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During the past ten years a modern computerized telecommunication system has been operated and it is being

developed now . The telecommunication links consist of data links , links operating under X-25 Protocol ,

telephone and SSB which totally form national data transmission system. In the meantime , new systems and

The METCOM Meteorological Message Switching System is a high performance, reliable, well proven application that provides functionality for reception, distribution and storage of weather information.

The concept of modular software and hardware within Sigmex' suite of weather information software provides for configurations that can be tailored to suit individual customer requirements like the number of connections of various types required, the level of redundancy and/or fault-tolerance specified and the number of operators expected to be manning the system. It also ensures that upgrade paths from one configuration to another are straightforward. Additional software modules can easily be integrated, whether off-the-shelf or written for specific user requirements.
METCOM is available under Windows NT

The METCOM²⁰⁰⁰ system meets all the requirements of a node in the Global Telecommunications System (GTS) system and operates in accordance with the WMO regulations for Telecommunications (WMO Manual 386). The ability to interface with other networks such as AFTN and CIDIN is also supported.

The system supports a wide range of communication line speeds (50 baud up to very high speed links such as fast ethernet and ATM) and protocols such as ITA-2, IA-5, HDLC, X25, TCP/IP, FTP and even DECnet. Special interfaces, such as MDD and SADIS, radar and satellite imagery from local sources, and distribution of products over fax lines can be added as required.

The Oracle database has an SQL interface, allowing users to build their own applications calling on the same data resource.

The system performance is dependant on the system configuration. Using Oracle and High speed RISC processors, METCOM 2000_{can be sized to meet the most demanding
requirements.}

Meteorological Informations Systems, WAFS, Weather Briefing, ISCS, Message Switching, SADIS

METSAT²⁰⁰⁰ is an Image processing sub-system
of the METIS²⁰⁰⁰ Meteorological Forecasters Workstation.

This sub-system supports both Satellite and RADAR imagery. The system takes satelite imagery from a number of receiver systems from many third-party suppliers such as UKW, Dartcom, VCS and Tellonics. METSAT generates a consistent internal data structure so that it can then process any received image data in a user defined manner.

METSAT contains many routines and utilities for calibrating, reducing, enhancing, merging and sub-sampling imagery for the generation of image products. These image products can then be distributed to METIS ²⁰⁰⁰ forecaster workstations for integration into the main product displays.

It also provides a 'macro' language interface for the creation of automatic product generation scripts. These user defined scripts can be 'tagged' to a particular image so that the script is run automatically when the image has been received.

Meteorological Information Systems, WAFS, Weather Briefing, ISCS, Message Switching, SADIS

METIS²⁰⁰⁰ is a fully integrated Meteorological Forecasters Workstation.

The METIS system has been providing forecasters with the tools necessary for the generation of forecasts for more than 10 years.

In the modern forecast office, forecasters are presented with a vast array of data in different forms: images from radar and satellite systems, analysis and forecasts generated by Numerical Models and observation data from weather reporting stations. With all these different systems the forecasters desk can begin to look like a mission control room.

The METIS system eliminates the need for different display systems for each type of data. The various types of data are integrated in to a single system. Display of data is controlled by the user. The methods used are comprehensive but remain user friendly. 'Layers' of data may be switched on or off as required. Detail within each layer is controlled in a similar manner.

Data is ready for display as soon as it has arrived at the METIS ²⁰⁰⁰ system. Automated processing and screen updates allow the users to start work on forecast products much earlier than with conventional systems.

The METIS system uses a PCI based 64Bit RISC server to run the application and Oracle database. Visualisation tools are run on desktop PC's running Windows NT. This configuration enables users to integrate the METIS application alongside standard Office tools such as Word, Excel and PowerPoint.

Data from all the major weather and communications satellites can be ingested to the METIS database. Image Data, in high and Low resolution formats, from GOES, NOAA, METEOSAT and GMS are supported. Alphanumeric and binary data from METEOSAT (MDD and RDCP) and the ICAO SADIS and ISCS WAFS transmissions.

User annotation can be added to products for the generation of significant weather and other forecast charts.

Meteorological Informations Systems, ISCS, Weather Briefing, WAFS, Message Switching

The PC-METIS system is a meteorological data display station based on Microsoft Windows. When connected to a weather data source, such as the GTS or AFTN networks or an MDD, SADIS or ISCS satellite communications system, the PC-METIS system provides easy access to meteorological data, imagery and to facsimile charts transmitted from Bracknell, Washington, Offenbach and other meteorological centres.

PC-METIS provides a comprehensive set of tools for accessing and displaying both alphanumeric and graphical meteorological products. Meteorological messages can be retrieved from the database manually or automatically displayed and/or printed on arrival. A comprehensive 'Warning' utility lets the user specify criteria for generating warnings pr alerts on incomming messages. Specific data values within messages such as SYNOP and METAR can be checked against threshold values.

Graphical products can be displayed, manipulated and animated within the Windows environment. Users can add their own annotation to these images prior to printing or retransmission. Animation of TIF and fax products occurs in a ‘hot window’, so that the system remains available for use while the sequence is looping in the background.

A form based message editor provides templates for the creation of messages for transmission into GTS and AFTN networks. Forms for local variants of messages can very easily be created by the users.

Powerful automatic message routing functions enhance the PC-METIS networking capability for Workgroup environments. The PC-METIS can be used as a meteorological message switching system for offices and organisations with small budgets.

The PC-METIS system software is compatible with Microsoft Office applications.

There is a new system at the IRIMO which through a centralized system of PC network , the Head , Deputies and

Directors (totally 60 users) are connected to each other, and they can get access to information and data on management

Tehran has been designated as one of the nine Regional Telecommunication hub (RTH) centers in RA II. The zones of

Afghanistan, Bahrain, Iraq, Kuwait, Pakistan, Republic of Yemen, Saudi Arabia, Former USSR ( Central Asian Countries )

Tehran RTH has an Automated Data Transmission System for collection and dissemination of all observational data in

Tehran RTH has basic exchange programmes of observational data in RA II with New Delhi , Jeddah and Tashkent .

The connection with Jeddah is 2400 bps. RTH Tehran is collecting observational data from 158 synoptic and 11 upper air