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dc.contributor.authorGurjar, Bhola Ram-
dc.contributor.authorVan Aardenne J.A.-
dc.contributor.authorLelieveld J.-
dc.contributor.authorMohan M.-
dc.identifier.citationAtmospheric Environment(2004), 38(33): 5663-5681-
dc.description.abstractA comprehensive emission inventory for megacity Delhi, India, for the period 1990-2000 has been developed in support of air quality, atmospheric chemistry and climate studies. It appears that SO 2 and total suspended particles (TSP) are largely emitted by thermal power plants (?68% and ?80%, respectively), while the transport sector contributes most to NO x, CO and non-methane volatile organic compound (NMVOC) emissions (>80%). Further, while CO 2 has been largely emitted by power plants in the past (about 60% in 1990, and 48% in 2000), the contribution by the transport sector is increasing (27% in 1990 and 39% in 2000). NH 3 and N 2O are largely emitted from agriculture (?70% and ?50%, respectively), and solid waste disposal is the main source of CH 4 (?80%). In the past TSP abatement to improve air quality has largely focused on traffic emissions; however, our results suggest that it would be most efficient to also reduce TSP emissions by power plants. We also assessed the potential large-scale transport of the Delhi emissions based on 10-day forward trajectory calculations. The relatively strong growth of NO x emissions indicates that photochemical O 3 formation in the regional environment may be increasing substantially, in particular in the dry season. During the summer, on the other hand, convective mixing of air pollutants may reduce regional but increase large-scale, i.e. hemispheric effects. © 2004 Elsevier Ltd. All rights reserved.-
dc.relation.ispartofAtmospheric Environment-
dc.subjectAtmospheric chemistry-
dc.subjectEmission inventory-
dc.subjectRegional-global impact-
dc.subjectTrajectory analysis-
dc.subjectUrban air pollution-
dc.titleEmission estimates and trends (1990-2000) for megacity Delhi and implications-
dc.affiliationGurjar, B.R., Atmospheric Chemistry Division, Max Planck Institute for Chemistry, P.O. Box 3060, D-55020 Mainz, G., Germany-
dc.affiliationVan Aardenne, J.A., Atmospheric Chemistry Division, Max Planck Institute for Chemistry, P.O. Box 3060, D-55020 Mainz, G., Germany-
dc.description.fundingTERI (The Energy and Resources Institute), 2001a. State of Environment Report for Delhi 2001. [Report No. 2000EE65, Supported by the Department of Environment, Government of National Capital Territory, Delhi.] TERI, New Delhi.-
dc.description.correspondingauthorAtmospheric Chemistry Division, Max Planck Institute for Chemistry, P.O. Box 3060, D-55020 Mainz, G.Germany; email:
Appears in Collections:Journal Publications [CE]

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