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bigleaf (version 0.7.0)

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

1,413

Version

0.7.0

License

GPL (>= 2)

Maintainer

Juergen Knauer

Last Published

March 20th, 2019

Functions in bigleaf (0.7.0)

Gb.Choudhury

Boundary Layer Conductance according to Choudhury & Monteith 1988
Rg.to.PPFD

Conversions between Global Radiation and Photosynthetic Photon Flux Density
potential.radiation

Potential radiation
extraterrestrial.radiation

Extraterrestrial solar radiation
Reynolds.Number

Roughness Reynolds Number
longwave.conductance

Longwave Radiative Transfer Conductance of the Canopy
check.input

Check Input for Functions in the bigleaf Package
ms.to.mol

Conversion between Conductance Units
filter.data

Basic Eddy Covariance Data Filtering
pressure.from.elevation

Atmospheric Pressure from Hypsometric Equation
Esat.slope

Saturation Vapor Pressure (Esat) and Slope of the Esat Curve
air.density

Air Density
kg.to.mol

Conversion between Mass and Molar Units
check.length

Test Variables for Equal Length
isothermal.Rn

Isothermal Net Radiation
energy.closure

Energy Balance Closure
filter.growing.season

GPP-based Growing Season Filter
WUE.metrics

Water-Use Efficiency Metrics
VPD.to.rH

Conversions between Humidity Measures
dew.point.solver

Solver function for dew point temperature
wetbulb.temp

Wet-Bulb Temperature
intercellular.CO2

Bulk Intercellular CO2 Concentration
kinematic.viscosity

Kinematic Viscosity of Air
stability.correction

Integrated Stability Correction Functions for Heat and Momentum
potential.ET

Potential Evapotranspiration
wind.profile

Wind Speed at Given Heights in the Surface Layer
photosynthetic.capacity

Bulk Canopy Photosynthetic Capacity (Vcmax and Jmax)
reference.ET

Reference Evapotranspiration
roughness.parameters

Roughness Parameters
bigleaf.constants

Constants Used in the bigleaf Package
energy.use.efficiency

Energy-Use Efficiency (EUE)
latent.heat.vaporization

Latent Heat of Vaporization
psychrometric.constant

Psychrometric Constant
stability.parameter

Stability Parameter "zeta"
virtual.temp

Virtual Temperature
radiometric.surface.temp

Radiometric Surface Temperature
wetbulb.solver

Solver Function for Wet-Bulb Temperature
biochemical.energy

Biochemical Energy
surface.CO2

CO2 Concentration at the Canopy Surface
dew.point

Dew Point
decoupling

Canopy-Atmosphere Decoupling Coefficient
equilibrium.imposed.ET

Equilibrium and Imposed Evapotranspiration
light.response

Ecosystem Light Response
light.use.efficiency

Light-Use Efficiency (LUE)
surface.conductance

Surface Conductance to Water Vapor
umolCO2.to.gC

Conversion between Mass and Molar Units of Carbon and CO2
surface.conditions

Big-Leaf Surface Conditions
stomatal.sensitivity

Stomatal Sensitivity to VPD
stomatal.slope

Stomatal Slope Parameter "g1"
LE.to.ET

Conversion between Latent Heat Flux and Evapotranspiration
Monin.Obukhov.length

Monin-Obukhov Length
Arrhenius.temp.response

(Modified) Arrhenius Temperature Response Function
AT_Neu_Jul_2010

Eddy Covariance Data of AT-Neu (Neustift)
FR_Pue_May_2012

Eddy Covariance Data of FR-Pue (Puechabon)
DE_Tha_Jun_2014

Eddy Covariance Data of DE-Tha (Tharandt)
aerodynamic.conductance

Aerodynamic Conductance
Gb.Su

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

Boundary Layer Conductance according to Thom 1972