Re: CloudSat and NCL

[1] ncl_convert2nc should work. PLease ftp the file so it
     can be examined.

     ftp ftp.cgd.ucar.edu
     anonymous
     email
     cd incoming
     put 2007001005141_03607_CS_2B-GEOPROF_GRANULE_P_R04_E02.hdf
     quit

[2] There is no functuon
           p = f(geometric_height)

[a] If you have the appropriate information (z0, p0) and
     geopotential height is useful, 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.

[b]
http://www.ncl.ucar.edu/Document/Functions/Built-in/stdatmus_z2tdp.shtml

     could also be used.

On 7/23/13 7:53 AM, Marston Johnston wrote:
> Hi,
>
> I'm trying to use NCL to bin CloudSat granules from 2007 and 2008. I'll be
> using the bin_sum function and modifying the example given in
>
> http://www.ncl.ucar.edu/Applications/Scripts/cloudsat_1.ncl.
> I have a few things I'd like to ask:
>
> 1.) I tried to convert the HDF files to netcdf, since I work mostly with
> netcdf files, but ncl_convert2nc failed to convert the files. I'm using NCL
> version 6.1.0. According to
> http://www.ncl.ucar.edu/Document/Tools/ncl_convert2nc.shtml, this function
> should be able to convert CloudSat files. The error I got is:
>
> *********
> ncl_convert2nc 2007001005141_03607_CS_2B-GEOPROF_GRANULE_P_R04_E02.hdf
> fatal:syntax error: line 1 before or near 2007001005141
> ncl_convert2nc 2007001005141
> ---------------------------^
>
> fatal:error in statement
> *********
>
> Ok, I can use ncl to read the hdd 4 data instead of converting first and
> this should be ok. But I'm curious as to why the conversion failed. Did I
> misunderstand the docs for NCL?
>
> 2.) The data is expressed on geometric height and I would like to express
> it on pressure levels instead. The temperature with in each profile is
> available in the granules. Can NCL do this? I did a quick search in the
> function list but to no avail.
>
> Appreciate the help,
> /M
>
>
>
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Received on Tue Jul 23 08:14:36 2013