A012
Aerosols and Air Quality over South and Southeast Asia: Observations, Modeling and Impacts

Session ID#: 157544

Session Description:
The densely populated regions of South and Southeast Asia are subject to persistently high loadings of aerosols and key air pollutants, which lead to poor air quality and impact the regional atmospheric chemistry, climate, public health and agriculture. Dense haze associated with biomass burning, urban and industrial emissions often results in alarming degradation to air quality. Whereas extensive dust emissions combined with carbonaceous aerosols, can potentially affect summer monsoon processes, leading to enhanced vertical pollution transport. We invite presentations discussing observational, modeling and impact studies over South and Southeast Asia; with topics ranging from aerosols and trace gases characterization including aerosol-radiation and chemistry-climate interactions, and public health and agricultural impacts. We also welcome papers discussing effects of COVID-19 on air quality changes in South and Southeast Asia.
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0365 Troposphere: composition and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0368 Troposphere: constituent transport and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]

Primary Convener:  Shradda Dhungel, Environmental Defense Fund, New York, NY, United States
Conveners:  Ritesh Gautam, Environmental Defense Fund DC, Washington, United States and Tianjia Liu, University of California, Irvine, Department of Earth System Science, Irvine, United States
Student/Early Career Convener:  Ritesh Gautam, Environmental Defense Fund DC, Washington, United States
 
Examining short live climate forcer “black carbon” and its radiative forcing at a semi-urban site over the Indo-Ganegtic basin. (1061428)
Pratima Gupta1, Ashok Jangid1 and Ranjit Kumar Sr.2, (1)Dayalbagh Education Institute (Deemed University), Dayalbagh, Agra, UTTAR Pradesh, India, (2)Dayalbagh Education Institute (Deemed University), Dayalbagh, Agra, Chemistry, UTTAR Pradesh, India
 
Chemical Characterization of Seasonal Brown Carbon in the Indo-Gangetic plain (1063378)
Pooja Chaudhary1, Christopher P West1, Baerbel Sinha2 and Alexander Laskin3, (1)Purdue University, Department of Chemistry, West Lafayette, United States, (2)Indian Institute of Science Education and Research Mohali, Department of Earth and Environmental Sciences, SAS Nagar, India, (3)Purdue University, Department of Chemistry, West Lafayette, IN, United States
 
Assessing the Impacts of COVID-19 lockdowns on Site-specific Optical properties of PM2.5 Carbonaceous components and Mineral dust at Bhopal, India (1071610)
Ankur Bhardwaj1, Kajal Yadav2, Diksha Haswani2 and Ramya Sunder Raman3, (1)Indian Institute of Science Education and Research Bhopal, Bhopal, India, (2)Indian Institute of Science Education and Research Bhopal, Earth and Environmental Sciences, Bhopal, India, (3)Indian Institute of Science Education and Research, Bhopal, Earth and Environmental Sciences, Bhopal, India
 
Fuel sources to carbonaceous aerosols at the eastern fringe of the Tibetan Plateau, China: Δ14C and δ13C evidences (1074025)
Chaoliu Li1, Chao Zhang2, Yan Fangping3, Kang Shichang4, Yixi Liu1, Yongheng Gao5, Chen Pengfei3, Yinbo Xu6 and Cenlin He7, (1)Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China, (2)University of Chinese Academy of Sciences, Beijing, China, (3)Northwest Institute of Eco-Environment and Resources, CAS Chinese Academy of Sciences, Lanzhou, China, (4)Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, China, (5)Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China, (6)Southwest University, Chongqing, China, (7)National Center for Atmospheric Research, Research Applications Laboratory, Boulder, United States
 
Sources And Chemical Signatures Of Aqueous Brown Carbon and HULIS: Insights From NMR, 13C And 15N Isotopic Measurements (1078007)
Supriya Dey and Sayantan Sarkar, Indian Institute of Technology Mandi, School of Civil and Environmental Engineering, Mandi, India
 
