# data[].attributes.definition
The amount of radiation absorbed by a material

# data[].attributes.definition
The amount of radiation absorbed by a material

# data[].attributes.definition
Absorbance is defined as "the logarithm of the ratio of incident to transmitted radiant power through a sample. Absorbance 260nm describes the absorbance at a wavelength of 260 nm.

# data[].attributes.definition
Absorbance is defined as "the logarithm of the ratio of incident to transmitted radiant power through a sample. Absorbance 280nm describes the absorbance at a wavelength of 280 nm.

# data[].attributes.definition
A ratio shows how many times one number contains another. The absorbance ratio 260/230 is the ratio value between the absorbance value of 260 nm divided by the absorbance value of 230 nm. 
Ratios may be unit-less, as in the case they relate quantities in units of the same dimension, even if their units of measurement are initially different.

# data[].attributes.definition
A ratio shows how many times one number contains another. The absorbance ratio 260/280 is the ratio value between the absorbance value of 260 nm divided by the absorbance value of 280 nm. 
Ratios may be unit-less, as in the case they relate quantities in units of the same dimension, even if their units of measurement are initially different.

# data[].attributes.definition
Absorbance of ultraviolet light at a specified wavelength, typically at 254 or 280 nm for water samples. Not normalized to DOC concentration like variables such as SUVA280.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Absorbance of ultraviolet light at a specified wavelength, typically at 254 or 280 nm for water samples. Not normalized to DOC concentration like variables such as SUVA280.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
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.

# data[].attributes.definition
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.

# data[].attributes.definition
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.

# data[].attributes.definition
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.

# data[].attributes.definition
Adsorbable organically bonded halogens (AOX).

# data[].attributes.definition
The density of air or atmospheric density is the mass per unit volume of Earth's atmosphere.

# data[].attributes.definition
The temperature of the atmosphere expressed against the International Temperature Scale 1990 (ITS-90) standard.

# data[].attributes.provenance
Air temperature entry of the NERC Vocabulary Server (NVS).

# data[].attributes.definition
A velocity is a vector quantity. "Upward" indicates a vector component which is positive when directed upward (negative downward). Upward air velocity is the vertical component of the 3D air velocity vector. The standard name downward_air_velocity may be used for a vector component with the opposite sign convention.

# data[].attributes.definition
The ratio of reflected to incident light.

# data[].attributes.definition
Quotient between "global radiaton" and "global radiation (reflected)"

# data[].attributes.definition
Alluvium is loose, unconsolidated (not cemented together into a solid rock) soil or sediment that has been eroded, reshaped by water in some form, and redeposited in a non-marine setting. Alluvium is typically made up of a variety of materials, including fine particles of silt and clay and larger particles of sand and gravel. When this loose alluvial material is deposited or cemented into a lithological unit, or lithified, it is called an alluvial deposit.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Alluvium is loose, unconsolidated (not cemented together into a solid rock) soil or sediment that has been eroded, reshaped by water in some form, and redeposited in a non-marine setting. Alluvium is typically made up of a variety of materials, including fine particles of silt and clay and larger particles of sand and gravel. When this loose alluvial material is deposited or cemented into a lithological unit, or lithified, it is called an alluvial deposit.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Basal area is the area of a given section of land that is occupied by the cross-section of tree trunks and stems at the base. The term is used in forest management and forest ecology.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Basal area is the area of a given section of land that is occupied by the cross-section of tree trunks and stems at the base. The term is used in forest management and forest ecology.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Aspect identifies the downslope direction of the maximum rate of change in value from each raster DEM cell to its neighbors.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Aspect identifies the downslope direction of the maximum rate of change in value from each raster DEM cell to its neighbors.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation.

# data[].attributes.definition
The portion of streamflow (discharge) that is supplied by groundwater sources.

# data[].attributes.definition
The portion of streamflow (discharge) that is supplied by groundwater sources.

# data[].attributes.definition
Percent base saturation (BS) is the percentage of the Cation Exchange Capacity (CEC) occupied by the basic cations Ca2+, Mg2+ and K+.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Percent base saturation (BS) is the percentage of the Cation Exchange Capacity (CEC) occupied by the basic cations Ca2+, Mg2+ and K+.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
The battery temperature of a datalogger or sensing system

# data[].attributes.definition
The battery temperature of a datalogger or sensing system

# data[].attributes.definition
In geology, bedrock is the lithified rock that lies under a loose softer material called regolith at the surface of the Earth or other terrestrial planets.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
In geology, bedrock is the lithified rock that lies under a loose softer material called regolith at the surface of the Earth or other terrestrial planets.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
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.

