skew-T from ECMWF grid data

[Daniele Gandini]

Hello Mario,

it is very simple.

First you set on a lat-lon point and on all vertical levels:

'set lon 'lonp
'set lat 'latp
'set z 1 '_NLEV

then you run skew script written by Bob Hart that you can download from

http://moe.met.fsu.edu/~rhart/skew.html

 dummy=plotskew(tc,dewp,wspd,wdir,flagclr)

function plotskew(sndtemp,snddewp,sndspd,snddir)
*************************************************************************
*
* GrADS Script to Plot a SkewT/LogP Diagram
*
* Bob Hart

* Function Arguments:
*    sndtemp - temperature data (Celsius) as a function of pressure
*    snddewp - dewpoint data (Celsius) as a function of pressure
*    sndspd  - wind speed data (knots) as a function of pressure
*    snddir  - wind direction data as a function of pressure

.....

Bye

Daniele 


  ----- Original Message ----- 
  From: mario frangipane 
  To: GRADSUSR at LIST.CINECA.IT 
  Sent: Thursday, September 27, 2007 11:54 AM
  Subject: skew-T from ECMWF grid data



  Hello GrADS Users!
   
  I would like to create a skew-T diagram from grid data of ERA-40 archive (ECMWF).
   
  Can you help me in this?
   
  Thanks.
   
  Regards.

              Mario



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