Re: [Meteosatlib-info] Level 1.5 High Rate SEVIRI image data

[Daniele B. <dbr...@ar...>]

Hi, the actual developer(s) of meteosatlib are almost perpetually busy, 
so I'm going to try to answer the question but my knowledge on the 
subject is more on the sysadmin side rather than meteorological

On 22/05/2015 06:50, BasitAli Khan wrote:
> Hi there,
> I am new to satellite data processing for meteorological purposes. Have
> few questions
> 1.  I have received Level 1.5 High Rate SEVIRI image data  in  the
> native ".nat"  format. Eumetsat provides bulk data only in this format.
> I am wondering how can I read this and convert it to some more
> conventional data format such as netCDF/HDF or GRIB. My objective is to
> read the data and process dust RGB using three IR channels  from MSG2
> and MSG3
 >
 > 2. I wonder if I can use meteosatlib to do this conversion.

I'm not sure about the meaning of the ".nat format", if we're talking 
about HRIT files then the short answer is yes, and meteosatlib comes 
with a fancy python script that produces (among other things) dust RGB 
images from channels IR_087, IR108 and IR120

The long answer:
- you'll need EUMETSAT source code (PublicDecompWT.zip) for the 
decompression library (please see 
http://sourceforge.net/projects/meteosatlib/files/)
- the python script uses gdal-python: one of the components of 
meteosatlib is a gdal driver that enables gdal to understand RIT, SAF 
HDF5 and some netCDF satellite dialects

> 3. Secondly, I was trying to compile meteosatlib on my ubuntu 12.04 with
> gcc 4.6.0. But getting many errors. Do I have to use certain compiler
> flags for gcc on ubuntu?

Could you please specify the errors (and/or the output of ./configure)?

>
> 4. Is there any proper discussion forum for meteosatlib users or this
> mailing list is the only source of help?

The latter. There is also some basic information in the sourceforge wiki 
(http://sourceforge.net/p/meteosatlib/wiki/Home/)

Cheers,

Daniele