[Wrf-users] Wrf-users Digest, Vol 137, Issue 4

[jagan TNAU]

Calculating RH using O2, PSFC & T2

vap = q2*psfc*0.01/(0.622+(0.378*q2))'
svap = 6.112*exp((17.67*(t2-273.15))/((t2-273.15)+243.5))'
rh = 100*(vap/svap)'


On Thu, Jan 14, 2016 at 12:30 AM, <wrf-users-request at ucar.edu> wrote:

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> Today's Topics:
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>    1. geogrid runs with warning (afwande juliet)
>    2. How to calculate surface RH from wrfout file? (Sundar J)
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> Message: 1
> Date: Thu, 7 Jan 2016 11:06:10 +0300
> From: afwande juliet <afwandej965 at gmail.com>
> Subject: [Wrf-users] geogrid runs with warning
> To: wrfhelp <wrfhelp at ucar.edu>, wrf users group <wrf-users at ucar.edu>
> Message-ID:
>         <
> CANVsOoi3JU_ySLUOyDdfHJ2KhM3p3hVDrYT8FvwL41fiqf9hWg at mail.gmail.com>
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> Happy new  year all users
> I hope your new year is good. I am running wrf in new cluster .
> The geogrid.exe runs well with the below warning. How can I overcome this
> error? Does this error affect the accuracy of the model runs
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !  Successful completion of geogrid.        !
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> Warning: ieee_inexact is signaling
> FORTRAN STOP
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> Message: 2
> Date: Sun, 10 Jan 2016 17:40:17 +0530
> From: Sundar J <wrf.guy at gmail.com>
> Subject: [Wrf-users] How to calculate surface RH from wrfout file?
> To: wrf-users at ucar.edu
> Message-ID:
>         <
> CACPYNfvko4BYnzqvA+PZY7pXY9r_GjUxGBnnmk2+aiN0c-U1Nw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Dear wrf-users,
>
> What is the formula used for calculating surface RH from wrfout file?
>
> I have already extracted 'Q2', 'PSFC' and 'T2' variables from wrfout file.
> I am just searching for a formula which an convert these parameters to RH
> value.
>
> I am using python to calculate this value.
>
> Regards
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> End of Wrf-users Digest, Vol 137, Issue 4
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-- 
With regards

Dr.R.Jagannathan
Professor & Former Dean
Tamil Nadu Agricultural University
Coimbatore - 641 003 India

PHONE:  Mob: +91 94438 89891

DO NOT PRINT THIS E-MAIL UNLESS NECESSARY. THE ENVIRONMENT CONCERNS US ALL.
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