# data[].attributes.definition
Operating parameter of a data logger. Relative humidity of a data logger.

# data[].attributes.definition
Operating parameter of a data logger. Relative humidity of a device.

# data[].attributes.definition
The electrical resistance of an object is a measure of its opposition to the flow of electric current. The inverse quantity is electrical conductance, and is the ease with which an electric current passes.

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

# data[].attributes.definition
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.

# data[].attributes.definition
Operating hours counter or runtime of a device or logger (e.g. pump).

# data[].attributes.definition
USDA particle size distribution category. 0.5 to 2 mm diameter fine earth particles. 

# data[].attributes.definition
The amount of sediment passing a sieve in a gradation test

# data[].attributes.definition
The amount of sediment retained on a sieve in a gradation test

# data[].attributes.definition
Seismic refraction is a geophysical principle (see refraction) governed by Snell's Law. Used in the fields of engineering geology, geotechnical engineering and exploration geophysics, seismic refraction traverses (seismic lines) are performed using a seismograph(s) and/or geophone(s), in an array and an energy source.

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

# data[].attributes.definition
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.

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

# data[].attributes.definition
A value between 0 ... 1 that measures the signal's Doppler coherency, that is the correlation between the signal and its Doppler lag.

    0 indicates white noise
    1 is the perfect Doppler point target

# data[].attributes.definition
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.

# data[].attributes.definition
USDA particle size distribution category. 0.002 to 0.5 mm diameter fine earth particles. 

# data[].attributes.definition
Skin temperature is the temperature of the outermost surface of the body.

# data[].attributes.note
Body skin temperature is also fine because sink temperature is sometimes also used like "Oberflächentemperaturen von Oberflächen im Gelände"

# data[].attributes.definition
Ratio between two variables in a linear relationship.

# data[].attributes.definition
Snow layers within the snowpack are a record of the winter’s weather. Like tree rings or strata of rock, layers can be traced to dates and conditions that formed them. One of the most important characteristics of a layer is its hardness. Harder snow is stronger and cohesive, while softer snow is weaker. 

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

# data[].attributes.definition
The depth of water if a snow cover is completely melted, expressed in units of depth, on a corresponding horizontal surface area.

# data[].attributes.definition
Soil aggregate stability is a measure of the ability of soil aggregates to resist degradation when exposed to external forces such as water erosion and wind erosion, shrinking and swelling processes, and tillage. Soil aggregate stability is a measure of soil structure and can be impacted by soil management.

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

# data[].attributes.definition
For soil resources, experience has shown that a natural system approach to classification, i.e. grouping soils by their intrinsic property (soil morphology), behaviour, or genesis, results in classes that can be interpreted for many diverse uses. Differing concepts of pedogenesis, and differences in the significance of morphological features to various land uses can affect the classification approach.

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

# data[].attributes.definition
Fraction of particles within a soil sample that are greater that 2mm in diameter

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

# data[].attributes.definition
A soil horizon is a layer parallel to the soil surface, whose physical characteristics differ from the layers above and beneath. Each soil type usually has three or four horizons.

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

# data[].attributes.definition
The total amount of water, including the water vapor, in an unsaturated soil.

# data[].attributes.definition
Soil organic matter (SOM) is the organic matter component of soil, consisting of plant and animal residues at various stages of decomposition, cells and tissues of soil organisms, and substances synthesized by soil organisms.

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

# data[].attributes.term
Soil organic matter (SOM) density fractionation

# data[].attributes.definition
Density fraction of Soil organic matter (SOM) in soil. Soil organic matter (SOM) is the organic matter component of soil, consisting of plant and animal residues at various stages of decomposition, cells and tissues of soil organisms, and substances synthesized by soil organisms.

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

# data[].attributes.definition
Soil respiration refers to the production of carbon dioxide when soil organisms respire. This includes respiration of plant roots, the rhizosphere, microbes and fauna.

