About Me

Who Am I?

Welcome to my website dedicated to the fascinating field of atmospheric chemistry and its pivotal role in air pollution, climate change, and their implications for human health As a climate researcher, I am deeply committed to exploring the intricate interplay between secondary PM2.5 and O3 concentrations, both at regional and city scales. Furthermore, my research endeavors encompass an in-depth investigation into the diverse atmospheric processes contributing to the formation of PM2.5 and its constituents. To unravel these complex phenomena, I employ advanced numerical air-quality modeling techniques, coupled with innovative measurement methodologies. By delving into the intersection of air quality, climate, and health impacts, I aim to enhance our understanding of the intricate relationship between our environment and human well-being.

Air Quality Model-CMAQ

Weather Model-WRF

Emission Model-GAINS

Quotes to live by

  • Absence of evidence is not evidence of absence
  • You don’t get what you expect, you get what you inspect
  • Make the clean available, instead of waiting to make the available clean

Skills

Programming Skills

I initially acquired knowledge of C++ during my high school years, which sparked my interest in coding. Throughout my career, I have honed a diverse set of programming skills that have been instrumental in a wide range of projects, as detailed in the publication section below. The usage levels of these programming skills, indicated by the percentage, reflect their extensive application in various projects over the past few years.

Python

80%

C++

40%

FORTRAN

60%

CShell

90%

Bash

90%

MATLAB

40%
Papers
Articles
Projects
Publications

PEER-REVIEWED RESEARCH PAPERS

  1. Chaudhary, E., Dey, S., Ghosh, S., Sharma, S., Singh, N., Agarwal, S., Kushal, T., Venkataraman, C., Kurpad, A.V., Cohen, A.J., Jain, S., 2022. Reducing anemia burden in Indian women of reproductive age with clean‑air targets Nature Sustainability https://doi.org/10.1038/s41893-022-00944-2
  2. Rahman, M.H., Agarwal, S., Sharma, S., Suresh, R., Kundu, S., Vranckx, S., Maiheu, B., Blyth, L., Janssen, S., Gargava, P., Shukla, V.K. and Batra, S., 2020. Estimating city-average pollutant concentrations using detrended kriging spatial mapping technique in highly polluted cities. Environmental Modeling and Assessment https://doi.org/10.1007/s10666-022-09842-5
  3. Singh, N., Agarwal, S., Sharma, S., Chatani, S., Ramanathan, V., 2020. Air Pollution over India: Causal factors for the high pollution with implication for mitigation. ACS Earth and Space Chemistry https://doi.org/10.1021/acsearthspacechem.1c00170
  4. Sembhi, H., Wooster, M.J., Zhang, T., Sharma, S., Singh, N., Agarwal, S., Boesch, H., Gupta, S., Misra, A., Tripathi, S.N. and Mor, S., 2020. Post-monsoon air quality degradation across Northern India: Assessing the impact of policy-related shifts in timing and amount of crop residue burnt. Environmental Research Letters. https://doi.org/10.1088/1748-9326/aba714
  5. Agarwal, S., Sharma, S., Suresh, R., Rahman, M.H., Vranckx, S., Maiheu, B., Blyth, L., Janssen, S., Gargava, P., Shukla, V.K. and Batra, S., 2020. Air quality forecasting using artificial neural networks with real time dynamic error correction in highly polluted regions. The Science of the Total Environment, 735, pp.139454-139454. https://doi.org/10.1016/j.scitotenv.2020.139454

