= ROPP =

This is the feature request, issue and bug tracking web site for the '''Radio Occultation Processing Package''' (ROPP).

ROPP is a software package designed to assist users to assimilate radio occultation data from any RO mission into NWP and other models. The package is being developed through the EUMETSAT [http://www.grassaf.org/ GRAS SAF].

The latest full release of ROPP ('''ROPP-6 v6.0''') is currently available for users via the [http://www.grassaf.org/files.php GRAS-SAF web pages]. A minor update to ROPP-6 ('''v6.1''') is currently under development and is expected to be released to users before the end of 2012. The next full release, ROPP-7 ('''v7.0''') is expected to be released to users towards the end of 2013.

The ROPP deliverable source code is sub-divided into '''modules''':
 * '''ropp_tools''' : low-level utility routines
 * '''ropp_io'''    : I/O support for RO data in netCDF and BUFR files
 * '''ropp_pp'''    : preprocessor to derive refractivity and bending angle profiles from excess phase and amplitude [https://trac.grassaf.org/ropp/wiki/ROPP_PP_tree.html calling tree]
 * '''ropp_fm'''    : forward models (and associated tangent linear, adjoint & gradient code) [https://trac.grassaf.org/ropp/wiki/ROPP_FM_tree.html calling tree]
 * '''ropp_1dvar''' : 1D-Var retrieval & minimizer [https://trac.grassaf.org/ropp/wiki/ROPP_1DVAR_tree.html calling tree]

Supporting modules for documentation, testing and building the source are:
 * '''ropp_doc'''   : user and project documentation for ROPP
 * '''ropp_test'''  : 'Test Folder' system
 * '''ropp_bld'''   : build and configure scripts for ROPP and dependency packages

Further information on ROPP, including the Release Notes, Overview and module User Guides, is available from [http://garf.grassaf.org/software.php GARF].

== The ROPP Repository ==

This ROPP Repository can only be accessed by authorized developers - [https://trac.grassaf.org/ropp/login login required].

For instructions on how to access the ROPP repository (authorized users only) see the [https://trac.grassaf.org/ropp/wiki/ropp_repository instructions for developers].