EstCloudiness: Estimated Cloudiness
In EcoHydRology: A Community Modeling Foundation for EcoHydrology

Description Usage Arguments Author(s) References Examples

Estimates the cloudiness of the atmosphere by scaling to atmospheric transmissivity

1 2	EstCloudiness(Tx=(-999), Tn=(-999), trans=NULL, transMin = 0.15, transMax = 0.75, opt = "linear")

`Tx`	maximum daily temperature [C]
`Tn`	minimum daily temperature [C]
`trans`	transmissivity of the atmosphere (value between 0-1)
`transMin`	Transmissivities equal and below this value will return a cloudiness value of 1 (for linear approximation)
`transMax`	Transmissivities equal and above this value will return a cloudiness value of 0 (for linear approximation)
`opt`	Currently there are two options: "linear" (Campbell 1985) and "Black" (1956)

M. Todd Walter, Josephine Archibald

Campbell G.S. (1985) Soil Physics with Basic: Transport Models for Soil Plant Systems. Elsevier, New York

Black, J.N. (1956) The Distribution of Solar Radiation over the Earth's Surface. Theoretical and Applied Climatology 7:2 165-189

1 2	EstCloudiness(trans=0.2) EstCloudiness(20,12,opt="Black")

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
Loading required package: parallel

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

Loading required package: XML
[1] 0.9166667
[1] 0.4054344