Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Simulating ozone concentrations using precursor emission inventories in Delhi – National Capital Region of India
AbstractThis study simulates ground level ozone concentrations in a heavily populated and polluted National Capital Region (NCR- Delhi) in India. Multi-sectoral emission inventories of ozone precursors are prepared at a high resolution of 4 × 4 km2 for the whole region covering the capital city of Delhi along with other surrounding towns and rural regions in NCR. Emission inventories show that transport sector accounts for 55% of the total NOx emissions, followed by power plants (23%) and diesel generator sets (7%). In NMVOC inventories, transport sector again accounts for 33%, followed by evaporative emissions released from solvent use and fuel handling activities (30%), and agricultural residue burning (28%). Refuse burning contributes to 73% of CO emissions mainly due to incomplete combustion, followed by agricultural residue burning (14%). These emissions are spatially and temporally distributed across the study domain and are fed into the WRF-CMAQ models to predict ozone concentrations for the year 2012. Model validations are carried out with the observed values at different monitoring stations in Delhi. The performance of the models over various metrics used for evaluation was found to be satisfactory. Summers and post-monsoon seasons were better simulated than monsoon and winter seasons. Simulations have shown higher concentrations of ozone formation during summers and lesser during winters and monsoon seasons, mainly due to varying solar radiation affecting photo-chemical activities. Ozone concentrations are observed lower at those locations where NOx emissions are higher, and concentrations increase close to the boundary of study domain when compared to the center of Delhi city. Downwind regions to Delhi are influenced by the ozone formed due to plume of precursor emissions released from Delhi. Considering significant background contributions, regional scale controls are required for reducing ozone in NCR.
HighlightsSectoral emission inventories of ozone precursors at a high resolution for NCR.Simulated ozone concentrations in heavily populated and polluted NCR in India.Satisfactory performance of the models for ozone prediction.Higher concentrations of ozone during summers than in winters and monsoon seasons.Ozone is found to be lower at locations of higher NOx emissions.
Simulating ozone concentrations using precursor emission inventories in Delhi – National Capital Region of India
AbstractThis study simulates ground level ozone concentrations in a heavily populated and polluted National Capital Region (NCR- Delhi) in India. Multi-sectoral emission inventories of ozone precursors are prepared at a high resolution of 4 × 4 km2 for the whole region covering the capital city of Delhi along with other surrounding towns and rural regions in NCR. Emission inventories show that transport sector accounts for 55% of the total NOx emissions, followed by power plants (23%) and diesel generator sets (7%). In NMVOC inventories, transport sector again accounts for 33%, followed by evaporative emissions released from solvent use and fuel handling activities (30%), and agricultural residue burning (28%). Refuse burning contributes to 73% of CO emissions mainly due to incomplete combustion, followed by agricultural residue burning (14%). These emissions are spatially and temporally distributed across the study domain and are fed into the WRF-CMAQ models to predict ozone concentrations for the year 2012. Model validations are carried out with the observed values at different monitoring stations in Delhi. The performance of the models over various metrics used for evaluation was found to be satisfactory. Summers and post-monsoon seasons were better simulated than monsoon and winter seasons. Simulations have shown higher concentrations of ozone formation during summers and lesser during winters and monsoon seasons, mainly due to varying solar radiation affecting photo-chemical activities. Ozone concentrations are observed lower at those locations where NOx emissions are higher, and concentrations increase close to the boundary of study domain when compared to the center of Delhi city. Downwind regions to Delhi are influenced by the ozone formed due to plume of precursor emissions released from Delhi. Considering significant background contributions, regional scale controls are required for reducing ozone in NCR.
HighlightsSectoral emission inventories of ozone precursors at a high resolution for NCR.Simulated ozone concentrations in heavily populated and polluted NCR in India.Satisfactory performance of the models for ozone prediction.Higher concentrations of ozone during summers than in winters and monsoon seasons.Ozone is found to be lower at locations of higher NOx emissions.
Simulating ozone concentrations using precursor emission inventories in Delhi – National Capital Region of India
Sharma, Sumit (Autor:in) / Khare, Mukesh (Autor:in)
Atmospheric Environment ; 151 ; 117-132
02.12.2016
16 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
A study for the planning framework of the National Capital Region (Delhi Metropolitan Area) in India
| DSpace@MIT | 1955
Flood risk management strategies for national capital territory of Delhi, India
| Taylor & Francis Verlag | 2019