#acl ClamsUserGroup:read,write,delete,revert All:read

== los_i3d ==


Check out and compile the used CLaMS programs:
 * [[ traj ]]
 * traj_add
 * add_noonpos (package [[ ClamsTools | clams-tools ]] )
 * [[ i3d ]]
 * cirrus 


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

{{{
1)   30.                 ! distance between points [km], keep realistic in respect to CLaMS resolution
2)   25.  0.0            ! maximum altitude [km], Offset in altitude [km] for observation data
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 (IWC,CIWC,IWC_100) => integrated limb IWP   
19)  SH                   ! for all other prameter (e.g. SH, RADIUS) mean LOS value (SH_TP) 
20)  RADIUS
21)  2                    ! output type (1= weighted viewpoint data, 2= integrated vp data)
22)  y                    ! write control output (y/n)
23)  ZETA_DOT_clr         ! zeta_dot can be different in the met data (ZETA_DOT or ZETA_DOT_clr)
                          ! if the paramter (global) is not defined then use ZETA_DOT 
}}}
Remarks:

 1. Distance between points on line of sight in kilometers
 1. Maximum altitude for points on line of sight in kilometers
 1. Latitude range
 1. [[Netcdf file with observer and view points]]
 1. Clams file (used for interpolation)
 1. Directory with meteorological data
 1. Prefix for meteorological data (3 characters) <<BR>> The files with meteorological data are used for converting from (lat,lon,height) to (lat,lon,theta/zeta) and for getting NOONPOS
 1. Output directory (for output file and temporary files)
 1. Output filename
 1. Specify, if the positions at noon should be calculated and used for interpolation
 1. Specify, if the values for IWC should be corrected with the program cirrus
 1. Specify, if the output file should also include the data for all line of sights 
 1. Name of executable program add_noonpos
 1. Name of executable program traj
 1. Name of executable program i3d
 1. Name of executable program cirrus
 1. Number of parameters to interpolate
 1. Shortnames of parameters (one name per line)
 1. output names: IWC => IWP  or SH => SH_TP
 1. Type of output data: <<BR>> 1 = write weighted viewpoint data <<BR>> 2 = write integrated viewpoint data <<BR>>

If output type 1 (weighted) is chosen, there must be two more specifications in the configuration file, 
but this is sofar not in use and not consolidated:

{{{
21)  1                    ! output type (1= weighted viewpoint data, 2= integrated vp data)
22)  bsp_data/crista.wgt  ! file with weights
23)  3                    ! 1=distances along line of sight, 2=horizontal distances, 3=vertical distances
24)  y                    ! write control output (y/n)
25)  ZETA_DOT_clr         ! zeta_dot can be different in the met data (ZETA_DOT or ZETA_DOT_clr)
                          ! if the paramter (global) is not defined then use ZETA_DOT 
}}}

[[ los_i3d_doku ]]