By the second half of the year, researchers and technicians who work with agriculture will be able to access the SATVeg international, an instrument that will encompass the whole of South America and not only Brazil. It will be an expansion of the web system for land planning and management based on satellite images that Embrapa made available in 2015. Users will be able to consult it in three languages - Portuguese, Spanish and English. The System for Time Series Analysis of Vegetation (Sistema de Análise Temporal da Vegetação - SATVeg) was developed by Embrapa Agricultural Informatics to enable the observation of time series of vegetation indices through satellite images. The system provides support to agricultural and environmental activities in the entire Brazilian territory and helps research institutions, universities and NGOs in studies on land use and cover. It enables one to identify urban areas, annual crops, sugarcane, pastures, or woods, for instance. The system also considers the high frequency with which agricultural areas in Brazil change. Thus it is possible to follow the cycle of an agricultural crop and its intensification, deforestation, and even detect flooding in floodplains. Before SATVeg, the analyses of historical series required robust image processing, and the production of graphs depended on specific technical knowledge. Nowadays, the algorithms developed in the system enable a more timely and efficient observation and monitoring of vegetation indices, as graphs are automatically generated. The tool was created at the end of 2015 based on satellite images NASA made publicly available after the year 2000. SATVeg measures the vegetation index, that is, the amount of phytomass that exists in a given area. With the information available, it is possible to follow the behavior of vegetation on the surface of the Earth in the course of time, which helps studies concerning land use and cover and their transitions. Analyses based on such high resolution time data make it possible to regularly follow the development of the crops or the agricultural area, on the basis of their vegetation indices, which represent phytomass behavior throughout time. The information is extracted from satellite images and shows the amount of vegetation that exists in the area observed, measured in 250x250m grids on the surface of the Earth. Aid for public policy The technology helps the Brazilian government elaborate environmental and agricultural public policy and provides important data to researchers, students, geoprocessing technicians, public managers, consultants, and other users in the production sector. The tool supports the systematic monitoring of Brazilian agriculture and assists in crop mapping, so that their behavior is known with more precision. Each profile on area use and cover is generated using 16-day composites produced by the Modis sensor from the Terra and Aqua satellites, which are regularly updated. For a more effective user experience, SATVeg offers a GoogleMaps interface for the selection of areas of interest, tools to filter time series, modules to upload vectorial files, and calculation of average profiles. Before SATVeg, the readings were estimated from the images, and graphs were manually produced. The new system makes a historical reading and automatically generates graphs. The technology supplies unequivocal data on the process of land use, occupation and expansion. That facilitates the enforcement of environmental legislation, especially as it generates a description based on periods such as, for instance, the process of reforestation established by the Forest Code. In addition, it also helps with the management and monitoring of land use intensification programs. The research projects "Methodology for the monitoring of Brazilian agricultural activity" (Mapagri), TerraClass Amazônia and TerraClass Cerrado have also made use of the technical resources available in SATVeg. SATVeg can be accessed for free after a simple registration process. Translation: Mariana de Lima Medeiros