Re: gsn_csm_pres_hgt

The original post did not provide enough information.
ncl-talk questionq should always include something about the variables
(eg: printVarSummary). Otherwise, people are guessing at what the poster
means or the structure of the data being used. Otherwise, there are
multiple emails which are quite time consuming.

---
Some approaches:
[1] Use the hydrostatic equation
         p = p0*exp(-g*(z-z0)/(R*T))
     where z0 and p0 are the reference levels.
     This could be done via array notation.
     The results will likely have to be interpolated to
     constant pressure levels.
[2] Perhaps for graphics you could use
 
http://www.ncl.ucar.edu/Document/Functions/Built-in/stdatmus_z2tdp.shtml
On 07/16/2013 01:17 PM, Mary Haley wrote:
> There is no opposite plotting function, unfortunately.
>
> My suggestion would be to convert your height values to hPa, change your coordinate arrays to be pressure instead of height, and then use gsn_csm_pres_hgt. You can go to our list of functions:
>
> http://www.ncl.ucar.edu/Document/Functions/list_alpha.shtml
>
> and do a browser search for the word "height". You will see a few functions that might do what you need, depending on what kind of data you have.
>
> --Mary
>
>
> On Jul 16, 2013, at 9:10 AM, Erika Folova wrote:
>
>> Just a quick question,
>>
>> I have a fortran output containing height cordinat in Km.
>> I know that a gsn_csm_pres_hgt function could automatically convert the data from hPa level to height level (km),
>> my question is, whether ncl has a function to do an opposite work, to plot
>> the height (km) to hPa level? any suggestion?
>>
>> Thank you
>> Erika,
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