |
millimetre of mercury | mmHg | Conventional unit of pressure, equal to 133.322387415 Pa | Concept | stable |
millimole per mole | mmol.mol-1 | SI derived unit equivalent to expressing mole fraction in par... | Concept | stable |
mole | mol | SI base unit of amount of substance | Concept | stable |
mole per mole | mol.mol-1 | SI derived unit of mole fraction; SI base unit equivalent: 1 | Concept | stable |
month | mon | Conventional unit of time duration of between 28-31 days wher... | Concept | stable |
nanobar | nbar | Conventional unit of pressure; SI base unit equivalent: 1E-4 ... | Concept | stable |
nanogram per kilogram | ng.kg-1 | SI derived unit of mass fraction, equivalent to pptm (parts p... | Concept | stable |
nanogram per cubic metre | ng.m-3 | SI derived unit of mass concentration; SI base unit equivalen... | Concept | stable |
nanometre | nm | SI prefixed unit of length; SI base unit equivalent: 1E-9 m | Concept | stable |
nautical mile | nmi | Conventional unit of length; SI base unit equivalent: 1852 m | Concept | stable |
nanomole per mole | nmol.mol-1 | SI derived unit of mole fraction; SI base unit equivalent: 1E... | Concept | stable |
eights of sky covered by cloud | okta | Unit of cloud amount, expressed as number of eighths of the s... | Concept | stable |
pH unit | pH_unit | Negative decimal logarithm of the hydrogen ion activity ('eff... | Concept | stable |
parsec | pc | Astronomical unit of length, 1 pc = 64800/Π AU | Concept | stable |
per cent | percent | Dimensionless number, expressed as a fraction of 100; SI base... | Concept | stable |
per mille | permil | Dimensionless number, expressed as a fraction of 1000; SI bas... | Concept | stable |
picomole per mole | pmol.mol-1 | SI derived unit equivalent of mole fraction; SI base unit equ... | Concept | stable |
parts per billion by volume | ppbv | Unit of volume fraction, equivalent to SI derived unit: 1E-9 | Concept | stable |
parts per million by volume | ppmv | Unit of volume fraction, equivalent to SI derived unit: 1E-6 | Concept | stable |
parts per trillion by volume | pptv | Unit of volume fraction, equivalent to SI derived unit: 1E-12 | Concept | stable |
practical salinity unit | psu | Conventional unit, equivalent to per mille; SI based unit equ... | Concept | stable |
radian | rad | SI derived unit of plane angle; SI base unit equivalent: 1 | Concept | stable |
radian per metre | rad.m-1 | SI derived unit of spatial gradient of plane angle | Concept | stable |
radian per second | rad.s-1 | SI derived unit of angular velocity; SI base unit equivalent:... | Concept | stable |
second | s | SI base unit of time | Concept | stable |
per second squared | s-2 | SI derived unit of second order time derivative | Concept | stable |
second per metre | s.m-1 | SI derived unit of quantity with dimension of T.L-1 | Concept | stable |
steradian | sr | SI derived unit of solid angle; SI base unit equivalent: 1 | Concept | stable |
tonne | t | Unit of mass, accepted for use with SI; SI base unit equivale... | Concept | stable |
(metric) ton per hectare | t.ha-1 | Unit of area density, equal to 0.1 kg.m-2 | Concept | stable |
unified atomic mass unit | u | Conventional unit of mass; 1 u = 1 Da (Dalton) = 1.6605390666... | Concept | stable |
microsiemens per centimetre | uS.cm-1 | SI derived unit of spatial gradient of electrical conductance... | Concept | stable |
microgram per kilogram | ug.kg-1 | SI derived unit of mass fraction, equivalent to ppbm (parts p... | Concept | stable |
microgram per litre | ug.l-1 | SI derived unit of mass concentration; SI base unit equivalen... | Concept | stable |
microgram per cubic metre | ug.m-3 | SI derived unit of mass concentration; SI base unit equivalen... | Concept | stable |
micrometre | um | SI prefixed unit of length; SI base unit equivalent: 1E-6 m | Concept | stable |
cubic micrometre per cubic centimetre | um3.cm-3 | SI derived unit of volume fraction, equivalent to pptv (parts... | Concept | stable |
micromole per kilogram | umol.kg-1 | SI derived unit of amount per unit mass; SI base unit equival... | Concept | stable |
micromole per litre | umol.l-1 | SI derived unit of amount concentration; SI base unit equival... | Concept | stable |
micromole per mole | umol.mol-1 | SI derived unit of mole fraction; SI base unit equivalent: 1E... | Concept | stable |
unknown | unknown | The correct value is not known to, and not computable by, the... | Concept | stable |
week | week | Conventional unit of time, equivalent to 604800 s | Concept | stable |