Recent Research:
1) Global Chemistry-Climate Modeling
​Ojha, N. et al., Secondary ozone peaks in the troposphere over the Himalayas, Atmos. Chem. Phys. Discuss., 2016 Link to PDF
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2) Regional Chemistry Transport Modeling
​a) For South Asian Region
Ojha, N. et al., Ozone and carbon monoxide over India during the summer monsoon: regional emissions and transport, Atmos. Chem. Phys., 2016. Link to PDF
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Sharma, A*., Ojha, N*. et al.: WRF-Chem simulated surface ozone over South Asia during the pre-monsoon: Effects of emission inventories and chemical mechanisms, Atmos. Chem. Phys. Discuss., doi:10.5194/acp-2016-1083, in review, 2016. Link to PDF
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Girach, I.*, Ojha, N*. et al.: Variations in O3, CO, and CH4 over the Bay of Bengal during the summer monsoon season: shipborne measurements and model simulations, Atmos. Chem. Phys., 17, 257-275, doi:10.5194/acp-17-257-2017, 2017. Link to PDF
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b) For European Region
Mar. K. A., Ojha, N., Pozzer A., and T. M. Butler, Ozone air quality simulations with WRF-Chem (v3.5.1) over Europe: model evaluation and chemical mechanism comparison, Geosci. Model Dev., 9, 3699-3728, doi:10.5194/gmd-9-3699-2016, 2016. Link to PDF
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Research work during PhD:
1) Balloon-borne measurements
​Ojha, N. et al., On the processes influencing the vertical distribution of ozone over the central Himalayas: Analysis of yearlong ozonesonde observations, Atmospheric Environment, 2014. contact me for PDF file
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2)Ground-based measurements and Chemical Box Modeling
Ojha, N. et al., Variabilities in ozone at a semi-urban site in the Indo-Gangetic Plain region: Association with the meteorology and regional processes, J. Geophys. Res., 2012.contact me for PDF file