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[IDV #XGO-279218]: how to calculate relative humidity from temp and dewpoint temp?

Dave,

There may not be a built-in formal to calculate relative humidity, but
this can easily be achieved through Jython. In fact, there is a very
similar example here to calculate dew point from the temperature, and
relative humidity:

http://www.unidata.ucar.edu/software/idv/docs/workshop/isl/JythonScripting.html

You will have to choose an approximation to calculate relative
humidity that you are satisfied with. I found a "Bulletin of the
American Meteorological Society" (BAMS) paper that describes various
methods to achieve this calculation.

http://journals.ametsoc.org/doi/pdf/10.1175/BAMS-86-2-225

Best Wishes,

Unidata IDV Support


> Full Name: dave
> Email Address: address@hidden
> Organization: china, NMC
> Package Version: 5.0 build date:2014-01-09 08:05 UTC
> Operating System: Windows 7
> Hardware: Java: home: C:\Program Files\IDV_5.0\jre version: 1.6.0_43 
> j3d:1.5.2 fcs (build4)
> Description of problem: Hi,
> With IDV jython, how to calculate relative humidity from temp and dewpoint 
> temp?
> Is there any existing function to do this? Very thanks!
> dave
> 
> 


Ticket Details
===================
Ticket ID: XGO-279218
Department: Support IDV
Priority: Normal
Status: Closed