Conventional unit of length; SI base unit equivalent: 1852 m nautical mile nmi degrees true degrees_true Conventional unit of time derivative of pressure, pressure tendency; SI base unit: 10/432 kg.m-1.s-3 centibar per 12 hours cb.(12h)-1 Unit of spatial gradient of sound intensity decibel per metre dB.m-1 Dimensionless number, expressed as a fraction of 1000; SI base unit equivalent: 0.001 per mille permil SI derived unit of density or mass concentration; SI base unit equivalent: 0.001 kg.m-3 milligram per litre mg.l-1 square metres per second m2_s-1 micromoles per mole umol_mol-1 cubic metres per cubic metre m3_m-3 SI derived unit of the scattering coefficient at a given direction; SI base unit equivalent: 1E-6 m-1 per megametre per steradian Mm-1.sr-1 SI derived unit of speed; SI base unit equivalent: 1000/86400 m.s-1 kilometre per day km.d-1 Negative decimal logarithm of the hydrogen ion activity ('effective' concentration) specified in moles per litre; SI base unit equivalent: 0.001 m-3 pH unit pH_unit newtons per square metre N_m-2 microgram N per cubic metre ug_N_m-3 per square kilogram per second kg-2_s-1 SI derived unit of speed; SI base unit equivalent: 1000/3600 m.s-1 kilometre per hour km.h-1 SI derived unit of plane angle; SI base unit equivalent: 1 radian rad 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 milligram per kilogram mg.kg-1 metres per second per 1000 metres m_s-1_km-1 SI derived unit of magnetic flux; SI base unit equivalent: kg.m2.s-2.A-1 Weber Wb milligram N per litre mg_N_l-1 Unit of energy, accepted for use with SI; SI base unit equivalent: 1.602176634E19 kg m2 s-2 electron volt eV 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 nanogram per kilogram ng.kg-1 SI derived unit of power, radiant flux; SI base unit equivalent: kg.m2.s-3 watt W SI derived unit of mass fraction; SI base unit equivalent: 1 kilogram per kilogram kg.kg-1 SI derived unit of radiant exposure; SI base unit equivalent: m2.kg.s-2 joule per square metre J.m-2 Dimensionless; SI base unit equivalent: 1 dimensionless 1 CGS unit of acceleration, equal to one thousandth of a Gal (1 Gal = 0.01 m.s-2) milligal mGal SI derived unit of frequency; SI base unit equivalent: 1E6 s-1 megahertz MHz SI derived unit of quantity with dimension of L3; SI base unit equivalent: 1E-18 m3 millimetre to the sixth power per cubic metre mm6.m-3 SI derived unit of acceleration metre per second squared m.s-2 SI derived unit of electrical inductance; SI base unit equivalent: kg.m2.s-2.A-2 henry H Dimensionless number, expressed as a fraction of 100; SI base unit equivalent: 0.01 per cent percent nanograms per cubic metre ng_m-3 Conventional unit of time duration of between 28-31 days whereby 12 months amount to one year month mon joules per kilogram J_kg-1 SI derived unit of sea surface wave directional variance spectral density square metre second per radian m2.s.rad-1 Conventional unit of speed, equal to 1 nmi/h; SI base unit equivalent: (1852/3600)m.s-1 knot kt SI derived unit of speed; SI base unit equivalent: 0.001 m.s-1 millimetre per second mm.s-1 becquerel seconds per cubic metre Bq_s_m-3 milligrams per cubic metre at 25 degrees mg_m-3_25C Unit of volume fraction, equivalent to SI derived unit: 1E-6 parts per million by volume ppmv SI derived unit of kinematic viscosity, thermal diffusivity, diffusion coefficient square metre per second m2.s-1 becquerels per litre Bq_l-1 Conventional unit of time duration, ranging from 365 days to 366 days year a SI derived unit of quantity with dimension of reciprocal length, e.g., optical attenuation coefficients; SI base unit equivalent: 0.001 m-1 per kilometre km-1 SI derived unit of