NO2 emissions from agricultural burning in São Paulo, Brazil
Abstract
We report here on the application of a compact ultraviolet spectrometer to measurement of NO2 emissions from sugar cane field burns in São Paulo, Brazil, the time-resolved NO2 emission from a 10 ha plot peaked at about 240 g (NO2) s(-1), and amounted to a total yield of approximately 50 kg of N, or about 0.5 g (N) m(-2). Emission of N as NOx (i.e., NO + NO2) was estimated at 2.5 g (N) in 2, equivalent to 30% of applied fertilizer nitrogen. The corresponding annual emission of NOx nitrogen from São Paulo State sugar cane burning was >45 Gg N. In contrast to mechanized harvesting, which does not require prior burning of the crop, manual harvesting with burning acts to recycle nitrogen into surface soils and ecosystems.
How to cite this document
Oppenheimer, C. et al. NO2 emissions from agricultural burning in São Paulo, Brazil. Environmental Science & Technology. Washington: Amer Chemical Soc, v. 38, n. 17, p. 4557-4561, 2004. Available at: <http://hdl.handle.net/11449/38742>.
Language
English
Collections
