This table shows the mapping of variable names from the default instrument output files to the corresponding variables defined in this reporting format. Note that copying and pasting the content of this table from GitHub into a spreadsheet may improve readability for some viewers (this functionality does not work from GitBook).
| Defined variables | ADC iFL | ADC LCi T | ADC proT | CID CI-340 | Licor 6400XT | Licor 6800 | PP Systems CIRAS-2 | PP Systems CIRAS-3 | PP Systems TARGAS-1 | Walz GFS-3000 | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| variableName | variableUnit | variableDescription | variableName | variableUnit | variableDescription | variableName | variableUnit | variableDescription | variableName | variableUnit | variableDescription | variableName | variableUnit | variableDescription | variableName | variableUnit | variableDescription | variableName | variableUnit | variableDescription | variableName | variableUnit | variableDescription | variableName | variableUnit | variableDescription | variableName | variableUnit | variableDescription | variableName | variableUnit | variableDescription |
| date | YYYY-MM-DD | Date of observation | Dt | - | Date (text) | Dt | - | Date (text) | Dt | - | Date (text) | Year, M, D | - | Current year; Current month; Current day (3 separate columns) | YYYYMMDD | - | Date code (integer) | date | - | Date of last observation | Date | ExcelTime | Date | dd/mm/yy | Date | yyyy-mm-dd | Date | |||||
| time | HH:MM:SS | Time of observation | Tm | - | Time of day | tm | - | Time of day | tm | - | Time of day | H, m, and s | - | Time experiments conducted | HHMMSS | - | real time clock | hhmmss | - | Time of last observation | Time | ExcelTime | Time | hh:mm:ss | Time | hh:mm:dd | Time | |||||
| record | - | Observation record number | Record | - | Current record number | Record | - | Current record number | Record | - | Measurement number | Count | - | Number of measurements that have been saved | Obs | - | # Obs stored in log file | obs | - | Number of observations logged | Rec Num | Number | Object | Object number | ||||||||
| area | cm² | Leaf area | Area | cm2 | projected leaf surface area | Area | cm2 | projected leaf surface area | Area | cm2 | projected leaf surface area | Area | cm² | In-chamber leaf area | S | cm² | Leaf area | Leaf Area | cm² | Leaf Area | Leaf Area | cm² | Leaf Area | Area | Area | cm² | Value of the sample used for calculations | |||||
| A | µmol m⁻² s⁻¹ | Net CO2 exchange per leaf area | A | μmol m-2 s-1 | Photosynthetic rate | A | μmol m-2 s-1 | Photosynthetic rate | A | μmol m-2 s-1 | Photosynthetic assimilation rate | Pn | μmol m-2 s-1 | net photosynthesis rate | Photo | µmol m⁻² s⁻¹ | Photosynthetic rate | A | µmol m⁻² s⁻¹ | Assimilation rate | Pn | µmol m⁻² s⁻¹ | Net Photosynthetic Rate | A | µmol CO2 m⁻² s⁻¹ | Assimilation | A | µmol CO2 m⁻² s⁻¹ | Assimilation | A | µmol m⁻² s⁻¹ | Assimilation rate |
| Ci | µmol mol⁻¹ | Intercellular CO2 concentration in air | cI | vpm | Sub-stomatal CO2 | Ci | vpm | Sub-stomatal CO2 | cI | vpm | Sub-stomatal CO2 | IntCO2 | µmol mol⁻¹ | Internal CO2 concentration | Ci | µmol mol⁻¹ | Intercellular CO2 concentration | Ci | µmol mol⁻¹ | Intercellular CO2 | Ci | ppm | Substomatal CO2 Concentration | Ci | µmol mol⁻¹ | Sub-Stomatal CO2 Concentration | Ci | µmol mol⁻¹ | Leaf internal CO2 Concentration | ci | ppm | Intercellular CO2 mole fraction |
| CO2r | µmol mol⁻¹ | CO2 concentration in wet air entering chamber | cref | vpm | CO2 reference | Cref | vpm | CO2 reference | Cref | ppm | CO2 reference | CO2in | ppm | Inlet CO2 | CO2R | µmol mol⁻¹ | Reference cell CO2 | CO2_r | µmol mol⁻¹ | Reference cell CO2 concentration | Cr | ppm | Reference CO2 | CO2r | µmol mol⁻¹ | CO2 Reference | CO2r | ppm | CO2 Reference | CO2abs | ppm | CO2 mole fraction in the reference cell of analyzer |
