UtilitiesDewPoint2Humidity Method

Calculate the relative humidity (%) given the ambient temperature (°Celsius) and dew point (°Celsius)

Definition

Namespace: ASCOM.Tools
Assembly: ASCOM.Tools (in ASCOM.Tools.dll) Version: 3.0.0-rc.1+86c25ce733aebb4d8b1b8a62e84770ea5e972bea

C#

public static double DewPoint2Humidity(
	double DewPoint,
	double AmbientTemperature
)

VB

Public Shared Function DewPoint2Humidity ( 
	DewPoint As Double,
	AmbientTemperature As Double
) As Double

Double
Humidity expressed in percent (0.0 .. 100.0)

'Calculation uses the Vaisala formula for water vapour saturation pressure and is accurate to 0.083% over -20C - +50°C

http://www.vaisala.com/Vaisala%20Documents/Application%20notes/Humidity_Conversion_Formulas_B210973EN-F.pdf

InvalidOperationException	When dew point < absolute zero or > 100.0C>
InvalidOperationException	When ambient temperature < absolute zero or > 100.0C>

Supported in: 2.0