Mathematical and Physical Sciences

Professor Aditya Vaishya is an Assistant Professor at the Division of Mathematical and Physical Sciences, School of Arts and Sciences, Ahmedabad University. He is an Atmospheric Physicist specialising in physicochemical characterisation of atmospheric aerosols in diverse environments, aerosol - radiation interaction under sub-saturated and super-saturate humidity fields, and aerosol instrumentation, and whose research interests include aerosol-cloud-radiation interaction,  development of light-weight sensors for atmospheric studies, and air quality modelling.

Dr Aditya’s interest in the environmental impact of aerosols - tiny solid or liquid particles in the atmosphere - solidified while researching his PhD, obtained in 2012 from the Centre for Climate & Air Pollution Studies, School of Physics, National University of Ireland Galway. During his PhD, he developed a state-of-the-art instrument for quantifying aerosol optical growth, and characterised the physicochemical properties of marine aerosols. Specifically, he delineated the role of marine organics in altering aerosol radiative properties and developed parameterisations for this role.

Prior to starting his PhD, Dr Aditya worked at the Space Applications Centre, Ahmedabad, where he was involved in validation activities related to ISRO’s Oceansat satellite. He is actively involved with ISRO’s Geosphere-Biosphere Programme and Regional Aerosol Warming Experiment, and Indo-UK programme on South West Asian Aerosol Monsoon Interactions. He was an INSPIRE Faculty at the Vikram Sarabhai Space Centre’s Space Physics Laboratory in Thiruvananthapuram, India. At VSSC, he worked on a project funded by the Department of Science and Technology and the Indian Space Research Organisation, leading a team to develop an instrument for the study of aerosol hygroscopic properties. He is also involved in India’s polar research programme and was deputed to the Indian Arctic station, Himadri, for aerosol-cryosphere interaction studies.

• Air Quality
• Atmospheric aerosols: Aerosol-Cloud-radiation interaction; Physicochemical characterisation; Instrumentation
• Modelling: Aerosol-radiation interaction; Aerosol Thermodynamics
• Satellite remote sensing 

Scientific Peer-Reviewed Publications: (https://scholar.google.com/citations?user=x4j32f8AAAAJ&hl=en)

