ODM2 Controlled Vocabularies Login

Variable Name Vocabulary

A vocabulary for describing the name of Variables.

Term Name Definition
1_1_1_Trichloroethane 1,1,1-Trichloroethane 1,1,1-Trichloroethane (C2H3Cl3)
1_1_2_2_Tetrachloroethane 1,1,2,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane (C2H2Cl4)
1_1_2_Trichloroethane 1,1,2-Trichloroethane 1,1,2-Trichloroethane (C2H3Cl3)
1_1_Dichloroethane 1,1-Dichloroethane 1,1-Dichloroethane (C2H4Cl2)
1_1_Dichloroethene 1,1-Dichloroethene 1,1-Dichloroethene (C2H2Cl2)
1_2_3_Trimethylbenzene 1,2,3-Trimethylbenzene 1,2,3-Trimethylbenzene (C9H12)
1_2_4_5_Tetrachlorobenzene 1,2,4,5-tetrachlorobenzene 1,2,4,5-tetrachlorobenzene (C6H2Cl4)
1_2_4_Trichlorobenzene 1,2,4-Trichlorobenzene 1,2,4-Trichlorobenzene (C6H3Cl3)
1_2_4_Trimethylbenzene 1,2,4-Trimethylbenzene 1,2,4-Trimethylbenzene
1_2_Dibromo_3_Chloropropane 1,2-Dibromo-3-chloropropane 1,2-Dibromo-3-chloropropane (C3H5Br2Cl)
1_2_Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dichlorobenzene (C6H4Cl2)
1_2_Dichloroethane 1,2-Dichloroethane 1,2-Dichloroethane (C2H4Cl2)
1_2_Dichloropropane 1,2-Dichloropropane 1,2-Dichloropropane (C3H6Cl2)
1_2_Dimethylnaphthalene 1,2-Dimethylnaphthalene 1,2-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1_2_Dinitrobenzene 1,2-Dinitrobenzene 1,2-Dinitrobenzene (C6H4N2O4)
1_2_Diphenylhydrazine 1,2-Diphenylhydrazine 1,2-Diphenylhydrazine (C12H12N2)
1_3_5_Trimethylbenzene 1,3,5-Trimethylbenzene 1,3,5-Trimethylbenzene (C6H3(CH3)3)
1_3_Dichlorobenzene 1,3-Dichlorobenzene 1,3-Dichlorobenzene (C6H4Cl2)
1_3_Dimethyladamantane 1,3-Dimethyladamantane 1,3-Dimethyladamantane (C12H20).
1_3_Dimethylnaphthalene 1,3-Dimethylnaphthalene 1,3-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1_3_Dinitrobenzene 1,3-Dinitrobenzene 1,3-Dinitrobenzene (C6H4N2O4)
1_4_5_8_Tetramethylnaphthalene 1,4,5,8-Tetramethylnaphthalene 1,4,5,8-Tetramethylnaphthalene (C14H16), a polycyclic aromatic hydrocarbon (PAH)
1_4_5_Trimethylnaphthalene 1,4,5-Trimethylnaphthalene 1,4,5-Trimethylnaphthalene (C10H5(CH3)3), a polycyclic aromatic hydrocarbon (PAH)
1_4_6_Trimethylnaphthalene 1,4,6-Trimethylnaphthalene 1,4,6-Trimethylnaphthalene (C10H5(CH3)3), a polycyclic aromatic hydrocarbon (PAH)
1_4_Dichlorobenzene 1,4-Dichlorobenzene 1,4-Dichlorobenzene (C6H4Cl2)
1_4_Dimethylnaphthalene 1,4-Dimethylnaphthalene 1,4-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1_4_Dinitrobenzene 1,4-Dinitrobenzene 1,4-Dinitrobenzene (C6H4N2O4)
1_5_Dimethylnaphthalene 1,5-Dimethylnaphthalene 1,5-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1_6_7_Trimethylnaphthalene 1,6,7-Trimethylnaphthalene 1,6,7-Trimethylnaphthalene (C10H5(CH3)3), a polycyclic aromatic hydrocarbon (PAH)
1_6_Dimethylnaphthalene 1,6-Dimethylnaphthalene 1,6-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1_8_Dimethylnaphthalene 1,8-Dimethylnaphthalene 1,8-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1_Chloronaphthalene 1-Chloronaphthalene 1-Chloronaphthalene (C10H7Cl)
1_Ethylnaphthalene 1-Ethylnaphthalene 1-Ethylnaphthalene (C10H7C2H5), a polycyclic aromatic hydrocarbon (PAH)
1_Methylanthracene 1-Methylanthracene 1-Methylanthracene (C15H12), a polycyclic aromatic hydrocarbon (PAH)
1_Methyldibenzothiophene 1-Methyldibenzothiophene 1-Methyldibenzothiophene (C13H10S)
1_Methylfluorene 1-Methylfluorene 1-Methylfluorene (C14H12), a polycyclic aromatic hydrocarbon (PAH)
1_Methylnaphthalene 1-Methylnaphthalene 1-Methylnaphthalene (C10H7CH3), a polycyclic aromatic hydrocarbon (PAH)
1_Methylphenanthrene 1-Methylphenanthrene 1-Methylphenanthrene (C15H12), a polycyclic aromatic hydrocarbon (PAH)
1_NaphthalenolMethylcarbamate 1-Naphthalenol methylcarbamate 1-Naphthalenol methylcarbamate (C12H11NO2)
19_Hexanoyloxyfucoxanthin 19-Hexanoyloxyfucoxanthin The phytoplankton pigment 19-Hexanoyloxyfucoxanthin
2_2_DichlorovinylDimethylPhosphate 2,2-dichlorovinyl dimethyl phosphate 2,2-dichlorovinyl dimethyl phosphate (C4H7Cl2O4P)
2_3_4_6_Tetrachlorophenol 2,3,4,6-Tetrachlorophenol 2,3,4,6-Tetrachlorophenol (C6H2Cl4O)
2_3_5_Trimethylnaphthalene 2,3,5-Trimethylnaphthalene 2,3,5-Trimethylnaphthalene (C13H14), a polycyclic aromatic hydrocarbon (PAH)
2_3_6_Trimethylnaphthalene 2,3,6-Trimethylnaphthalene 2,3,6-Trimethylnaphthalene (C10H5(CH3)3), a polycyclic aromatic hydrocarbon (PAH)
2_3_Dimethylnaphthalene 2,3-Dimethylnaphthalene 2,3-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
2_4_5_Trichlorophenol 2,4,5-Trichlorophenol 2,4,5-Trichlorophenol (C6H3Cl3O)
2_4_6_Trichlorophenol 2,4,6-Trichlorophenol 2,4,6-Trichlorophenol (TCP) (C6H2Cl3OH)
2_4_Dichlorophenol 2,4-Dichlorophenol 2,4-Dichlorophenol (C6H4Cl2O)
2_4_Dimethylphenol 2,4-Dimethylphenol 2,4-Dimethylphenol (C8H10O)
2_4_Dinitrophenol 2,4-Dinitrophenol 2,4-Dinitrophenol (C6H4N2O5)
2_4_Dinitrotoluene 2,4-Dinitrotoluene 2,4-Dinitrotoluene (C7H6N2O4)
2_6_Dichlorophenol 2,6-Dichlorophenol 2,6-Dichlorophenol (C6H4Cl2O)
2_6_Dinitrotoluene 2,6-Dinitrotoluene 2,6-Dinitrotoluene (C7H6N2O4)
2_7_Dimethylnaphthalene 2,7-Dimethylnaphthalene 2,7-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
2_Butanone_MEK 2-Butanone (MEK) 2-Butanone (MEK) (C4H8O)
2_Butoxyethanol 2-Butoxyethanol 2-Butoxyethanol (CH3(CH2)2CH2OCH2OH)
2_Chloronaphthalene 2-Chloronaphthalene 2-Chloronaphthalene (C10H7Cl)
2_Chlorophenol 2-Chlorophenol 2-Chlorophenol (C6H5ClO)
2_Hexanone 2-Hexanone 2-Hexanone (C6H12O)
2_Methylanthracene 2-Methylanthracene 2-Methylanthracene (C15H12), a polycyclic aromatic hydrocarbon (PAH)
2_Methyldibenzothiophene 2-Methyldibenzothiophene 2-Methyldibenzothiophene (C13H10S), a polycyclic aromatic hydrocarbon (PAH)
2_Methylnaphthalene 2-Methylnaphthalene 2-Methylnaphthalene (C10H7CH3), a polycyclic aromatic hydrocarbon (PAH)
2_Methylphenanthrene 2-Methylphenanthrene 2-Methylphenanthrene (C15H12), a polycyclic aromatic hydrocarbon (PAH)
2_Methylphenol 2-Methylphenol 2-Methylphenol (C7H8O)
2_Nitroaniline 2-Nitroaniline 2-Nitroaniline (C6H6N2O2)
2_Nitrophenol 2-Nitrophenol 2-Nitrophenol (C6H5NO3)
3_3_Dichlorobenzidine 3,3-Dichlorobenzidine 3,3-Dichlorobenzidine (C12H10Cl2N2)
3_6_Dimethylphenanthrene 3,6-Dimethylphenanthrene 3,6-Dimethylphenanthrene (C16H14), a polycyclic aromatic hydrocarbon (PAH)
3_Nitroaniline 3-Nitroaniline 3-Nitroaniline (C6H6N2O2)
4_4_DDD 4,4-DDD Dichlorodiphenyldichloroethane (C14H10Cl4)
4_4_DDE 4,4-DDE Dichlorodiphenyldichloroethylene (C14H8Cl4)
4_4_DDT 4,4-DDT Dichlorodiphenyltrichloroethane (C14H9Cl5)
4_4_Methylenebis_2_Chloroaniline 4,4-Methylenebis(2-chloroaniline) 4,4'-Methylenebis(2-chloroaniline) (C13H12Cl2N2)
4_4_Methylenebis_N_N_Dimethylaniline 4,4-Methylenebis(N,N-dimethylaniline) 4,4'-Methylenebis(N,N-dimethylaniline) (C17H22N2)
4_6_Dinitro_2_Methylphenol 4,6-Dinitro-2-methylphenol 4,6-Dinitro-2-methylphenol (C7H6N2O5)
4_BromophenylphenylEther 4-Bromophenylphenyl ether 4-Bromophenylphenyl ether (C12H9BrO)
4_Chloro_3_Methylphenol 4-Chloro-3-methylphenol 4-Chloro-3-methylphenol (C7H7ClO)
4_Chloroaniline 4-Chloroaniline 4-Chloroaniline (C6H6ClN)
4_ChlorophenylphenylEther 4-Chlorophenylphenyl ether 4-Chlorophenylphenyl ether (C12H9ClO)
4_Methylchrysene 4-Methylchrysene 4-Methylchrysene (C19H14), a polycyclic aromatic hydrocarbon (PAH)
4_Methyldibenzothiophene 4-Methyldibenzothiophene 4-Methyldibenzothiophene (C13H10S), a polycyclic aromatic hydrocarbon (PAH)
4_Methylphenol 4-Methylphenol 4-Methylphenol (C7H8O)
4_Nitroaniline 4-Nitroaniline 4-Nitroaniline (C6H6N2O2)
4_Nitrophenol 4-Nitrophenol 4-Nitrophenol (C6H5NO3)
9_cis_Neoxanthin 9 cis-Neoxanthin The phytoplankton pigment 9 cis-Neoxanthin
9_10_Dimethylanthracene 9,10-Dimethylanthracene 9,10-Dimethylanthracene (C16H14), a polycyclic aromatic hydrocarbon (PAH)
absorbance Absorbance The amount of radiation absorbed by a material
abundance Abundance The relative representation of a species in a particular ecosystem. If this generic term is used, the publisher should specify/qualify the species, class, etc. being measured in the method, qualifier, or other appropriate field.
