' |
minute (angle)
|
Unit of plane or phase angle, accepted for use with SI: 1 ' =...
|
stable
|
'' |
second (angle)
|
Unit of plane or phase angle, accepted for use with SI: 1 '' ...
|
stable
|
1 |
dimensionless
|
Dimensionless; SI base unit equivalent: 1
|
stable
|
A |
ampere
|
SI base unit of electric current
|
stable
|
AU |
astronomical unit
|
Unit of length, accepted for use with SI: 1 AU = 149597870700...
|
stable
|
Bq |
becquerel
|
SI derived unit of radioactivity; SI base unit equivalent: s-...
|
stable
|
Bq.l-1 |
becquerel per litre
|
Unit of radioactivity concentration; SI base unit equivalent:...
|
stable
|
Bq.m-2 |
becquerel per square metre
|
SI derived unit of radioactivity area concentration; SI base ...
|
stable
|
Bq.m-3 |
becquerel per cubic metre
|
SI derived unit of radioactivity concentration; SI base unit ...
|
stable
|
Bq.s.m-3 |
becquerel second per cubic metre
|
SI derived unit of time integrated radioactivity concentratio...
|
stable
|
C |
coulomb
|
SI derived unit of electric charge; SI base unit equivalent: ...
|
stable
|
CFU.ml-1 |
colony-forming unit per millilitre
|
Unit of number concentration of viable bacteria or fungal cel...
|
stable
|
DU |
Dobson Unit
|
Unit of column abundance of molecules in the atmosphere. 1 DU...
|
stable
|
E |
Eötvös
|
Unit of acceleration divided by distance,1 E = 1E-9 Gal/cm; S...
|
stable
|
F |
farad
|
SI derived unit of electrical capacitance; SI base unit equiv...
|
stable
|
GHz |
gigahertz
|
SI derived unit of frequency; SI base unit equivalent: 1E9 s-...
|
stable
|
Gy |
gray
|
SI derived unit of absorbed dose (of ionizing radiation); SI ...
|
stable
|
H |
henry
|
SI derived unit of electrical inductance; SI base unit equiva...
|
stable
|
HU |
Hazen unit
|
Unit of color according to the Platinum/Cobalt or Apha-Hazen ...
|
stable
|
Hz |
hertz
|
SI derived unit of frequency; SI base unit equivalent: s-1
|
stable
|
J |
joule
|
SI derived unit of energy, work, heat; SI base unit equivalen...
|
stable
|
J.kg-1 |
joule per kilogram
|
SI derived unit of specific energy or specific potential enth...
|
stable
|
J.m-2 |
joule per square metre
|
SI derived unit of radiant exposure; SI base unit equivalent:...
|
stable
|
K |
kelvin
|
SI base unit of thermodynamic temperature
|
stable
|
K.m-1 |
kelvin per metre
|
SI derived unit of spatial gradient of temperature
|
stable
|
K.m.s-1 |
kelvin metre per second
|
SI derived unit of covariance of wind speed and temperature o...
|
stable
|
K.m2.kg-1.s-1 |
kelvin square metre per kilogram per second
|
SI derived unit of potential vorticity
|
stable
|
MHz |
megahertz
|
SI derived unit of frequency; SI base unit equivalent: 1E6 s-...
|
stable
|
MPN.ml-1 |
most probable number index number in 1 millilitre
|
Unit of expected number concentration of bacteria in the orig...
|
stable
|
Mm-1 |
per megametre
|
Unit of quantity with dimension of reciprocal length, e.g., o...
|
stable
|
Mm-1.sr-1 |
per megametre per steradian
|
SI derived unit of the scattering coefficient at a given dire...
|
stable
|
N |
newton
|
SI derived unit of force, weight
|
stable
|
N.m-2 |
newton per square metre
|
SI derived unit of pressure or equivalent quantity
|
stable
|
NTU |
nephelometric turbidity unit
|
Units of turbidity from a calibrated nephelometer; SI base un...
|
stable
|
N_units |
N units
|
Unit of atmospheric refractivity, the refractivity, N, is rel...
|
stable
|
Ohm |
ohm
|
SI derived unit of electrical resistance, impedance, reactanc...
|
stable
|
Pa |
pascal
|
SI derived unit of pressure/stress; SI base unit equivalent: ...
|
stable
|
Pa.s-1 |
pascal per second
|
SI derived unit of temporal derivative of pressure/stress; SI...
|
stable
|
S |
siemens
|
SI derived unit of electrical conductance; SI base unit equiv...
