[RegCNET] RegCNET Digest, Vol 438, Issue 4

[Yu-Bin Li]

Hello Dr. R.Jagannathan,

  From the SRF output you can have tas, qas and ps. 
        float tas(time, m2, iy, jx) ;
                tas:long_name = "Near surface air temperature" ;
        float qas(time, m2, iy, jx) ;
                qas:long_name = "Near surface air specific humidity" ;
        float ps(time, iy, jx) ;
                ps:long_name = "Surface Pressure" ;

Transform their units to temperature (T, Degree Celsius), pressure(P, hPa)
and specific humidity(Q, kg/kg), the relative humidity (RH, %) can be
calculated by:

     pvapor_saturated = 6.11*10^(7.5*T/(237.3+T))

     rh =  Q * P / (0.622+0.378*Q) / pvapor_saturated *100

 Regards,
 Yubin



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Contents:

   1. calculating RH from REGCM44 output (jagan TNAU)


----------------------------------------------------------------------

From: jagan TNAU <jagan at tnau.ac.in>
Subject: [RegCNET] calculating RH from REGCM44 output

Dear all,

I want to calculate Relative Humidity at 2 m height from the outputs of
RegCM4.4 outputs. I request that some body can help me as this is important
for our agricultural crop weather relationship

--
With regards

Dr.R.Jagannathan
Professor of Agronomy
Agro Climate Research Centre
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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