acenaphthene Acenaphthene Acenaphthene (C12H10)
acenaphthylene Acenaphthylene Acenaphthylene (C12H8), a polycyclic aromatic hydrocarbon (PAH)
acetate Acetate Acetate
aceticAcid Acetic Acid Acetic Acid (C2H4O2)
acetone Acetone Acetone (C3H6O)
acetophenone Acetophenone Acetophenone (C6H5C(O)CH3)
acidNeutralizingCapacity Acid neutralizing capacity Acid neutralizing capacity
acidPhosphatase Acid phosphatase Phosphatase enzymes are used by soil microorganisms to access organically bound phosphate nutrients. An assay on the rates of activity of these enzymes may be used to ascertain biological demand for phosphates in the soil. Some plant roots, especially cluster roots, exude carboxylates that perform acid phosphatase activity, helping to mobilise phosphorus in nutrient-deficient soils.
acidityCO2Acidity Acidity, CO2 acidity CO2 acidity
acidityExchange Acidity, exchange The total amount of the Cation Exchange Capacity (CEC) of a soil that is due to H+ and Al3+ ions. It is a proportion of the total acidity and it is dependent on the type of soil and the percentage of the CEC that is composed of exchangeable bases (Ca2+, Mg2+, K+).
acidityHot Acidity, hot Hot Acidity
acidityMineralAcidity Acidity, mineral acidity Mineral Acidity
acidityTotalAcidity Acidity, total acidity Total acidity
adamantane Adamantane Adamantane (C10H16)
agencyCode Agency code Code for the agency which analyzed the sample
albedo Albedo The ratio of reflected to incident light.
aldrin Aldrin Aldrin (C12H8Cl6)
alkalinityBicarbonate Alkalinity, bicarbonate Bicarbonate Alkalinity
alkalinityCarbonate Alkalinity, carbonate Carbonate Alkalinity
alkalinityCarbonatePlusBicarbonate Alkalinity, carbonate plus bicarbonate Alkalinity, carbonate plus bicarbonate
alkalinityHydroxide Alkalinity, hydroxide Hydroxide Alkalinity
alkalinityTotal Alkalinity, total Total Alkalinity
alloxanthin Alloxanthin The phytoplankton pigment Alloxanthin
alphaNAcetylglucosaminidase Alpha-N-Acetylglucosaminidase An enzyme with system name alpha-N-acetyl-D-glucosaminide N-acetylglucosaminohydrolase.[1][2][3][4] This enzyme catalyses the following chemical reaction: Hydrolysis of terminal non-reducing N-acetyl-D-glucosamine residues in N-acetyl-alpha-D-glucosaminides.
aluminum Aluminum Aluminium (in Commonwealth English) or Aluminum (in American English) is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal.
aluminumDissolved Aluminum, dissolved Dissolved Aluminum (Al)
aluminumParticulate Aluminum, particulate Particulate aluminum in suspension
aluminumTotal Aluminum, total Aluminum (Al). Total indicates was measured on a whole water sample.
ammoniumFlux Ammonium flux Ammonium (NH4) flux
aniline Aniline Aniline (C6H7N)
anthracene Anthracene Anthracene (C14H10), a polycyclic aromatic hydrocarbon (PAH)
antimonyDissolved Antimony, dissolved Dissolved antimony (Sb)."Dissolved" indicates measurement was on a filtered sample.
antimonyDistributionCoefficient Antimony, distribution coefficient Ratio of concentrations of antimony in two phases in equilibrium with each other. Phases must be specified.
antimonyParticulate Antimony, particulate Particulate antimony (Sb) in suspension
antimonyTotal Antimony, total Total antimony (Sb). "Total" indicates was measured on a whole water (unfiltered) sample.
area Area Area of a measurement location
argon Argon Argon
argonDissolved Argon, dissolved Dissolved Argon
aroclor_1016 Aroclor-1016 Aroclor-1016 (C24H13Cl7), a PCB mixture
aroclor_1242 Aroclor-1242 Aroclor-1242 (C12H6Cl4), a PCB mixture
aroclor_1254 Aroclor-1254 Aroclor-1254 (C12H5Cl5), a PCB mixture
aroclor_1260 Aroclor-1260 Aroclor-1260 (C12H3Cl7), a PCB mixture
arsenicDissolved Arsenic, dissolved Dissolved Arsenic. For chemical terms, dissolved represents a filtered sample.
arsenicDistributionCoefficient Arsenic, distribution coefficient Ratio of concentrations of arsenic in two phases in equilibrium with each other. Phases must be specified.
arsenicParticulate Arsenic, particulate Particulate arsenic (As) in suspension
arsenicTotal Arsenic, total Total arsenic (As). Total indicates was measured on a whole water sample.
asteridaeCoverage Asteridae coverage Areal coverage of the plant Asteridae
bariumDissolved Barium, dissolved Dissolved Barium (Ba)
bariumDistributionCoefficient Barium, distribution coefficient Ratio of concentrations of barium in two phases in equilibrium with each other. Phases must be specified
bariumParticulate Barium, particulate Particulate barium (Ba) in suspension
bariumTotal Barium, total Total Barium (Ba). For chemical terms, "total" indicates an unfiltered sample.
barometricPressure Barometric pressure Barometric pressure
baseflow Baseflow The portion of streamflow (discharge) that is supplied by groundwater sources.
batisMaritimaCoverage Batis maritima Coverage Areal coverage of the plant Batis maritima
batteryTemperature Battery temperature The battery temperature of a datalogger or sensing system
batteryVoltage Battery voltage The battery voltage of a datalogger or sensing system, often recorded as an indicator of data reliability
benthos Benthos Benthic species
benz_a_anthracene Benz(a)anthracene Benz(a)anthracene (C18H12), a polycyclic aromatic hydrocarbon (PAH)
benzene Benzene Benzene (C6H6)
benzo_a_pyrene Benzo(a)pyrene Benzo(a)pyrene (C20H12), a polycyclic aromatic hydrocarbon (PAH)
benzo_b_fluoranthene Benzo(b)fluoranthene Benzo(b)fluoranthene (C20H12), a polycyclic aromatic hydrocarbon (PAH)
benzo_b_fluorene Benzo(b)fluorene Benzo(b)fluorene (C17H12), a polycyclic aromatic hydrocarbon (PAH)
benzo_e_pyrene Benzo(e)pyrene Benzo(e)pyrene (C20H12), a polycyclic aromatic hydrocarbon (PAH)
benzo_g_h_i_perylene Benzo(g,h,i)perylene Benzo(g,h,i)perylene (C22H12), a polycyclic aromatic hydrocarbon (PAH)
benzo_k_fluoranthene Benzo(k)fluoranthene Benzo(k)fluoranthene (C20H12), a polycyclic aromatic hydrocarbon (PAH)
benzoicAcid Benzoic acid Benzoic acid (C7H6O2)
benzylAlcohol Benzyl alcohol Benzyl alcohol (C7H8O)
berylliumDissolved Beryllium, dissolved Dissolved Beryllium (Be) . For chemical terms, "dissolved"indicates a filtered sample.
berylliumTotal Beryllium, total Total Beryllium (Be). For chemical terms, "total" indicates an unfiltered sample.
betaGlucosidase Beta-glucosidase Beta-glucosidase catalyzes the hydrolysis of the glycosidic bonds to terminal non-reducing residues in beta-D-glucosides and oligosaccharides, with release of glucose.
bicarbonate Bicarbonate Bicarbonate (HCO3-)
bifenthrin Bifenthrin Bifenthrin (C23H22ClF3O2)
biogenicSilica Biogenic silica Hydrated silica (SiO2 nH20)
biomass Biomass Mass of living biological organisms in a given area or ecosystem at a given time. If this generic term is used, the publisher should specify/qualify the species, class, etc. being measured in the method, qualifier, or other appropriate field.
