​​Research Interests: Atmospheric and Climate Sciences

• Atmospheric new particle 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 Colloboraive Aerosol Measurements: April-May 2012/2013

  Organized, conducted, and analyzed 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 analyzing data from 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)

    Funding Agency: Academy of Finland

    Project Period: 4 Years (2024-2028)

    Role: Partner

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

    Funding Agency: SERB (STAR Award)

    Project Period: 3 Years (2023-2026)

    Role: PI 

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

    Project Period: 2 Years 4 Months (2021-2023)

    Role: 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)
    Funding Agency: UoH-IoE
    Project Period: 3 Years (2021-2023)

    Role: PI (Co-PI: Dr. Rakesh Hooda, FMI, Finland)

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

    Role: PI

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

    Role: PI

7. Start-Up Grant (completed)
    Funding Agency: University Grant Commission, Government of India
    Project Period: 2 Years (2017-2018)

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