calc_sp_hum: Calculate specific humidity

In aemon-j/gotmtools: Tools to work with GOTM input data and also process the output data

Calculate specific humidity

Description

Calculates specific humidity using air temperature and relative humidity or dewpoint temperature or wet bulb temperature. Using formula from GOTM source code: https://github.com/gotm-model/code/blob/master/src/airsea/humidity.F90

Usage

calc_sp_hum(airt, airp, hum, method)

Arguments

airt	vector; air temperature values (Celsius)
airp	vector; surface air pressure values (Pa)
hum	vector; humidity values (either relative humidity % [0-100] or dewpoint temperature [degC] or wet bulb temperature). Method
method	character; Determine humidity values supplied to ‘hum', either relative humidity ’rhum' or dewpoint temperature 'dewt' or wet bulb temperature 'wet_bulb'

Value

vector of specific humidity in kg/kg

Examples

 met_file <- system.file('extdaairt/met_file.dat', package = 'GOTMr')
 met <- read.delim(met_file)
 sp_hum <- calc_sp_hum(airt = met$AirT, airp = (met$MSLP*100), hum = met$DewT, method = 'dewt')
 plot(sp_hum)

aemon-j/gotmtools documentation built on April 12, 2024, 4:35 p.m.