ARTICLES

India feels the heat: What happens if the current heatwave trend continues? WION News. June. 2023. https://www.wionews.com/india-news/data-lab-india-feels-the-heat-what-happens-if-the-current-warming-trend-continues-600497
Beyond Policies, the ASTRA India Needs to Defeat Pollution and Claim Clean Air. News 18. February. 2021. https://www.news18.com/news/opinion/beyond-policies-the-astra-india-needs-to-defeat-pollution-and-claim-clean-air-3484184.html
Gurugram's October air poorer than last year, but major pollutants saw a decline. Times of India. November. 2020. https://timesofindia.indiatimes.com/city/gurgaon/citys-oct-air-poorer-than-last-year-but-major-pollutants-saw-a-decline/articleshow/79030912.cms
Punjab’s groundwater law plays ‘minimal role’ in spiking Delhi’s winter pollution: study. The Hindu. July. 2020. https://www.thehindu.com/news/cities/Delhi/punjabs-law-plays-minimal-role-in-spiking-delhis- pollution-study/article32166169.ece
COVID-19 Lockdown - Showing possibilities of change. Terra Green. April. 2020. https://www.magzter.com/article/News/TerraGreen/Covid-19-Lockdown-Showing-Possibilities-Of-Change
An Invisible Pandemic. The Pioneer. November. 2019. https://www.dailypioneer.com/2019/columnists/an- invisible-pandemic.html
Combating Air Pollution, Scientifically. Lila Inter-Actions. October. 2019. https://lilainteractions.in/combating-air-pollution-scientifically/

PROJECTS

Overarching aim is to assess the contribution of agriculture open burning in air pollution in the Indio-Gangetic Plains, using observationally derived (satellite based) emission inventories.

  • Integrated satellite derived daily Fire Radiative Power with crop type and calculated emissions to go as input in CMAQ.
  • The results were analyzed, and findings were published in the journal Environmental Research Letters (ERL) (2nd paper in Publication section).

In order to tackle the problem of air pollution, Government of India has taken several steps such as setting up of national ambient air quality standards and air quality monitoring programme, penetration of gaseous fuels in residential and transport sector, emission norms for highly polluting industries, advanced vehicular emissions and fuel quality norms etc. Despite these initiatives, the pollutant levels in cities have not reduced and have increased in many cities with the growth patterns. In view of supporting the India’s effort for improving air quality, the Swiss Agency for Development and Cooperation (SDC) initiated the long-term ‘Clean air project in India (CAP India)’. The proposed project aim is to “support India’s efforts to improve people’s health and well-being through better air quality, while contributing to environment and climate change mitigation”.

  • Did WRF simulation runs for 4 nested domains
  • Simulated the boundary condition for the parent domain (India) using CamChem global model.
  • Computed ambient air quality of two cities and found sectoral contibution using CMAQ.

The main objectives are to develop strategies for control of air pollution in India at the national and city- level, using source-apportionment and intervention analysis studies. To bring better understanding and awareness of air pollution issues in the three cities is an important component of this project. And to help develop air quality management plan for the proposed cities.

  • Made the emission inventory for Surat city using secondary and satellite dataset.
  • Currently doing the source-apportionment of Surat city using CMAQ.

The focus of the research was on the methodologies used to estimate the carbon footprint, improve those existing methodologies and make an interface to be used by farmers exporting their produce. DailyDayCent model was set up to address Tier 1 GHG emission estimation in the project. For Tier2 and Tier3 GHG emissions, a model was designed which was integrated with DailyDayCent model.

  • Set up of DailyDayCent model for Tier1 emissions
  • Designed and wrote code for whole model (Python, DOS, FORTRAN).
  • Integrated both the models and created a user-friendly interface which was used by farmers in India.

The broad aim of the study was to simulate PM and ozone concentrations using WRF-CMAQ models and to assess strategies for PM and ozone control in India.

  • Ran WRF simulations for the year 2016 with analysis nudging of physical parameters.
  • Ran CMAQ simulations at India scale for different sectors contributing to India's air pollution.
  • Paper in submitted to Royal Society of Chemistry (4th in publication section).

Primary objectives of the project are to carry out spatial mapping of pollutants in the city using existing monitoring datasets for identification of air pollution hotspots in the city; and air quality forecasting and public advisories at the selected hotspots using Artifical Intelligence and Machine learning algorithm (ANN).

