[ncl-talk] Get Area average from a specified lat lon coordinates and plot vertical profile of value

[Dennis Shea]

If you are

Did you look at the NCL Applications page? There are numerous HDF & TRMM
examples.

http://www.ncl.ucar.edu/Applications

Click
http://www.ncl.ucar.edu/Applications/HDF.shtml

If you search fro A12 you will find:

http://www.ncl.ucar.edu/Applications/Scripts/hdf4sds_6.ncl

Look at figures and code.

There are many A12 variants so this my not be exactly what you want.
Still it shoud get you started.

   rad  = 4.0*atan(1.0)/180.0
   CLAT = cos(lat2d*rad)         :these are the weights

Let CLAT(:,:) be the weights for the subregion you want and cloudWaterPath
be the values for that region at that level

    wAvg = new(nlevel,float,cloudWaterPath at _FillValue)
    wAvg(level) = sum(CLAT*cloudWaterPath(:,:,level)/sum(CLAT)

Good Luck

===
-
If you are new to NCL *please* read the documentation.

http://www.ncl.ucar.edu/Document/Manuals/

  Mini-Reference Manual

A pair of tutorials created by *Karin Meier-Fleischer* and *Michael
Böttinger* of DKRZ <https://www.dkrz.de/> (Deutsches Klimarechenzentrum)
are also available.









On Thu, May 5, 2016 at 7:05 PM, Lyndon Mark Olaguera <
olagueralyndonmark429 at gmail.com> wrote:

> Hi all,
>
> I am reading TRMM 2A12 version 7 hdf file using ncl. I want to get the
> area average of cloudwater path for these coordinates
>
> Latitude: 2N to 28 N
> Longitude: 111 E to 139 E
>
> Is there an easy way to get the area average of cloud water path in ncl?
> Also, once I got the area average value, I want to plot the vertical
> profile since the trmm 2a12 data set has 28 layers.
>
>
> Many thanks in advance
>
> *Lyndon Mark P. Olaguera*
> Department of Physics
> Ateneo de Manila University
>
> Regional Climate Systems Group
> Manila Observatory
>
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