Dr. A. (Ajit) Ahlawat

Profile

I am particularly interested in understanding air pollution dynamics in urban areas and formation of events such as haze and fog. I have completed my Ph.D. from CSIR-National Physical Laboratory in Delhi, India in the field of aerosol instrumentation in 2019. I worked as a Scientist at the Leibniz Institute for Tropospheric Research (TROPOS), Germany for almost 6 years, contributing to the advancement of air pollution monitoring through ground-based and airborne field campaigns.

Research

Currently, as an Assistant Professor at the Department of Geoscience and Remote Sensing at TU Delft, my work revolves around measuring urban air pollution using cutting-edge techniques such as drones, low-cost sensors, AI/ML, and miniature instruments to better understand and address environmental challenges.

  1. Ajit Ahlawat, S. K. Mishra, V. Goel, C. Sharma, B. P. Singh, A. Wiedensohler, Modelling Aerosol Optical Properties over Urban Environment (New Delhi) Constrained with Balloon Observation. Atmospheric Environment, 205, 115-124, https://doi.org/10.1016/j.atmosenv.2019.02.006, (2019) 
  2. Ajit Ahlawat, S. K. Mishra, S. Gumber, V. Goel, C. Sharma, A. Wiedensohler Performance evaluation of light weight gas sensor system suitable for airborne applications against co-location gas analysers over Delhi. Science of the Total Environment, 697, 134016, https://doi.org/10.1016/j.scitotenv.2019.134016, (2019)
  3. Ajit Ahlawat, S. Seeger, M. Gottschalk, T. Tuch, A. Wiedensohler, Observation of systematic deviations between Faraday Cup Aerosol Electrometers for varying particle sizes and flow rates - Results of the AEROMET FCAE Workshop. Metrologia, https://iopscience.iop.org/article/10.1088/1681-7575/ac0710/pdf (2021)
  4. A.K. Mandariya, Ajit Ahlawat, M. Haneef, N. A. Baig, K. Patel, J. Apte, L. Hildebrandt Ruiz, A. Wiedensohler, G. Habib. Measurement report: Hygroscopicity of size-selected aerosol particles in the heavily polluted urban atmosphere of Delhi: impacts of chloride aerosol, Atmospheric Chemistry and Physics, 24, 3627–3647, https://doi.org/10.5194/acp-24-3627-2024, (2024).
  5. B. Romshoo, T. Müller, Ajit Ahlawat, et al. Significant contribution of fractal morphology to aerosol light absorption in polluted environments dominated by black carbon (BC). npj Climate and Atmospheric Science, 7, 87, https://doi.org/10.1038/s41612-024-00634-0, (2024)
  6. P. Gupta, P. Ferrer-Cid, J.M. Barcelo-Ordinas, J. Garcia-Vidal, V.K. Soni, M.L. Pöhlker, Ajit Ahlawat, M. Viana. Estimating black carbon levels using machine learning models in high-concentration regions, Science of the Total Environment, 948, 174804, https://doi.org/10.1016/j.scitotenv.2024.174804, (2024)
     

DAAD-FCT PPP Project (2024-26) as Principal Investigator
Project Name: Air pollution profiling through UAV-assisted monitoring
Main Objective is to characterise vertical and horizontal dispersion profiles of atmospheric pollutants in the areas which are considered to be of critical anthropogenic activity (rural, industrial, and urban areas), in real-time, using an Unmanned Aerial Vehicle (UAV) equipped with air quality low-cost sensors. This work aims to develop a low-cost and a replicable air quality monitoring methodology, open to the entire scientific community.
 

Air pollution meteorology & dispersion (2024/25 Q3)

Ajit Ahlawat

Assistant Professor

  • a.s.ahlawat@tudelft.nl

  • Faculty of Civil Engineering and Geosciences
    Building 23
    Stevinweg 1 / PO box 5048
    2628 CN Delft / 2600 GA Delft

    Room number: 2.29

    Availability: Mo, Tue and Thur at faculty, Wed, Fri working at home

     

     

     

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