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 duration, ranging from 365 days to ...
|
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
|
millisiemens per centimetre
|
mS.cm-1 |
SI derived unit of spatial gradient of electrical conductance...
|
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
|