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water (version 0.5)

Actual Evapotranspiration with Energy Balance Models

Description

Tools and functions to calculate actual evapotranspiration using surface energy balance models.

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Version

Install

install.packages('water')

Monthly Downloads

66

Version

0.5

License

GPL (>= 2)

Maintainer

Guillermo Federico Olmedo

Last Published

December 5th, 2016

Functions in water (0.5)

albedo

Calculates Broadband Albedo from Landsat data
calcTOAr

Calculates Top of atmosphere reflectance
calcH

Iterative function to estimate H and R.ah
calcSR

Calculates surface reflectance for L7
dailyET

Calculates daily ET using Penman Monteith hourly formula for every hour
ET24h

Calculates daily ET from a surface energy balance and Weather Station
DEM_Talca

SRTM DEM from east of Talca, Chile
checkSRTMgrids

Check needed SRTM grids from image extent
calcAnchors

Select anchors pixels for H function
createAoi

Create aoi polygon from topleft and bottomright coordinates
incLWradiation

Calculates long wave incoming radiation
loadImage

Load Landsat data from folder
METRIC.G

Estimates Net Radiation as in METRIC Model
METRIC.Rn

Estimates Net Radiation as in METRIC Model
incSWradiation

Calculates Incoming Solar Radiation
getDataWS

Export data.frame from waterWeatherStation Object
METRIC.EB

Estimates Energy Balance using METRIC2010 Model
print.waterWeatherStation

Print method for waterWeatherStation S3 class
hourlyET

Calculates ET using Penman Monteith hourly formula
netRadiation

Estimates net radiation
outLWradiation

Calculates Long wave outgoing radiation
read.WSdata

Prepares weather station data
L7_Talca

Landsat 7 scene from east of Talca, Chile
LAI

Estimate LAI from Landsat Data
plot.waterWeatherStation

Plot method for waterWeatherStation S3 class
prepareSRTMdata

Create a mosaic with SRTM grid from image extent
METRICtopo

Calculates surface model used in METRIC
momentumRoughnessLength

Calculates Momentum Roughness Length
SWtrasmisivity

Calculates short wave transmisivity
waterOptions

Global options for water package
read.WSdata2

Prepares weather station data 2
soilHeatFlux

Estimates Soil Heat Flux
surfaceTemperature

Estimates Land Surface Temperature from Landsat Data
solarAngles

Calculates solar angles