# data[].attributes.definition
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.

# data[].attributes.definition
The biomass is the mass of living biological organisms in a given area or ecosystem at a given time on or above the surface of the ground

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
The biomass is the mass of living biological organisms in a given area or ecosystem at a given time on or above the surface of the ground

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Microbial biomass (bacteria and fungi) is a measure of the mass of the living component of soil organic matter.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Microbial biomass (bacteria and fungi) is a measure of the mass of the living component of soil organic matter.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Total mass of phytoplankton, per unit area or volume

# data[].attributes.definition
Total mass of phytoplankton, per unit area or volume

# data[].attributes.term
Biomass, soil bacterial deoxyribonucleic acid (DNA)

# data[].attributes.definition
Total dry mass of soil bacterial deoxyribonucleic acid (DNA) per unit mass of soil

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.term
Biomass, soil bacterial deoxyribonucleic acid (DNA)

# data[].attributes.definition
Total dry mass of soil bacterial deoxyribonucleic acid (DNA) per unit mass of soil

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Total dry mass of plant material per unit area or volume

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Total dry mass of plant material per unit area or volume

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Blue-green algae (cyanobacteria) with phycocyanin pigments

# data[].attributes.definition
Blue-green algae (cyanobacteria) with phycocyanin pigments

# data[].attributes.definition
Classification of material encountered by a driller at various depths during the drilling of a well and recorded in the borehole log.

# data[].attributes.definition
Classification of material encountered by a driller at various depths during the drilling of a well and recorded in the borehole log.

# data[].attributes.definition
The brightness temperature of a body is the temperature of a black body which radiates the same power per unit solid angle per unit area. It is strongly recommended that a variable with this standard name should have a units_metadata attribute, with one of the values "on-scale" or "difference", whichever is appropriate for the data, because it is essential to know whether the temperature is on-scale (meaning relative to the origin of the scale indicated by the units) or refers to temperature differences (implying that the origin of the temperature scale is irrevelant), in order to convert the units correctly (cf. https://cfconventions.org/cf-conventions/cf-conventions.html#temperature-units).

# data[].attributes.definition
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.

# data[].attributes.definition
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.

# data[].attributes.definition
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.

# data[].attributes.definition
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.

# data[].attributes.definition
Crown closure is a term used in forestry. Crown closure and crown cover are two slightly different measures of the forest canopy and that determine the amount of light able to penetrate to the forest floor.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Crown closure is a term used in forestry. Crown closure and crown cover are two slightly different measures of the forest canopy and that determine the amount of light able to penetrate to the forest floor.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Forest canopy density and height are used as variables in a number of environmental applications, such as biomass estimation, vegetation coverage, and biodiversity determination. Canopy density, or canopy cover, is the ratio of vegetation to ground as seen from the air. Canopy height measures how far above the ground the top of the canopy is. Lidar can be used to determine both of these variables.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
Forest canopy density and height are used as variables in a number of environmental applications, such as biomass estimation, vegetation coverage, and biodiversity determination. Canopy density, or canopy cover, is the ratio of vegetation to ground as seen from the air. Canopy height measures how far above the ground the top of the canopy is. Lidar can be used to determine both of these variables.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
The carrier-to-noise ratio is defined as the ratio of the received modulated carrier signal power C to the received noise power N

# data[].attributes.definition
In geometry, the circumference (from Latin circumferens, meaning "carrying around") of a circle is the (linear) distance around it. That is, the circumference would be the length of the circle if it were opened up and straightened out to a line segment. Since a circle is the edge (boundary) of a disk, circumference is a special case of perimeter. The perimeter is the length around any closed figure and is the term used for most figures excepting the circle and some circular-like figures such as ellipses. Informally, "circumference" may also refer to the edge itself rather than to the length of the edge.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
In geometry, the circumference (from Latin circumferens, meaning "carrying around") of a circle is the (linear) distance around it. That is, the circumference would be the length of the circle if it were opened up and straightened out to a line segment. Since a circle is the edge (boundary) of a disk, circumference is a special case of perimeter. The perimeter is the length around any closed figure and is the term used for most figures excepting the circle and some circular-like figures such as ellipses. Informally, "circumference" may also refer to the edge itself rather than to the length of the edge.

# data[].attributes.note
Added to support Critical Zone Observatory (CZO) data use cases. 

# data[].attributes.definition
USDA particle size distribution category. Less then 0.002 mm diameter fine earth particles. 

# data[].attributes.definition
USDA particle size distribution category. Less then 0.002 mm diameter fine earth particles. 

# data[].attributes.definition
Cloud cover (also known as cloudiness, cloudage, or cloud amount) refers to the fraction of the sky obscured by clouds when observed from a particular location.

# data[].attributes.definition
Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area, or if the cell_methods restricts the evaluation to some portion of that grid cell (e.g. "where sea_ice"), then it is the area of interest divided by the area of the identified portion. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. For the cloud area fraction between specified levels in the atmosphere, standard names including "cloud_area_fraction_in_atmosphere_layer" are used. Standard names also exist for high, medium and low cloud types. Cloud area fraction is also called "cloud amount" and "cloud cover.

# data[].attributes.definition
"Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area, or if the cell_methods restricts the evaluation to some portion of that grid cell (e.g. "where sea_ice"), then it is the area of interest divided by the area of the identified portion. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. For the cloud area fraction between specified levels in the atmosphere, standard names including "cloud_area_fraction_in_atmosphere_layer" are used. Standard names also exist for high, medium and low cloud types. Cloud area fraction is also called "cloud amount" and "cloud cover".