processWTH: Basic Processing Tools for Enriching get_weather outputs

In allogamous/EnvRtype: Envirotyping Tools for Crop Research and Genetic Improvment

Basic Processing Tools for Enriching get_weather outputs

Description

A wraper of param_padiation(), param_atmospheric(), and param_temperature() for evaluating get_weather() datasets. Calculates a series of parameters based on the get_weather() object.

Usage

processWTH(
  env.data,
  PREC = NULL,
  Tdew = NULL,
  Tmin = NULL,
  Tmax = NULL,
  RH = NULL,
  Rad = NULL,
  G = NULL,
  Alt = 600,
  Tbase1 = 9,
  Tbase2 = 45,
  Topt1 = 26,
  Topt2 = 32,
  alpha = 1.26
)

Arguments

env.data	data.frame. A get_weather() output.
PREC	character. Indicates the column of precipitation.
Tdew	character. Indicates the column of dew/frost.
Tmin	character. Indicates the column of minimum temperature.
Tmax	character. Indicates the column of maximum temperature.]
RH	character. Indicates the column of reative humidity.
Rad	character. Indicates the column of solar radiation. This parameter can be calculated from Param_Radiation().
G	numeric. Flux of heat conducted into the ground. Default is 0.
Alt	numeric. Elevation above sea level (meters)
Tbase1	numeric. Minimum cardinal value for temperature base for phenological development (Celsius).
Tbase2	numeric. Maximum cardinal value for temperature base for phenological development (Celsius).
Topt1	numeric. Lower temperature bound for phenological development (Celsius).
Topt2	numeric. Upper temperature bound for phenological development (Celsius).
alpha	Alpha of Priestley & Taylor's (1972) equation. Default is 1.26, which fit data from most sources.

Details

This function is old. P requires a dataframe with all parameters listed above. If any is missing, an error will be returned. The estimated variables are:

• n: Actual duration of sunshine (hour)

• N: Daylight hours (hour)

• RTA: Extraterrestrial radiation (MJ/m^2/day)

• SRAD: Solar radiation (MJ/m^2/day)

• SPV: Slope of saturation vapour pressure curve (kPa.Celsius)

• VPD: Vapour pressure deficit (kPa)

• ETP: Potential Evapotranspiration (mm.day)

• PEPT: Deficit by Precipitation (mm.day)

• GDD: Growing Degree Day (oC/day)

• FRUE: Effect of temperature on radiation use efficiency (from 0 to 1)

• T2M_RANGE: Daily Temperature Range (oC day)

Value

Returns a get_wheather() object with an additional set of parameters calculated from the nasapower data.

Author(s)

Germano Costa Neto

Examples

## Not run: 
### Fetching weather information from NASA-POWER
env.data = get_weather(lat = -13.05, lon = -56.05)

### Returning calculated parameters merged to the \code{get_weather()} dataframe
processWTH(env.data)

## End(Not run)

allogamous/EnvRtype documentation built on Nov. 1, 2024, 3:48 a.m.