biomassPhytoplankton Biomass, phytoplankton Total mass of phytoplankton, per unit area or volume
biomassTotal Biomass, total Total biomass
biphenyl Biphenyl Biphenyl ((C6H5)2), a polycyclic aromatic hydrocarbon (PAH), also known as diphenyl or phenylbenzene or 1,1'-biphenyl or lemonene
bis_2_Chloroethoxy_Methane Bis(2-chloroethoxy)methane Bis(2-chloroethoxy)methane (C5H10Cl2O2)
bis_2_Chloroethyl_Ether bis(2-Chloroethyl)ether bis(2-Chloroethyl)ether (C4H8Cl2O)
bis_2_Ethylhexyl_Phthalate Bis-(2-ethylhexyl) phthalate Bis-(2-ethylhexyl) phthalate (C6H4(C8H17COO)2)
bis_2_ChloroisopropylEther bis-2-chloroisopropyl ether bis-2-chloroisopropyl ether (C6H12Cl2O)
blue_GreenAlgae_Cyanobacteria_Phycocyanin Blue-green algae (cyanobacteria), phycocyanin Blue-green algae (cyanobacteria) with phycocyanin pigments
BOD1 BOD1 1-day Biochemical Oxygen Demand
BOD2Carbonaceous BOD2, carbonaceous 2-day Carbonaceous Biochemical Oxygen Demand
BOD20 BOD20 20-day Biochemical Oxygen Demand
BOD20Carbonaceous BOD20, carbonaceous 20-day Carbonaceous Biochemical Oxygen Demand
BOD20Nitrogenous BOD20, nitrogenous 20-day Nitrogenous Biochemical Oxygen Demand
BOD3Carbonaceous BOD3, carbonaceous 3-day Carbonaceous Biochemical Oxygen Demand
BOD4Carbonaceous BOD4, carbonaceous 4-day Carbonaceous Biological Oxygen Demand
BOD5 BOD5 5-day Biochemical Oxygen Demand
BOD5Carbonaceous BOD5, carbonaceous 5-day Carbonaceous Biochemical Oxygen Demand
BOD5Nitrogenous BOD5, nitrogenous 5-day Nitrogenous Biochemical Oxygen Demand
BOD6Carbonaceous BOD6, carbonaceous 6-day Carbonaceous Biological Oxygen Demand
BOD7Carbonaceous BOD7, carbonaceous 7-day Carbonaceous Biochemical Oxygen Demand
BODu BODu Ultimate Biochemical Oxygen Demand
BODuCarbonaceous BODu, carbonaceous Carbonaceous Ultimate Biochemical Oxygen Demand
BODuNitrogenous BODu, nitrogenous Nitrogenous Ultimate Biochemical Oxygen Demand
bodyLength Body length Length of the body of an organism
boreholeLogMaterialClassification Borehole log material classification Classification of material encountered by a driller at various depths during the drilling of a well and recorded in the borehole log.
boronDissolved Boron, dissolved dissolved boron
boronTotal Boron, total Total Boron (B)
borrichiaFrutescensCoverage Borrichia frutescens Coverage Areal coverage of the plant Borrichia frutescens
bromideDissolved Bromide, dissolved Dissolved Bromide (Br-)
bromideTotal Bromide, total Total Bromide (Br-)
bromine Bromine Bromine (Br2)
bromineDissolved Bromine, dissolved Dissolved Bromine (Br2)
bromodichloromethane Bromodichloromethane Bromodichloromethane (CHBrCl2)
bromoform Bromoform Bromoform (CHBr3), a haloform
bromomethane_MethylBromide Bromomethane (Methyl bromide) Bromomethane (Methyl bromide) (CH3Br)
bulkDensity Bulk density The mass of many particles of the material divided by the total volume they occupy. The total volume includes particle volume, inter-particle void volume and internal pore volume.
bulkElectricalConductivity Bulk electrical conductivity Bulk electrical conductivity of a medium measured using a sensor such as time domain reflectometry (TDR), as a raw sensor response in the measurement of a quantity like soil moisture.
butane Butane Butane
butylbenzylphthalate Butylbenzylphthalate Butylbenzylphthalate (C19H20O4)
butyricAcid Butyric Acid Butyric Acid (C4H8O2)
cadmiumDissolved Cadmium, dissolved Dissolved Cadmium. For chemical terms, "dissolved" indicates a filtered sample.
cadmiumDistributionCoefficient Cadmium, distribution coefficient Ratio of concentrations of cadmium in two phases in equilibrium with each other. Phases must be specified.
cadmiumParticulate Cadmium, particulate Particulate cadmium (Cd) in suspension
cadmiumTotal Cadmium, total Total Cadmium (Cd). For chemical terms, "total" indciates an unfiltered sample.
calciumDissolved Calcium, dissolved Dissolved Calcium (Ca)
calciumTotal Calcium, total Total Calcium (Ca)
canthaxanthin Canthaxanthin The phytoplankton pigment Canthaxanthin
carbaryl Carbaryl Carbaryl (C12H11NO2)
carbazole Carbazole Carbazole (C12H9N)
carbonDioxide Carbon dioxide Carbon dioxide
carbonDioxideFlux Carbon dioxide flux Carbon dioxide (CO2) flux
carbonDioxideStorageFlux Carbon dioxide storage flux Carbon dioxide (CO2) storage flux
carbonDioxideDissolved Carbon Dioxide, dissolved Dissolved Carbon dioxide (CO2)
carbonDioxideTransducerSignal Carbon dioxide, transducer signal Carbon dioxide (CO2), raw data from sensor
carbonDisulfide Carbon disulfide Carbon disulfide (CS2)
carbonMonoxideDissolved Carbon monoxide, dissolved Dissolved carbon monoxide (CO)
carbonTetrachloride Carbon tetrachloride Carbon tetrachloride (CCl4)
carbonToNitrogenMassRatio Carbon to nitrogen mass ratio Carbon to nitrogen (C:N) mass ratio
carbonToNitrogenMolarRatio Carbon to nitrogen molar ratio Carbon to nitrogen (C:N) molar ratio
carbonDissolvedInorganic Carbon, dissolved inorganic Dissolved Inorganic Carbon
carbonDissolvedOrganic Carbon, dissolved organic Dissolved Organic Carbon
carbonDissolvedTotal Carbon, dissolved total Dissolved Total (Organic+Inorganic) Carbon
carbonParticulateOrganic Carbon, particulate organic Particulate organic carbon in suspension
carbonSuspendedInorganic Carbon, suspended inorganic Suspended Inorganic Carbon
carbonSuspendedOrganic Carbon, suspended organic DEPRECATED -- The use of this term is discouraged in favor of the use of the synonymous term "Carbon, particulate organic".
carbonSuspendedTotal Carbon, suspended total Suspended Total (Organic+Inorganic) Carbon
carbonTotal Carbon, total Total (Dissolved+Particulate) Carbon
carbonTotalInorganic Carbon, total inorganic Total (Dissolved+Particulate) Inorganic Carbon
carbonTotalOrganic Carbon, total organic Total (Dissolved+Particulate) Organic Carbon
carbonTotalSolidPhase Carbon, total solid phase Total solid phase carbon
carbon_13StableIsotopeRatioDelta Carbon-13, stable isotope ratio delta Difference in the 13C:12C ratio between the sample and standard (del C 13)
carbon_14 Carbon-14 A radioactive isotope of carbon which undergoes beta decay
carbonate Carbonate Carbonate ion (CO3-2) concentration
cellobiohydrolase Cellobiohydrolase Exocellulases or cellobiohydrolases cleave two to four units from the ends of the exposed chains produced by endocellulase, resulting in tetrasaccharides or disaccharides, such as cellobiose. Exocellulases are further classified into type I, that work processively from the reducing end of the cellulose chain, and type II, that work processively from the nonreducing end.
cesiumDissolved Cesium, dissolved Dissolved Cesium (Cs)
cesiumTotal Cesium, total Total Cesium (Cs)
cesium_137 Cesium-137 A radioactive isotope of cesium which is formed as a fission product by nuclear fission of uranium or plutonium.
chloride Chloride Chloride (Cl-)
chlorideDissolved Chloride, dissolved Dissolved Chloride (Cl-)
chlorideTotal Chloride, total Total Chloride (Cl-)
chlorine Chlorine Chlorine (Cl2)
chlorineDissolved Chlorine, dissolved Dissolved Chlorine (Cl2)
chlorobenzene Chlorobenzene Chlorobenzene (C6H5Cl)
chlorobenzilate Chlorobenzilate Chlorobenzilate (C16H14Cl2O3)
chloroethane Chloroethane Chloroethane (C2H5Cl)
chloroethene Chloroethene Chloroethene (C2H3Cl)
chloroform Chloroform Chloroform (CHCl3), a haloform
chloromethane Chloromethane Chloromethane (CH3Cl)
chlorophyll_a_b_c Chlorophyll (a+b+c) Chlorophyll (a+b+c)
chlorophyll_a Chlorophyll a Chlorophyll a
chlorophyll_a_Allomer Chlorophyll a allomer The phytoplankton pigment Chlorophyll a allomer
chlorophyll_a_CorrectedForPheophytin Chlorophyll a, corrected for pheophytin Chlorphyll a corrected for pheophytin
chlorophyll_a_UncorrectedForPheophytin Chlorophyll a, uncorrected for pheophytin Chlorophyll a uncorrected for pheophytin
chlorophyll_b Chlorophyll b Chlorophyll b
chlorophyll_c Chlorophyll c Chlorophyll c
chlorophyll_c1_And_c2 Chlorophyll c1 and c2 Chlorophyll c1 and c2
chlorophyllFluorescence Chlorophyll fluorescence Chlorophyll Fluorescence
chromium_III Chromium (III) Trivalent Chromium
chromium_VI Chromium (VI) Hexavalent Chromium
chromium_VI_Dissolved Chromium (VI), dissolved Dissolved Hexavalent Chromium
chromiumDissolved Chromium, dissolved Dissolved Chromium
chromiumDistributionCoefficient Chromium, distribution coefficient Ratio of concentrations of chromium in two phases in equilibrium with each other. Phases must be specified.
chromiumParticulate Chromium, particulate Particulate chromium (Cr) in suspension
chromiumTotal Chromium, total Total chromium (Cr). Total indicates was measured on a whole water (unfiltered) sample.
chrysene Chrysene Chrysene (C18H12), a polycyclic aromatic hydrocarbon (PAH)
cis_1_2_Dichloroethene cis-1,2-Dichloroethene cis-1,2-Dichloroethene (C2H2Cl2)
cis_1_3_Dichloropropene cis-1,3-Dichloropropene cis-1,3-Dichloropropene (C3H4Cl2)
Clay Clay USDA particle size distribution category. Less then 0.002 mm diameter fine earth particles.
cobaltDissolved Cobalt, dissolved Dissolved Cobalt (Co)
cobaltTotal Cobalt, total Total Cobalt (Co)
cobalt_60 Cobalt-60 A synthetic radioactive isotope of cobalt with a half-life of 5.27 years.
