Environmental Monitoring and Assessment

, Volume 185, Issue 1, pp 123–142 | Cite as

Monitoring variation in greenhouse gases concentration in Urban Environment of Delhi

  • Samraj Sahay
  • Chirashree Ghosh


Cities across the globe are considered as major anthropogenic sources of greenhouse gases (GHG), yet very few efforts has been made to monitor ambient concentration of GHG in cities, especially in a developing country like India. Here, variations in the ambient concentrations of carbon dioxide (CO2) and methane (CH4) in residential, commercial, and industrial areas of Delhi are determined from fortnightly daytime observations from July, 2008 to March, 2009. Results indicate that the average daytime ambient concentration of CO2 varied from 495 to 554 ppm in authorized residential areas, 503 to 621 ppm in the slums or jhuggies in the unauthorized residential areas, 489 to 582 ppm in commercial areas, and 512 to 568 ppm in industrial areas with an average of 541 ± 27 ppm. CH4 concentration varied from 652 to 5,356 ppbv in authorized residential areas, 500 to15,220 ppbv in the unauthorized residential areas, 921 to 11,000 ppbv in the commercial areas, and 250 to 2,550 ppbv in the industrial areas with an average of 3,226 ± 1,090 ppbv. A low mid-afternoon CO2 concentration was observed at most of the sites, primarily due to strong biospheric photosynthesis coupled with strong vertical mixing.


Greenhouse gases Residential Commercial Industrial areas Delhi Carbon dioxide Methane 



Authors are thankful to the Department of Environment, Government of N.C.T. of Delhi for providing the fund for the research project for monitoring GHG’s concentration in Delhi. Support and help provided by the senior officials of the Department is greatly appreciated. Authors are also thankful to the unknown reviewers of this paper for their extremely valuable comments and suggestions.


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© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of Business EconomicsUniversity of DelhiNew DelhiIndia
  2. 2.Department of Environmental StudiesUniversity of DelhiDelhiIndia

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