1. NO2 Emissions from Agricultural Burning in São Paulo, Brazil
- Author
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Clive Oppenheimer, Willian C. Paterlini, Andrew G. Allen, Antony G. Wiatr, Andrew J. S. McGonigle, V. I. Tsanev, Cristine De Mello Dias, and Arnaldo Alves Cardoso
- Subjects
Nitrogen Dioxide ,Air pollution ,chemistry.chemical_element ,Incineration ,medicine.disease_cause ,Saccharum ,Crop ,chemistry.chemical_compound ,Smoke ,medicine ,Environmental Chemistry ,Nitrogen dioxide ,NOx ,Air Pollutants ,biology ,business.industry ,Environmental engineering ,Agriculture ,General Chemistry ,biology.organism_classification ,Nitrogen ,chemistry ,Agronomy ,Soil water ,Environmental science ,Spectrophotometry, Ultraviolet ,business ,Brazil ,Environmental Monitoring - Abstract
We report here on the application of a compact ultraviolet spectrometer to measurement of NO2 emissions from sugar cane field burns in Sao 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) m(-2), equivalent to 30% of applied fertilizer nitrogen. The corresponding annual emission of NOx nitrogen from Sao 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.
- Published
- 2004
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