Deter, a system based on satellites of Brazil’s National Institute for Space Research (Instituto Nacional de Pesquisas Espaciais – Inpe), has warned 207,59 km² of clearing or degradation in the Amazon rainforest. The number represents the sum of alerts recorded in the last two months of 2011.
Between November and April, which is the rainy season in the Amazon, the observation through satellites becomes harder due to the intensity of clouds covering the region. Thus Inpe groups these two months, although the system continues the regular operation and sends data to Ibama throughout this time.
Yellow dots on the map below represent the location of an alert issued by Deter. Pink areas are places that could not be monitored due clouds coverage.
Due to cloud cover variation between two months, also to satellite resolution, Inpe does not recommend to compare data from different months or years obtained by Deter.
Deter
Performed by the Earth Observation Coordination, Deter is a service aimed to monitor deforestation and forest degradation in the Amazon, based on satellite data of high revisiting frequency.
Deter system produces Amazon deforestation alerts, which guide supervision and ensure effective actions of forest clearing control. Although its data is released monthly or bimonthly, Deter results have been sent to Ibama – responsible to overseeing warning areas – almost daily.
Source: Inpe