|
stable
|
S.m-1 |
siemens per metre
|
SI derived unit of spatial gradient of electric conductance
|
stable
|
Sv |
sievert
|
SI derived unit of equivalent dose (of ionizing radiation); S...
|
stable
|
T |
tesla
|
SI derived unit of magnetic induction, magnetic flux density;...
|
stable
|
THz |
terahertz
|
SI derived unit of frequency; SI base unit equivalent: 1E12 s...
|
stable
|
V |
volt
|
SI derived unit of voltage, electrical potential difference, ...
|
stable
|
W |
watt
|
SI derived unit of power, radiant flux; SI base unit equivale...
|
stable
|
W.m-1.sr-1 |
watt per metre per steradian
|
SI derived unit of spectral intensity, a directional quantity...
|
stable
|
W.m-2 |
watt per square metre
|
SI derived unit of heat flux density or irradiance; SI base u...
|
stable
|
W.m-2.sr-1 |
watt per square metre per steradian
|
SI derived unit of radiance; SI base unit equivalent: kg.s-3
|
stable
|
W.m-2.sr-1.Hz-1 |
watt per square metre per steradian per hertz
|
SI derived unit of spectral radiance per unit frequency; SI b...
|
stable
|
W.m-2.sr-1.cm |
watt per square metre per steradian per inverse centimetre
|
SI derived unit of spectral radiance per unit wavenumber, wav...
|
stable
|
W.m-2.sr-1.m |
watt per square metre per steradian per inverse metre
|
SI derived unit of spectral radiance per inverse metre; SI ba...
|
stable
|
W.m-3.sr-1 |
watt per square metre per steradian per metre
|
SI derived unit of spectral radiance per unit wavelength; SI ...
|
stable
|
Wb |
Weber
|
SI derived unit of magnetic flux; SI base unit equivalent: kg...
|
stable
|
a |
year
|
Conventional unit of time duration, ranging from 365 days to ...
|
stable
|
cb.(12h)-1 |
centibar per 12 hours
|
Conventional unit of time derivative of pressure, pressure te...
|
stable
|
cb.s-1 |
centibar per second
|
Conventional unit of time derivative of pressure, pressure te...
|
stable
|
cd |
candela
|
SI base unit of luminous intensity
|
stable
|
cm |
centimetre
|
SI prefixed unit of length; SI base unit equivalent: 0.01 m
|
stable
|
cm-3 |
per cubic centimetre
|
SI derived unit of specific volume; SI base unit equivalent: ...
|
stable
|
cm.h-1 |
centimetre per hour
|
SI derived unit of speed; SI base unit equivalent: 1/360000 m...
|
stable
|
cm.s-1 |
centimetre per second
|
SI derived unit of speed; SI base unit equivalent: 0.01 m.s-1
|
stable
|
cm2 |
square centimetre
|
SI derived unit of area; SI base unit equivalent: 1E-4 m2
|
stable
|
cm3.m-3 |
cubic centimetre per cubic metre
|
SI derived unit of volumetric mixing ratio, equivalent to ppm...
|
stable
|
d |
day
|
Unit of time, accepted for use with SI: 1 d = 86400 s
|
stable
|
dB |
decibel
|
Unit of sound intensity, accepted for use with SI
|
stable
|
dB.deg-1 |
decibel per degree (angle)
|
Unit of angular gradient of sound intensity
|
stable
|
dB.m-1 |
decibel per metre
|
Unit of spatial gradient of sound intensity
|
stable
|
dPa.s-1 |
decipascal per second (microbar per second)
|
SI derived unit of time derivative of pressure, pressure tend...
|
stable
|
daPa |
dekapascal
|
SI derived unit of pressure/stress; SI base unit equivalent: ...
|
stable
|
deg |
degree (angle)
|
Unit of plane or phase angle, accepted for use with SI: 1 deg...
|
stable
|
deg.s-1 |
degree (angle) per second
|
Unit of angular speed, accepted for use with SI
|
stable
|
deg2 |
square degree (angle)
|
Unit of square of phase or plane angle, accepted for use with...
|
stable
|
degC |
degree Celsius (°C)
|
SI derived unit of temperature, as defined by ITS-90; SI base...
|
stable
|
degC.hm-1 |
degree Celsius per 100 metres
|
SI derived unit of spatial gradient of temperature per 100 me...
|
stable
|
degC.m-1 |
degree Celsius per metre
|
SI derived unit of spatial gradient of temperature per metre;...
|
stable
|
dm |
decimetre
|
SI prefixed unit of length; SI base unit equivalent: 0.1 m
|
stable
|
eV |
electron volt
|
Unit of energy, accepted for use with SI; SI base unit equiva...
