Polyphemus 1.6

Operating systemsOS : Windows / Linux / Mac OS / BSD / Solaris
Program licensingScript Licensing : GPL - GNU General Public License
CreatedCreated : Mar 16, 2010
Size downloadDownloads : 8
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It is designed to yield up-to-date simulations in a ...

It is designed to yield up-to-date simulations in a reliable framework: aerosols, data assimilation, ensemble forecast and daily forecasts.
Its completeness allows to deal with many fields: photochemistry, heavy metals, radionuclides, etc. It is able to handle simulations from local to continental scale.
It even supports parallel computing, being implemented in its main module.
Both OpenMP and MPI API are supported and allow shared-memory, distributed memory or hybrid parallel schemes.
Most important functions of Polyphemus by Polyphemus Development Team:
• Several models: with Gaussian, Eulerian, Lagrangian . . . formulations;
• Several scales: from small/local scale to continental scale;
• Multiple polluants: passive, radionuclides, photochemistry, aerosols, . . .
• Processing from many inputs (meteorological models, ground data);
• Many advanced methods: data assimilation, ensemble forecasting, models coupling, etc.
Gaussian models:
• Stationary gaussian model and puff gaussian model
• Gas and aerosols
• Several parameterizations to compute the dispersion
Eulerian models:
• Castor (clone of the gas version of Chimere): passive and reactive versions
• Polair3D: passive, reactive, aerosol and adjoint (for gas) versions
• Modules for transport, chemistry and aerosols
Lagrangian models:
• Basic stochastic Lagrangian transport without scavenging nor deposition
• Particles related to the Horker and Fokker-Planck formulations
Driver list:
• "BaseDriver": forward simulations
• "StationaryModel": stationary solutions (for small/local scale)
• Optimal interpolation
• Ensemble Kalman filter
• Reduced-rank square root Kalman filter
• 4D-Var (and adjoint validation)
• Plume-in-grid model (couples a Gaussian model and an Eulerian model)
• Monte Carlo
• Perturbation driver (applying factors to input fields)
• Transport - Advection (DST3, PPM), diffusion (ROS2)
• Chemistry - RACM, RADM 2, Melchior, Radioactive or biological decay
• Aerosols - SIREAM (size-resolved module, semi-Lagrangian), SIREAM-AEC (same as SIREAM, with better treatment of organic matter), VSRM (clouds), Radioactive or biological decay.
• Output savers - Whole domain, list of points, boundary conditions (for nesting), deposition fluxes, etc.
Meteorological fields:
• Vertical diffusion: Louis and Troen&Mahrt
Ground data:
• Land use cover: USGS, GLCF
• Emissions from EMEP
• Biogenic emissions (Simpson et al. , 1999), sea salt
• Dry deposition: Emberson, Wesely and Zhang
Boundary conditions:
• Mozart 2, Inca
• Gocart
• SeldonData - Interpolations, input/output operations, etc.
• AtmoData - Extension of SeldonData to atmospheric sciences, physical parameterizations: meteorology, emissions, aerosols, etc.
• AtmoPy - Visualization, postprocessing, statistics, observations, ensemble forecasts, etc.
• Talos 1. 2 or higher
• SeldonData 1. 6. 3 or higher
• AtmoPy 1. 7 or higher
• AtmoData 1. 4 or higher
News in the current Polyphemus 1.6 version:
• Overhauled the parallelization
• Added two SCons options for the command line
• Added support for WRF, with "meteo/WRF-meteo. cpp".
Lagrangian stochastic models:
• Added the model 'LagrangianTransport' to solve stochastically the advection-diffusion of gaussian kernel particles. For the particles, 'Horker' and 'Fokker-Planck' formulations have been implemented.
Gaussian models:
• Added support for continuous line sources in the model 'GaussianPlume'.
• Modified the program "discretization. cpp".
• For the module 'AerosolRACM_SIREAM', added a patch for ISORROPIA 1. 7 (2009-05-27) to be applied if the OpenMP parallelization is used.
• For the module 'AerosolRACM_SIREAM_AEC', added a new patch for the last release of ISORROPIA 1. 7 (2009-05-27).
• For the modules 'AerosolRACM_SIREAM' and 'AerosolRACM_SIREAM_AEC', added the display option "Show_configuration".
Bug fixes:
• When compiling a program using an aerosol module, the SCons command line option "nacl" was implicitly always set to "yes".
• In the module 'SplitAdvectionDST3', the boundary conditions on the lowest and highest levels were not correctly assigned.
• In the preprocessing program MM5-meteo, results were shifted with an offset of 0. 5 cell.
• The programs polair3d-decay, polair3d-siream, polair3d-siream-aec and puff_aer could encounter a segmentation fault when compiled with recent versions of GNU GCC (posterior to 4. 3).
• In the simple aqueous submodule of the module 'AerosolRACM_SIREAM', the sulfate concentrations were wrongly computed because of a sign error.
• The program compute_tab that computes the Mie tabulation for the postprocessing program optics could abort with a segmentation fault.
• In the model 'Polair3DAerosol', some configuration checkings were not performed.
• In the module 'AerosolRACM_SIREAM', 'option_adaptive_time_step' was not always explicitly initialized.

Polyphemus 1.6 scripting tags: weather forecast, polyphemus, models, air quality, module, program, modeling system, gaussian. What is new in Polyphemus 1.6 software script? - Unable to find Polyphemus 1.6 news. What is improvements are expecting? Newly-made Polyphemus 1.7 will be downloaded from here. You may download directly. Please write the reviews of the Polyphemus. License limitations are unspecified.