• Parmar, M., Vaishya, A.*, Ojha, N., Pandya, M. R., Girach, I. A., (2024). Addressing Observational Gaps in Aerosol Parameters using Machine Learning: Implications to Aerosol Radiative Forcing. Atmospheric Environment, https://doi.org/10.1016/j.atmosenv.2024.120661.
• Singh P., Vaishya A.*, Rastogi, S., ‘Investigating changes in atmospheric aerosols properties over the Indo-Gangetic Plain during different phases of COVID-19-induced lockdowns’, Environmental Science and Pollution Research, 30, 100215–100232, doi.org/10.1007/s11356-023-29449-x, 2023.
• Lin C., Ceburnis D., Vaishya A., Trubetskaya A., Tan Y., Wang T., Smith W., Johnson R., Xu W., Monaghan Rory F.D., O’Dowd C., Ovadnevaite J., ‘Air Quality - Climate Forcing Double Whammy from Domestic Firelighters’,  npj Climate and Atmospheric Science, doi.org/10.1038/s41612-023-00427-x, 2023.
• Singh A., Raj S. S., Panda U., Kommula S. M., Jose C., Liu T., Huang S., Swain B., Pöhlker M.L., Villegas E.R., Ojha N., Vaishya A., Bigi A., Ravikrishna R., Zhu Q., Shi L., Allen J., Martin S.T., McFiggans G., Andreae M. O., Pöschl U., Coe H., Bianchi F., Su H., Kanawade V.P., Liu P., and Gunthe S.S., ‘Rapid growth and high cloud-forming potential of anthropogenic sulfate aerosol in a thermal power plant plume during the Covid lockdown in India’, npj Climate and Atmospheric Science, doi.org/10.1038/s41612-023-00430-2, 2023.
• Vaishya A., Raj S., Singh A., Sivakumar S., Ojha N., Sharma Som K., Ravikrishna R., Gunthe Sachin S., ‘Black carbon over tropical Indian coast during the COVID-19 lockdown: inconspicuous role of coastal meteorology’, Environmental Science and Pollution Research, 30 (15), 44773-44781, doi.org/10.1007/s11356-023-25370-5, 2023.
• Gogoi M. M., Pandey S. K., Arun B. S., Nair V. S., Thakur R. C., Chaubey J. C., Tiwari A. T., Manor M. R., Kompalli S. K., Vaishya A., Prijith S. S., Hedge P.,  Babu S. S., ‘Long-term changes in aerosol radiative properties over Ny-Ålesund: Results from Indian scientific expeditions to the Arctic’, Polar Science, 30, doi.org/10.1016/j.polar.2021.100700, 2021.
• Gogoi M. M., Jayachandran V. N., Vaishya A., Babu S. S., Satheesh S. K., Moorthy K. K., ‘Air-borne in-situ measurements of aerosol size distributions and BC across the IGP during SWAAMI’, Atmospheric Chemistry and Physics, https://acp.copernicus.org/articles/20/8593/2020/, 2020.
• Singh P., Vaishya A., Rastogi S., Babu S., ‘Seasonal heterogeneity in aerosol optical properties over the subtropical humid region of northern India’, Journal of Atmospheric and Solar-Terrestrial Physics, 201, 105246 (1-14), doi:10.1016/j.jastp.2020.105246, 2020.
• Jayachandran V. N., Suresh Babu S. N., Vaishya A., Gogoi M. M., Nair V. S., Satheesh S. K., Krishna Moorthy K., ‘Altitude profiles of CCN characteristics across the Indo-Gangetic Plain prior to the onset of the Indian summer monsoon’, Atmospheric Chemistry and Physics, 20, 561–576, doi:10.5194/acp-2019-571, 2020.
• Vaishya A.*, Babu S. Suresh, Jayachandran V., Gogoi M.M., Lakshmi N.B., Moorthy K.K., Satheesh S.K., 'Large contrast in the vertical distribution of aerosol optical properties and radiative effects across the Indo-Gangetic Plain during SWAAMI-RAWEX campaign', Atmospheric Chemistry and Physics, doi: 10.5194/acp-2018-686, 2018.
• Pandolfi M., Alados-Arboledas L., Alastuey A., Andrade M., Artiñano B., Backman J., Baltensperger U., Bonasoni P., Bukowiecki N., Collaud Coen M., Conil S., Coz E., Crenn V., Dudoitis V., Ealo M., Eleftheriadis K., Favez O., Fetfatzis P., Fiebig M., Flentje H., Ginot P., Gysel M., Henzing B., Hoffer A., Holubova Smejkalova A., Kalapov I., Kalivitis N., Kouvarakis G., Kristensson A., Kulmala M., Lihavainen H., Lunder C., Luoma K., Lyamani H., Marinoni A., Mihalopoulos N., Moerman M., Nicolas J., O'Dowd C., Petäjä T., Petit J. E., Pichon J. M., Prokopciuk N., Putaud J. P., Rodríguez S., Sciare J., Sellegri K., Stamenov D. B., Swietlicki E., Titos G., Tuch T., Tunved P., Ulevicius V., Vaishya A., Vana M., Virkkula A., Vratolis S., Weingartner E., Wiedensohler A., Laj P., ‘A European Aerosol Phenomenology-6: Scattering Properties of Atmospheric Aerosol Particles from 28 ACTRIS Sites’, Atmospheric Chemistry and Physics, 18, 7877–7911, doi: 10.5194/acp-18-7877-2018, 2018.