  • Used python to code ANN real time correction algorithm for forecasting (co-partnered with researchers from research institute VITO, Belgium)
  • The Central government body is planning to implement the model in the capital city of Delhi for public advisory to forecast high pollution days
  • Paper published in Science of the Total Environment (1st and 3rd paper in publication section)

The objectives of the proposed study are to measure air pollutants concentrations (criteria pollutants) at different area categories of Ludhiana city, to prepare grid-wise emission inventory accounting for various sources in Ludhiana city, to project emission inventories for future under different control options, to conduct source apportionment study of particulate matter (PM10 and PM2.5) and to prepare an air quality action plan after prioritizing the control options.

  • This was the first project during my internship (when I was in my final year), I ran WRF-CMAQ simulations for different sources at India scale and and nested domain for city scale.

Education

Education

Delhi Technological University, Delhi, India

Thesis topic - ANALYSIS OF Ultra-Fine Particles (UFP), QUASI-UFP AND FINE PARTICLES IN INDOOR AND OUTDOOR MICROENVIRONMENT

Conducted the experiment in two micro-environment settings:

  • Indoor - Passive smoker's exposure to UFP, Q-UFP and PM2.5 in a ventilated and non-ventilated room
  • Outdoor - Exposure to students while walking alongside the road near university gate, at different time interval of the day

Experience

Work Experience

SENIOR RESEARCHER AUG'2021 – PRESENT

ENVIRONMENTAL DEFENSE FUND, Delhi, India.
Developing methodology for mobile monitoring technique and source apportionment study using a network of low‑cost sensors, satellite, and reference monitors

RESEARCH ASSOCIATE JUL'2020 – JUL '2021

THE ENERGY AND RESOURCES INSTITUTE, Delhi, India.
Worked on satellite data assimilation and integrating process and reaction-rate analysis in numerical air quality model WRF-CMAQ. Also studying about secondary organic aerosols formation in numerical models.

PROJECT ASSOCIATE JUN’2019 - JUN’2020

THE ENERGY AND RESOURCES INSTITUTE, Delhi, India.
Worked on air pollution modelling (WRF-CMAQ) along with developing national and regional emission inventories (GAINS-ASIA) and from secondary (government sources) and primary (surveys) datasets.

Get Motivated

4 years of college

Discovering your passion and relentlessly pursuing it is the key to an extraordinary journey.
During my undergraduate studies in Environmental Engineering at Delhi Technological University, I was uncertain about my future path and never considered higher education. However, everything changed when I embarked on a compulsory internship at a coal mining industry, Coal India Limited, in Talcher, Orissa. Witnessing the daily lives of people breathing coal particles ignited a profound fascination within me. The concept of mitigating indoor air pollution captured my imagination and refused to let go. Returning from the internship, I sought guidance from professors who could help me explore this idea. Unfortunately, they rejected my proposal based on my academic grades. This rejection became a pivotal moment, compelling me to forge ahead with my idea despite the setbacks. I realized that academic achievements played a crucial role in pursuing research (they do matter!). For two semesters, I dedicated myself to studying like never before, surpassing my previous efforts. As a result, I achieved remarkable academic performance, scoring 40% higher than my aggregate from the previous three years, with 81.8% in the 7th semester and 84% in the 8th semester. But my journey did not end there. I continued to refine my idea and decided to participate in a contest hosted by the esteemed late Dr. Kirk R. Smith, a Nobel Laureate from the University of California, Berkeley. Against formidable competition, I emerged victorious. This success opened doors for me, securing an internship at TERI, one of India's leading research institutes for Energy, Environment, and Sustainability. Furthermore, I received a job offer even before completing my college education. It is worth mentioning that despite the availability of college placements, I chose not to participate, driven by my newfound passion for research. Recognizing that research-focused companies rarely visited our campus, I bravely decided to take a necessary risk.
Remember, finding your passion can be a transformative experience. Embrace it wholeheartedly, overcome obstacles, and unlock a world of endless possibilities.

B.Tech Final Result
..................................

I Sem - 6.57
II Sem - 5.81
III Sem - 5.83
IV Sem - 5.65
V Sem - 6.05
VI Sem - 5.82
VII Sem - 8.18
VIII Sem - 8.4

6.51 CGPA

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