MapBiomas Alert is a system of validation and refinement of deforestation alerts   with high resolution images. The current version is dedicated exclusively to deforestation in all Brazilian biomes and will expand to other themes like degradation and regeneration of native vegetation over the next few years.

Brazil is covered by more than a dozen deforestation alerts' systems, such as DETER / INPE (Amazon and Cerrado), SAD / IMAZON, SipamSAR/Censipam (Amazon), and GLAD / Univ. Maryland (all biomes). Together, these systems generate tens of thousands of alerts from the analysis of satellite images of medium spatial resolution (20 to 60 m). These alerts are essential for law enforcement by the environmental and governmental agencies and for monitoring zero deforestation commitments in value chains, among other various applications.

Given the resolution used in these systems, the alerts need to go through a detailed validation process, often followed by field validation before they can be useful to guide actions such as embargoes on illegal deforestation areas.

During consultations and workshops with governmental agencies that use alert systems (e.g. MMA, IBAMA, SFB, ICMBio, MPF, SEMAs, MP-Estadual, Polícia Militar Ambiental and TCU) and alert providers (e.g. INPE, IMAZON, University of Maryland, CENSIPAM, ISA, JICA + JAXA), we have identified the best contribution MapBiomas network could provide to support environmental monitoring and created the MapBiomas Alert platform.

The initiative builds onMapBiomas' successful experience of working as a multi-institutional network specialized in processing images and data in a large scale  , and making them available in a free, transparent and accessible manner to the general public.

Currently, the alerts generated by the different providers are collected and used as a reference to locate deforestation in daily high resolution images (3 m). Each alert is verified and defined more precisely in space and time. For each validated alert, a report is generated with images from before and after the deforestation, and crossing with areas of the Rural Environmental Registry (CAR), Protected Areas, Rural Settlements and other geographical categories (e.g. biomes, states, river basins). We also provide in the same platform the more recent version of MapBiomas'  annual Brazilian land cover and land use maps since 1985.

The proposed effect is to generate complete and ready-to-use documentation for each deforestation alert, just like the photo of the car plate in the traffic infraction fines. Thus, we seek to promote greater effectiveness in the law enforcement actions of the various user agencies.

MapBiomas Alert is notanother deforestation alert system, but an effort to enhance the usability and effectiveness of alerts already generated by other systems.

The data produced is public and free and can be accessed on the platform:

ABOUT MAPBIOMASMapBiomas is a multi-institutional project involving universities, NGOs and technology companies that promotes the annual mapping of land cover and land use in Brazil over the last three decades and provides data and maps in an open and freeway. To know more access: