Evaporative heat exchange between a wet surface and the surrounding air

Description

Evaporative heat exchange between a surface and the surrounding air [kJ m-2 d-1]. This function is only intended for wet surfaces, i.e., it assumes the vapor density at the surface is the saturation vapor density

Usage

EvapHeat(surftemp, airtemp, relativehumidity=NULL, Tn=NULL, wind=2)

Arguments

Note

This function will use the relative humidity to esimate air vapor density if the value passed is between 0-1. Otherwise, it will assume the minimum daily air temperature is approximately the dew point temp.

Author(s)

M. Todd Walter

References

Campbell, Gaylon S. An Introduction to Environmental Biophysics. New York: Springer-Verlag, 1977.

Examples

	EvapHeat(surftemp=15, airtemp=5, relativehumidity=0.7)
 

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(EcoHydRology)
Loading required package: operators

Attaching package: 'operators'

The following objects are masked from 'package:base':

    options, strrep

Loading required package: topmodel
Loading required package: DEoptim

DEoptim package
Differential Evolution algorithm in R
Authors: D. Ardia, K. Mullen, B. Peterson and J. Ulrich

Loading required package: XML
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/EcoHydRology/EvapHeat.Rd_%03d_medium.png", width=480, height=480)
> ### Name: EvapHeat
> ### Title: Evaporative heat exchange between a wet surface and the
> ###   surrounding air
> ### Aliases: EvapHeat
> 
> ### ** Examples
> 
> 	EvapHeat(surftemp=15, airtemp=5, relativehumidity=0.7)
[1] 11045
>  
> 
> 
> 
> 
> dev.off()
null device 
          1 
>