los_i3d

Configuration file

The options for the execution of los_i3d are set in the configuration file los_i3d.inp: 

1)   10.                 ! distance between points [km]
2)   30.                 ! maximum altitude [km]
3)   5.   90.            ! lat_min, lat_max
4)   /private/icg112/crista2/netcdf/cr2_ci2.0_NH_220-221.nc   ! file with observer and view points
5)   /private/icg112/crista2/init/init_CR2_97080912.nc        ! clams data
6)   /usr/nfs/clams/icg134/crista2/ecmwf/links                ! directory with meteorological data
7)   ECZ                                                      ! prefix for meteorological data
8)   /private/icg112/crista2/los/cr2_ci2.0_NH_220-221_los.nc  ! output file
9)   y                                                        ! use positions at noon (y/n)
10)  n                                                        ! use cirrus (y/n), only for IWP
11)  y                                                        ! write data on LOS (y/n)
10)  /home/icg1/icg112/clams/clams-tools/add_noonpos_icg1060  ! executable add_noonpos
11)  /home/icg1/icg112/clams/traj/traj_icg1060                ! executable traj
12)  /home/icg1/icg112/clams/i3d/i3d_icg1060                  ! executable i3d
13)  /home/icg1/icg112/clams/cirrus/cirrus_icg1060            ! executable cirrus
14)  2                    ! number of parameters
15)  IWC                  ! list of parameters
     SH
16)  3                    ! output type (1=los data,2=viewpoint data (weighted), 3=vp data)

Remarks:

  1. Distance between points on line of sight in kilometers
  2. Maximum altitude for points on line of sight in kilometers
  3. Latitude range

  4. Netcdf file with observer and view points

  5. Clams file (used for interpolation)
  6. Directory with meteorological data

  7. Prefix for meteorological data (3 characters)
    The files with meteorological data are used for converting from (lat,lon,height) to (lat,lon,theta/zeta) and for getting NOONPOS

  8. Output filename
  9. Specify, if the positions at noon should be calculated and used for interpolation
  10. Specify, if the values for IWC should be corrected with the program cirrus
  11. Specify, if the output file should also include the data for all line of sights
  12. Name of executable program add_noonpos
  13. Name of executable program traj
  14. Number of parameters to interpolate
  15. Shortnames of parameters (one name per line)

  16. Type of output data:
    1 = write data for line of sight
    2 = write viewpoint data (weighted)
    3 = write viewpoint data (integrated)

If output type 2 (weighted) is chosen, there must be two more specifications in the configuration file: 

15)  bsp_data/crista.wgt       ! file with weights
16)  3        ! 1=distances along line of sight, 2=horizontal distances, 3=vertical distances