spectral radiance per unit wavelength; SI base unit equivalent: kg.m-1.s-3 watt per square metre per steradian per metre W.m-3.sr-1 SI derived unit of speed; SI base unit equivalent: 0.01 m.s-1 centimetre per second cm.s-1 SI derived unit of illuminance; SI base unit equivalent: cd.m-2 lux lx SI derived unit of time derivative of mass fraction; SI base unit equivalent: 0.001 s-1 gram per kilogram per second g.kg-1.s-1 Unit of plane or phase angle, accepted for use with SI: 1 ' = (pi/10800) rad minute (angle) ' Unit of acceleration divided by distance,1 E = 1E-9 Gal/cm; SI base unit equivalent: 1E-9 s-2 Eötvös E Unit of angular gradient of sound intensity decibel per degree (angle) dB.deg-1 SI base unit of time second s 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 microgram per kilogram ug.kg-1 SI derived unit of volume cubic metres m3 siemens per metre S_m-1 SI derived unit of amount per unit mass; SI base unit equivalent: 1E-6 mol.kg-1 micromole per kilogram umol.kg-1 Astronomical unit of length, 1 pc = 64800/Π AU parsec pc hectopascals per hour hPa_h-1 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. Dobson Unit DU degrees Celsius per metre C_m-1 SI derived unit of linear mass density or quantity with dimension of M.L-1 kilogram per metre kg.m-1 SI derived unit of angular velocity; SI base unit equivalent: s-1 radian per second rad.s-1 Unit of angular speed, accepted for use with SI degree (angle) per second deg.s-1 SI derived unit of temperature, as defined by ITS-90; SI base unit equivalent: K, with t/degC = T/K + 273.15 degree Celsius (°C) degC SI derived unit of mole fraction; SI base unit equivalent: 1E-6 micromole per mole umol.mol-1 Conventional unit of pressure, equal to 133.322387415 Pa millimetre of mercury mmHg kilograms per square metre per second kg_m-2_s-1 SI derived unit of spectral intensity, a directional quantity; SI base unit equivalent: kg.m.s-3 watt per metre per steradian W.m-1.sr-1 SI derived unit of force, weight newton N SI derived unit of spectral radiance per inverse metre; SI base unit equivalent: kg.m.s-3 watt per square metre per steradian per inverse metre W.m-2.sr-1.m SI derived unit of spatial gradient of temperature kelvin per metre K.m-1 metres to the two thirds power per second m(2_3)_s-1 SI derived unit of energy, work, heat; SI base unit equivalent: kg.m2.s-2 joule J Unit of radiant exposure, equal to 4.184E7 J.m-2 kilocalory per square centimetre kcal.cm-2 millimetres to the sixth power per cubic metre mm6_m-3 SI derived quantity with dimension of squared speed square metre per square second m2.s-2 SI derived unit of spatial gradient of speed metre per second per metre m.s-1.m-1 SI derived unit of electric charge; SI base unit equivalent: s.A coulomb C SI derived unit of mole fraction; SI base unit equivalent: 1 mole per mole mol.mol-1 Conventional unit of time, equivalent to 604800 s week week micrograms per cubic metre at 20 degrees ug_m-3_20C Dimensionless number, expressed as a fraction of 1000000; SI base unit equivalent: 0.000001; also referred as parts per million (ppm) per meg permeg The correct value is not known to, and not computable by, the sender of this data. However, a correct value probably exists. unknown unknown micromoles per litre umol_l-1 SI derived unit of specific energy or specific potential enthalpy; SI base unit equivalent: m2.kg.s-2.kg-1 joule per kilogram J.kg-1 SI derived unit of frequency; SI base unit equivalent: s-1 hertz Hz SI derived unit of luminous flux; SI base unit equivalent: 1 cd = 4π lm for a uniform source emitting in all directions. lumen lm SI derived unit of electrical resistance, impedance, reactance ohm Ohm grams