los_i3d

Check out and compile the used CLaMS programs:

• traj

• add_noonpos (package clams-tools )

• i3d

• cirrus

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_223.5-224.5.nc ! file with observer and view points
5)   /private/icg112/crista2/init/init_CR2_97081112.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                                    ! output directory
9)   cr2_ci2.0_NH_223-224_vp_and_los_np_cirrus.nc               ! output file
10)  y                                                          ! use positions at noon (y/n)
11)  n                                                          ! use cirrus (y/n), only for IWP
12)  y                                                          ! write data on LOS (y/n)
13)  /home/icg1/icg112/clams/clams-tools/add_noonpos_icg1060    ! executable add_noonpos
14)  /home/icg1/icg112/clams/traj/traj_icg1060                  ! executable traj
15)  /home/icg1/icg112/clams/i3d/i3d_icg1060                    ! executable i3d
16)  /home/icg1/icg112/clams/cirrus/cirrus_icg1060              ! executable cirrus
17)  2                    ! number of parameters
18)  IWC                  ! list of parameters
     SH
19)  1                    ! output type (1= weighted viewpoint data, 2= integrated 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 directory (for output file and temporary files)
9. Output filename
10. Specify, if the positions at noon should be calculated and used for interpolation
11. Specify, if the values for IWC should be corrected with the program cirrus
12. Specify, if the output file should also include the data for all line of sights
13. Name of executable program add_noonpos
14. Name of executable program traj
15. Name of executable program i3d
16. Name of executable program cirrus
17. Number of parameters to interpolate
18. Shortnames of parameters (one name per line)

19. Type of output data:
    1 = write weighted viewpoint data
    2 = write integrated viewpoint data
    

If output type 1 (weighted) is chosen, there must be two more specifications in the configuration file:

20)  bsp_data/crista.wgt       ! file with weights
21)  3        ! 1=distances along line of sight, 2=horizontal distances, 3=vertical distances