| CO2s | µmol mol⁻¹ | CO2 concentration in wet air inside chamber | c'an | vpm | CO2 analysis (correction for dilution) | C'an | vpm | CO2 analysis (correction for dilution) | Can | vpm | CO2 analysis (correction for dilution) | CO2out | ppm | Outlet CO2 | CO2S | µmol mol⁻¹ | Sample cell CO2 | CO2_s | µmol mol⁻¹ | Sample cell CO2 concentration | Ca | ppm | Analysis CO2 | CO2a | µmol mol⁻¹ | CO2 Analysis | CO2a | ppm | CO2 Analysis | ca | ppm | CO2 mole fraction in the cuvette |
| dCO2 | µmol mol⁻¹ | Sample minus reference CO2 concentration in air | Δc | vpm | Delta CO2 (Cref - C'an) | ^C | vpm | Delta CO2 (Cref - C'an) | ΔCO2 | vpm | Delta CO2 (Cref - C'an) | DCO2 | µmol mol⁻¹ | ΔCO2 | ΔCO2 | µmol mol⁻¹ | Sample - reference CO2 | Cd | ppm | Differential CO2 | CO2d | µmol mol⁻¹ | CO2 Differential | CO2d | ppm | CO2 Differential | dCO2MP | ppm | Difference between CO2 mole fraction in the sample cell and reference cell of the analyzer in measuring point mode. | |||
| dH2O | mmol mol⁻¹ | Sample minus reference H2O concentration in air | Δe | mBar | Delta H2O (e'an - eref), partial pressure | ^e | mBar | Delta H2O (e'an - eref), partial pressure | Δe | mBar | Delta H2O (e'an - eref), partial pressure | DH2O | mmol mol⁻¹ | ΔH2O | ΔH2O | mmol mol⁻¹ | Sample - reference H2O | Hd | mb | Differential CO2 | H2Od | mb | H2O Differential | H2Od | mb | H2O Differential | dH2OMP | ppm | Difference between H2O mole fraction in the sample cell and reference cell of the analyzer in measuring point mode. | |||
| E | mmol m⁻² s⁻¹ | Transpiration rate of H2O per leaf area. Note that output units from some instruments are in mol and will require conversion. | E | mmol m-2 s-1 | Transpiration rate | E | mmol m-2 s-1 | Transpiration rate | E | mmol m-2 s-1 | Transpiration rate | E | mmol m⁻² s⁻¹ | Transpiration rate | Trmmol | mmol m⁻² s⁻¹ | Transpiration rate | E | mol m⁻² s⁻¹ | Transpiration rate | E | mmol m⁻² s⁻¹ | Transpiration rate | E | mmol H2O m⁻² s⁻¹ | Transpiration | E | mmol H2O m⁻² s⁻¹ | Transpiration | E | mmol m⁻² s⁻¹ | Transpiration rate |
| flow | µmol s⁻¹ | Flow rate of air into chamber | u | μmol s-1 | ASU mass flow (measured) | U | μmol s-1 | ASU mass flow (measured) | U | μmol s-1 | ASU mass flow (measured) | Flow | lpm | Flow rate | Flow | µmol s⁻¹ | Flow rate | Flow | µmol s⁻¹ | Flow rate to chamber | V | ml min-1 | Chamber flow rate | Flow | cc min-1 | Cuvette Flow Rate | Flow | cc min-1 | Cuvette Flow Rate | Flow | µmol s⁻¹ | Gas flow through the cuvette |
| gsw | mmol m⁻² s⁻¹ | Stomatal conductance to water vapor per leaf area | gs | mmol m-2 s-1 | Stomatal conductance of H2O | Gs | mol m-2 s-1 | Stomatal conductance of H2O | Gs | mmol m-2 s-1 | Stomatal conductance of H2O | C | mmol m⁻² s⁻¹ | Stomatal conductance rate | Cond | mol m⁻² s⁻¹ | Conductance to water | gsw | mol m⁻² s⁻¹ | Stomatal conductance to water vapor | gs | mmol m⁻² s⁻¹ | Stomatal Conductance | gs | mmol H2O m⁻² s⁻¹ | Stomatal Conductance | gs | mmol H2O m⁻² s⁻¹ | Stomatal Conductance | GH2O | mmol m⁻² s⁻¹ | Water vapor conductance |
| H2Or | mmol mol⁻¹ | H2O concentration in air entering chamber | eref | mBar | H2O reference, as partial pressure | eref | mBar | H2O reference, as partial pressure | eref | mBar | H2O reference, as partial pressure | H2Oin | kPa | Inlet water pressure | H2OR | mmol mol⁻¹ | Reference H2O | H2O_r | mmol mol⁻¹ | Reference cell H2O concentration | Hr | mb | Reference H2O | H2Or | mb | H2O Reference | H2Or | mb | H2O Reference | H2Oabs | ppm | H2O mole fraction in the reference cell of analyzer |
| H2Os | mmol mol⁻¹ | H2O concentration in air inside chamber | e'ad | mBar | H2O analysis, dilution corrected | e'ad | mBar | H2O analysis, dilution corrected | e'an | mBar | H2O analysis, dilution corrected | H2Oout | kPa | Outlet water pressure | H2OS | mmol mol⁻¹ | Sample H2O | H2O_s | mmol mol⁻¹ | Sample cell H2O concentration | Ha | mb | Analysis H20 | H2Oa | mb | H2O Analysis | H2Oa | mb | H2O Analysis | wa | ppm | H2O mole fraction in the cuvette |
