|The role of communications for a meteorological organisation is to
facilitate the flow of data and processed products to meet the World
Meteorological Organisation's World Weather Watch ( WWW ) programme
requirements in a timely, reliable and cost effective way ensuring that
all World Meteorological Organisation ( WMO ) members have access to data
in accordance with approved procedures and within the limits of agreed
To meet these requirements the World Meteorological Organisation ( WMO ) has an integrated Global Telecommunication System ( GTS ) comprising of the Main Telecommunication Network ( MTN ), the Regional Telecommunication Network ( RTN ) and each member state has put in place a National Telecommunication Network ( NTN ).
The Communication Centre at the Kenya Meteorological Department headquarters in Nairobi serves as a Regional Telecommunications Hub ( RTH ) and collects observational data originating from its associated National Meteorological Centres and other RTHs not on the MTN and relays such data directly into the MTN. It selectively forwards data received from other NMCs and RTHs to its associated NMCs and RTHs not situated on the MTN. It performs quality checks on data from its area of responsibility and carries out monitoring of the operations of the GTS of the WWW.
For RTH Nairobi to handle the multiple roles it has an Automatic Message Switching System (AMSS). This system called TRANSMET is composed of 2 Motorola Computers running UNIX. Each computer has 64 Mbytes RAM and 2 X 1.2 Gbytes hard disks. The system is equipped with eight X.25 (level 3) lines and 36 asynchronous lines. It can handle up to 64 Kbps and is capable of processing both alphanumeric and binary data. It can receive, store and re-transmit Coded Digital Facsimile ( CDF ) messages.