The http://www.noaaport.net/%|%Noaaport Broadcast System Processor%|% (Nbsp) is a software suite for receiving, processing and distributing the contents of the NOAAPORT weather data stream. (The NOAAPORT broadcast system provides a one-way broadcast communication of http://www.noaa.gov/%|%NOAA%|% environmental data and information in near real time to NOAA and external users. This broadcast service is implemented by a commercial provider of satellite communications utilizing C-band.)

The core module of Nbsp receives and unpacks the NOAAPORT data fragments, and stores the complete reassembled files in a ready-to-use format on a local disk. The files can then be processed further for particular applications.  

Nbsp includes a built-in [Tclhttpd] web server for re-broadcasting NOAAPORT data over the World-Wide Web.  The University of Puerto Rico maintains a reference Nbsp implementation whose publicly-accessible Tclhttpd server manages an average of over 100 Mb of throughput per minute [http://nbsp.opennoaaport.net:8015/nbsp/status/statplot.tml?type=0].

Nbsp takes its orders from a main configuration file and from various run control scripts at different stages. They are written in Tcl.

The Nbsp project includes several libraries for post-processing of weather data, including:

   TclGrads:   a library of procedures for executing commands in GrADS (Grid Analysis and Display System) from a Tcl script.

   TclGempak:   a library of procedures for executing http://www.unidata.ucar.edu/software/gempak/%|%Gempak%|% programs from a Tcl script.

   TclMetar:   a library of Tcl procedures for decoding Metar reports from a Tcl script.

   Tclssh:   a package of pure Tcl functions for executing Tcl scripts in a remote host. It is used by Nbsp to offload some long-running jobs in parallel to other computers.

[http://www.unidata.ucar.edu/software/gempak/grids/dset_gd_turb.gif]

[http://www.noaaport.net/examples/rad/n0rjua_20051119_1802.gif]

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