How to use DDH in HARMONIE-AROME

1. To use DDH, set USEDDH="yes" in ecf/config_exp.h

2. Set TFLAG to minute (min) if you wish to have minute output. Note that the conversion of FA to grib format does not automatically work with this setting

3. Setting up the namelist (nam/harmonie_namelists.pm). Below is an example where point data for Dublin is extracted.

   %ddh=(
   NAMDDH => {
   'LFLEXDIA' => '.TRUE.,', # Must be TRUE
   'BDEDDH(1,01)' => '4.,', # 4 means a point
   'BDEDDH(2,01)' => '1.,',
   'BDEDDH(3,01)' => '-006.000000,', # Dublin lon
   'BDEDDH(4,01)' => '0053.000000,', # Dublin lat
   'LHDGLB' => '.FALSE.,',
   'LHDZON' => '.FALSE.,',
   'LHDDOP' => '.TRUE.,', # Must be TRUE
   'LHDPRG' => '.FALSE.,',
   'LHDPRZ' => '.FALSE.,',
   'LHDPRD' => '.FALSE.,',
   'LHDEFG' => '.FALSE.,',
   'LHDEFZ' => '.FALSE.,',
   'LHDEFD' => '.TRUE.,', # Must be TRUE
   'LHDHKS' => '.TRUE.,', # Must be TRUE
   'LHDMCI' => '.FALSE.,',
   'LHDENT' => '.FALSE.,',
   },
   );

4. Description of the variables