v1.3.2.2 DOC: Pe_Oudin doc added

DESCRIPTION

 Package: airGR
 Type: Package
 Title: Suite of GR Hydrological Models for Precipitation-Runoff Modelling
-Version: 1.3.2.1
+Version: 1.3.2.2
 Date: 2019-05-22
 Authors@R: c(
   person("Laurent", "Coron", role = c("aut", "trl"), comment = c(ORCID = "0000-0002-1503-6204")),

NEWS.rmd

@@ -14,7 +14,7 @@ output:
 
 
 
-### 1.3.2.0 Release Notes (2019-05-22)
+### 1.3.2.2 Release Notes (2019-05-22)
 
 
 #### New features

man/PE_Oudin.Rd

+\encoding{UTF-8}
+
+
+\name{PE_Oudin}
+\alias{PE_Oudin}
+
+
+\title{Computation of daily our hourly series of potential evapotranspiration with Oudin's formula}
+
+
+\usage{
+PE_Oudin(JD, Temp, LatRad, Lat, LatUnit, TimeStepIn = "daily", TimeStepOut = "daily")
+}
+
+
+\arguments{
+\item{JD}{[numeric] time series of Julian day of the year [-]; see details below}
+
+\item{Temp}{[numeric] time series of daily (or hourly) mean air temperature [°C]}
+
+\item{LatRad}{(deprecated)[numeric] latitude of measurement for the temperature series [rad]. Please use \code{Lat} instead}
+
+\item{Lat}{[numeric] latitude of measurement for the temperature series [radian or degrees]}
+
+\item{LatUnit}{[character] latitude unit (default = \code{"rad"} or \code{"deg"})}
+
+\item{TimeStepIn}{[character] time step of inputs (default = \code{"daily"} or \code{"hourly"})}
+
+\item{TimeStepOut}{[character] time step of outputs (default = \code{"daily"} or \code{"hourly"})}
+}
+
+
+\value{
+[numeric] time series of daily potential evapotranspiration [mm/time step]
+}
+
+
+\description{
+Function which computes daily PE using the formula from Oudin et al. (2005).
+}
+
+\details{
+In the \code{JD} argument, the Julian day of the year of the 1st of January is equal to 1 and the 31st of December to 365 (366 in leap years)). If the Julian day of the year is computed on an object of the \code{POSIXlt} class, the user has to add 1 to the returned value (e.g. \code{as.POSIXlt("2016-12-31")$yday + 1}).
+For hourly temperature, all the values of the same day have to be set to the same Julian day of the year (e.g. \code{as.POSIXlt("2016-12-31 00:00:00")$yday + 1} and \code{as.POSIXlt("2016-12-31 00:01:00")$yday + 1}). Each days must have 24 identical Julian day values (one for each hour).
+}
+
+\examples{
+library(airGR)
+data(L0123001)
+PotEvap <- PE_Oudin(JD = as.POSIXlt(BasinObs$DatesR)$yday + 1,
+                         Temp = BasinObs$T,
+                         Lat = 0.8, LatUnit = "rad")
+}
+
+
+\author{
+Laurent Coron, Ludovic Oudin, Olivier Delaigue, Guillaume Thirel
+}
+
+
+\references{
+Oudin, L., F. Hervieu, C. Michel, C. Perrin, V. Andréassian, F. Anctil and C. Loumagne (2005). 
+  Which potential evapotranspiration input for a lumped rainfall-runoff model?: 
+  Part 2-Towards a simple and efficient potential evapotranspiration model for rainfall-runoff modelling. 
+  Journal of Hydrology, 303(1-4), 290-306. doi:10.1016/j.jhydrol.2004.08.026.
+}
+