Version 3.4 of the WRF Pre-Processing System (WPS) was released on April 6, 2012.

Also see 'Known Problems' in this release, which is updated as needed.

WPS Version 3.4

New Features

• Fixes for segfaults in geogrid and metgrid that were occurring when the WPS was built with certain compilers (thanks to Samuel Trahan and Christopher Harrop (NOAA))
• Switch to a new configuration script, which, among other things, makes use of the environment variables JASPERLIB and JASPERINC for GRIB2-enabled builds; the old script can still be used by running "./configure_old"; see the section "Installing the WPS" in Chapter 2 of the Users' Guide for details
• Support for a no-leap-year calendar, enabled by adding -DNO_LEAP_CALENDAR to CPPFLAGS in the configure.wps file before compiling
• Add new VARSSO (variance of sub-grid-scale orogoraphy) field in the GEOGRID.TBL file to support the topo_wind=1 option in WRF. Please download the new data set to be included in the geog/.
• Add new SSiB fields for SSiB land model option in WRF. Please download the new data set to be included in the geog/.
• Update the included g2 and w3 libraries to versions 1.2.4 and 2.0.1, respectively

Bug fixes

• Corrections for Southern-Hemisphere grids in the plotfmt utility
• Corrections to the NNRP.Vtable to avoid writing SPECHUMD at just the surface
• Update METGRID.TBL files to use missing values (-1.E30) for masked SST fields
• Minor fixes to the plotgrids.ncl script