per kilogram g_kg-1 SI derived unit of mass concentration; SI base unit equivalent: 1E-12 kg.m-3 nanogram per cubic metre ng.m-3 kelvin metres per second K_m_s-1 SI derived unit of speed; SI base unit equivalent: 1/360000 m.s-1 centimetre per hour cm.h-1 knots per 1000 metres kt_km-1 SI derived unit of density, mass density kilogram per cubic metre kg.m-3 grams per kilogram per second g_kg-1_s-1 SI base unit of thermodynamic temperature kelvin K moles per mole mol_mol-1 SI derived unit of heat flux density or irradiance; SI base unit equivalent: kg.s-3 watt per square metre W.m-2 millimoles per mole mmol_mol-1 (metric) ton per hectare t_ha-1 SI derived unit of pressure/stress; SI base unit equivalent: kg.m-1.s-2 pascal Pa Conventional unit of spatial gradient of speed; SI base unit equivalent: 1852/3600000 s-1 knot per 1000 metres kt.km-1 SI derived unit of mass concentration; SI base unit equivalent: 1E-9 kg.m-3 microgram per cubic metre ug.m-3 Imperial/US unit of length, equal to 1200/3937 metre or 0.3048 metre (approximately) foot ft SI derived unit of radioactivity area concentration; SI base unit equivalent: s-1.m-2 becquerel per square metre Bq.m-2 SI derived unit of volume flow rate or time derivative of volume cubic metre per second m3.s-1 Unit of quantity with dimension of reciprocal length, e.g., optical attenuation coefficients; SI base unit equivalent: 1E-6 m-1 per megametre Mm-1 SI derived unit of covariance of wind speed and temperature or the product of wind speed and temperature kelvin metre per second K.m.s-1 micromoles per kilogram umol_kg-1 millimetres per second mm_s-1 Unit of time, accepted for use with SI: 1 d = 86400 s day d SI derived unit of density or mass concentration; SI base unit equivalent: 1E-6 kg/m3 milligram per cubic metre mg.m-3 SI derived unit of volumetric radioactivity concentration; SI base unit equivalent: 0.001 s-1.m-3 millibecquerel per cubic metre mBq.m-3 SI derived unit of specific volume per cubic metre m-3 microgram S per cubic metre ug_S_m-3 Conventional unit of velocity metre per year m.a-1 SI derived unit of temporal derivative of pressure/stress; SI base unit equivalent: kg.m-1.s-3 pascal per second Pa.s-1 centibars per second cb_s-1 SI derived unit of second order time derivative per second squared s-2 Unit of number concentration of viable bacteria or fungal cells in a sample as a result of a plate count test colony-forming unit per millilitre CFU.ml-1 Unit of time, accepted for use with SI: 1 min = 60 s minute (time) min square metres per second squared m2_s-2 kilograms per metre kg_m-1 square metres second m2_s degrees Celsius per 100 metres C_(100m)-1 SI derived unit of the scattering coefficient at a given direction; SI base unit equivalent: 0.001 m-1 per kilometre per steradian km-1.sr-1 SI derived unit of amount concentration; SI base unit equivalent: 0.001 mol.m-3 micromole per litre umol.l-1 The correct value is not readily available to the sender of this data. Furthermore, a correct value may not exist missing missing Conventional unit of gravity acceleration; g0 = 9.80665 m.s-2 standard acceleration due to gravity g0 SI derived unit of volumetric mixing ratio, equivalent to ppmv (parts per million by volume); SI base unit equivalent: 1E-6 cubic centimetre per cubic metre cm3.m-3 SI derived unit of spectral radiance per unit frequency; SI base unit equivalent: kg.s-2 watt per square metre per steradian per hertz W.m-2.sr-1.Hz-1 centimetres per second cm_s-1 SI derived unit of area square metre m2 SI derived unit of absorbed dose (of ionizing radiation); SI base unit equivalent: m2.s-2 gray Gy SI derived unit of quantity with dimension of M-2.T-1 per