An analysis of satellite and in situ surface observations of NO2 over Indian cities (1079861)
Deeya Viradia1, Caroline R Nowlan2 and Gonzalo Gonzalez Abad2, (1)Harvard-Smithsonian Center for Astrophysics, San Jose, United States, (2)Center for Astrophysics | Harvard & Smithsonian, Cambridge, United States
 
Interlinkages of Inorganic Reactive Nitrogen and Heavy Metals Abundance in Precipitation during Monsoon at JNU site in New Delhi, India (1080892)
Ankita Katoch and UC Kulshrestha, Jawaharlal Nehru University, School of Environmental Sciences, New Delhi, India
 
Toward a better understanding of atmospheric new particle formation and growth in India (1083000)
Vijay P Kanawade1, Mathew Sebastian1, Rakesh Hooda2 and Antti Hyvärinen2, (1)University of Hyderabad, Center for Earth, Ocean and Atmospheric Sciences, Hyderabad, India, (2)Finnish Meteorological Institute, Helsinki, Finland
 
Contrasting features in chemical characteristics and apportioned sources of fine aerosol over Semi-urban and Megacity atmosphere in eastern Indo-Gangetic Plain (1087579)
Kanishtha Dubey, Indian Institute of Technology Kharagpur, Kharagpur, India and Shubha Verma, Indian Institute of Technology Kharagpur, Civil engineering, Kharagpur, India
 
Efficient Uptake of Atmospheric Lead (Pb) by Ferns Quantified through Pb Concentrations and Isotope Ratios (1090390)
Iravati Ray, Jadavpur University, Kolkata, India, Reshmi DAS, Jadavpur University, School of Environmental Studies, Kolkata, India and Sambuddha Misra, Indian Institute of Science, Bangalore, Centre for Earth Sciences, Bangalore, India
 
Seasonal Variation and Health Risks associated with PM2.5 and NO2 over Indo-Gangetic Plain (1092747)
Vikas Goel1, Ajit Kumar2, Srishti Jain3, Vikram Singh3 and Mayank Kumar1, (1)Indian Institute of Technology Delhi, Department of Mechanical Engineering, New Delhi, India, (2)Indian Institute of Technology Delhi, Mechanical Engineering, Delhi, India, (3)Indian Institute of Technology Delhi, Chemical Engineering, New Delhi, India
 
Field-based Emission Factor Estimation for the Residential Heating Activities in Western India (1101584)
Navinya Chimurkar1, Taveen Singh Kapoor1, Anurag Kumar Gupta2, Saurabh Lonkar2, Chandra Venkataraman3 and Harish C Phuleria4, (1)Indian Institute of Technology Bombay, Interdisciplinary Program in Climate Studies, Mumbai, India, (2)Indian Institute of Technology Bombay, Environmental Science and Engineering Department, Mumbai, India, (3)Indian Institute of Technology Bombay, Department of Chemical Engineering, Interdisciplinary Program in Climate Studies, Mumbai, India, (4)Indian Institute of Technology Bombay, Environmental Science and Engineering Department, Interdisciplinary Program in Climate Studies, Mumbai, India
 
Quantifying background concentration levels of ambient pollutants using meteorological filtering and statistical techniques for Delhi NCT region. (1101710)
Rahul Chaurasia, Indian Institute of Technology Delhi, Centre For Atmospheric Sciences, New Delhi, India and Manju Mohan, Indian Institute of Technology Delhi, Centre for Atmospheric Sciences, New Delhi, India
 
Air Quality Management in India Through a Regional Air-shed Approach (1102846)
Sagnik Dey1, Alok Kumar2, Kuldeep Dixit3, Fahad Imam2, Varun Katoch2, Priyanka Rao2, Ekta Chaudhary3, Sumit Sharma4, Nimish Singh4 and Shivang Agarwal4, (1)Indian Institute of Technology Delhi, Centre for Atmospheric Sciences, New Delhi, India, (2)IIT Delhi, New Delhi, India, (3)Indian Institute of Technology Delhi, New Delhi, India, (4)The Energy and Resources Institute TERI, New Delhi, India
 