|
stable
|
fmol.kg-1 |
femtomole per kilogram
|
SI derived unit of amount per unit mass; SI base unit equival...
|
stable
|
ft |
foot
|
Imperial/US unit of length, equal to 1200/3937 metre or 0.304...
|
stable
|
g.cm-3 |
gram per cubic centimetre
|
SI derived unit of density, equivalent to kilograms per litre...
|
stable
|
g.kg-1 |
gram per kilogram
|
SI derived unit of mass fraction, dimensionless; SI base unit...
|
stable
|
g.kg-1.s-1 |
gram per kilogram per second
|
SI derived unit of time derivative of mass fraction; SI base ...
|
stable
|
g0 |
standard acceleration due to gravity
|
Conventional unit of gravity acceleration; g0 = 9.80665 m.s-2
|
stable
|
gpm |
geopotential metre
|
The height of a given point in the atmosphere in units propor...
|
stable
|
h |
hour
|
Unit of time, accepted for use with SI: 1 h = 3600 s
|
stable
|
hPa |
hectopascal
|
SI derived unit of pressure/stress; SI base unit equivalent: ...
|
stable
|
hPa.(3h)-1 |
hectopascal per 3 hours
|
SI derived unit of time derivative of pressure; SI base unit ...
|
stable
|
hPa.h-1 |
hectopascal per hour
|
SI derived unit of time derivative of pressure; SI base unit ...
|
stable
|
hPa.s-1 |
hectopascal per second
|
SI derived unit of time derivative of pressure; SI base unit ...
|
stable
|
ha |
hectare
|
Unit of area, accepted for use with SI: 1 ha = 1E4 m2
|
stable
|
in |
inch
|
Imperial/US unit of length, equal to 25.4 millimetres
|
stable
|
inapplicable |
inapplicable
|
There is no value (categorical data)
|
stable
|
kHz |
kilohertz
|
SI derived unit of frequency; SI base unit equivalent: 1000 s...
|
stable
|
kPa |
kilopascal
|
SI derived unit of pressure/stress, equal to 1000 Pa; SI base...
|
stable
|
kcal.cm-2 |
kilocalory per square centimetre
|
Unit of radiant exposure, equal to 4.184E7 J.m-2
|
stable
|
kg |
kilogram
|
SI base unit of mass
|
stable
|
kg-2.s-1 |
per square kilogram per second
|
SI derived unit of quantity with dimension of M-2.T-1
|
stable
|
kg.kg-1 |
kilogram per kilogram
|
SI derived unit of mass fraction; SI base unit equivalent: 1
|
stable
|
kg.kg-1.s-1 |
kilogram per kilogram per second
|
SI derived unit of time derivative of mass fraction; SI base ...
|
stable
|
kg.m-1 |
kilogram per metre
|
SI derived unit of linear mass density or quantity with dimen...
|
stable
|
kg.m-2 |
kilogram per square metre
|
SI derived unit of area density
|
stable
|
kg.m-2.s-1 |
kilogram per square metre per second
|
SI derived unit of time derivative of mass area density
|
stable
|
kg.m-3 |
kilogram per cubic metre
|
SI derived unit of density, mass density
|
stable
|
km |
kilometre
|
SI prefixed unit of length; SI base unit equivalent: 1000 m
|
stable
|
km-1 |
per kilometre
|
SI derived unit of quantity with dimension of reciprocal leng...
|
stable
|
km-1.sr-1 |
per kilometre per steradian
|
SI derived unit of the scattering coefficient at a given dire...
|
stable
|
km.d-1 |
kilometre per day
|
SI derived unit of speed; SI base unit equivalent: 1000/86400...
|
stable
|
km.h-1 |
kilometre per hour
|
SI derived unit of speed; SI base unit equivalent: 1000/3600 ...
|
stable
|
kt |
knot
|
Conventional unit of speed, equal to 1 nmi/h; SI base unit eq...
|
stable
|
kt.km-1 |
knot per 1000 metres
|
Conventional unit of spatial gradient of speed; SI base unit ...
|
stable
|
l |
litre
|
SI derived unit of volume; SI base unit equivalent: 0.001 m3
|
stable
|
lm |
lumen
|
SI derived unit of luminous flux; SI base unit equivalent: 1 ...
|
stable
|
lx |
lux
|
SI derived unit of illuminance; SI base unit equivalent: cd.m...
|
stable
|
m |
metre
|
SI base unit of length
|
stable
|
m(2.3-1).s-1 |
metre to the two thirds power per second
|
SI derived unit of the quantity with dimension of L^(2/3) T-1
|
stable
|
m-1 |
per metre
|
SI derived unit of quantity with dimension of reciprocal leng...
