​​Research Interests: Atmospheric and Climate Sciences

• Airborne aerosol formation and growth

• Aerosol-induced changes in cloud, radiation, and climate

• Satellite remote sensing of trace gases and aerosols

• Urban air pollution and micro-meteorology  

• Extreme weather events

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Field measurements

IITK-IITM Collaborative Aerosol Measurements: April-May 2012/2013

  Organised, conducted, and analysed aerosol size distribution and trace gases measurements at two distinct urban locations, Pune and Kanpur, in India.

Aerosol Life Cycle IOP: July-August 2011

 Actively participated in archiving and analysing data from the Aerosol Life Cycle Intensive Observation Period (IOP) campaign during July-August 2011 in Long Island, New York, USA.

PROPHET CABINEX: July-August 2009

 Actively participated in science meetings and data analysis from PROPHET Community Atmosphere-Biosphere INteractions Experiments (CABINEX)-2009 campaign.

Marie Curie Research Fellow:  October 2006-September 2009

 As part of FP6 EST SPARTAN project (contract no. MEST–CT–2004–7512) at the University of Leicester, I was actively involved in the organizing committee of the Sprite–Watch campaign and observations of Transient Luminous Events (TLE's) at Meteorological Observatory, Sinezka Mountain, Poland during July 2007.

ISRO-GBP: December-January 2004

 Participated in the ISRO-GBP phase-II land campaign at Indian Institute of Technology, Kanpur during winter of 2004.

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Sponsored Research Projects

1.The role of multiphase emissions and new particle formation on haze and cloud condensation nuclei in India (ongoing)

    Academy of Finland / 4 Years (2024-2028)  / Partner

2. Development and evaluation of satellite-based estimates of ultrafine particles in four Indian locations (ongoing)

    SERB (STAR Award) / 3 Years (2023-2026) / PI 

3. Investigations of atmospheric aerosol physico-chemical properties: Ambient observations and numerical simulations (completed)

    Consultancy Project / 2 Years 4 Months (2021-2023) / PI (Co-PI: Prof. P. Prem Krian and Dr. Ashoka S. Vudaygiri, School of Physics, UoH)

4. Association between atmospheric aerosol nucleation and cloud condensation nuclei: Implications for aerosol-indirect forcing (completed)
    UoH-IoE / 3 Years (2021-2023)  / PI (Co-PI: Dr. Rakesh Hooda, FMI, Finland)

5. Observation of nanoparticles in a polluted environment: From sub-5nm to CCN-active sizes (completed)
    DST-SPLICE-CCP /  4 Years (2018-2022) / PI

6. Understanding new aerosol particle formation in the atmosphere: Observation, modeling and comparisons (completed)
    DST-SERB / 3 Years (2017-2020) / PI

7. Start-Up Grant (completed)
    University Grant Commission, Government of India / 2 Years (2017-2018)

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