| Patm | kPa | Atmospheric pressure | P | mBar | atmospheric pressure | P | mBar | atmospheric pressure | P | mBar | atmospheric pressure | Pressure | kPa | Atmospheric pressure (also ATM) | Press | kPa | Atmospheric pressure | Pa | kPa | Atmospheric pressure | Ap | mb | Atmospheric pressure | Patm | mb | Atmospheric pressure | atm | mb | Atmospheric pressure | Pamb | kPa | Ambient barometric pressure |
| Qin | µmol m⁻² s⁻¹ | In-chamber photosynthetic flux density (PPFD) incident on the leaf, quanta per area | Qleaf | μmol m-2 s-1 | P.A.R. incident on leaf surface | Qleaf | μmol m-2 s-1 | P.A.R. incident on leaf surface | Qleaf | μmol m-2 s-1 | P.A.R. incident on leaf surface corrected for Trw | PAR | μmol m-2 s-1 | Photosynthetically Active Radiation | PARi | µmol m⁻² s⁻¹ | In-chamber PAR | Qin | µmol m⁻² s⁻¹ | PPFD incident on the leaf | Q | µmol m⁻² s⁻¹ | PAR | PARi | µmol m⁻² s⁻¹ | PAR Internal | PARi | µmol m⁻² s⁻¹ | PAR Internal | PARtop | µmol m⁻² s⁻¹ | Photosynthetically active radiation measured with sensor in upper cuvette half. Also see PARbot. |
| Qout | µmol m⁻² s⁻¹ | External photosynthetic flux density (PPFD), quanta per area | Q | μmol m-2 s-1 | P.A.R. at window | Q | μmol m-2 s-1 | P.A.R. at window | Q | μmol m-2 s-1 | P.A.R. at window corrected for Trw | PARo | µmol m⁻² s⁻¹ | External PAR | Qamb_out | µmol m⁻² s⁻¹ | External quantum sensor | PARe | µmol m⁻² s⁻¹ | PAR External | PARe | µmol m⁻² s⁻¹ | PAR External | PARamb | µmol m⁻² s⁻¹ | Ambient photosynthetically active radiation measured with extenrnal sensor | ||||||
| RHr | % | Relative humidity of air entering the chamber | Wref | %RH | H2O reference, as %RH | Wref | %RH | H2O reference, as %RH | Wref | %RH | H2O reference, as %RH | RHin | % | Inlet relative humidity | RH_R | % | Relative humidity in the reference cell | |||||||||||||||
| RHs | % | Relative humidity of air inside the chamber | w'an | %RH | H2O analysis, corrected | w'ad | %RH | H2O analysis, dilution corrected | W'an | %RH | H2O analysis, corrected as %RH | RHout | % | Outlet relative humidity | RH_S | % | Relative humidity in the sample cell | RHcham | % | Relative humidity in the chamber | RH | % | Relative Humidity (calculated) | RH | % | Relative Humidity inside Leaf Chamber | rH | % | Relative humidity in the cuvette | |||
| Tair | °C | Air temperature inside the chamber | Tch | °C | Leaf chamber temperature | Tch | °C | Leaf chamber temperature | Tch | °C | Leaf chamber temperature | Tair | °C | Air temperature | Tair | °C | Chamber Air Temp | Tair | °C | Chamber air temperature | Tc | °C | Cuvette Air Temperature | Tcuv | °C | Temperature in Cuvette | Tcuv | °C | Cuvette air temperature | Tcuv | °C | Cuvette temperature measured in lower half |
| Tleaf | °C | Leaf surface temperature | Tleaf | °C | Leaf surface temperature (also Tl) | Tleaf | °C | Leaf surface temperature | Tleaf | °C | Leaf surface temperature | Tleaf | °C | Leaf temperature | Tleaf | °C | Leaf Temp, measured with the thermocouple. Also see CTleaf. Same as Tleaf unless doing energy balance. | Tleaf | °C | Leaf thermocouple #1 | Tl | °C | Leaf Temperature | Tleaf | °C | Leaf Temperature | Tleaf | °C | Leaf surface temperature | Tleaf | °C | Leaf temperature |
| VPDleaf | kPa | Leaf to air vapor pressure deficit | VPD | - | Vapor pressure deficit | VpdL | kPa | Vapor pressure deficit based on leaf temp | VPDleaf | kPa | Vapor pressure deficit at leaf temperature | VPD | mb | Vapr Pressure Deficit | VPD | kPa | Leaf to air Vapor Pressure Deficit | VPD | mb | Vapor Pressure Deficit | VPD | Pa/kPa | Vapor pressure deficit between object (leaf) and air |