News Announcements

June 20, 2003

The ARPS Version 5.0 Beta8 is our last freely available version. The last Fortran 77 version is 4.5.1. The latest version is called arps5.0.0IHOP_5, a temporal name for versions starting from its use for IHOP 2002 real time forecast. Since this version contains codes developed by WDT, there are license issues related to its use for commerical purposes. The ARPS Download page spells out the licensing agreement when you click on the Lastest Release link.

Links to Part I and Part II of the ARPS description papers can be found at the Document section. Another MAP Special issure paper on the status of ARPS and data assimilation can also be found at the same site.

January 18, 2001

ARPS Version 4.5.2 is available (for a while now) at the ARPS download site. It could well be the last maintanance version of ARPS in Fortran 77. The most significant change in this version (since 4.5.1) is a bug fix related to MPI run.

Status of ARPS 5.0: ARPS Version 5 Beta (arps5.5.0Beta2b currently) is now available at the same server. Version 5.0 is in Fortran 90 free format, converted according to ARPS Fortran 90 coding standard. Dynamic memory allocation has been implmented for most programs, and they have been used internally for research and real time forecast for the past two months. Some issues still remain (see also HISTORY for a rough list). For example, the adative grid feature is broken in this version and dynamic memory allocation has yet to be implemented in several less-often used programs. This version does require a Fortran 90 compiler. On Intel Linux platform, Portland Group's pgf90 is supported in makearps.