Guide to the Global Observing System

The main purpose of this guide is to provide practical information on the development, organization, implementation and operation of the Global Observing System in order to enhance both the participation of individual Members in the System and the benefits they may obtain from it. The Guide explains and describes Global Observing System practices, procedures and specifications and is aimed at assisting the technical and administrative staff of National Meteorological Services responsible for the networks of observing stations in preparing national instructions for observers.