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