latent_penman.RdCalculates the latent heat flux using the Penman-Monteith equation. Negative heat flux signifies flux away from the surface, positive values signify flux towards the surface.
latent_penman(...) # S3 method for POSIXt latent_penman(datetime, v, t, hum, z = 2, rad_bal, elev, lat, lon, ...) # S3 method for weather_station latent_penman(weather_station, ...)
| ... | Additional parameters passed to later functions. |
|---|---|
| datetime | POSIXt object (POSIXct, POSIXlt). See base::as.POSIXlt and base::strptime for conversion. |
| v | Wind velocity in m/s. |
| t | Temperature in degrees C |
| hum | Relative humidity in %. |
| z | Height of measurement for t, v in m. |
| rad_bal | Radiation balance in W/m^2. |
| elev | Elevation above sea level in m. |
| lat | Latitude in decimal degrees. |
| lon | Longitude in decimal degrees. |
| weather_station | Object of class weather_station |
Latent heat flux in W/m^2.