Martins, H., Fonseca, A., Souza Jr., C., Sales, M., & Veríssimo, A. 2013. Forest Transparency for the Brazilian Amazon (January 2013) (p. 13). Belém.
In February 2013, 72% of the forest area in Legal Amazon was covered by clouds, mainly in the states of Amapá and Roraima, representing 91% and 90% of the cloud coverage, respectively. This compromised the detection of deforestation and forest degradation on that month by MODIS images used by SAD. Under such conditions, only 45 square kilometers of deforestation were detected in February 2013 in Legal Amazon, what represented a 58% reduction when compared to February 2012 when deforestation summed 107 square kilometers and cloud coverage was 76%.
Accumulated deforestation from August 2012 to February 2013, summed 1,351 square kilometers up, representing a 91% increase compared to the former period [August 2011 to February 2012], when deforestation summed 708 square meters.
In February 2013, a large part of deforestation (78%) occurred in the State of Mato Grosso, followed by Amazonas (12%), Pará (9%), Tocantins (7%), Rondônia (4%), and Amazonas (2%). Forest degradation in Legal Amazon summed 50 square meters. Compared to February 2012, when forest degradation summed 95 square km, a 47% reduction was noticed.
Accumulated deforestation from August 2012 to February 2013, summed 1,091 square kilometers. Compared to the former period [August 2011 to February 2012], when deforestation summed 1433 square meters, a 29% reduction was noticed.
In February 2013, SAD detected a deforestation involving 990 thousand tons of equivalent CO2. The accumulated of the period (from August 2012 to February 2013) of equivalent CO2 issued compromised by deforestation summed 74.5 million tons what represents a 73% increase compared to the former period (august 2012 to February 2012).