JMA operates two major computer systems; one is the Automated Data Editing and Switching System (ADESS) for the treatment of observational data and products, and the other is the Numerical Analysis and Prediction System (NAPS). ADESS is linked to individual JMA facilities for meteorological services as well as various related authorities (including both the central government and local governments) via exclusive landlines. To complement landline-based communication, JMA installed a communication channel through the Geostationary Meteorological Satellite (MTSAT-1R) for the delivery of earthquake reports and tsunami warnings due to the urgency and level of reliability required in disseminating such bulletins. NAPS is a super-computer system used for the computation of numerical weather predictions.
To cope with constantly increasing demand for computing performance and capacity, JMA updates NAPS with the latest high-performance computer every five years, and the most recent replacement was conducted in June 2018. ADESS and NAPS are collectively called the Computer System for Meteorological Services (COSMETS), and constitute a comprehensive system for data communication and processing.
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