ucar.visad.quantities

Class SaturationVaporPressure

java.lang.Object

ucar.visad.quantities.Quantity

ucar.visad.quantities.ScalarQuantity

ucar.visad.quantities.Pressure

ucar.visad.quantities.SaturationVaporPressure

public class SaturationVaporPressure
extends Pressure

Provides support for the quantity saturation water vapor pressure. Instances are immutable.

Author:

Steven R. Emmerson

Field Summary

Fields

Modifier and Type	Field and Description
protected static visad.Real	two The dimensionless quantity two.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SaturationVaporPressure(java.lang.String name) Constructs from a name.

Method Summary

Modifier and Type	Method and Description
static visad.Data	create(visad.Data temperature) Creates a SaturationVaporPressure data object from a temperature data object.
static visad.Data	createTemperature(visad.Data eSat) Creates a temperature data object from a saturation water vapor pressure data object.
static visad.Data	createTemperature(visad.Data eSat, visad.RealType outputType) Creates a temperature data object from a saturation water vapor pressure data object.
static visad.RealTupleType	getRealTupleType() Obtains the RealTupleType associated with this class.
static visad.RealType	getRealType() Obtains the RealType associated with this class.
static visad.RealType	getTemperatureDerivativeRealType() Obtains the RealType of the derivative with respect to temperature.
static visad.Data	temperatureDerivative(visad.Data temperature) Returns the derivative of saturation vapor pressure with respect to temperature.

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

two

protected static visad.Real two

The dimensionless quantity two.

Constructor Detail

SaturationVaporPressure

protected SaturationVaporPressure(java.lang.String name)
                           throws visad.VisADException

Constructs from a name.

Parameters:

name - The name for this quantity.

Throws:

visad.VisADException - Couldn't create necessary VisAD object.

Method Detail

getRealType

public static visad.RealType getRealType()
                                  throws visad.VisADException

Obtains the RealType associated with this class.

Returns:

The RealType associated with this class.

Throws:

visad.VisADException - Couldn't perform necessary VisAD operation.

getRealTupleType

public static visad.RealTupleType getRealTupleType()
                                            throws visad.VisADException

Obtains the RealTupleType associated with this class.

Returns:

The RealTupleType associated with this class.

Throws:

visad.VisADException - Couldn't perform necessary VisAD operation.

getTemperatureDerivativeRealType

public static visad.RealType getTemperatureDerivativeRealType()
                                                       throws visad.VisADException

Obtains the RealType of the derivative with respect to temperature.

Returns:

The RealType of the derivative w.r.t. temperature.

Throws:

visad.VisADException - Couldn't perform necessary VisAD operation.

create

public static visad.Data create(visad.Data temperature)
                         throws visad.TypeException,
                                visad.UnitException,
                                visad.UnimplementedException,
                                visad.VisADException,
                                java.rmi.RemoteException

Creates a SaturationVaporPressure data object from a temperature data object. The algorithm is based on Bolton's 1980 variation of Teten's 1930 formula for saturation vapor pressure (see "An Introduction to Boundary Layer Meteorology" by Roland B. Stull (1988) equation 7.5.2d).

Parameters:

temperature - The temperature data object.

Returns:

Saturation water vapor pressure data object computed from the temperature. The type of the object will be that of the arguments after standard promotion.

Throws:

visad.TypeException - Argument has wrong type.

visad.UnitException - Inappropriate unit argument.

visad.UnimplementedException - Necessary operation not yet implemented.

visad.VisADException - Couldn't create necessary VisAD object.

java.rmi.RemoteException - Java RMI failure.

See Also:

VisADMath

temperatureDerivative

public static visad.Data temperatureDerivative(visad.Data temperature)
                                        throws visad.TypeException,
                                               visad.UnitException,
                                               visad.UnimplementedException,
                                               visad.VisADException,
                                               java.rmi.RemoteException

Returns the derivative of saturation vapor pressure with respect to temperature.

Parameters:

temperature - The temperatures at which to return the derivatives.

Returns:

The derivative w.r.t. temperature at the given temperatures.

Throws:

visad.TypeException - if a necessary RealType can't be created.

visad.UnitException - if unit-convertion failure occurs.

visad.UnimplementedException - if a necessary method is unimplemented.

visad.VisADException - if a core VisAD failure occurs.

java.rmi.RemoteException - if a Java RMI failure occurs.

createTemperature

public static visad.Data createTemperature(visad.Data eSat,
                                           visad.RealType outputType)
                                    throws visad.TypeException,
                                           visad.UnitException,
                                           visad.VisADException,
                                           java.rmi.RemoteException

Creates a temperature data object from a saturation water vapor pressure data object. The algorithm is based on Bolton's 1980 variation of Teten's 1930 formula for saturation vapor pressure (see "An Introduction to Boundary Layer Meteorology" by Roland B. Stull (1988) equation 7.5.2d).

Parameters:

eSat - Saturation water vapor pressure data object.

outputType - the RealType of the values

Returns:

Temperature data object computed from saturation water vapor pressures data object. The type of the object will be that of the arguments after standard promotion.

Throws:

visad.TypeException - Argument has wrong type.

visad.UnitException - Inappropriate unit argument.

visad.VisADException - Couldn't create necessary VisAD object.

java.rmi.RemoteException - Java RMI failure.

See Also:

VisADMath

createTemperature

public static visad.Data createTemperature(visad.Data eSat)
                                    throws visad.TypeException,
                                           visad.UnitException,
                                           visad.VisADException,
                                           java.rmi.RemoteException

Creates a temperature data object from a saturation water vapor pressure data object. The algorithm is based on Bolton's 1980 variation of Teten's 1930 formula for saturation vapor pressure (see "An Introduction to Boundary Layer Meteorology" by Roland B. Stull (1988) equation 7.5.2d).

Parameters:

eSat - Saturation water vapor pressure data object.

Returns:

Temperature data object computed from saturation water vapor pressures data object. The type of the object will be that of the arguments after standard promotion.

Throws:

visad.TypeException - Argument has wrong type.

visad.UnitException - Inappropriate unit argument.

visad.VisADException - Couldn't create necessary VisAD object.

java.rmi.RemoteException - Java RMI failure.

See Also:

VisADMath