COD COD Chemical oxygen demand
coliformFecal Coliform, fecal Fecal Coliform
coliformTotal Coliform, total Total Coliform
color Color Color in quantified in color units
coloredDissolvedOrganicMatter Colored dissolved organic matter The concentration of colored dissolved organic matter (humic substances)
containerNumber Container number The identifying number for a water sampler container.
copperDissolved Copper, dissolved Dissolved Copper (Cu)
copperDistributionCoefficient Copper, distribution coefficient Ratio of concentrations of copper in two phases in equilibrium with each other. Phases must be specified.
copperParticulate Copper, particulate Particulate copper (Cu) in suspension
copperTotal Copper, total Total copper (Cu). "Total" indicates was measured on a whole water (unfiltered) sample.
counter Counter The total number of events within the measurement period
cryptophytes Cryptophytes The chlorophyll a concentration contributed by cryptophytes
cuscutaSppCoverage Cuscuta spp. coverage Areal coverage of the plant Cuscuta spp.
cyanide Cyanide Cyanide (CN)
cyclohexane Cyclohexane Cyclohexane (C6H6Cl6)
cytochromeP450Family1SubfamilyAPolypeptide1DeltaCycleThreshold Cytochrome P450, family 1, subfamily A, polypeptide 1, delta cycle threshold Delta cycle threshold for Cytochrome P450, family 1, subfamily A, polypeptide 1 (cyp1a1). Cycle threshold is the PCR cycle number at which the fluorescent signal of the gene being amplified crosses the set threshold. Delta cycle threshold for cyp1a1 is the difference between the cycle threshold (Ct) of cyp1a1 gene expression and the cycle threshold (Ct) for the gene expression of the reference gene (e.g., beta-actin).
cytosolicProtein Cytosolic protein The total protein concentration within the cytosolic fraction of cells. The cytosol refers to the intracellular fluid or cytoplasmic matrix of a eukaryotic cell.
d_Limonene d-Limonene d-Limonene (C10H16)
dataShuttleAttached Data shuttle attached A categorical variable marking the attachment of a coupler or data shuttle to a logger. This is used for quality control.
dataShuttleDetached Data shuttle detached A categorical variable marking the detatchment of a coupler or data shuttle to a logger. This is used for quality control.
delta_13COfC2H6 delta-13C of C2H6 Isotope 13C of ethane
delta_13COfC3H8 delta-13C of C3H8 Isotope 13C of propane
delta_13COfC4H10 delta-13C of C4H10 Isotope 13C of butane
delta_13COfCH4 delta-13C of CH4 Isotope 13C of methane
delta_13COfCO2 delta-13C of CO2 Isotope 13C of carbon dioxide
delta_13COfDIC delta-13C of DIC Isotope 13C of dissolved inorganic carbon (DIC)
delta_18OOfH2O delta-18O of H2O Isotope 18O of water
delta_DOfCH4 delta-D of CH4 hydrogen isotopes of methane
delta_DOfH2O delta-D of H2O hydrogen isotopes of water
density Density Density
deuterium Deuterium Deuterium (2H), Delta D
di_n_Butylphthalate Di-n-butylphthalate Di-n-butylphthalate (C16H22O4)
di_n_OctylPhthalate Di-n-octyl phthalate Di-n-octyl phthalate (C24H38O4)
diadinoxanthin Diadinoxanthin The phytoplankton pigment Diadinoxanthin
diallate_CisOrTrans Diallate (cis or trans) Diallate (cis or trans) (C10H17Cl2NOS)
diatoxanthin Diatoxanthin The phytoplankton pigment Diatoxanthin
dibenz_a_h_anthracene Dibenz(a,h)anthracene Dibenz(a,h)anthracene (C22H14), a polycyclic aromatic hydrocarbon (PAH)
dibenzofuran Dibenzofuran Dibenzofuran (C12H8O)
dibenzothiophene Dibenzothiophene Dibenzothiophene (C12H8S), a polycyclic aromatic hydrocarbon (PAH)
dibromochloromethane Dibromochloromethane Dibromochloromethane (CHBr2Cl)
dieldrin Dieldrin Dieldrin (C12H8Cl6O)
diethylPhthalate Diethyl phthalate Diethyl phthalate (C12H14O4)
diethyleneGlycol Diethylene glycol Diethylene glycol (C4H10O3)
diisopropylEther Diisopropyl Ether Diisopropyl Ether (C6H14O)
dimethylPhthalate Dimethyl Phthalate Dimethyl Phthalate (C10H10O4)
dimethylphenanthrene Dimethylphenanthrene Dimethylphenanthrene (C16H14)
dinoflagellates Dinoflagellates The chlorophyll a concentration contributed by Dinoflagellates
dinoseb Dinoseb Dinoseb (C10H12N2O5)
discharge Discharge Discharge
distance Distance Distance measured from a sensor to a target object such as the surface of a water body or snow surface.
distichlisSpicataCoverage Distichlis spicata Coverage Areal coverage of the plant Distichlis spicata
disulfoton Disulfoton Disulfoton (C8H19O2PS3)
DNADamageOliveDailMoment DNA damage, olive tail moment In a single cell gel electrophoresis assay (comet assay), olive tail moment is the product of the percentage of DNA in the tail and the distance between the intesity centroids of the head and tail along the x-axis (Olive, et al., 1990)
DNADamagePercentTailDNA DNA damage, percent tail DNA In a single cell gel electrophoresis assay (comet assay), percent tail DNA is the ratio of fluorescent intensity of the tail over the total fluorescent intensity of the head (nuclear core) and tail multiplied by 100.
DNADamageTailLength DNA damage, tail length In a single cell gel electrophoresis assay (comet assay), tail length is the distance of DNA migration from the body of the nuclear core
e_coli E-coli Escherichia coli
electricCurrent Electric Current A flow of electric charge
electricEnergy Electric Energy Electric Energy
electricPower Electric Power Electric Power
electricalConductivity Electrical conductivity Electrical conductivity
endOfFile End of file A categorical variable marking the end of a data file. This is used for quality control.
endosulfan_I_Alpha Endosulfan I (alpha) Endosulfan I (alpha) (C9H6Cl6O3S)
endosulfan_II_Beta Endosulfan II (beta) Endosulfan II (beta) (C9H6Cl6O3S)
endosulfanSulfate Endosulfan Sulfate Endosulfan Sulfate (C9H6Cl6O4S)
endrin Endrin Endrin (C12H8Cl6O)
endrinAldehyde Endrin aldehyde Endrin aldehyde (C12H8Cl6O)
endrinKetone Endrin Ketone Endrin Ketone (C12H9Cl5O)
enterococci Enterococci Enterococcal bacteria
ethane Ethane Ethane
ethaneDissolved Ethane, dissolved Dissolved Ethane (C2H6)
ethanol Ethanol Ethanol (C2H6O)
ethoxyresorufin_O_DeethylaseActivity Ethoxyresorufin O-deethylase, activity Ethoxyresorufin O-deethylase (EROD) activity
ethylTert_ButylEther Ethyl tert-Butyl Ether Ethyl tert-Butyl Ether (C6H14O)
ethylbenzene Ethylbenzene Ethylbenzene (C8H10)
ethylene Ethylene Ethylene (C2H4)
ethyleneGlycol Ethylene glycol Ethlene Glycol (C2H4(OH)2)
ethyleneDissolved Ethylene, dissolved Dissolved ethylene
ethyne Ethyne Ethyne (C2H2)
evaporation Evaporation Evaporation
evapotranspiration Evapotranspiration Evapotranspiration
evapotranspirationPotential Evapotranspiration, potential The amount of water that could be evaporated and transpired if there was sufficient water available.
fishDetections Fish detections The number of fish identified by the detection equipment
flashMemoryErrorCount Flash memory error count A counter which counts the number of datalogger flash memory errors
fluoranthene Fluoranthene Fluoranthene (C16H10), a polycyclic aromatic hydrocarbon (PAH)
fluorene Fluorene Fluorene (C13H10), a polycyclic aromatic hydrocarbon (PAH)
fluoride Fluoride Fluoride (F-)
fluorideDissolved Fluoride, dissolved Dissolved Fluoride (F-)
fluorine Fluorine Fluorine (F2)
fluorineDissolved Fluorine, dissolved Dissolved Fluorine (F2)
formate Formate Formate
formicAcid Formic acid Formic acid (CH2O2)
frequencyOfRotation Frequency of Rotation Number of rotations within a time period
frictionVelocity Friction velocity Friction velocity
gageHeight Gage height Water level with regard to an arbitrary gage datum (also see Water depth for comparison)
globalRadiation Global Radiation Solar radiation, direct and diffuse, received from a solid angle of 2p steradians on a horizontal surface. Source: World Meteorological Organization, Meteoterm
glutaraldehyde Glutaraldehyde Glutaraldehyde (C5H8O2)
glutathione_S_TransferaseActivity Glutathione S-transferase, activity Glutathione S-transferase (GST) activity
glutathione_S_TransferaseDeltaCycleThreshold Glutathione S-transferase, delta cycle threshold Delta cycle threshold for glutathione S-transferase (gst). Cycle threshold is the PCR cycle number at which the fluorescent signal of the gene being amplified crosses the set threshold. Delta cycle threshold for gst is the difference between the cycle threshold (Ct) of gst gene expression and the cycle threshold (Ct) for the gene expression of the reference gene (e.g., beta-actin).
grossAlphaRadionuclides Gross alpha radionuclides Gross Alpha Radionuclides
grossBetaRadionuclides Gross beta radionuclides Gross Beta Radionuclides
groundHeatFlux Ground heat flux Ground heat flux
groundwaterDepth Groundwater Depth Groundwater depth is the distance between the water surface and the ground surface at a specific location specified by the site location and offset.
hardnessCalcium Hardness, Calcium Hardness of calcium
hardnessCarbonate Hardness, carbonate Carbonate hardness also known as temporary hardness
hardnessMagnesium Hardness, Magnesium Hardness of magnesium
hardnessNonCarbonate Hardness, non-carbonate Non-carbonate hardness
hardnessTotal Hardness, total Total hardness
heatIndex Heat index The combination effect of heat and humidity on the temperature felt by people.
heightAboveSeaFloor height, above sea floor Vertical distance from the sea floor to a point.
