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bigleaf (version 0.7.1)

Physical and Physiological Ecosystem Properties from Eddy Covariance Data

Description

Calculation of physical (e.g. aerodynamic conductance, surface temperature), and physiological (e.g. canopy conductance, water-use efficiency) ecosystem properties from eddy covariance data and accompanying meteorological measurements. Calculations assume the land surface to behave like a 'big-leaf' and return bulk ecosystem/canopy variables.

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Version

Install

install.packages('bigleaf')

Monthly Downloads

2,962

Version

0.7.1

License

GPL (>= 2)

Maintainer

Juergen Knauer

Last Published

June 8th, 2019

Functions in bigleaf (0.7.1)

filter.growing.season

GPP-based Growing Season Filter
intercellular.CO2

Bulk Intercellular CO2 Concentration
air.density

Air Density
aerodynamic.conductance

Aerodynamic Conductance
reference.ET

Reference Evapotranspiration
roughness.parameters

Roughness Parameters
surface.conductance

Surface Conductance to Water Vapor
umolCO2.to.gC

Conversion between Mass and Molar Units of Carbon and CO2
energy.closure

Energy Balance Closure
bigleaf.constants

Constants Used in the bigleaf Package
longwave.conductance

Longwave Radiative Transfer Conductance of the Canopy
AT_Neu_Jul_2010

Eddy Covariance Data of AT-Neu (Neustift)
energy.use.efficiency

Energy-Use Efficiency (EUE)
LE.to.ET

Conversion between Latent Heat Flux and Evapotranspiration
Arrhenius.temp.response

(Modified) Arrhenius Temperature Response Function
Monin.Obukhov.length

Monin-Obukhov Length
Reynolds.Number

Roughness Reynolds Number
Rg.to.PPFD

Conversions between Global Radiation and Photosynthetic Photon Flux Density
isothermal.Rn

Isothermal Net Radiation
dew.point

Dew Point
decoupling

Canopy-Atmosphere Decoupling Coefficient
light.response

Ecosystem Light Response
FR_Pue_May_2012

Eddy Covariance Data of FR-Pue (Puechabon)
Gb.Choudhury

Boundary Layer Conductance according to Choudhury & Monteith 1988
check.length

Test Variables for Equal Length
check.input

Check Input for Functions in the bigleaf Package
dew.point.solver

Solver function for dew point temperature
wind.profile

Wind Speed at Given Heights in the Surface Layer
biochemical.energy

Biochemical Energy
filter.data

Basic Eddy Covariance Data Filtering
extraterrestrial.radiation

Extraterrestrial solar radiation
photosynthetic.capacity

Bulk Canopy Photosynthetic Capacity (Vcmax and Jmax)
kg.to.mol

Conversion between Mass and Molar Units
stomatal.sensitivity

Stomatal Sensitivity to VPD
potential.ET

Potential Evapotranspiration
DE_Tha_Jun_2014

Eddy Covariance Data of DE-Tha (Tharandt)
radiometric.surface.temp

Radiometric Surface Temperature
wetbulb.temp

Wet-Bulb Temperature
light.use.efficiency

Light-Use Efficiency (LUE)
stability.parameter

Stability Parameter "zeta"
stability.correction

Integrated Stability Correction Functions for Heat and Momentum
pressure.from.elevation

Atmospheric Pressure from Hypsometric Equation
potential.radiation

Potential radiation
stomatal.slope

Stomatal Slope Parameter "g1"
virtual.temp

Virtual Temperature
Esat.slope

Saturation Vapor Pressure (Esat) and Slope of the Esat Curve
WUE.metrics

Water-Use Efficiency Metrics
equilibrium.imposed.ET

Equilibrium and Imposed Evapotranspiration
VPD.to.rH

Conversions between Humidity Measures
ms.to.mol

Conversion between Conductance Units
kinematic.viscosity

Kinematic Viscosity of Air
psychrometric.constant

Psychrometric Constant
latent.heat.vaporization

Latent Heat of Vaporization
wetbulb.solver

Solver Function for Wet-Bulb Temperature
surface.conditions

Big-Leaf Surface Conditions
surface.CO2

CO2 Concentration at the Canopy Surface
Gb.Su

Boundary Layer Conductance according to Su et al. 2001
Gb.Thom

Boundary Layer Conductance according to Thom 1972