PowerPoint Presentation - WRF Tutorial - Welcome - …：PowerPoint演示文稿- WRF教程-欢迎—….pptVIP

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PowerPoint Presentation - WRF Tutorial - Welcome - …：PowerPoint演示文稿- WRF教程-欢迎—….ppt

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PowerPoint Presentation - WRF Tutorial - Welcome - …：PowerPoint演示文稿- WRF教程-欢迎—…

WRF Tutorial For Version 2.2 / Synoptic Lab 10/3/2007 Robert Fovell rfovell@ Background on WRF model “Weather Research and Forecasting” Co-developed by research and operational communities ARW core “Advanced Research WRF” NMM core “Nonhydrostatic Mesoscale Model” Supercedes MM5 and Eta models Current version 2.2 Platforms include Linux and Mac OS X WRF advantages Better numerics than MM5 Arakawa C grid, R-K scheme, odd order advection w/ implicit diffusion Much less diffusive, larger effective resolution, permits longer time steps Better handling of topography than Eta (original NAM) NAM model is now WRF-NMM Fortran 95 (MM5 was F77) NetCDF, GRIB1 and GRIB2 Further advantages MPI from the ground up Allows real data and idealized simulations in same framework Plug-in architecture (different groups will supply WRF “cores”) Recently added: moving nests and nudging NetCDF output - many great tools such as NetCDF operators: / WRF disadvantages Bleeding edge Smaller range of physics choices (tho more modern) Software design is unintuitive for physical scientists Can take hours to compile But does not need frequent recompiling Comparatively slower than MM5 NetCDF files can be huge WRF and related software WRF Preprocessing System (WPS) Replaces/supercedes WRF SI WRF-ARW model Single node and MPI WRF postprocessing software RIP (read/interpolate/plot) GrADS Specific to “hurricane” Synoptic Lab environment Neglecting for now: GRIB2, ARWpost Web resources WRF model users site /wrf/users/user_main.html ARW users’ guide /wrf/users/docs/user_guide/contents.html WRF-ARW/WPS online tutorial /wrf/OnLineTutorial/index.htm WRF namelist description /wrf/users/docs/user_guide/users_guide_chap5.html#Nml Tutorial presentations /wrf/users/tutorial/tutorial_presentation.htm My resources This presentation (PPT format) /~fovell/WRF/wrf_tutorial_2007.ppt WRF on Mac OS X /~fovell/WRF/WRF_ports.html Setup on “hurricane” machines Environment setup …is the command line prompt If you don’t have