helium Helium Helium
heliumDissolved Helium, dissolved Dissolved Helium (He)
heptachlor Heptachlor Heptachlor (C10H5Cl7)
heptachlorEpoxide Heptachlor epoxide Heptachlor epoxide (C10H5Cl7O)
hexachlorobenzene Hexachlorobenzene Hexachlorobenzene (C6Cl6)
hexachlorobutadiene Hexachlorobutadiene Hexachlorobutadiene (C4Cl6)
hexachlorocyclopentadiene Hexachlorocyclopentadiene Hexachlorocyclopentadiene (C5Cl6)
hexachloroethane Hexachloroethane Hexachloroethane (C2Cl6)
hexane Hexane Hexane
hostConnected Host connected A categorical variable marking the attachment of a host computer to a logger. This is used for quality control.
hydrogen Hydrogen Hydrogen
hydrogenSulfide Hydrogen sulfide Hydrogen sulfide (H2S)
hydrogenDissolved Hydrogen, dissolved Dissolved Hydrogen
hydrogen_2_StableIsotopeRatioDelta Hydrogen-2, stable isotope ratio delta Difference in the 2H:1H ratio between the sample and standard
imaginaryDielectricConstant Imaginary dielectric constant Soil reponse of a reflected standing electromagnetic wave of a particular frequency which is related to the dissipation (or loss) of energy within the medium. This is the imaginary portion of the complex dielectric constant.
indeno_1_2_3_cd_Pyrene Indeno(1,2,3-cd)pyrene Indeno(1,2,3-cd)pyrene (C22H12)
indicator Indicator Binary status to indicate the status of an instrument or other piece of equipment.
instrumentStatusCode Instrument status code Code value recorded by instrument indicating some information regarding the status of the instrument
intercept Intercept The point at which one of the variables in a function equals 0.
iodideDissolved Iodide, dissolved Dissolved Iodide (I-)
Iron Iron Iron is a chemical element with symbol Fe (from Latin: ferrum) and atomic number 26. It is a metal in the first transition series.
ironSulfide Iron sulfide Iron sulfide (FeS2)
ironDissolved Iron, dissolved Dissolved Iron (Fe)
ironFerric Iron, ferric Ferric Iron (Fe+3)
ironFerrous Iron, ferrous Ferrous Iron (Fe+2)
ironParticulate Iron, particulate Particulate iron (Fe) in suspension
ironTotal Iron, total Total Iron (Fe)
isobutane Isobutane Isobutane
isobutyricAcid Isobutyric acid Isobutyric acid (C4H8O2)
isopentane Isopentane Isopentane
isophorone Isophorone Isophorone (C9H14O)
isopropylAlcohol Isopropyl alcohol Isopropyl alcohol (C3H8O)
isopropylbenzene Isopropylbenzene Isopropylbenzene (C9H12)
ivaFrutescenscoverage Iva frutescens coverage Areal coverage of the plant Iva frutescens
lacticAcid Lactic Acid Lactic Acid (C3H6O3)
latentHeatFlux Latent heat flux Latent Heat Flux
latitude Latitude Latitude as a variable measurement or observation (Spatial reference to be designated in methods). This is distinct from the latitude of a site which is a site attribute.
leadDissolved Lead, dissolved Dissolved Lead (Pb). For chemical terms, dissolved indicates a filtered sample
leadDistributionCoefficient Lead, distribution coefficient Ratio of concentrations of lead in two phases in equilibrium with each other. Phases must be specified.
leadParticulate Lead, particulate Particulate lead (Pb) in suspension
leadTotal Lead, total Total Lead (Pb). For chemical terms, total indicates an unfiltered sample.
leafWetness Leaf wetness The effect of moisture settling on the surface of a leaf as a result of either condensation or rainfall.
lightAttenuationCoefficient Light attenuation coefficient Light attenuation coefficient
limoniumNashiiCoverage Limonium nashii Coverage Areal coverage of the plant Limonium nashii
lithiumDissolved Lithium, dissolved Dissolved Lithium (Li). For chemical terms, dissolved indicates a filtered sample.
lithiumTotal Lithium, total Total Lithium (Li). For chemical terms, total indicates an unfiltered sample.
liverMass Liver, mass Mass of the sample of liver tissue used for analyses
loggerStopped Logger stopped A categorical variable indicating that a logger was told to stop recording data. This is used for quality control.
longitude Longitude Longitude as a variable measurement or observation (Spatial reference to be designated in methods). This is distinct from the longitude of a site which is a site attribute.
lowBatteryCount Low battery count A counter of the number of times the battery voltage dropped below a minimum threshold
LSI LSI Langelier Saturation Index is an indicator of the degree of saturation of water with respect to calcium carbonate
luminousFlux Luminous Flux A measure of the total amount of visible light present
lyciumCarolinianumCoverage Lycium carolinianum Coverage Areal coverage of the plant Lycium carolinianum
magnesium Magnesium Magnesium is a chemical element with symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (Group 2, or alkaline earth metals) of the periodic table: they each have the same electron configuration in their outer electron shell producing a similar crystal structure.
magnesiumDissolved Magnesium, dissolved Dissolved Magnesium (Mg)
magnesiumTotal Magnesium, total Total Magnesium (Mg)
malathion Malathion Butanedioic acid, [(dimethoxyphosphinothioyl)thio]-, diethyl ester (C10H19O6PS2)
manganese Manganese Manganese is a chemical element with symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in combination with iron, and in many minerals. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels.
manganeseDissolved Manganese, dissolved Dissolved Manganese (Mn)
manganeseParticulate Manganese, particulate Particulate manganese (Mn) in suspension
manganeseTotal Manganese, total Total manganese (Mn). "Total" indicates was measured on a whole water (unfiltered) sample.
mass Mass Mass is a property of a physical body. It is generally a measure of an object's resistance to changing its state of motion when a force is applied.
mercuryDissolved Mercury, dissolved Dissolved Mercury (Hg). For chemical terms, dissolved indicates a filtered sample.
mercuryTotal Mercury, total Total Mercury (Hg). For chemical terms, total represents an unfiltered sample.
methane Methane Methane (CH4)
methaneDissolved Methane, dissolved Dissolved Methane (CH4)
methanol Methanol Methanol (CH3OH)
methoxychlor Methoxychlor Methoxychlor (C16H15Cl3O2)
methylTert_ButylEther_MTBE Methyl tert-butyl ether (MTBE) Methyl tert-butyl ether (MTBE) (C5H12O)
methylchrysene Methylchrysene Methylchrysene (C19H14)
methyleneBlueActiveSubstances Methylene blue active substances Methylene Blue Active Substances (MBAS)
methyleneChloride_Dichloromethane Methylene chloride (Dichloromethane) Methylene chloride (Dichloromethane) (CH2Cl2)
methylfluoranthene Methylfluoranthene Methylfluoranthene (C17H12)
methylfluorene Methylfluorene Methylfluorene (C14H12)
methylmercury Methylmercury Methylmercury (CH3Hg)
methylpyrene Methylpyrene Methylpyrene (C17H12)
mevinphos Mevinphos Mevinphos (C7H13O6P)
microsomalProtein Microsomal protein The total protein concentration within the microsomal fraction of cells. Microsomes refer to vesicle-like artifacts reformed from pieces of endoplasmic reticulum when eukaryotic cells are broken up in a laboratory.
molbydenumDissolved Molbydenum, dissolved Dissolved Molbydenum (Mo). For chemical terms, dissolved indicates a filtered sample.
molybdenumTotal Molybdenum, total total Molybdenum (Mo). For chemical terms, total represents an unfiltered sample.
momentumFlux Momentum flux Momentum flux
monanthochloeLittoralisCoverage Monanthochloe littoralis Coverage Areal coverage of the plant Monanthochloe littoralis
NAlbuminoid N, albuminoid Albuminoid Nitrogen
n_Alkane_C15 n-alkane, C15 C15 alkane, normal (i.e. straight-chain) isomer, common name: n-Pentadecane, formula : C15H32
n_Alkane_C16 n-alkane, C16 C16 alkane, normal (i.e. straight-chain) isomer, common name: n-Hexadecane, formula: C16H34. Synonym: cetane
n_Alkane_C17 n-alkane, C17 C17 alkane, normal (i.e. straight-chain) isomer, common name: n-Heptadecane, formula : C17H36
n_Alkane_C18 n-alkane, C18 C18 alkane, normal (i.e. straight-chain) isomer, common name: n-Octadecane, formula : C18H38
n_Alkane_C19 n-alkane, C19 C19 alkane, normal (i.e. straight-chain) isomer, common name: n-Nonadecane, formula : C19H40
n_Alkane_C20 n-alkane, C20 C20 alkane, normal (i.e. straight-chain) isomer, common name: n-Icosane, formula : C20H42. Synonyms: didecyl, eicosane.
n_Alkane_C21 n-alkane, C21 C21 alkane, normal (i.e. straight-chain) isomer, common name: n-Henicosane, formula : C21H44.
