ANTHROPOGENIC EMISSIONS OF NOX, NH3 AND N2O IN INDIA

Emissions of NOx, NH3 and N2O from anthropogenic activities in India h ave been estimated based on actual field measurements as well as avail able default methodologies. The NOx emissions are mainly from the tran sport sector and contribute about 5% of the global NOx emission from f ossil fuel. NH3 emissions from urea seems to be highly uncertain. Howe ver, emissions of NH3 from fertilizers and livestock are estimated to be 1175 Gg and 1433 Gg, respectively. N2O emissions seem to be derived predominantly from fertilizer applications, resulting in the release of 199-279 Gg N2O. Other sources of N2O, viz. agricultural residue bur ning, biomass burning for energy and nitric acid production are estima ted to be 3, 35-187 and 2-7 Gg, respectively.