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Dr. Narendra Ojha

Assistant Professor,
Space and Atmospheric Sciences Division,
Physical Research Laboratory, Ahmedabad
E-mail: [email protected]; [email protected]
Telephone: +91-79-26314669

ICTP Prize 2021

Research Interests

  • Trace Gases and Aerosols
  • Meteorology and Dynamics
  • Local, Regional, and Global Modeling
  • Machine Learning

Professional Experience

Academic Qualifications

  • Ph.D. (Physics) (2014): Aryabhatta Research Institute of Observational Sciences (ARIES) / Kumaun University, Nainital, India
    • [Thesis focused on the distribution of trace gases over Indian region]
  • M.Sc. (Physics)(2007): University of Allahabad, Allahabad, India
  • B.Sc. (Physics, Mathematics) (2005): University of Allahabad, Allahabad, India

Ph.D. Students

(1) Dr. (Ms.) Meghna Soni, PhD awarded by IIT Gandhinagar, 2024; Now Postdoctoral Research Associate, University of Exeter, UK (Group: Prof. Jim Haywood)
  • PhD Thesis Title: "Modeling of Atmospheric Trace Gases over the Indian Subcontinent: Assessment of Chemical and Meteorological Processes"
  • Early Career Researcher Talk Award, International Global Atmospheric Chemistry (IGAC), 2022
  • Soni et al. (2023): Comprehensive multiphase chlorine chemistry in the box model CAABA/MECCA: Implications to atmospheric oxidative capacity, Atmospheric Chemistry & Physics
  • Soni et al. (2022): Photochemical evolution of air in a tropical urban environment of India: A model-based study, Chemosphere
  • Soni et al. (2021): Impact of COVID-19 lockdown on surface ozone build-up at an urban site in western India based on photochemical box modelling, Current Science

    • (2) Ms. S. Harithasree, PhD registered at IIT Gandhinagar
  • Research focus: "Machine Learning Based Modeling of Ozone and Fine Particulate Matter Variability over India"
  • Harithasree et al. (2024): Surface ozone over Doon valley of the Indian Himalaya: Characteristics, impact assessment, and model results, Atmospheric Environment: X

    • Selected Publications

    • Shukla, Ojha et al. (2025): "Chemical composition of aerosols over the Arabian Sea based on global reanalyses data and on-board ship measurements", Atmospheric Environment
    • Girach, Ojha et al. (2024): "Influences of downward transport and photochemistry on surface ozone over East Antarctica during austral summer: in situ observations and model simulations", Atmospheric Chemistry and Physics
    • Lakhima, Ojha et al. (2022): "Trends in sulfur dioxide over the Indian subcontinent during 2003–2019", Atmospheric Environment
    • Ojha et al. (2022a): "Mechanisms and Pathways for Coordinated Control of Fine Particulate Matter and Ozone", Current Pollution Reports
    • Ojha et al. (2022b): "Distribution of reactive trace gases over South Asia: Observations and modeling", Asian Atmospheric Pollution: Sources, Characteristics and Impacts Edited by Ramesh P. Singh, ISBN: 978-0-12-816693-2, Elsevier
    • Ojha et al. (2021): "Exploring the potential of machine learning for simulations of urban ozone variability", Scientific Reports
    • Jaydeep, Singh, Ojha et al. (2021): "Effects of spatial resolution on WRF v3.8.1 simulated meteorology over the central Himalaya", Geoscientific Model Development
    • Ojha et al. (2020): "On the widespread enhancement in fine particulate matter across the Indo-Gangetic Plain towards winter", Scientific Reports
    • Lakhima, Ojha et al. (2019): "Distribution of volatile organic compounds over Indian subcontinent during winter: WRF-chem simulation versus observations", Environmental Pollution
    • Sharma, Ojha et al. (2019): "Revisiting the crop yield loss in India attributable to ozone", Atmospheric Environment: X
    • Ojha et al. (2017): "Secondary ozone peaks in the troposphere over the Himalayas", Atmospheric Chemistry and Physics
    • Ojha et al. (2016): "Ozone and carbon monoxide over India during the summer monsoon: regional emissions and transport", Atmospheric Chemistry and Physics
    • Ojha et al. (2014): "On the processes influencing the vertical distribution of ozone over the central Himalayas: Analysis of yearlong ozonesonde observations", Atmospheric Environment
    • Ojha et al. (2012): "Variabilities in ozone at a semi‐urban site in the Indo‐Gangetic Plain region: Association with the meteorology and regional processes", Journal of Geophysical Research
    • More publications can be found in Google Scholar and ResearchGate
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