n_Alkane_C22 n-alkane, C22 C22 alkane, normal (i.e. straight-chain) isomer, common name: n-Docosane, formula : C22H46
n_Alkane_C23 n-alkane, C23 C23 alkane, normal (i.e. straight-chain) isomer, common name: n-Tricosane, formula : C23H48
n_Alkane_C24 n-alkane, C24 C24 alkane, normal (i.e. straight-chain) isomer, common name: n-Tetracosane, formula : C24H50
n_Alkane_C25 n-alkane, C25 C25 alkane, normal (i.e. straight-chain) isomer, common name: n-Pentacosane, formula : C25H52
n_Alkane_C26 n-alkane, C26 C26 alkane, normal (i.e. straight-chain) isomer, common name: n-Hexacosane, formula : C26H54, synonyms: cerane, hexeikosane
n_Alkane_C27 n-alkane, C27 C27 alkane, normal (i.e. straight-chain) isomer, common name: n-Heptacosane, formula : C27H56
n_Alkane_C28 n-alkane, C28 C28 alkane, normal (i.e. straight-chain) isomer, common name: n-Octacosane, formula : C28H58
n_Alkane_C29 n-alkane, C29 C29 alkane, normal (i.e. straight-chain) isomer, common name: n-Nonacosane, formula : C29H60
n_Alkane_C30 n-alkane, C30 C30 alkane, normal (i.e. straight-chain) isomer, common name: n-Triacontane, formula : C30H62
n_Alkane_C31 n-alkane, C31 C31 alkane,normal (i.e. straight-chain) isomer, common name: n-Hentriacontane, formula : C31H64, Synonym: untriacontane
n_Alkane_C32 n-alkane, C32 C32 alkane, normal (i.e. straight-chain) isomer, common name: n-Dotriacontane, formula : C32H66, Synonym: dicetyl
n_Alkane_C33 n-alkane, C33 C33 alkane, (i.e. straight-chain) isomer, common name: n-Tritriacontane, formula : C33H68
n_AlkaneLongChain n-alkane, long-chain long-chain alkanes, normal (i.e. straight chain) isomer (isomer range of alkanes measured should be specified)
n_AlkaneShortChain n-alkane, short-chain short-chain alkanes, normal (i.e. straight chain) isomer (isomer range of alkanes measured should be specified)
n_AlkaneTotal n-alkane, total Total alkane, normal (i.e. straight chain) isomer (isomer range of alkanes measured should be specified)
N_Nitrosodi_n_Butylamine N-Nitrosodi-n-butylamine N-Nitrosodi-n-butylamine (C8H18N2O)
N_Nitrosodi_n_Propylamine N-Nitrosodi-n-propylamine N-Nitrosodi-n-propylamine (C6H14N2O)
N_Nitrosodiethylamine N-Nitrosodiethylamine N-Nitrosodiethylamine (C4H10N2O)
N_Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine (C2H6N2O)
N_Nitrosodiphenylamine N-Nitrosodiphenylamine N-Nitrosodiphenylamine (C12H10N2O)
N_Nitrosomethylethylamine N-Nitrosomethylethylamine N-Nitrosomethylethylamine (C3H8N2O)
naphthalene Naphthalene Naphthalene (C10H8)
NDVI NDVI Normalized difference vegetation index
netHeatFlux Net heat flux Outgoing rate of heat energy transfer minus the incoming rate of heat energy transfer through a given area
nickelDissolved Nickel, dissolved Dissolved Nickel (Ni)
nickelDistributionCoefficient Nickel, distribution coefficient Ratio of concentrations of nickel in two phases in equilibrium with each other. Phases must be specified.
nickelParticulate Nickel, particulate Particulate nickel (Ni) in suspension
nickelTotal Nickel, total Total Nickel (Ni). "Total" indicates was measured on a whole water (unfiltered) sample.
nitrobenzene Nitrobenzene Nitrobenzene (C6H5NO2)
nitrogenDissolved_Free_Ionized_Ammonia_NH3_NH4 Nitrogen, dissolved (free+ionized) Ammonia (NH3) + (NH4) Dissolved (free+ionized) Ammonia
nitrogenDissolvedInorganic Nitrogen, dissolved inorganic Dissolved inorganic nitrogen
nitrogenDissolvedKjeldahl Nitrogen, dissolved Kjeldahl Dissolved Kjeldahl (organic nitrogen + ammonia (NH3) + ammonium (NH4))nitrogen
nitrogenDissolvedNitrate_NO3 Nitrogen, dissolved nitrate (NO3) Dissolved nitrate (NO3) nitrogen
nitrogenDissolvedNitrite_NO2 Nitrogen, dissolved nitrite (NO2) Dissolved nitrite (NO2) nitrogen
nitrogenDissolvedNitrite_NO2_Nitrate_NO3 Nitrogen, dissolved nitrite (NO2) + nitrate (NO3) Dissolved nitrite (NO2) + nitrate (NO3) nitrogen
nitrogenDissolvedOrganic Nitrogen, dissolved organic Dissolved Organic Nitrogen
nitrogenGas Nitrogen, gas Gaseous Nitrogen (N2)
nitrogenInorganic Nitrogen, inorganic Total Inorganic Nitrogen
nitrogen_NH3 Nitrogen, NH3 Free Ammonia (NH3)
nitrogenNH3_NH4 Nitrogen, NH3 + NH4 Total (free+ionized) Ammonia
nitrogen_NH4 Nitrogen, NH4 Ammonium (NH4)
nitrogenNitrate_NO3 Nitrogen, nitrate (NO3) Nitrate (NO3) Nitrogen
nitrogenNitrite_NO2 Nitrogen, nitrite (NO2) Nitrite (NO2) Nitrogen
nitrogenNitrite_NO2_Nitrate_NO3 Nitrogen, nitrite (NO2) + nitrate (NO3) Nitrite (NO2) + Nitrate (NO3) Nitrogen
nitrogenOrganic Nitrogen, organic Organic Nitrogen
nitrogenOrganicKjeldahl Nitrogen, organic kjeldahl Organic Kjeldahl (organic nitrogen + ammonia (NH3) + ammonium (NH4)) nitrogen
nitrogenParticulateOrganic Nitrogen, particulate organic Particulate Organic Nitrogen
nitrogenTotal Nitrogen, total Total Nitrogen (NO3+NO2+NH4+NH3+Organic)
nitrogenTotalDissolved Nitrogen, total dissolved Total dissolved nitrogen
nitrogenTotalKjeldahl Nitrogen, total kjeldahl Total Kjeldahl Nitrogen (Ammonia+Organic)
nitrogenTotalNitrite Nitrogen, total nitrite Total nitrite (NO2)
nitrogenTotalOrganic Nitrogen, total organic Total (dissolved + particulate) organic nitrogen
nitrogen_15 Nitrogen-15 15 Nitrogen, Delta Nitrogen
nitrogen_15_StableIsotopeRatioDelta Nitrogen-15, stable isotope ratio delta Difference in the 15N:14N ratio between the sample and standard (del N 15)
nitrousOxide Nitrous oxide Nitrous oxide (N2O)
noVegetationCoverage No vegetation coverage Areal coverage of no vegetation
o_Xylene o-Xylene o-Xylene (C8H10)
odor Odor Odor
offset Offset Constant to be added as an offset to a variable of interest.
oilAndGrease Oil and grease Oil and grease
organicMatter Organic matter The organic matter component of a complex material.
orientation Orientation Azimuth orientation of sensor platform
osmoticPressure Osmotic pressure Osmotic pressure
oxygen Oxygen Oxygen
oxygenFlux Oxygen flux Oxygen (O2) flux
oxygenUptake Oxygen uptake Consumption of oxygen by biological and/or chemical processes
oxygenDissolved Oxygen, dissolved Dissolved oxygen
oxygenDissolvedPercentOfSaturation Oxygen, dissolved percent of saturation Dissolved oxygen, percent saturation
oxygenDissolvedTransducerSignal Oxygen, dissolved, transducer signal Dissolved oxygen, raw data from sensor
oxygen_18 Oxygen-18 18 O, Delta O
oxygen_18_StableIsotopeRatioDelta Oxygen-18, stable isotope ratio delta Difference in the 18O:16O ratio between the sample and standard
ozone Ozone Ozone (O3)
parameter Parameter Parameter related to a hydrologic process. An example usage would be for a starge-discharge relation parameter.
parathion_Ethyl Parathion-ethyl Parathion-ethyl (C10H14NO5PS)
pentachlorobenzene Pentachlorobenzene Pentachlorobenzene (C6HCl5)
pentachlorophenol Pentachlorophenol Pentachlorophenol (C6HCl5O)
pentane Pentane Pentane
percentFullScale Percent full scale The percent of full scale for an instrument
peridinin Peridinin The phytoplankton pigment Peridinin
permethrin Permethrin Permethrin (C21H20Cl2O3)
permittivity Permittivity Permittivity is a physical quantity that describes how an electric field affects, and is affected by a dielectric medium, and is determined by the ability of a material to polarize in response to the field, and thereby reduce the total electric field inside the material. Thus, permittivity relates to a material's ability to transmit (or "permit") an electric field.
perylene Perylene Perylene (C20H12), a polycyclic aromatic hydrocarbon (PAH)
petroleumHydrocarbonTotal Petroleum hydrocarbon, total Total petroleum hydrocarbon
pH pH pH is the measure of the acidity or alkalinity of a solution. pH is formally a measure of the activity of dissolved hydrogen ions (H+). Solutions in which the concentration of H+ exceeds that of OH- have a pH value lower than 7.0 and are known as acids.
phenanthrene Phenanthrene Phenanthrene (C14H10), a polycyclic aromatic hydrocarbon (PAH)
phenol Phenol Phenol (C6H5OH)
phenolicsTotal Phenolics, total Total Phenolics
pheophytin Pheophytin Pheophytin (Chlorophyll which has lost the central Mg ion) is a degradation product of Chlorophyll
phorate Phorate Phorate (C7H17O2PS3)
phosphorodithioicAcid Phosphorodithioic acid Phosphorodithioic acid (C10N12N3O3PS2)
phosphorusDissolved Phosphorus, dissolved Dissolved Phosphorus (P)
phosphorusDissolvedOrganic Phosphorus, dissolved organic Dissolved organic phosphorus
phosphorusInorganic Phosphorus, inorganic Inorganic Phosphorus
phosphorusOrganic Phosphorus, organic Organic Phosphorus
phosphorusOrthophosphate Phosphorus, orthophosphate Orthophosphate Phosphorus
phosphorusOrthophosphateDissolved Phosphorus, orthophosphate dissolved Dissolved orthophosphate phosphorus
phosphorusOrthophosphateTotal Phosphorus, orthophosphate total Total orthophosphate phosphorus
phosphorusParticulate Phosphorus, particulate Particulate phosphorus
phosphorusParticulateOrganic Phosphorus, particulate organic Particulate organic phosphorus in suspension
phosphorusPhosphate_PO4 Phosphorus, phosphate (PO4) Phosphate phosphorus
hosphorusPhosphateFlux Phosphorus, phosphate flux Phosphate (PO4) flux
phosphorusPolyphosphate Phosphorus, polyphosphate Polyphosphate Phosphorus
phosphorusTotal Phosphorus, total Total Phosphorus
phosphorusTotalDissolved Phosphorus, total dissolved Total dissolved phosphorus
phytoplankton Phytoplankton Measurement of phytoplankton with no differentiation between species
piperonylButoxide Piperonyl Butoxide Piperonyl Butoxide (C19H30O5)
polycyclicAromaticHydrocarbonAlkyl Polycyclic aromatic hydrocarbon, alkyl Polycyclic aromatic hydrocarbon (PAH) having at least one alkyl sidechain (methyl, ethyl or other alkyl group) attached to the aromatic ring structure
polycyclicAromaticHydrocarbonParent Polycyclic aromatic hydrocarbon, parent Unsubstituted (i.e., non-alkylated) polycyclic aromatic hydrocarbon (PAH)
polycyclicAromaticHydrocarbonTotal Polycyclic aromatic hydrocarbon, total total polycyclic aromatic hydrocarbon (PAH), also known as poly-aromatic hydrocarbons or polynuclear aromatic hydrocarbons
porosity Porosity Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0 and 100%.