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

# data[].attributes.definition
Temperature of soil. Default min/max values according to WMO quality control Guidelines.

# data[].attributes.definition
Soil texture is a classification instrument used both in the field and laboratory to determine soil classes based on their physical texture. Soil texture can be determined using qualitative methods such as texture by feel, and quantitative methods such as the hydrometer method.

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

# data[].attributes.note
use "Soil moisture" instead. Insert community entry "Soil volumetric water content " there.

# data[].attributes.definition
Sonic temperature is similar to 'virtual Temperature' but not exactly the same and derived from speed of sound of sonic anemometers/thermometers.

# data[].attributes.definition
Please note the wavelength [nm] in the sensor description.

# data[].attributes.definition
generate a specific conductance value compensated to 25°C

# data[].attributes.definition
Please note the wavelength [nm] in the sensor description.

# data[].attributes.definition
Operating parameter of a device. Status message in the form of a code or text message.

# data[].attributes.definition
In hydrology, stemflow is the flow of intercepted water down the trunk or stem of a plant.

# data[].attributes.definition
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.

# data[].attributes.definition
Time domain reflextometry, apparent length divided by probe length. Square root of dielectric

# data[].attributes.definition
Operating parameter of a data logger. Internal temperature data logger.

# data[].attributes.definition
Operating parameter of a device. Internal temperature of device.

# data[].attributes.definition
Water mass anomalies expressed in terms of equivalent water height from all water storage compartments including snow, surface water, soil moisture, and deep groundwater; not corrected for spatial leakage.

# data[].attributes.term
Terrestrial Water Storage Anomaly uncertainty

# data[].attributes.definition
Time-variable component of the uncertainty estimate for the GRACE-based water storage variability, given as standard deviation per grid point.

# data[].attributes.definition
The THSW Index uses temperature, humidity, solar radiation, and wind speed to calculate an apparent temperature.

# data[].attributes.definition
The THW Index uses temperature, humidity, and wind speed to calculate an apparent temperature.

# data[].attributes.definition
Ideally time format according to ISO 8601 (HH=hour, MM=minute, SS=second).

# data[].attributes.definition
Topographic wetness index (TWI), also known as the compound topographic index (CTI), is a steady state wetness index. It is commonly used to quantify topographic control on hydrological processes.

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

# data[].attributes.definition
Please note wavelength of the measurement.
FNU: Formazine Nephelometric Units – Scattered Light Measurement (Angle 90°) according to DIN EN ISO 7027.
FTU: Formazine Turbidity Unit.
NTU: Nephelometric Turbidity Unit – Scattered Light Measurement (Angle 90°) according to US regulations.

# data[].attributes.definition
Please note wavelength of the measurement.
FAU: Formazine Attenuation Units - Transmitted Light Measurement (Angle 0°) according to DIN EN ISO 7027.

# data[].attributes.definition
The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn-producing ultraviolet (UV) radiation at a particular place and time.

# data[].attributes.definition
consecutive number (e.g of a measurement)

# data[].attributes.definition
Please Specify the kind of Vapor Pressure (e.g. satuartion vapor pressure,  current vapor pressure, vapor pressure deflict) in sensor description.

# data[].attributes.definition
The difference between the actual water vapor pressure and the saturation of water vapor pressure at a particular temperature.

# data[].attributes.definition
Sensor e.g. ultrasonic measurement device. Therefore p.r.n estimation of snow height instead of vegetation height in winter.

# data[].attributes.definition
Vegetation is an assemblage of plant species and the ground cover they provide.

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

# data[].attributes.definition
A velocity is a vector quantity. Vertical indicates a vector component which is positive when directed upward, negative when directed downward.

# data[].attributes.definition
The visibility is the distance at which something can be seen.

# data[].attributes.definition
Voltage of battery. Typically equal to supply voltage of loggers or devices. Sometimes separatly measured, e.g. voltage of lithium batterys in computers.

# data[].attributes.definition
Operating parameter of a data logger. Supply- or operating voltage of a data logger.