tropo

This application creates a tropopause data set from meteorological data.

# calling tropo
$ ./tropo  <ctl> <tropo.nc> <met0> [<met1> ...]

The required arguments are: * ctl: The file containing the control parameters. * tropo.nc: The output file in which the climatology should be stored. * met0 [\<met1> ...]: The meteorological data from which the data set should be created.

The following paramerters can be defined in <.ctl> file: | parameter | description | default | Options | |:---------- |:---------------------------------------------- | ------- | -------------------------------------------------- | | DT_MET | time step of meteorological data [s]. | 21600 | | | MET_TROPO | tropopause definition | 3 | 0:none, 1:clim, 2:cold point, 3:WMO_1ST, 4:WMO_2nd, 5:dynamical | | MET_TROPO_PV | dynamical tropopause threshold (PV) | 3.5 | | TROPO_LON0 | minimum longitude | -180 | | | TROPO_LON1 | maximum longitude | 180 | | | TROPO_DLON | distance between longitudes | -999 | | | TROPO_LAT0 | minimum latitude | -90 | | | TROPO_LAT1 | maximum latitude | 90 | | | TROPO_DLAT | distance between latitudes | -999 | | | TROPO_H2O | extract water vapor mixing ratio at tropopause | 1 | | | TROPO_O3 | extract ozone volume at tropopause | 1 | | | | | | |

Example:

# define the control file
cat > tropo.ctl <<EOF
DT_MET = 21600  
MET_TROPO = 2
TROPO_DLON = 6
TROPO_DLAT = 3
EOF
# running the tropo application
../src/tropo tropo.ctl tropo_2011_06_05.nc ../ei_2011_06_05_00.nc ../ei_2011_06_06_00.nc

here: * ../src/tropo: calling tropo * tropo.ctl: using control file * tropo_2011_06_05.nc: output of the tropopause * ../ei_...: inputs of the meteorological data (data directory should be indicated) * At JSC, Era_interim data can be found: /p/fastdata/slmet/slmet111/met_data/ecmwf/era_interim/pressure_0.75deg_v2/nc/2011/ei_...nc