Reducing Biogenic Secondary Organic Aerosols formation in India using WRF-Chem model (1103965)
Sahir Azmi and Mukesh Sharma, Indian Institute of Technology Kanpur, Civil Engineering, Kanpur, India
 
Observations of particle number size distributions and new particle formation in six Indian locations (1108003)
Mathew Sebastian1, Sobhan Kumar Kompalli2, Anil Kumar V3, Sandhya Jose4, Babu S.S5, Pandithurai G.3, Sachchidanand Singh4, Rakesh Hooda6, Vijay Soni7, Jeffrey R Pierce8, Ville Vakkari6, Eija Asmi6, Daniel Westervelt9, Antti Hyvärinen6 and Vijay P Kanawade1, (1)University of Hyderabad, Center for Earth, Ocean and Atmospheric Sciences, Hyderabad, India, (2)Vikram Sarabhai Space Center, Thiruvananthapuram, India, (3)Indian Institute of Tropical Meteorology, Pune, India, (4)National Physical Laboratory, New Delhi, India, (5)Space Physics Laboratory, VSSC, Thiruvananthapuram, India, (6)Finnish Meteorological Institute, Helsinki, Finland, (7)India Meteorological Department, New Delhi-110003, India, (8)Colorado State University, Department of Atmospheric Science, Fort Collins, CO, United States, (9)Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States
 
The Observational Evidence of the Modulation of Atmospheric Aerosols by the Tropical Intra-seasonal Oscillations Over the Indian Region (1113481)
Sanatan Binisia, Velu Vinoj and Kiranmayi Landu, Indian Institute of Technology Bhubaneswar, School of Earth Ocean and Climate Sciences, Bhubaneswar, India
 
Atmospheric Stability Led to Extreme PM2.5 Pollution: An Analysis of Meteorological Causes of Fine Particulate Pollution using a Generalized Additive Model (1113900)
Siyi Wang and Benjamin de Foy, Saint Louis University Main Campus, Department of Earth and Atmospheric Sciences, Saint Louis, United States
 
Impact of Aerosol Radiative Effects on Surface Ozone in Megacity Delhi, India (1132224)
Lakhima Chutia, University of Iowa, Department of Chemical and Biochemical Engineering, Iowa, United States, Jun Wang, University of Iowa, Chemical and Biochemical Engineering, Iowa City, IA, United States and Huanxin Zhang, University of Iowa, Department of Chemical and Biochemical Engineering, Iowa City, IA, United States
 
Characteristic Aerosol Properties during Monsoon and COVID Lockdown under Cleaner Conditions: Source Apportionment and Chemical Properties from a High-Altitude site in India (1134758)
Kavyashree N Kalkura1,2, Aishwarya Singh1,2, Snehitha M. Kommula2, Upasana Panda2, Ramesh Chand K.A3, Ernesto Villegas4, James D Allan5, Gordon McFiggans4, Hugh Coe6, Pengfei Liu7, Ravikrishna R8 and Sachin S Gunthe1,2, (1)Indian Institute of Technology Madras, Laboratory for Atmospheric and Climate Sciences, Chennai, India, (2)Indian Institute of Technology Madras, Department of Civil Engineering, Chennai, India, (3)College of Engineering Munnar, Department of Mechanical Engineering, Munnar, India, (4)University of Manchester, School of Earth, Atmospheric and Environmental Sciences, Manchester, United Kingdom, (5)Department of Earth and Environmental Sciences, The University of Manchester, Manchester, United Kingdom, (6)University of Manchester, Department of Earth and Environmental Science, Manchester, United Kingdom, (7)Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, United States, (8)Indian Institute of Technology Madras, Department of Chemical Engineering, Chennai, India
 
