ucar.visad.quantities
Class PseudoAdiabaticLapseRate

java.lang.Object
  ucar.visad.quantities.Quantity
      ucar.visad.quantities.ScalarQuantity
          ucar.visad.quantities.PseudoAdiabaticLapseRate

public class PseudoAdiabaticLapseRate
extends ScalarQuantity

Provides support for the latent heat of evaporation.

Version:

$Id: PseudoAdiabaticLapseRate.java,v 1.12 2005/05/13 18:35:42 jeffmc Exp $

Author:

Steven R. Emmerson

Field Summary

protected static Real	epsilonL (waterVaporMolecularWeight / dryAirMolecularWeight) latentHeatOfEvaporation
protected static Real	epsilonL2OverCSubPRSubD ((waterVaporMolecularWeight / dryAirMolecularWeight) latentHeatOfEvaporation.pow(2)) (dryAirSpecificHeatCapacity * dryAirGasConstant)
protected static Real	lOverRSubD The latent heat of evaporation divided by the dry air gas constant.
protected static Real	one The dimensionless quantity one.

Method Summary

static Data	create(Data pressure, Data temperature) Creates a pseudo-adiabatic lapse-rate data object from data objects for in-situ air pressure and temperature.
static RealType	getRealType() Obtains the RealType associated with this class.
static void	main(String[] args) Tests this class.

Methods inherited from class ucar.visad.quantities.ScalarQuantity

getRealType, getRealType, realType

Methods inherited from class ucar.visad.quantities.Quantity

realTupleType, setRealTupleType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

one

protected static Real one

The dimensionless quantity one.

lOverRSubD

protected static Real lOverRSubD

The latent heat of evaporation divided by the dry air gas constant.

epsilonL

protected static Real epsilonL

(waterVaporMolecularWeight / dryAirMolecularWeight) latentHeatOfEvaporation

epsilonL2OverCSubPRSubD

protected static Real epsilonL2OverCSubPRSubD

((waterVaporMolecularWeight / dryAirMolecularWeight) latentHeatOfEvaporation.pow(2)) (dryAirSpecificHeatCapacity * dryAirGasConstant)

Method Detail

getRealType

public static RealType getRealType()
                            throws VisADException

Obtains the RealType associated with this class.

Returns:

The RealType associated with this class.

Throws:

VisADException - Couldn't perform necessary VisAD operation.

create

public static Data create(Data pressure,
                          Data temperature)
                   throws TypeException,
                          VisADException,
                          RemoteException

Creates a pseudo-adiabatic lapse-rate data object from data objects for in-situ air pressure and temperature. Reasonable approximations are used.

Parameters:

pressure - The in-situ air pressure data object.

temperature - The in-situ air temperature data object.

Returns:

The lapse-rate data object corresponding to the input arguments.

Throws:

TypeException - An input argument has wrong type.

VisADException - Couldn't create necessary VisAD object.

RemoteException - Java RMI failure.

main

public static void main(String[] args)
                 throws Exception

Tests this class.

Parameters:

args - Arguments, Ignored.

Throws:

Exception - Something went wrong.