LITFASS-2003

Purpose

This example shows the development of the convective boundary layer in the LITFASS region on May 30, 2003. The example was generated in the course of the LITFASS-2003 project (details).

Contact person(s)

Maronga, Björn?, Sühring, Matthias?

PALM version

r893

Required user code

Please find the user code attached​.

Parameter files

Please find the parameter files attached​.

Preprocessing

Surface data is required (see attached​). It must be placed in a directory that is accessible for the host on which PALM is executed (remote host). Modify the userpar parameter input_path to point to this directory.

Model run

The basic command is

mrun -d LITFASS-2003 -r "d3# ts# pr# xy# 3d# restart" -T 8 -t 10800 -X64

Please set other options, such as -h, -K, and -q according to your needs. Note that this example will require 64 processors for at least two hours. If you want to carry out this job with less processors, please adjust the parameter file. You can also carry out restarts.

Monitoring

Please find the run control file attached​.

Postprocessing

Studying the boundary layer in the LITFASS region, you will notice, that secondary circulations develop the course of the day. You can for example see such structures in the time-averaged 3D data in the data. Please note, however, that a time-average is not sufficient to completely separate the secondary circulations from the turbulent flow and an additional ensemble average is required to achieve this.