square kilogram per second kg-2.s-1 SI derived unit of specific volume; SI base unit equivalent: 1E-6 m-3 per cubic centimetre cm-3 nautical mile nautical_mile SI derived unit of the scattering coefficient at a given direction per metre per steradian m-1.sr-1 SI derived unit of the quantity with dimension of L^(2/3) T-1 metre to the two thirds power per second m(2.3-1).s-1 Unit of area, accepted for use with SI: 1 ha = 1E4 m2 hectare ha SI derived unit of volumetric mixing ratio, equivalent to ppbv (parts per billion by volume); SI base unit equivalent: 1E-9 cubic millimetre per cubic metre mm3.m-3 watts per cubic metre per steradian W_m-3_sr-1 SI derived unit of sea surface wave variance spectral density square metre second m2.s SI derived unit of volume; SI base unit equivalent: 0.001 m3 litre l SI derived unit of radioactivity concentration; SI base unit equivalent: s-1.m-3 becquerel per cubic metre Bq.m-3 kilograms per kilogram kg_kg-1 decibels per degree dB_deg-1 SI base unit of mass kilogram kg SI derived unit of frequency; SI base unit equivalent: 1E9 s-1 gigahertz GHz 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 most probable number index number in 1 millilitre MPN.ml-1 watts per square metre W_m-2 Imperial/US unit of length, equal to 25.4 millimetres inch in SI prefixed unit of length; SI base unit equivalent: 1000 m kilometre km radians per metre rad_m-1 metres per second m_s-1 SI derived unit equivalent to expressing mole fraction in parts per thousand; SI base unit equivalent: 0.001 millimole per mole mmol.mol-1 SI derived unit of spatial gradient of electrical conductance; SI base equivalent: 0.1 S.m-1 millisiemens per centimetre mS.cm-1 SI derived unit of spatial gradient of electric conductance siemens per metre S.m-1 SI derived unit of pressure/stress; SI base unit equivalent: 100 kg.m-1.s-2 hectopascal hPa SI derived unit of pressure or equivalent quantity newton per square metre N.m-2 watts per square metre per steradian metre W_m-2_sr-1_m SI derived unit of quantity with dimension of T.L-1 second per metre s.m-1 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 watt per square metre per steradian per inverse centimetre W.m-2.sr-1.cm kilograms per kilogram per second kg_kg-1_s-1 millimetres per hour mm_h-1 SI derived unit of equivalent dose (of ionizing radiation); SI base unit equivalent: 0.001 m2.s-2 millisievert mSv SI derived unit of frequency; SI base unit equivalent: 1000 s-1 kilohertz kHz Units of turbidity from a calibrated nephelometer; SI base unit equivalent: 10-3 kg.m-3 nephelometric turbidity unit NTU kilometres per day km_d-1 SI derived unit of spatial gradient of temperature per metre; SI base unit equivalent: K.m-1 degree Celsius per metre degC.m-1 SI derived unit of potential vorticity kelvin square metre per kilogram per second K.m2.kg-1.s-1 degree (angle) degree_(angle) SI derived unit of time derivative of mass fraction; SI base unit equivalent: s-1 kilogram per kilogram per second kg.kg-1.s-1 watts per square metre per steradian W_m-2_sr-1 SI derived unit of electrical capacitance; SI base unit equivalent: kg-1.m-2.s4.A2 farad F cubic metres per second m3_s-1 Unit of mass, accepted for use with SI; SI base unit equivalent: 1000 kg tonne t parts per thousand 0.001 SI base unit of amount of substance mole mol SI derived unit of the second moment of area, area moment of inertia metre to the fourth power m4 Unit of length, accepted for use with SI: 1 AU = 149597870700 m, roughly the distance from Earth to the Sun astronomical unit AU SI derived unit of time derivative of pressure; SI base unit equivalent: 100 kg.m-1.s-3 hectopascal per second hPa.s-1 SI derived unit