PALM Technical Documentation

PALM core Governing equations atmosphere Governing equations ocean Pressure solver Turbulence closure Discretization Boundary conditions Initialization

Additional features Atmosphere-ocean coupling Cloud microphysics Grid nesting Lagrangian cloud model (LCM) Lagrangian particle model (LPM) Land surface model (LSM) Large-scale forcing Nudging Plant canopy model (PCM) Radiation models Wind turbine model (WTM)

Technical aspects Code documentation with Doxygen Data handling General code structure Machine-related information Parallelization and optimization Particle code structure Topography implementation User-code implementation

PALM Program Control

Model operation Overview Launching a simulation mrun? mrungui? Model setup example? Interactive mode and debugging? Simulation chains (Restarts & large-file handling) Monitoring a simulation PALM watchdog (batch jobs) Debugging a simulation Debugging options Error messages Simulation I/O Input/Output files Palm input data standard

Model setup Overview Steering of interactive / batch runs!!? PALM core parameters Initialization Runtime PALM feature parameters dvr graphics output Lagrangian particle model Land surface model Nesting Plant canopy model Radiation model Spectra output Synthetic Turbulence User defined Virtual flight model Wind turbine model Alphabetical list

Code extensions Overview Interfaces to PALM core Compiling and linking User-defined data output User-defined domains User-defined parameters

PALM Data I/O and Visualization

PALM I/O files Input/Output files Palm input data standard

NetCDF data output Overview Generation of a PALM netCDF file? Example of a PALM netCDF data set Masked data output

Visualization Plotting with palmplot (NCL) Postprocessing with IDL Visualization with dvr Visualization with VAPOR Creating animations with img2video Creating stereo images with img2stereo

PALM Tutorial

Theory, numerics, technical information Lecture presentations of PALM seminar 2017

Simple simulation examples Exercises of PALM seminar 2017 Exercises Convective boundary layer Neutral boundary layer Flow around building Land surface model Lagrangian & Eulerian dispersion modeling

Advanced simulation examples Overview Minimum set for simulating the CBL Topography? Turbulent inflow Ocean runs Coupled atmosphere-ocean runs Runs with large scale forcing and nudging Run with land surface model and coupled to the RRTMG radiation model

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PALM code development

• History of changes (2018-current)
• Code contributions ----> move to "About us" (MUST be updated before)
• Pre-processor directives? ----> should be mentioned somewhere in palmrun docu

Developers area

• Rules for developers
• Rules of documentation and naming conventions?
• PALM-4U development
• Code development with eclipse
• Known bugs --> What matters for standard users should be added to parameter descriptions!!
• Testsuite and Testserver
• OpenACC tests