Robust observations of smoke – mixing layer height - air quality coupling during crop residue burning season: Implications of elevated smoke layers over Delhi (1136721)
Alaa Mhawish, NUIST Nanjing University of Information Science and Technology, Nanjing, China, Chandan Sarangi, Indian Institute of Technology, Madras, Department of Civil Engineering, Chennai, India, B Priyadharshini, Bennett University, Department of Civil Engineering, Greater Noida, India, Manish Kumar, Department of Environmental Science , Stockholm University, Department of Environmental Science, Stockholm, Sweden, Muhammad Bilal II, School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing, China and Zhongfeng Qiu, NUIST Nanjing University of Information Science and Technology, Department of marine science, Nanjing, China
 
Spatial and Temporal Variation of Aerosol Optical Depths over Six Major Cities in Bangladesh (1137806)
Shahid Uz Zaman1, Md. Riad Sarkar Pavel1, Khaled Shaifullah Joy1, Farah Jeba1, Md. Safiqul Islam1, Sanchita Paul2, Md. Aynul Bari2 and Abdus Salam1, (1)University of Dhaka, Department of Chemistry, Dhaka, Bangladesh, (2)Department of Environmental and Sustainable Engineering, University at Albany, State University of New York, New York, United States
 
Octanol-air (KOA) and Physical partitioning of Polycyclic Aromatic Hydrocarbons (PAHs) and their Nitro derivatives (1139143)
Puneet Kumar Verma1, Dinesh Sah2, Rangu Satish1, Neeraj Rastogi1, Maharaj Kumari Kandikonda2 and Anita Lakhani2, (1)Physical Research Laboratory, Geoscience Division, Ahmedabad, India, (2)Dayalbagh Educational Institute, Chemistry, Agra, India
 
The air pollution potential and its changes over the Indian Region (1140505)
Velu Vinoj, Indian Institute of Technology Bhubaneswar, School of Earth Ocean and Climate Sciences, Bhubaneswar, India and Swadhish Venugopal, Indian Institute of Technology Bhubaneswar, School of Earth Ocean and Climate Scienes, Bhubaneswar, India
 
Variation in emission of trace gases and particulate matter from residential fuels during different stages of combustion over National Capital Territory, India. (1145919)
Rahul Arya1,2, Lokesh Yadav1,3, Arnab Mondal1,3, Ritu Jangirh1,2, Sakshi Ahlawat1,3, T.K. Mandal1,2, Sudhir Kumar Sharma1,3, B.R. Gurjar4 and Eiko Nemitz5, (1)CSIR-National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi, India, 110012, New Delhi, India, (2)Academy of Scientific and Innovative Research (AcSIR),Ghaziabad, 201002, Ghaziabad, India, (3)Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Ghaziabad, India, (4)Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, PIN – 247 667, India, Roorkee, India, (5)UK Centre for Ecology and Hydrology, Bush Estate, Penicuik, EH26 0QB, UK, Edinburgh, United Kingdom
 
Modelling of seasonal variation in radiative perturbation due to black carbon(BC) over India, in a chemical transport model (CHIMERE), with latest constrained BC emission (1150856)
Sanhita Ghosh, Indian Institute of Technology Kharagpur, Advanced Technology Development Center, Kharagpur, India and Shubha Verma, Indian Institute of Technology Kharagpur, Civil engineering, Kharagpur, India
 
Seasonal Trend in Mass Size Distribution of Size-segregated Aerosols at Central Delhi, India (1151042)
Nisha Rani, National Physical Laboratory, New Delhi, India
 
Two Thirds of India’s Recent PM2.5 Air Quality Improvement is Driven by Meteorological Variability (1154014)
Yuanyu Xie and Denise L Mauzerall, Princeton University, Princeton School of Public and International Affairs, Princeton, United States
 
