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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Volume 8, issue 8
Geosci. Model Dev., 8, 2515-2551, 2015
https://doi.org/10.5194/gmd-8-2515-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Geosci. Model Dev., 8, 2515-2551, 2015
https://doi.org/10.5194/gmd-8-2515-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Model description paper 13 Aug 2015

Model description paper | 13 Aug 2015

The Parallelized Large-Eddy Simulation Model (PALM) version 4.0 for atmospheric and oceanic flows: model formulation, recent developments, and future perspectives

B. Maronga1, M. Gryschka1, R. Heinze1, F. Hoffmann1, F. Kanani-Sühring1, M. Keck1, K. Ketelsen2, M. O. Letzel3, M. Sühring1, and S. Raasch1 B. Maronga et al.
  • 1Institute of Meteorology and Climatology, Leibniz Universität Hannover, Hannover, Germany
  • 2Software Consultant, Berlin, Germany
  • 3Ingenieurbüro Lohmeyer GmbH & Co. KG, Karlsruhe, Germany

Abstract. In this paper we present the current version of the Parallelized Large-Eddy Simulation Model (PALM) whose core has been developed at the Institute of Meteorology and Climatology at Leibniz Universität Hannover (Germany). PALM is a Fortran 95-based code with some Fortran 2003 extensions and has been applied for the simulation of a variety of atmospheric and oceanic boundary layers for more than 15 years. PALM is optimized for use on massively parallel computer architectures and was recently ported to general-purpose graphics processing units. In the present paper we give a detailed description of the current version of the model and its features, such as an embedded Lagrangian cloud model and the possibility to use Cartesian topography. Moreover, we discuss recent model developments and future perspectives for LES applications.

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The paper gives a detailed description of the PArallelized Large-eddy simulation Model (PALM) version 4.0 for the simulation of turbulent atmospheric and oceanic boundary layer flows. The model is optimized for use on massively parallel computer architectures and has been applied for various boundary-layer research studies over the last 15 years by various work groups all over the world. Besides the model description, we outline past PALM applications and also discuss future perspectives.
The paper gives a detailed description of the PArallelized Large-eddy simulation Model (PALM)...
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