position Position Position of an element that interacts with water such as reservoir gates
potassiumDissolved Potassium, dissolved Dissolved Potassium (K)
potassiumTotal Potassium, total Total Potassium (K)
precipitation Precipitation Precipitation such as rainfall. Should not be confused with settling.
pressureAbsolute Pressure, absolute Pressure
pressureGauge Pressure, gauge Pressure relative to the local atmospheric or ambient pressure
primaryProductivity Primary productivity Primary Productivity
primaryProductivityGross Primary productivity, gross Rate at which an ecosystem accumulates energy by fixation of sunlight, including that consumed by the ecosystem.
programSignature Program signature A unique data recorder program identifier which is useful for knowing when the source code in the data recorder has been modified.
pronamide Pronamide Pronamide (C12H11Cl2NO)
propane Propane Propane
propaneDissolved Propane, dissolved Dissolved Propane (C3H8)
propanoicAcid Propanoic acid Propanoic acid (C3H6O2)
propyleneGlycol Propylene glycol Propylene glycol (C3H8O2)
pyrene Pyrene Pyrene (C16H10), a polycyclic aromatic hydrocarbon (PAH)
pyridine Pyridine Pyridine (C5H5N)
radiationIncoming Radiation, incoming Incoming radiation
radiationIncomingLongwave Radiation, incoming longwave Incoming Longwave Radiation
radiationIncomingPAR Radiation, incoming PAR Incoming Photosynthetically-Active Radiation
radiationIncomingShortwave Radiation, incoming shortwave Incoming Shortwave Radiation
radiationIncomingUV_A Radiation, incoming UV-A Incoming Ultraviolet A Radiation
radiationIncomingUV_B Radiation, incoming UV-B Incoming Ultraviolet B Radiation
radiationNet Radiation, net Net Radiation
radiationNetLongwave Radiation, net longwave Net Longwave Radiation
radiationNetPAR Radiation, net PAR Net Photosynthetically-Active Radiation
radiationNetShortwave Radiation, net shortwave Net Shortwave radiation
radiationOutgoingLongwave Radiation, outgoing longwave Outgoing Longwave Radiation
radiationOutgoingPAR Radiation, outgoing PAR Outgoing Photosynthetically-Active Radiation
radiationOutgoingShortwave Radiation, outgoing shortwave Outgoing Shortwave Radiation
radiationTotalIncoming Radiation, total incoming Total amount of incoming radiation from all frequencies
radiationTotalOutgoing Radiation, total outgoing Total amount of outgoing radiation from all frequencies
radiationTotalShortwave Radiation, total shortwave Total Shortwave Radiation
radium_226 Radium-226 An isotope of radium in the uranium-238 decay series
radium_228 Radium-228 An isotope of radium in the thorium-232 decay series
radon_222 Radon-222 An isotope of radon
rainfallRate Rainfall rate A measure of the intensity of rainfall, calculated as the depth of water to fall over a given time period if the intensity were to remain constant over that time interval (in/hr, mm/hr, etc)
realDielectricConstant Real dielectric constant Soil reponse of a reflected standing electromagnetic wave of a particular frequency which is related to the stored energy within the medium. This is the real portion of the complex dielectric constant.
receivedSignalStrenghtIndication Received signal strength indication In telecommunications, received signal strength indicator (RSSI) is a measurement of the power present in a received radio signal.
recorderCode Recorder code A code used to identifier a data recorder.
reductionPotential Reduction potential Oxidation-reduction potential
relativeHumidity Relative humidity Relative humidity
remark Remark Manually added comment field to provide additional information about a particular record.
reservoirStorage Reservoir storage Reservoir water volume
respirationEcosystem Respiration, ecosystem Gross carbon dioxide production by all organisms in an ecosystem. Ecosystem respiration is the sum of all respiration occurring by the living organisms in a specific ecosystem.
respirationNet Respiration, net Net respiration
retene Retene Retene (C18H18), a polycyclic aromatic hydrocarbon (PAH), also known as methyl isopropyl phenanthrene or 1-methyl-7-isopropyl phenanthrene
rheniumTotal Rhenium, total Total Rhenium (Re)
ruthenium_106 Ruthenium-106 The most stable isotope of ruthenium with a half life of 373.59 days.
salicorniaBigeloviiCoverage Salicornia bigelovii coverage Areal coverage of the plant Salicornia bigelovii
salicorniaVirginicaCoverage Salicornia virginica coverage Areal coverage of the plant Salicornia virginica
salinity Salinity Salinity
Sand Sand USDA particle size distribution category. 0.5 to 2 mm diameter fine earth particles.
secchiDepth Secchi depth Secchi depth
sedimentPassingSieve Sediment, passing sieve The amount of sediment passing a sieve in a gradation test
sedimentRetainedOnSieve Sediment, retained on sieve The amount of sediment retained on a sieve in a gradation test
sedimentSuspended Sediment, suspended Suspended Sediment
seleniumDissolved Selenium, dissolved Dissolved selenium (Se). For chemical terms, dissolved indicates a filtered sample.
seleniumDistributionCoefficient Selenium, distribution coefficient Ratio of concentrations of selenium in two phases in equilibrium with each other. Phases must be specified.
seleniumParticulate Selenium, particulate Particulate selenium (Se) in suspension
seleniumTotal Selenium, total Total Selenium (Se). For chemical terms, total indicates an unfiltered sample
sensibleHeatFlux Sensible heat flux Sensible Heat Flux
sequenceNumber Sequence number A counter of events in a sequence
shannonDiversityIndex Shannon diversity index A diversity index that is based on the number of taxa, and the proportion of individuals in each taxa relative to the entire community, evaluated as entropy. Also known as Shannon-Weaver diversity index, the Shannon-Wiener index, the Shannon index and the Shannon entropy.
shannonEvennessIndex Shannon evenness index A dimensionless diversity index, calculated as a ratio of the Shannon diversity index over its maximum. Also known as the Shannon Weaver evenness index
sigma_t Sigma-t Density of seawater calculated with in situ salinity and temperature, but pressure equal to zero, rather than the in situ pressure, and 1000 kg/m^3 is subtracted. Defined as (S,T)-1000 kg m-3, where (S,T) is the density of a sample of seawater at temperature T and salinity S, measured in kg m-3, at standard atmospheric pressure.
signalToNoiseRatio Signal-to-noise ratio Signal-to-noise ratio (often abbreviated SNR or S/N) is defined as the ratio of a signal power to the noise power corrupting the signal. The higher the ratio, the less obtrusive the background noise is.
silica Silica Silica (SiO2)
silicaDissolved Silica, dissolved Dissolved silica (SiO2)
silicate Silicate Silicate. Chemical compound containing silicon, oxygen, and one or more metals, e.g., aluminum, barium, beryllium, calcium, iron, magnesium, manganese, potassium, sodium, or zirconium.
silicicAcid Silicic acid Hydrated silica disolved in water
silicicAcidFlux Silicic acid flux Silicate acid (H4SiO4) flux
silicon Silicon Silicon (Si)
siliconDissolved Silicon, dissolved Dissolved Silicon (Si)
Silt Silt USDA particle size distribution category. 0.002 to 0.5 mm diameter fine earth particles.
silverDissolved Silver, dissolved Dissolved silver (Ag). For chemical terms, dissolved indicates a filtered sample.
silverTotal Silver, total Total Silver (Ag). For chemical terms, total represents an unfiltered sample.
slope Slope Ratio between two variables in a linear relationship.
snowDepth Snow depth Snow depth
snowWaterEquivalent Snow water equivalent The depth of water if a snow cover is completely melted, expressed in units of depth, on a corresponding horizontal surface area.
sodiumAdsorptionRatio Sodium adsorption ratio Sodium adsorption ratio
sodiumPlusPotassium Sodium plus potassium Sodium plus potassium
sodiumDissolved Sodium, dissolved Dissolved Sodium (Na)
sodiumFractionOfCations Sodium, fraction of cations Sodium, fraction of cations
sodiumTotal Sodium, total Total Sodium (Na)
solidsRixedDissolved Solids, fixed dissolved Fixed Dissolved Solids
solidsFixedSuspended Solids, fixed suspended Fixed Suspended Solids
solidsTotal Solids, total Total Solids
solidsTotalDissolved Solids, total dissolved Total Dissolved Solids
solidsTotalFixed Solids, total fixed Total Fixed Solids
solidsTotalSuspended Solids, total suspended Total Suspended Solids
solidsTotalVolatile Solids, total volatile Total Volatile Solids
solidsVolatileDissolved Solids, volatile dissolved Volatile Dissolved Solids
solidsVolatileSuspended Solids, volatile suspended Volatile Suspended Solids
spartinaAlternifloraCoverage Spartina alterniflora coverage Areal coverage of the plant Spartina alterniflora
spartinaSpartineaCoverage Spartina spartinea coverage Areal coverage of the plant Spartina spartinea
specificConductance Specific conductance Specific conductance
speedOfSound Speed of sound Speed of sound in the medium sampled
squalene Squalene Squalene (C30H50)
streamflow Streamflow The volume of water flowing past a fixed point. Equivalent to discharge
streptococciFecal Streptococci, fecal Fecal Streptococci
strontiumDissolved Strontium, dissolved Dissolved Strontium (Sr)
strontiumTotal Strontium, total Total Strontium (Sr)
styrene Styrene Styrene (C8H8)
suaedaLinearisCoverage Suaeda linearis coverage Areal coverage of the plant Suaeda linearis
suaedaMaritimaCoverage Suaeda maritima coverage Areal coverage of the plant Suaeda maritima
sulfateDissolved Sulfate, dissolved Dissolved Sulfate (SO4)
sulfateTotal Sulfate, total Total Sulfate (SO4)
sulfideDissolved Sulfide, dissolved Dissolved Sulfide
sulfideTotal Sulfide, total Total sulfide
sulfur Sulfur Sulfur (S)
sulfurDioxide Sulfur dioxide Sulfur dioxide (SO2)
sulfurDissolved Sulfur, dissolved Dissolved Sulfur (S)
sulfurOrganic Sulfur, organic Organic Sulfur
sulfurPyritic Sulfur, pyritic Pyritic Sulfur
sunshineDuration Sunshine duration Sunshine duration
superoxideDismutaseActivity Superoxide dismutase, activity Superoxide dismutase (SOD) activity
superoxideDismutaseDeltaCycleThreshold Superoxide dismutase, delta cycle threshold Delta cycle threshold for superoxide dismutase (sod). Cycle threshold is the PCR cycle number at which the fluorescent signal of the gene being amplified crosses the set threshold. Delta cycle threshold for sod is the difference between the cycle threshold (Ct) of sod gene expression and the cycle threshold (Ct) for the gene expression of the reference gene (e.g., beta-actin).