Fire episodes and air quality over India from January to June. (1155555)
Ummed Saharan, CSIR-National Physical Laboratory, Dr. KS Krishnan Road, New Delhi, India, Delhi, India, Tuhin Kumar Mandal, Principal Scientist, Environmental Sciences and Biomedical Metrology Division, Delhi, India, Rajesh Kumar, National Center for Atmospheric Research, Research Applications Laboratory, Boulder, CO, United States and Shyam Lal, Physical Research Laboratory, Ahmedabad, India
 
Unravelling the Sources of PM2.5 over Eastern Himalayas of India: Insights into Receptor Modelling and Transport Pathways (1156180)
Akansha Rai, CSIR-National Physical Laboratory (NPL), Environmental Sciences and Biomedical Metrology Division, New Delhi, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India, Abhijit Chatterjee, Bose Institute, Environmental Sciences Section, Kolkata, India, Tuhin Kumar Mandal, Principal Scientist, Environmental Sciences and Biomedical Metrology Division, Delhi, India and Sudhir Kumar Sharma, National Physical Laboratory, New Delhi, India
 
A 1-D Model to Retrieve the Vertical Profiles of Minor Atmospheric Constituents for Cloud Microphysical Modelling (1157340)
Kavita Patnaik1, Subhrajit Rath1, Amit P Kesarkar1, Jyoti Bhate1 and Chandrasekar Anantharaman2, (1)National Atmospheric Research Laboratory, Gadanki, India, (2)Indian Institute of Space Science and Technology, Earth and Space Science, Trivandrum, India
 
Multi-pollutant high resolution exposure assessment in Vietnam, in support of tuberculosis research (1162734)
Megan Christiansen, University of Iowa, Chemical and Biochemical Engineering, Iowa City, IA, United States, Gregory R Carmichael, Univ Iowa, Iowa City, IA, United States, Beiming Tang, University of Iowa, Iowa City, IA, United States, Charles O Stanier, IIHR—Hydroscience and Engineering, Iowa City, IA, United States and Robert Blount, Pulmonary and Critical Care Medicine, University of Iowa, Iowa City, United States
 
Chemical Characterization and Source Attribution of Fine Carbonaceous Aerosols at a Regional Background Location in Northern India (1163407)
Pooja Manwani1, Taveen Singh Kapoor1, Pradnya Lokhande1, Sandeep Singh Duhan2, Jitender Singh Laura2, Chandra Venkataraman3 and Harish C Phuleria4, (1)Indian Institute of Technology Bombay, Interdisciplinary Program in Climate Studies, Mumbai, India, (2)Maharshi Dayanand University, Department of Environmental Sciences, Rohtak, India, (3)Indian Institute of Technology Bombay, Department of Chemical Engineering, Interdisciplinary Program in Climate Studies, Mumbai, India, (4)Indian Institute of Technology Bombay, Environmental Science and Engineering Department, Interdisciplinary Program in Climate Studies, Mumbai, India
 
Aerosol-induced Atmospheric Radiative Forcing and Heating Rate over South Asia increase due to Black Carbon (BC) and BC mixed with dust (1163591)
Kamran Ansari and S Ramachandran, Physical Research Laboratory, Ahmedabad, India
 
On the Morphological Characterization of Size Segregated Aerosols by Socio-Economic Status of Urban Households (1169869)
Himanshi Rohra, University of Pune, Chemistry, Pune, India, Gursumeeran P Satsangi, Department of Chemistry, Savitribai Phule Pune University, Pune , India, Chemistry, Pune, India and Ajay Taneja, DR BR AMBEDKAR UNIVERSITY, CHEMISTRY, Agra, India
 
Elucidating the Impacts of COVID-19 Lockdown on Air Quality and Ozone Chemical Characteristics in India (1178834)
Gregory R Carmichael1, Behrooz Roozitalab2, Sarath K Guttikunda3 and Maryam Abdioskouei1, (1)University of Iowa, Iowa City, IA, United States, (2)The University of Iowa, Chemical and Biochemical Engineering, Iowa City, IA, United States, (3)Urban Emisssions Info, Porvorim, Goa, India
 