of mole fraction; SI base unit equivalent: 1E-9 nanomole per mole nmol.mol-1 becquerels per square metre Bq_m-2 SI derived unit of amount per unit mass; SI base unit equivalent: 1E-15 mol.kg-1 femtomole per kilogram fmol.kg-1 radian per second rad_s-1 decibels per metre dB_m-1 millibecquerels per cubic metre mBq_m-3 SI derived unit of area density kilogram per square metre kg.m-2 SI prefixed unit of length; SI base unit equivalent: 0.1 m decimetre dm SI derived unit of amount per unit mass; SI base unit equivalent: 1E-9 mol.kg-1 nanomole per kilogram nmol.kg-1 SI derived unit of volume fraction, equivalent to pptv (parts per trillion by volume); SI base unit equivalent: 1E-12 cubic micrometre per cubic centimetre um3.cm-3 Unit of area density, equal to 0.1 kg.m-2 (metric) ton per hectare t.ha-1 There is no value (categorical data) inapplicable inapplicable Unit of plane or phase angle, accepted for use with SI: 1 deg = (pi/180) rad degree (angle) deg 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' N units N_units kelvins per metre K_m-1 SI derived unit of radiance; SI base unit equivalent: kg.s-3 watt per square metre per steradian W.m-2.sr-1 becquerels per cubic metre Bq_m-3 SI derived unit of electrical conductance; SI base unit equivalent: kg-1.m-2.s3.A2 siemens S microgram CI per cubic metre ug_Cl_m-3 square metres per radian second m2_rad-1_s SI derived unit of voltage, electrical potential difference, electromotive force; SI base unit equivalent: kg.m2.s-3.A-1 volt V SI derived unit of pressure/stress; SI base unit equivalent: 10 kg.m-1.s-2 dekapascal daPa SI derived unit of solid angle; SI base unit equivalent: 1 steradian sr 116 SI derived unit of speed metre per second m.s-1 Conventional unit of mass; 1 u = 1 Da (Dalton) = 1.66053906660(50)E-27 kg unified atomic mass unit u Unit of cloud amount, expressed as number of eighths of the sky dome that is covered by clouds; SI base unit equivalent: 0.125 eights of sky covered by cloud okta per second (same as hertz) s-1 SI derived unit equivalent of mole fraction; SI base unit equivalent: 1E-12 picomole per mole pmol.mol-1 SI prefixed unit of length; SI base unit equivalent: 1E-9 m nanometre nm SI prefixed unit of length; SI base unit equivalent: 0.001 m millimetre mm degrees per second deg_s-1 Unit of color according to the Platinum/Cobalt or Apha-Hazen scale Hazen unit HU Unit of square of phase or plane angle, accepted for use with SI square degree (angle) deg2 acceleration due to gravity g Conventional unit, equivalent to per mille; SI based unit equivalent: 0.001 practical salinity unit psu SI derived unit of time derivative of pressure, pressure tendency; SI base unit equivalent: 0.1 kg.m-1.s-3 decipascal per second (microbar per second) dPa.s-1 SI base unit of electric current ampere A SI derived unit of time integrated radioactivity concentration; SI base unit equivalent: m-3 becquerel second per cubic metre Bq.s.m-3 degree Celsius Cel SI derived unit of spatial gradient of plane angle radian per metre rad.m-1 centimetres per hour cm_h-1 SI derived unit of time derivative of pressure; SI base unit equivalent: 1/108 kg.m-1.s-3 hectopascal per 3 hours hPa.