source: lmdz_wrf/branches/LMDZ_WRFmeas/WRFV3/README @ 1577

Last change on this file since 1577 was 415, checked in by lfita, 10 years ago

Getting only the necessary files

File size: 4.0 KB
RevLine 
[415]1 ** WRFmeas: Introducing real measurements in WRF **
2L. Fita, LMD. May 2013
3more details in http://www.lmd.jussieu.fr/~lflmd/WRFmeas
4
5With the new set of observations taking place in the HyMeX (http://www.hymex.org) experiment, (including lidar, iso-baric-baloons, flights...), a new way to validate WRF runs is open. These measurements used to be a very high temporal resolutions (seconds) with very specific characteristics. Thus, in the scope of the REMEMBER (http://climserv.ipsl.polytechnique.fr/hymex-remember) project and keeping in mind the HyMeX observational data-set WRFmeas, has been designed. Basically it envisages a way to introduce the necesary modifications in the WRF model in order to retrieve from model runs a similar observational data-set as if the measurement was tacking in real inside the simulation domain.
6
7* LIDAR
8A series of modules have been created in order to obatin a lidar output in the model. Mostly, all the vertical profile of a series of values at each time-step in a given grid point (closest to the station). It works similar as in the time-series capabilities. With an external ASCII file, user defines the locations and names of the station. Model will output and independent ASCII file for each station
9
10 - lidarlist: ASCII file with the name and location of the stations (exactly as 'tslist')
11#-----------------------------------------------#
12# 24 characters for name | pfx |  LAT  |   LON  |
13#-----------------------------------------------#
14Athens                    ath    37.964   23.736
15Rome                      rom    41.872   12.486
16Girona                    gir    41.985    2.832
17
18 - Variables: height, pressure, x-wind direction, y-wind direction, z-wind direction, potential temperature, water vapor mixing ratio, cloud mixing ratio, rain mixing ratio, snow mixing ratio, hail mixing ratio, ice mixing ratio, graupel mixing ratio, air density, cloud fraction
19 - Modifcations of WRF code: All the modifcations are contained in this tar file (WRF v3.3): WRFmeas_lidar.tar.gz. To compile it, decompress, and compile with the precompilation flag (in the configure.wrf file, after -DNETCDF) -DWRFMEAS
20 - Output in files [pfx].LIDAR.d[nn]:
21[stname]             [iddom]  [idst] [pfx]   ( [real lat],   [real lon]) (  [x-grid point],  [y-grid point]) ( [WRF lat],  [WRF lon])  [WRF elevation] meters. simulation start time: [YYYY]-[MM]-[DD]_[HH]:[MI]:[SS]
22new_time  [iddom]     [time since simulation start (h)]    [stid]   [xgrid]   [ygrid]   [psfc]   [rainc]   [rainnc]   [tot dry mas]
23       k          z [m]        p [hPa]       u [ms-1]       v [ms-1]       w [ms-1]      t_pot [k]    qv [kgkg-1]    qc [kgkg-1]    qr [kgkg-1]    qs [kgkg-1]    qh [kgkg-1]    qi [kgkg-1]    qg [kgkg-1]  dens [kg m-3]     cldfra [1] __________
24       [z level] [height] [pressure] [x-wind direction] [y-wind direction] [z-wind direction] [potential temperature] [water vapor mixing ratio] [cloud mixing ratio] [rain mixing ratio] [snow mixing ratio] [hail mixing ratio] [ice mixing ratio] [graupel mixing ratio] [air density] [cloud fraction]
25       (...)
26       [z_maxlevel] [height] [pressure] [x-wind direction] [y-wind direction] [z-wind direction] [potential temperature] [water vapor mixing ratio] [cloud mixing ratio] [rain mixing ratio] [snow mixing ratio] [hail mixing ratio] [ice mixing ratio] [graupel mixing ratio] [air density] [cloud fraction]
27new_time  [iddom]     [time since simulation start (h)]    [stid]   [xgrid]   [ygrid]   [psfc]   [rainc]   [rainnc]   [tot dry mas]
28       k          z [m]        p [hPa]       u [ms-1]       v [ms-1]       w [ms-1]      t_pot [k]    qv [kgkg-1]    qc [kgkg-1]    qr [kgkg-1]    qs [kgkg-1]    qh [kgkg-1]    qi [kgkg-1]    qg [kgkg-1]  dens [kg m-3]     cldfra [1] __________
29       (...)
30
31 - utils:
32  > LIDAR_ASCII_netCDF.py: Python to create a netCDF with all the ASCII content
33  > plot_lidar.py: Python to plot the values from the netCDF file
34  > nc_var_tools.py: python suit of netCDF utilities
35  > drawing_tools.py: python suit of plotting utilities
Note: See TracBrowser for help on using the repository browser.