Long-term Observations of Smog Intensification over Northern India Associated with Aerosol-Radiation-Meteorological Feedbacks (1181759)
Piyushkumar N Patel, NASA Jet Propulsion Laboratory, Aerosols & Clouds, Pasadena, CA, United States, Ritesh Gautam, Environmental Defense Fund DC, Washington, United States, Manoj Kumar Singh, University of Petroleum and Energy Studies, School of Engineering, Dehradun, India, Tianjia Liu, Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, USA, Cambridge, MA, United States, Loretta J. Mickley, Harvard University, School of Engineering and Applied Sciences, Cambridge, MA, United States, Hiren T Jethva, NASA Goddard Space Flight Center, Atmospheric Chemistry and Dynamics Laboratory (Code 614), Greenbelt, United States and Ruth S DeFries, Columbia University, Ecology, Evolution, and Environmental Biology, New York, NY, United States
 
Implication of Aerosol and Climate change on Crop Production in Indo Gangetic Plains of India (1181982)
Amit Kumar Singh, Deshbandhu College,University of Delhi, New Delhi, India and Geetika Sonkar, Dr. Ram Manohar Lohia Avadh University, Environmnetal Sciences, Ayodhya, India
 
The Impact of COVID-19 Shutdowns and Fuel Shortages on the Inter-Annual, Seasonal, Weekly and Diurnal Variability of Air Quality in Colombo, Sri Lanka (1186006)
Tharushi Ekanayake1, Nipuni Alahakoon2, Ushan Adithya2 and Lareef Zubair1, (1)Foundation for Environment, Climate and Technology, Digana Village, Sri Lanka, (2)Tropical Climate Guarantee, Kandy, Sri Lanka
 
Aerosol Effects on Clear-Sky Shortwave Heating in the Asian Monsoon Tropopause Layer (1187064)
Jonathon S Wright, Tsinghua University, Beijing, China and Jie Gao, Tsinghua University, Department of Earth System Science, Beijing, China
 
Meteorological Effect and PM2.5 Concentration in the Most Populous Cities in Myanmar: Current Challenge and Future Actions on Air Quality (1188771)
Chit Wityi Oo, Northern Illinois University, DeKalb, IL, United States, Tomoyuki Shibata, Northern Illinois University, Public Health Program, Dekalb, IL, United States and Myo Win Maung, Northern Illinois University, DeKalb, United States
 
Variability of Hygroscopicity in Smoke Aerosols Measured in the United States and Southeast Asia (1189719)
Amanda Cresanti, Stony Brook University, Stony Brook, NY, United States, Eva-Lou Edwards, University of Arizona, Tucson, AZ, United States, Andreas Joel Beyersdorf, NASA Langley Research Center, Hampton, United States, Roya Bahreini, University of California Riverside, Environmental Sciences, Riverside, United States and SEAC4RS Science Team
 
PM2.5 pollution over Northern India is influenced by seasonally varying boundary layer meteorology (1191420)
Mi Zhou1, Denise L Mauzerall2 and Yuanyu Xie2, (1)Princeton University, Princeton School of Public and International Affairs, Princeton, NJ, United States, (2)Princeton University, Princeton School of Public and International Affairs, Princeton, United States
 
Characteristics and atmospheric processes of inorganic ions in PM2.5 and PM10 over heavily polluted industrial city in the Indo Gangetic Plain (1199990)
Lovleen Gupta, Delhi Technological University, Delhi, India, Swati Joshi, Indian Institute of Technology Delhi, Department of Civil Engineering, New Delhi, India, Gazala Habib, Indian Institute of Technology Delhi, New Delhi, India, Ramya Sunder Raman, Indian Institute of Science Education and Research, Bhopal, Earth and Environmental Sciences, Bhopal, India and gazala habib
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