tas2ws: Saturation pressure calculation

In SantanderMetGroup/convertR: A climate4R Package for Unit Conversion and Variable Derivation

Saturation pressure calculation

Description

Calculates the saturation pressure using near-surface air temperature and surface pressure data

Usage

tas2ws(tas, ps)

Arguments

tas	Near-surface air temperature
ps	Surface pressure

Details

The vapour pressure of water is the pressure at which water vapour is in thermodynamic equilibrium with its condensed state. At higher pressures water would condense. At this equilibrium condition the vapor pressure is the saturation pressure.

Value

A climate4R CDM grid of water vapor saturation pressure (in atm)

Input units

In principle, the derivation functions will work regardless of the input units, as all units are internally converted as necessary according to the specific formulae definitions. However, the units string (see getGridUnits) must be parseable. In the same vein, the input units need to be convertible to the required ones. Unit consistency is internally achieved by the function udConvertGrid.

Author(s)

J. Bedia, S. Herrera

References

• Gregory, D. (2000), Atmospheric thermodynamics. By Craig F. Bohren and Bruce A. Albrecht. Oxford University Press. xiv + 402 pp. Price £49.50 (hardback). ISBN 019 5099044. Q.J.R. Meteorol. Soc., 126: 2631-2632. doi:10.1002/qj.49712656815

See Also

Other derivation: hurs2huss(), hurs2tdps(), hurs2w(), huss2hurs(), huss2pvp(), ps2psl(), psl2ps(), rad2cc(), tdps2hurs()

Other humidity: hurs2huss(), hurs2tdps(), hurs2w(), huss2hurs(), huss2pvp(), tdps2hurs()

Other pressure: huss2pvp(), ps2psl(), psl2ps()

Examples

data("ps.iberia")
data("tas.iberia")
ws <- tas2ws(tas.iberia, ps.iberia)
## Not run: 
require(visualizeR)
spatialPlot(climatology(ws), backdrop.theme = "coastline")

## End(Not run)

SantanderMetGroup/convertR documentation built on June 30, 2023, 3:03 a.m.