Notes on the test files in this directory:
------------------------------------------

A basic check on the running of the 1D-Var refractivity 
retrieval applications ropp_1dvar/tools/ropp_1dvar_refrac
and ropp_1dvar/tools/ropp_1dvar_bangle can be invoked by
typing:

prompt> make test

This runs the following tests.

1) test_1dvar.sh, which tests the basic 1DVAR functionality;

2) test_1dvar_GRAS_bangle.sh, which carries out a 1D-Var retrieval using GRAS
bending angles and colocated ECMWF backgrounds;

3) test_1dvar_GRAS_refrac.sh, which carries out a 1D-Var retrieval using GRAS
refractivities and colocated ECMWF backgrounds;

4) test_1dvar_COSMIC_bangle.sh, which carries out a 1D-Var retrieval using COSMIC
bending angles and colocated Met Office backgrounds;

5) test_1dvar_COSMIC_refrac.sh, which carries out a 1D-Var retrieval using COSMIC
refractivities and colocated Met Office backgrounds;

6) test_1dvar_iono.sh, which carries out a 1D-Var retrieval using GRAS L1 and L2 
bending angles and a colocated ECMWF background.

In all cases the results are compared numerically against those in 
precalculated reference files, and if they agree within (quite exacting)
tolerances then the build is deemed to have passed the test.


ROPP Development Team
Met Office

Version 10.0
30 September 2020