(3h)-1 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) geopotential metre gpm Unit of volume fraction, equivalent to SI derived unit: 1E-9 parts per billion by volume ppbv Measurement unit watts per square metre per steradian centimetre W_m-2_sr-1_cm SI derived unit of magnetic induction, magnetic flux density; SI base unit equivalent: kg.s-2.A-1 tesla T hectopascals per 3 hours hPa_-1 SI derived unit of density, equivalent to kilograms per litre; SI base unit equivalent: 1000 kg.m-3 gram per cubic centimetre g.cm-3 SI derived unit of spatial gradient of speed; SI base unit equivalent: 0.001 s-1 metre per second per 1000 metres m.s-1.km-1 SI derived unit of mass concentration; SI base unit equivalent: 1 kg.m-3 milligram per cubic centimetre mg.cm-3 2024-01-02T17:14:30.589Z SI derived unit of spatial gradient of temperature per 100 metres; SI base unit equivalent: 0.01 K.m-1 degree Celsius per 100 metres degC.hm-1 SI derived unit of equivalent dose (of ionizing radiation); SI base unit equivalent: m2.s-2 sievert Sv SI derived unit of mass fraction, dimensionless; SI base unit equivalent: 0.001 gram per kilogram g.kg-1 hectopascals per second hPa_s-1 watts per metre per steradian W_m-1_sr-1 SI derived unit of amount per unit mass; SI base unit equivalent: 1E-12 mol.kg-1 picomole per kilogram pmol.kg-1 metres per second per metre m_s-1_m-1 picomoles per mole pmol_mol-1 SI base unit of luminous intensity candela cd square metres per hertz m2_Hz-1 kilometres per hour km_h-1 SI derived unit of volume fraction; SI base unit equivalent: 1 cubic metre per cubic metre m3.m-3 Unit of time, accepted for use with SI: 1 h = 3600 s hour h SI derived unit of voltage, electrical potential difference, electromotive force; SI base unit equivalent: 0.001 m2.kg.s-3.A-1 millivolt mV Conventional unit of pressure; SI base unit equivalent: 1E-4 kg.m-1.s-2 nanobar nbar seconds per metre s_m-1 Conventional unit of time derivative of pressure, pressure tendency; SI base unit: 1000 kg.m-1.s-3 centibar per second cb.s-1 SI derived unit of pressure/stress, equal to 1000 Pa; SI base unit equivalent: 1000 kg.m-1.s-2 kilopascal kPa kilograms per square metre kg_m-2 nanomoles per mole nmol_mol-1 Conventional unit of pressure, equal to 1 hPa; SI base unit equivalent: 100 kg.m-1.s-2 millibar mbar Unit of sound intensity, accepted for use with SI decibel dB SI derived unit of time derivative of pressure; SI base unit equivalent: 1/36 kg.m-1.s-3 hectopascal per hour hPa.h-1 Measurement unit SI derived unit of mass concentration; SI base unit equivalent: 1E-6 kg.m-3 microgram per litre ug.l-1 SI derived unit of quantity with dimension of reciprocal length, e.g., wave number, optical power, curvature, spatial frequency per metre m-1 SI derived unit of time derivative of mass area density kilogram per square metre per second kg.m-2.s-1 SI derived unit of area; SI base unit equivalent: 1E-4 m2 square centimetre cm2 decipascals per second (microbar per second) dPa_s-1 pascals per second Pa_s-1 SI prefixed unit of length; SI base unit equivalent: 1E-6 m micrometre um milligram S per litre mg_S_l-1 SI base unit of length metre m centibars per 12 hours cb_-1 Unit of volume fraction, equivalent to SI derived unit: 1E-12 parts per trillion by volume pptv SI derived unit of spatial gradient of electrical conductance; SI base unit equivalent: 1E-4 m-3.kg-1.s3.A2 microsiemens per centimetre uS.cm-1 SI derived unit of frequency; SI base unit equivalent: 1E12 s-1 terahertz THz micrograms per cubic metre at 25 degrees ug_m-3_25C metres per second squared m_s-2 kelvin square metres per kilogram per second K_m2_kg-1_s-1 SI prefixed unit of length; SI base unit equivalent: 0.01 m centimetre cm SI derived unit of speed; SI base unit equivalent: 1/3.6E6 m.s-1 millimetre per hour mm.h-1 Unit of plane or phase angle, accepted for use with SI: 1 '' = (pi/648000) rad second (angle) '' joules per square metre J_m-2 Unit of radioactivity concentration; SI base unit equivalent: 0.001 s-1.m-3 becquerel per litre Bq.l-1 SI derived unit of radioactivity; SI base unit equivalent: s-1 becquerel Bq kilograms per cubic metre kg_m-3 microgram C per cubic metre ug_C_m-3