VPD.to.rH: Conversions between Humidity Measures

In lhmet-forks/bigleaf: Physical and Physiological Ecosystem Properties from Eddy Covariance Data

Description

Conversion between vapor pressure (e), vapor pressure deficit (VPD), specific humidity (q), and relative humidity (rH).

Usage

VPD.to.rH(VPD, Tair, Esat.formula = c("Sonntag_1990", "Alduchov_1996",
  "Allen_1998"), constants = bigleaf.constants())

rH.to.VPD(rH, Tair, Esat.formula = c("Sonntag_1990", "Alduchov_1996",
  "Allen_1998"), constants = bigleaf.constants())

e.to.rH(e, Tair, Esat.formula = c("Sonntag_1990", "Alduchov_1996",
  "Allen_1998"), constants = bigleaf.constants())

VPD.to.e(VPD, Tair, Esat.formula = c("Sonntag_1990", "Alduchov_1996",
  "Allen_1998"), constants = bigleaf.constants())

e.to.VPD(e, Tair, Esat.formula = c("Sonntag_1990", "Alduchov_1996",
  "Allen_1998"), constants = bigleaf.constants())

e.to.q(e, pressure, constants = bigleaf.constants())

q.to.e(q, pressure, constants = bigleaf.constants())

q.to.VPD(q, Tair, pressure, Esat.formula = c("Sonntag_1990",
  "Alduchov_1996", "Allen_1998"), constants = bigleaf.constants())

VPD.to.q(VPD, Tair, pressure, Esat.formula = c("Sonntag_1990",
  "Alduchov_1996", "Allen_1998"), constants = bigleaf.constants())

Arguments

VPD	Vapor pressure deficit (kPa)
Tair	Air temperature (deg C)
Esat.formula	Optional: formula to be used for the calculation of esat and the slope of esat. One of "Sonntag_1990" (Default), "Alduchov_1996", or "Allen_1998". See Esat.slope.
constants	eps - ratio of the molecular weight of water vapor to dry air (-) Pa2kPa - conversion pascal (Pa) to kilopascal (kPa)
rH	Relative humidity (-)
e	Vapor pressure (kPa)
pressure	Atmospheric pressure (kPa)
q	Specific humidity (kg kg-1)

References

Foken, T, 2008: Micrometeorology. Springer, Berlin, Germany.

lhmet-forks/bigleaf documentation built on Aug. 4, 2020, 12:08 a.m.