These packages are hosted here, mostly because there was no real upstream site any more. The source for these packages is maintained in my local SVN Repository since they all required updates for various reasons (mostly to conform to GCC/Glibc updates so they build properly with current build systems under Gentoo Linux).

Packages:

• GWOCSS - The GNU release of Winds On Critical Streamline Surfaces, a diagnostic windfield model suitable for complex terrain with a flexible I/O structure (sample data included). The main author and user of WOCSS over the years has been Francis Ludwig, with many other contributors, as evidenced by the long (and still growing) list of WOCSS-related publications. See this master's thesis by Shawn Gallaher for detailed information about the model (also the list of publications in the README file). This overview document was originally written for a data and modeling CD that was part of a field experiment done several years ago, so some of the details have changed. That said, it's the best overview currently available that's not an official journal publication.

  WOCSS provides multiple levels of wind output, as well as optional gridded data such as pressure, potential temperature, and bulk Richardson Number. As seen in the above thesis and other publications, the model has fairly minimal and flexible data input requirements, and can be used in numerous practical applications, such as:

  • Local/regional wind modeling - WOCSS is currently run for the SF Bay area to support, among other things, wind stress calculations for tide forecasts. See the Port District's Real-Time San Francisco Bay Wind Patterns site for live model output and other info (put together and hosted by the Western Region USGS office and the SJSU Meteorology Dept).
  • Transport and diffusion applications - WOCSS has been evaluated against numerous data sets and other windfield models, as well as coupled with several different plume and puff diffusion models (see publication list), including several environmental tracer studies. If you have a source and diffusion model that accepts gridded meteorological data, WOCSS can drive it (as long as you also have a handful of observational data or forecast model grids).
  • Post-processing forecast model output - this is really the topic of the thesis above, where the author used WOCSS to downscale the relatively coarse forecast model grids in a complex coastal environment. This results in a huge speed improvement, higher resolution, and in many cases, higher accuracy than waiting for the finer-scale forecast model output (especially in the presence of complex terrain). Since WOCSS is a diagnostic model, it runs orders-of-magnitude faster than a prognostic model, even with a substantial increase in both horizontal and vertical resolution.

  You can browse the GWOCSS source or download it here.

• XGKS-PMEL - The PMEL version of XGKS, an X-windows port of the ANSI Graphical Kernel System. The sourceforge version doesn't seem to have had much activity for several years, so this PMEL version has been bundled with Ferret as a required dependency (one of their primary visualization tools). The version hosted here is basically the PMEL version with updates for building with newer versions of gcc, glibc, binutils, etc.

  You can browse the xgks-pmel source or download it here.

• liblist - A generic list/stack/queue package (written in C) with a nice reference paper included. This relatively simple library was written several years ago by Bradley Spatz and released under the GPL. The version hosted here has minor updates to make it conform to the newer GNU toolchain, and is another required dependency for Ferret (it's also interesting to compare this library to the Ada versions of the list, stack, and queue generic packages hosted here).

  You can browse the liblist source or download it here.

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