Research Overview
My research combines ground-based observations, satellite remote sensing, inverse modelling, algorithm development, and quantitative data analysis
to address major questions in atmospheric composition and climate science. A central theme of my work is the use of
Bayesian inverse modelling to estimate surface emission fluxes from atmospheric observations and to improve the regional applicability
of observational and satellite-derived products under Indian conditions.
In recent years, my work has included high-resolution posterior emission estimates for PM2.5 over northern India, assessment of the roles of
crop-residue burning and urban emissions, validation of satellite-derived columnar CO2 and CH4 products over India, and advancement of
observational tools for aerosol and trace-gas studies. A major ongoing effort is the development of long-term observational capability through the procurement
and planned deployment of a Fourier Transform Infrared Spectro-Radiometer (FTIR), with the long-term goal of establishing a climate and atmospheric composition
observatory in the Rann of Kachchh.
Core Research Areas
- Atmospheric composition and climate
- Greenhouse-gas observations and validation
- Bayesian inverse modelling of emissions
- Satellite remote sensing of aerosols and trace gases
- Air quality and emission source characterization
- Ground-based atmospheric measurements and observational infrastructure
Selected Scientific Contributions
- Developed inverse-modelling frameworks to estimate PM2.5 emission fluxes over northern India.
- Led India-focused validation of satellite-derived columnar CO2 and CH4 products from GOSAT and OCO-2.
- Contributed to retrieval algorithm development for remotely sensed atmospheric quantities.
- Advanced observational capability for long-term trace-gas and aerosol monitoring in India.
- Built integrated workflows linking measurements, models, and physically consistent interpretation.
Research Mentoring and Academic Guidance
My academic role includes formal supervision, co-guidance, thesis mentoring, postdoctoral mentoring, and collaborative research guidance for students and early-career researchers working in atmospheric science, remote sensing, and quantitative analysis.
Current Students
Current student
Former Students
Former student
Former student (co-guided)
Former student (co-guided)
Co-supervised master’s thesis
Co-supervised master’s thesis
Supervised M.S. thesis
Former Postdoctoral Fellows
Former postdoctoral fellow
Former postdoctoral fellow
Other Research Mentoring
Mentored informally
Selected Recent Publications
Latest publications in which I am the first or second author are highlighted below.
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Gadhavi, H. S., Arora, A., Jain, C., Sha, M. K., Hase, F., Frey, M., et al. (2025).
Validation and assessment of satellite-based columnar CO2 and CH4 mixing ratios from GOSAT and OCO-2 satellites over India.
Atmospheric Measurement Techniques, 18, 4497–4514.
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Arora, A., Gadhavi, H., Ramachandran, S., & Rajesh, T. A. (2025).
Evaluation of black carbon emission inventories over the Indian subcontinent: Role of open biomass burning and its representation in emission fluxes.
Atmospheric Environment, 359, 121367.
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Yadav, R. K., Gadhavi, H., Akanksha, Arora Mohbey, K. K., Kumar, S., Lal, S., & Mallik, C. (2023).
Relation between PM2.5 and O3 over different urban environmental regimes in India.
Urban Science, 7, 9.
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Mallik, C., Gadhavi, H., Lal, S., Yadav, R. K., Boopathy, R., & Das, T. (2021).
Effect of lockdown on pollutant levels in the Delhi megacity: Role of local emission sources and chemical lifetimes.
Frontiers in Environmental Science, 9, 743894.
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Renuka, K., Gadhavi, H., Jayaraman, A., Rao, S. V. B., & Lal, S. (2020).
Study of mixing ratios of SO2 in a tropical rural environment in south India.
Journal of Earth System Science, 129, 104.
For a complete and updated list of publications, please visit my
ResearchGate,
Google Scholar,
and ORCID profiles.
