Publication

In this paper, the authors study the spatial patterns of ambient air quality in Delhi, with the objective to determine if Delhi's air sampling sites can be grouped together. Cluster analysis was used, due to the lack of adequate data for sophisticated space-time modeling. The results demonstrate the presence of a systematic difference between measurements made by the two agencies involved in monitoring air quality. The authors recommend the implementation of a single ambient air quality standard for cities such as Delhi, rather than standards classified based on land-use.