== BOMEX ==

=== Purpose === 
With this example trade wind cumulus convection under steady-state conditions can be studied.

=== Description === 
The setup is based on the [http://www.knmi.nl/~siebesma/BLCWG/ GCSS] LES intercomparison case [http://www.knmi.nl/~siebesma/gcss/bomex.html BOMEX] ([http://journals.ametsoc.org/doi/abs/10.1175/1520-0469%282003%2960%3C1201%3AALESIS%3E2.0.CO%3B2 Siebesma et al. (2003)]). It describes shallow cumulus convection in the trade wind region over the ocean. During the simulation cumulus clouds form. The cloud cover is about 0.2. Results from BOMEX simulations with PALM were published in Heinze et al. (2012) and Riechelmann et al (2012).

=== References ===
* '''Heinze, R., S. Raasch and D. Mironov, 2012: Budgets of scalar fluxes for cloudy boundary layers'''\\ 20th Symposium on Boundary Layers and Turbulence, Boston, MA, USA (talk) [https://ams.confex.com/ams/20BLT18AirSea/webprogram/Manuscript/Paper209161/heinze_ams20blt.pdf extended abstract]\\\\
* ''' ''Riechelmann, T.'', Y. Noh and S. Raasch, 2012:''' A new method for large-eddy simulations of clouds with Lagrangian droplets including the effects of turbulent collision. ''New J. Phys.'', '''14''', 065008, doi:[http://dx.doi.org/10.1088/1367-2630/14/6/065008 10.1088/1367-2630/14/6/065008]\\

=== PALM version ===
[[CRev(0,995)]]

=== Required user code ===
Please find the user code [[attachment:user_code.tar|attached]]. Small adjustments are required in `init_3d_model.f90` and `prandtl_fluxes.f90` for the BOMEX case in addition to the user routines. They can also be found in the attachment and have to be placed in the same directory as the user routines.

=== Parameter files ===
Please find the parameter file [[attachment:bomex_p3d|attached]]. 

=== Model run ===
The basic command is\\\\
{{{mrun -d bomex -r "d3# ts# pr# xy# 3d#" -X 32 -T 8 -t 1800}}}\\\\
Please set other options, such as {{{-h}}}, {{{-K}}}, and {{{-q}}}  according to your needs. Note that this example will require 8 processors for at least 10 minutes. If you want to carry out this job with less processors, please adjust the parameter file accordingly.

=== Monitoring ===
Please find the run control file [[attachment:bomex_rc|attached]]. 

=== Postprocessing ===
The results of the simulation are in accordance with the results of other LES models which took originally part in the LES intercomparison. For a quantitative comparison, the LES data of the models is available [http://www.knmi.nl/~siebesma/gcss/3dresults.html here].