Home > atmlab > h2o > thermodynamics > dew_point_temperature.m

dew_point_temperature

PURPOSE ^

DEW_POINT_TEMPERATURE Dewpoint temperature Td

SYNOPSIS ^

function Td = dew_point_temperature(ew)

DESCRIPTION ^

 DEW_POINT_TEMPERATURE  Dewpoint temperature Td
       
       dewpoint or dewpoint temperature is the temperature to
       which a given air parcel must be cooled at constant
       pressure and constant water vapor content in order
       for saturation to occur.
       (http://amsglossary.allenpress.com/glossary/search?id=dewpoint1)
       As such if e is the partial vapor pressure at T , the dew point
       must satisfy the equation ews(T) = ew 

 FORMAT    Td = dew_point_temperature(ew)
       
 ACCURACY  This function is as accurate as the function <e2T_eq_water>
           The function is based on the inverse of the Sonntag method
           which estimate saturated vapor pressure using temperature.
           For more details see the function <e2T_eq_water>

 OUT   Td  dewpoint temperature [K],
 IN    ew  equilibrium water vapor pressure [Pa], a scalar or a vector

 EXAMPLE:
       Td = dew_point_temperature(1500)
       Td = 286.1712

 2009-08-15   Created by Isaac Moradi.

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

DOWNLOAD ^

dew_point_temperature.m

SOURCE CODE ^

0001 function Td = dew_point_temperature(ew)
0002 % DEW_POINT_TEMPERATURE  Dewpoint temperature Td
0003 %
0004 %       dewpoint or dewpoint temperature is the temperature to
0005 %       which a given air parcel must be cooled at constant
0006 %       pressure and constant water vapor content in order
0007 %       for saturation to occur.
0008 %       (http://amsglossary.allenpress.com/glossary/search?id=dewpoint1)
0009 %       As such if e is the partial vapor pressure at T , the dew point
0010 %       must satisfy the equation ews(T) = ew
0011 %
0012 % FORMAT    Td = dew_point_temperature(ew)
0013 %
0014 % ACCURACY  This function is as accurate as the function <e2T_eq_water>
0015 %           The function is based on the inverse of the Sonntag method
0016 %           which estimate saturated vapor pressure using temperature.
0017 %           For more details see the function <e2T_eq_water>
0018 %
0019 % OUT   Td  dewpoint temperature [K],
0020 % IN    ew  equilibrium water vapor pressure [Pa], a scalar or a vector
0021 %
0022 % EXAMPLE:
0023 %       Td = dew_point_temperature(1500)
0024 %       Td = 286.1712
0025 %
0026 % 2009-08-15   Created by Isaac Moradi.
0027 
0028 Td = e2T_eq_water(ew);

Generated on Mon 15-Sep-2014 13:31:28 by m2html © 2005