= Contributions to the PALM code since 1997 =

||='''Year '''  =||='''Feature'''  =||='''Author(s)'''  =||
||March 1997   ||Start with code layout development  ||Siegfried Raasch ||
||May 1997     ||Start programming   ||Siegfried Raasch  ||
||July 1997    ||Dynamic core and FFT-solver  || Siegfried Raasch ||
||August 1997  ||Dry version finalized  || Siegfried Raasch ||
||1999         ||Passive Lagrangian particles  ||Siegfried Raasch
||2000         ||Simple cloud physics (Kessler) ||Michael Schröter ||
||2001         ||Multigrid-solver  ||Jörg Uhlenbrock, Siegfried Raasch ||
||2002         ||Cache optimization, 1D-decomposition optimized FFT-solver  ||Klaus Ketelsen  ||
||2004         ||Non-cyclic boundary conditions   ||Micha Gryschka, Siegfried Raasch  ||
||2005         ||NetCDF support  ||Marc Rautenhaus, Siegfried Raasch  ||
||2005         ||First version of Lagrangian cloud droplets ||Yign Noh (concept), Siegfried Raasch  ||
||2007         ||Ocean option with salinity equation  ||Siegfried Raasch  ||
||2007,2008    ||Topography   ||Marcus Letzel, Siegfried Raasch  ||
||2009         ||Wicker-Skrmarock advection scheme  ||Matthias Sühring  ||
||2012         ||Two-moment cloud-micropyhsics scheme (Seifert & Beheng)  ||Fabian Hoffmann  ||
||2012         ||Start with GPU-porting    ||Siegfried Raasch  ||
||2013         ||Overlapping calculation/communication in FFT-solver ||Klaus Ketelsen  ||
||2014         ||Multigrid optimization  ||Klaus Ketelsen  || 
||2014         ||Completely revised and optimised Lagrangian particle model with new data structure  ||Klaus Ketelsen, Fabian Hoffmann  ||
||2015         ||Radiation and land surface model  ||Björn Maronga  ||
||2016         ||Revised surface flux model  ||Björn Maronga  ||
||2016         ||3d-nesting  ||Antti Hellsten, Klaus Ketelsen, Siegfried Raasch  ||