SUVA254 SUVA254 Specific ultraviolet absorbance at 254 nm. Determined by absorbance normalized to DOC concentration.
tableOverrunErrorCount Table overrun error count A counter which counts the number of datalogger table overrun errors
taxaCount Taxa count Count of unique taxa. A taxon (plural: taxa) is a group of one (or more) populations of organism(s), which is judged to be a unit.
TDRWaveformRelativeLength TDR waveform relative length Time domain reflextometry, apparent length divided by probe length. Square root of dielectric
temperature Temperature Temperature
temperatureChange Temperature change temperature change
temperatureDatalogger Temperature, datalogger Temperature, raw data from datalogger
temperatureDewPoint Temperature, dew point Dew point temperature
temperatureInitial Temperature, initial initial temperature before heating
temperatureSensor Temperature, sensor Temperature, raw data from sensor
temperatureTransducerSignal Temperature, transducer signal Temperature, raw data from sensor
terbufos Terbufos Terbufos (C9H21O2PS3)
terpineol Terpineol Terpineol (C10H18O)
tertAmylMethylEther Tert-Amyl Methyl Ether Tert-Amyl Methyl Ether (C6H14O)
tertiaryButylAlcohol Tertiary Butyl Alcohol Tertiary Butyl Alcohol (C4H10O)
tetracene Tetracene Tetracene (C18H12), a polycyclic aromatic hydrocarbon (PAH), also known as naphthacene or benz[b]anthracene
tetrachloroethene Tetrachloroethene Tetrachloroethene (C2Cl4)
tetraethyleneGlycol Tetraethylene glycol Tetraethylene glycol (C8H18O5)
tetrahydrofuran Tetrahydrofuran Tetrahydrofuran (C4H8O)
tetramethylnaphthalene Tetramethylnaphthalene Tetramethylnaphthalene (C10H4(CH3)4), a polycyclic aromatic hydrocarbon (PAH)
thalliumDissolved Thallium, dissolved Dissolved thallium (Tl). "dissolved" indicates measurement was made on a filtered sample.
thalliumDistributionCoefficient Thallium, distribution coefficient Ratio of concentrations of thallium in two phases in equilibrium with each other. Phases must be specified.
thalliumParticulate Thallium, particulate Particulate thallium (Tl) in suspension
thalliumTotal Thallium, total Total thallium (Tl). "Total" indicates was measured on a whole water (unfiltered) sample.
thorium Thorium Thorium (Th)
thoriumDissolved Thorium, dissolved Dissolved thorium. For chemical terms, dissolved indicates a filtered sample.
thorium_228 Thorium-228 An isotope of thorium in the thorium-232 decay series
thorium_230 Thorium-230 An isotope of thorium in the thorium-232 decay series
thorium_232 Thorium-232 A radioactive isotope of thorium which undergoes alpha decay
threshold Threshold A level above or below which an action is performed.
THSWIndex THSW Index The THSW Index uses temperature, humidity, solar radiation, and wind speed to calculate an apparent temperature.
THWIndex THW Index The THW Index uses temperature, humidity, and wind speed to calculate an apparent temperature.
tideStage Tide stage Tidal stage
timeStamp Time Stamp The time at which a sensor produces output
timeElapsed Time, elapsed Time elapsed since an event occurred
tinDissolved Tin, dissolved Dissolved tin (Sn). "Dissolved " indicates a the measurement was made on a filtered sample.
tinTotal Tin, total Total tin (Sn)."Total" indicates was measured on a whole water (unfiltered) sample.
titanium Titanium Titanium (Ti)
titaniumDissolved Titanium, dissolved Dissolved Titanium
toluene Toluene Toluene (C6H5CH3)
trans_1_2_Dichloroethene trans-1,2-Dichloroethene trans-1,2-Dichloroethene (C2H2Cl2)
trans_1_3_Dichloropropene trans-1,3-Dichloropropene trans-1,3-Dichloropropene (C3H4Cl2)
transientSpeciesCoverage Transient species coverage Areal coverage of transient species
transpiration Transpiration Transpiration
tributoxyethylPhosphate Tributoxyethyl phosphate Tributoxyethyl phosphate (C42H87O13P)
trichloroethene Trichloroethene Trichloroethene (C2HCl3)
triethyleneGlycol Triethylene glycol Triethylene glycol (C6H14O4)
trifluralin Trifluralin Trifluralin (C13H16F3N3O4)
triphenylene Triphenylene Triphenylene (C18H12)
tritium_3H_DeltaTOfH2O Tritium (3H), Delta T of H2O Isotope 3H of water
TSI TSI Carlson Trophic State Index is a measurement of eutrophication based on Secchi depth
turbidity Turbidity Turbidity
uranium Uranium Uranium (U)
uraniumDissolved Uranium, dissolved Dissolved Uranium. For chemical terms, dissolved indicates a filtered sample.
uranium_234 Uranium-234 An isotope of uranium in the uranium-238 decay series
uranium_235 Uranium-235 An isotope of uranium that can sustain fission chain reaction
uranium_238 Uranium-238 Uranium's most common isotope
urea Urea Urea ((NH2)2CO)
ureaFlux Urea flux Urea ((NH2)2CO) flux
vanadiumDissolved Vanadium, dissolved Dissolved vanadium (V). "Dissolved" indicates the measurement was made on a filtered sample.
vanadiumParticulate Vanadium, particulate Particulate vanadium (V) in suspension
vanadiumTotal Vanadium, total Total vanadium (V). "Total" indicates was measured on a whole water (unfiltered) sample.
vaporPressure Vapor pressure The pressure of a vapor in equilibrium with its non-vapor phases
vaporPressureDeficit Vapor pressure deficit The difference between the actual water vapor pressure and the saturation of water vapor pressure at a particular temperature.
velocity Velocity The velocity of a substance, fluid or object
visibility Visibility Visibility
voltage Voltage Voltage or Electrical Potential
volume Volume Volume. To quantify discharge or hydrograph volume or some other volume measurement.
volumetricWaterContent Volumetric water content Volume of liquid water relative to bulk volume. Used for example to quantify soil moisture
watchdogErrorCount Watchdog error count A counter which counts the number of total datalogger watchdog errors
waterColumnEquivalentHeightAbsolute Water column equivalent height, absolute The absolute pressure (combined water + barometric) on a sensor expressed as the height of an equivalent column of water.
waterColumnEquivalentHeightBarometric Water column equivalent height, barometric Barometric pressure expressed as an equivalent height of water over the sensor.
waterContent Water Content Quantity of water contained in a material or organism
waterDepth Water depth Water depth is the distance between the water surface and the bottom of the water body at a specific location specified by the site location and offset.
waterDepthAveraged Water depth, averaged Water depth averaged over a channel cross-section or water body. Averaging method to be specified in methods.
waterFlux Water flux Water Flux
waterLevel Water level Water level relative to datum. The datum may be local or global such as NGVD 1929 and should be specified in the method description for associated data values.
waterPotential Water potential Water potential is the potential energy of water relative to pure free water (e.g. deionized water) in reference conditions. It quantifies the tendency of water to move from one area to another due to osmosis, gravity, mechanical pressure, or matrix effects including surface tension.
waterUseAgriculture Water Use, Agriculture Water pumped for Agriculture
waterUseCommercialIndustrialPower Water Use, Commercial + Industrial + Power Water pumped by commercial, industrial users.
waterUseDomesticWells Water Use, Domestic wells Water pumped by domestic wells; residents and landowners not using public supply. Nonagriculture wells.
waterUsePublicSupply Water Use, Public Supply Water supplied by a public utility
waterUseRecreation Water Use, Recreation Recreational water use, for example golf courses.
waterVaporConcentration Water vapor concentration Water vapor concentration
waterVaporDensity Water vapor density Water vapor density
waveHeight Wave height The height of a surface wave, measured as the difference in elevation between the wave crest and an adjacent trough.
weatherConditions Weather conditions Weather conditions
wellFlowRate Well flow rate Flow rate from well while pumping
wellheadPressure Wellhead pressure The pressure exerted by the fluid at the wellhead or casinghead after the well has been shut off for a period of time, typically 24 hours
windChill Wind chill The effect of wind on the temperature felt on human skin.
windDirection Wind direction Wind direction
windGustDirection Wind gust direction Direction of gusts of wind
windGustSpeed Wind gust speed Speed of gusts of wind
windRun Wind Run The length of flow of air past a point over a time interval. Windspeed times the interval of time.
windSpeed Wind speed Wind speed
windStress Wind stress Drag or trangential force per unit area exerted on a surface by the adjacent layer of moving air
wrackCoverage Wrack coverage Areal coverage of dead vegetation
xylenesTotal Xylenes, total Total xylenes: C6H4(CH3)2
xylosidase Xylosidase An enzyme with system name 4-beta-D-xylan xylohydrolase.[1][2] This enzyme catalyses the following chemical reaction: Hydrolysis of (1->4)-beta-D-xylans, to remove successive D-xylose residues from the non-reducing termini.
zeaxanthin Zeaxanthin The phytoplankton pigment Zeaxanthin
zincDissolved Zinc, dissolved Dissolved Zinc (Zn)
zincDistributionCoefficient Zinc, distribution coefficient Ratio of concentrations of zinc in two phases in equilibrium with each other. Phases must be specified.
zincParticulate Zinc, particulate Particulate zinc (Zn) in suspension
zincTotal Zinc, total Total zinc (Zn)."Total" indicates was measured on a whole water (unfiltered) sample.
zirconDissolved Zircon, dissolved Dissolved Zircon (Zr)
zirconiumDissolved Zirconium, dissolved Dissolved Zirconium
zirconium_95 Zirconium-95 A radioactive isotope of zirconium with a half-life of 63 days
zooplankton Zooplankton Zooplanktonic organisms, non-specific