000185522 001__ 185522 000185522 005__ 20240712101025.0 000185522 0247_ $$2doi$$a10.5194/acp-14-10619-2014 000185522 0247_ $$2ISSN$$a1680-7316 000185522 0247_ $$2ISSN$$a1680-7324 000185522 0247_ $$2Handle$$a2128/8167 000185522 0247_ $$2WOS$$aWOS:000344164800014 000185522 0247_ $$2altmetric$$aaltmetric:21824562 000185522 037__ $$aFZJ-2014-06949 000185522 082__ $$a550 000185522 1001_ $$0P:(DE-HGF)0$$aMarrapu, P.$$b0$$eCorresponding Author 000185522 245__ $$aAir quality in Delhi during the Commonwealth Games 000185522 260__ $$aKatlenburg-Lindau$$bEGU$$c2014 000185522 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s185522 000185522 3367_ $$2DataCite$$aOutput Types/Journal article 000185522 3367_ $$00$$2EndNote$$aJournal Article 000185522 3367_ $$2BibTeX$$aARTICLE 000185522 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000185522 3367_ $$2DRIVER$$aarticle 000185522 520__ $$aAir quality during the Commonwealth Games (CWG, held in Delhi in October 2010) is analyzed using a new air quality forecasting system established for the games. The CWG stimulated enhanced efforts to monitor and model air quality in the region. The air quality of Delhi during the CWG had high levels of particles with mean values of PM2.5 and PM10 at the venues of 111 and 238 μg m−3, respectively. Black carbon (BC) accounted for ~ 10% of the PM2.5 mass. It is shown that BC, PM2.5 and PM10 concentrations are well predicted, but with positive biases of ~ 25%. The diurnal variations are also well captured, with both the observations and the modeled values showing nighttime maxima and daytime minima. A new emissions inventory, developed as part of this air quality forecasting initiative, is evaluated by comparing the observed and predicted species-species correlations (i.e., BC : CO; BC : PM2.5; PM2.5 : PM10). Assuming that the observations at these sites are representative and that all the model errors are associated with the emissions, then the modeled concentrations and slopes can be made consistent by scaling the emissions by 0.6 for NOx, 2 for CO, and 0.7 for BC, PM2.5, and PM10. The emission estimates for particles are remarkably good considering the uncertainty in the estimates due to the diverse spread of activities and technologies that take place in Delhi and the rapid rates of change. 000185522 536__ $$0G:(DE-HGF)POF2-233$$a233 - Trace gas and aerosol processes in the troposphere (POF2-233)$$cPOF2-233$$fPOF II$$x0 000185522 588__ $$aDataset connected to CrossRef, juser.fz-juelich.de 000185522 7001_ $$0P:(DE-HGF)0$$aCheng, Y.$$b1 000185522 7001_ $$0P:(DE-HGF)0$$aBeig, G.$$b2 000185522 7001_ $$0P:(DE-HGF)0$$aSahu, S.$$b3 000185522 7001_ $$0P:(DE-HGF)0$$aSrinivas, R.$$b4 000185522 7001_ $$0P:(DE-HGF)0$$aCarmichael, G. 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