|
stable
|
m-1.sr-1 |
per metre per steradian
|
SI derived unit of the scattering coefficient at a given dire...
|
stable
|
m-3 |
per cubic metre
|
SI derived unit of specific volume
|
stable
|
m.a-1 |
metre per year
|
Conventional unit of velocity
|
stable
|
m.s-1 |
metre per second
|
SI derived unit of speed
|
stable
|
m.s-1.km-1 |
metre per second per 1000 metres
|
SI derived unit of spatial gradient of speed; SI base unit eq...
|
stable
|
m.s-1.m-1 |
metre per second per metre
|
SI derived unit of spatial gradient of speed
|
stable
|
m.s-2 |
metre per second squared
|
SI derived unit of acceleration
|
stable
|
m2 |
square metre
|
SI derived unit of area
|
stable
|
m2.s |
square metre second
|
SI derived unit of sea surface wave variance spectral density
|
stable
|
m2.s-1 |
square metre per second
|
SI derived unit of kinematic viscosity, thermal diffusivity, ...
|
stable
|
m2.s-2 |
square metre per square second
|
SI derived quantity with dimension of squared speed
|
stable
|
m2.s.rad-1 |
square metre second per radian
|
SI derived unit of sea surface wave directional variance spec...
|
stable
|
m3 |
cubic metres
|
SI derived unit of volume
|
stable
|
m3.m-3 |
cubic metre per cubic metre
|
SI derived unit of volume fraction; SI base unit equivalent: ...
|
stable
|
m3.s-1 |
cubic metre per second
|
SI derived unit of volume flow rate or time derivative of vol...
|
stable
|
m4 |
metre to the fourth power
|
SI derived unit of the second moment of area, area moment of ...
|
stable
|
mBq.m-3 |
millibecquerel per cubic metre
|
SI derived unit of volumetric radioactivity concentration; SI...
|
stable
|
mGal |
milligal
|
CGS unit of acceleration, equal to one thousandth of a Gal (1...
|
stable
|
mS.cm-1 |
millisiemens per centimetre
|
SI derived unit of spatial gradient of electrical conductance...
|
stable
|
mSv |
millisievert
|
SI derived unit of equivalent dose (of ionizing radiation); S...
|
stable
|
mV |
millivolt
|
SI derived unit of voltage, electrical potential difference, ...
|
stable
|
mbar |
millibar
|
Conventional unit of pressure, equal to 1 hPa; SI base unit e...
|
stable
|
mg.cm-3 |
milligram per cubic centimetre
|
SI derived unit of mass concentration; SI base unit equivalen...
|
stable
|
mg.kg-1 |
milligram per kilogram
|
SI derived unit of mass fraction, equivalent to ppmm (parts p...
|
stable
|
mg.l-1 |
milligram per litre
|
SI derived unit of density or mass concentration; SI base uni...
|
stable
|
mg.m-3 |
milligram per cubic metre
|
SI derived unit of density or mass concentration; SI base uni...
|
stable
|
min |
minute (time)
|
Unit of time, accepted for use with SI: 1 min = 60 s
|
stable
|
missing |
missing
|
The correct value is not readily available to the sender of t...
|
stable
|
mm |
millimetre
|
SI prefixed unit of length; SI base unit equivalent: 0.001 m
|
stable
|
mm.h-1 |
millimetre per hour
|
SI derived unit of speed; SI base unit equivalent: 1/3.6E6 m....
|
stable
|
mm.s-1 |
millimetre per second
|
SI derived unit of speed; SI base unit equivalent: 0.001 m.s-...
|
stable
|
mm3.m-3 |
cubic millimetre per cubic metre
|
SI derived unit of volumetric mixing ratio, equivalent to ppb...
|
stable
|
mm6.m-3 |
millimetre to the sixth power per cubic metre
|
SI derived unit of quantity with dimension of L3; SI base uni...
|
stable
|
mmHg |
millimetre of mercury
|
Conventional unit of pressure, equal to 133.322387415 Pa
|
stable
|
mmol.mol-1 |
millimole per mole
|
SI derived unit equivalent to expressing mole fraction in par...
|
stable
|
mol |
mole
|
SI base unit of amount of substance
|
stable
|
mol.mol-1 |
mole per mole
|
SI derived unit of mole fraction; SI base unit equivalent: 1
|
stable
|
mon |
month
|
Conventional unit of time duration of between 28-31 days wher...
|
stable
|
nbar |
nanobar
|
Conventional unit of pressure; SI base unit equivalent: 1E-4 ...
|
stable
|
ng.kg-1 |
nanogram per kilogram
|
SI derived unit of mass fraction, equivalent to pptm (parts p...
|
stable
|
ng.m-3 |
nanogram per cubic metre
|
SI derived unit of mass concentration; SI base unit equivalen...
|
stable
|
nm |
nanometre
|
SI prefixed unit of length; SI base unit equivalent: 1E-9 m
|
stable
|
nmi |
nautical mile
|
Conventional unit of length; SI base unit equivalent: 1852 m
|
stable
|
nmol.kg-1 |
nanomole per kilogram
|
SI derived unit of amount per unit mass; SI base unit equival...
|
stable
|
nmol.mol-1 |
nanomole per mole
|
SI derived unit of mole fraction; SI base unit equivalent: 1E...
|
stable
|
okta |
eights of sky covered by cloud
|
Unit of cloud amount, expressed as number of eighths of the s...
|
stable
|
pH_unit |
pH unit
|
Negative decimal logarithm of the hydrogen ion activity ('eff...
|
stable
|
pc |
parsec
|
Astronomical unit of length, 1 pc = 64800/Π AU
|
stable
|
percent |
per cent
|
Dimensionless number, expressed as a fraction of 100; SI base...
|
stable
|
permeg |
per meg
|
Dimensionless number, expressed as a fraction of 1000000; SI ...
|
stable
|
permil |
per mille
|
Dimensionless number, expressed as a fraction of 1000; SI bas...
|
stable
|
pmol.kg-1 |
picomole per kilogram
|
SI derived unit of amount per unit mass; SI base unit equival...
|
stable
|
pmol.mol-1 |
picomole per mole
|
SI derived unit equivalent of mole fraction; SI base unit equ...
|
stable
|
ppbv |
parts per billion by volume
|
Unit of volume fraction, equivalent to SI derived unit: 1E-9
|
stable
|
ppmv |
parts per million by volume
|
Unit of volume fraction, equivalent to SI derived unit: 1E-6
|
stable
|
pptv |
parts per trillion by volume
|
Unit of volume fraction, equivalent to SI derived unit: 1E-12
|
stable
|
psu |
practical salinity unit
|
Conventional unit, equivalent to per mille; SI based unit equ...
|
stable
|
rad |
radian
|
SI derived unit of plane angle; SI base unit equivalent: 1
|
stable
|
rad.m-1 |
radian per metre
|
SI derived unit of spatial gradient of plane angle
|
stable
|
rad.s-1 |
radian per second
|
SI derived unit of angular velocity; SI base unit equivalent:...
|
stable
|
s |
second
|
SI base unit of time
|
stable
|
s-2 |
per second squared
|
SI derived unit of second order time derivative
|
stable
|
s.m-1 |
second per metre
|
SI derived unit of quantity with dimension of T.L-1
|
stable
|
sr |
steradian
|
SI derived unit of solid angle; SI base unit equivalent: 1
|
stable
|
t |
tonne
|
Unit of mass, accepted for use with SI; SI base unit equivale...
|
stable
|
t.ha-1 |
(metric) ton per hectare
|
Unit of area density, equal to 0.1 kg.m-2
|
stable
|
u |
unified atomic mass unit
|
Conventional unit of mass; 1 u = 1 Da (Dalton) = 1.6605390666...
|
stable
|
uS.cm-1 |
microsiemens per centimetre
|
SI derived unit of spatial gradient of electrical conductance...
|
stable
|
ug.kg-1 |
microgram per kilogram
|
SI derived unit of mass fraction, equivalent to ppbm (parts p...
|
stable
|
ug.l-1 |
microgram per litre
|
SI derived unit of mass concentration; SI base unit equivalen...
|
stable
|
ug.m-3 |
microgram per cubic metre
|
SI derived unit of mass concentration; SI base unit equivalen...
|
stable
|
um |
micrometre
|
SI prefixed unit of length; SI base unit equivalent: 1E-6 m
|
stable
|
um3.cm-3 |
cubic micrometre per cubic centimetre
|
SI derived unit of volume fraction, equivalent to pptv (parts...
|
stable
|
umol.kg-1 |
micromole per kilogram
|
SI derived unit of amount per unit mass; SI base unit equival...
|
stable
|
umol.l-1 |
micromole per litre
|
SI derived unit of amount concentration; SI base unit equival...
|
stable
|
umol.mol-1 |
micromole per mole
|
SI derived unit of mole fraction; SI base unit equivalent: 1E...
|
stable
|
unknown |
unknown
|
The correct value is not known to, and not computable by, the...
|
stable
|
week |
week
|
Conventional unit of time, equivalent to 604800 s
|
stable
|