• Gogoi M.M., Babu S.S., Pandey S.K., Nair V.K., Vaishya A., Girach I., Koushik N., ‘Snow Darkening due to Black Carbon in the Arctic and the Antarctic’, Polar Science, doi:10.1016/j.polar.2018.03.002, 2018.
• Vaishya A.*, Singh P., Rastogi S., Babu S. Suresh, ‘Aerosol Black Carbon Quantification in the Central Indo-Gangetic Plain: Seasonal Heterogeneity and Source Apportionment’, Atmospheric Research, doi:10.1016/j.atmosres.2016.10.001, 2017.
• Preiβler J., Martucci G., Saponaro G., Ovadnevaite J., Vaishya A., Kolmonen P., Ceburnis D., Sogacheva L., Leeuw G., O’Dowd C., ‘Six Years of Surface Remote Sensing of Stratiform Warm Clouds of Marine and Continental Air Over Mace Head, Ireland’, Journal of Geophysical Research: Atmospheres, 121, 14,538–14,557, doi:10.1002/2016JD025360, 2016.
• O’Dowd C.D., Ceburnis D., Ovadnevaite J., Vaishya A., Rinaldi M., Facchini M., ‘Do Anthropogenic, Continental or Coastal Aerosol Sources Impact on a Marine Aerosol Signature at Mace Head?’ Atmospheric Chemistry and Physics, 10, 10687-10704, doi: 10.5194/acp-14-10687-2014, 2014.
• Vaishya A., Ovadnevaite J., Bialek J., Jennings S.G., Ceburnis D., O’Dowd C.D., ‘Bistable Effect of Organic Enrichment on Sea-Spray Radiative Properties.’ Geophysical Research Letters, 40, 6395-6398, doi: 10.1002/2013GL058452, 2013.
• Rinaldi M., Fuzzi S., Decesari S., Marullo S., Santoleri R., Provenzale A., Hardenberg J., Ceburnis D., Vaishya A., O'Dowd C., Facchini M., ‘Is Chlorophyll-a the Best Surrogate for Organic Matter Enrichment in Submicron Primary Marine Aerosol?’ Journal of Geophysical Research: Atmospheres, doi: 10.1002/jgrd.50417, 2013.
• Vaishya A., Jennings S.G., O’Dowd C.D., ‘Wind-driven Influences on Aerosol Light Scattering in North-East Atlantic Air.’ Geophysical Research Letters, 39, L05805, doi:10.1029/2011GL050556, 2012.
• Vaishya A.*, Jennings S.G., O'Dowd C.D., ‘Seasonal Variation of the Aerosol Light Scattering Coefficient in Marine Air of the Northeast Atlantic.’ Advances in Meteorology, vol. 2011, Article ID 170490, doi:10.1155/2011/170490, 2011.
• O’Dowd C.D., Ceburnis D., Ovadnevaite J., Martucci G., Bialek J., Monahan C., Berresheim H., Vaishya A., Grigas T., Jennings S.G., McVeigh P., Varghese S., Flanagan R., Martin D., Moran E., Lambkin K., Semmler T., Perrino C., McGrath R., ‘The Eyjafjallajökull Ash Plume Part I: Physical, Chemical and Optical Characteristics.’  Atmospheric Environment, 48, 129 – 142, doi:10.1016/j.atmosenv.2011.07.004, 2011.
• O’Dowd C.D., Varghese S., Martin D., Flanagan R., Ceburnis D., Ovadnevaite J., Martucci G., Bialek J., Monahan C., Berresheim H., Vaishya A., Grigas T., McGraw Z., Jennings S.G., Langmann B., Semmler T., McGrath R., ‘The Eyjafjallajökull Ash Plume Part 2: Simulating Ash Cloud Dispersion With REMOTE.’ Atmospheric Environment, 48, 143 – 151, doi:10.1016/j.atmosenv.2011.10.037, 2011.
• Fierz-Schmidhauser R., Zieger P., Vaishya A., Monahan C., Bialek J., O'Dowd C. D., Jennings S. G., Baltensperger U., Weingartner E., ‘Light Scattering Enhancement Factors in the Marine Boundary Layer (Mace Head, Ireland).’ Journal of Geophysical Research: Atmospheres, 115 (20), D20204, doi:10.1029/2009JD013755, 2010.

ISRO Technical Reports:

• Kompalli S. K., Vaishya A., Ajeeshkumar P.S., ‘Design and Performance Evaluation of Dryer Module of the Aerosol Humidograph Instrument’, Space Physics Laboratory, Vikram Sarabhai Space Centre, ISRO-VSSC-TR-0513-0-18 & SPL-TR-02-2018, December, 2018.
• Vaishya A., ‘Development of an Experimental Setup for the Study of Aerosol Hygroscopic Properties (Particle Loss Simulation in the AHI)’, Space Physics Laboratory, Vikram Sarabhai Space Centre, ISRO-VSSC-TR-0559-0-17 & SPL-TR-02-2017, December, 2017.
• Ajeeshkumar P.S., Vaishya A., Kompalli S. K., ‘Development of a Controller Unit for Motorised Ball Valves of the Aerosol Humidograph Instrument’, Space Physics Laboratory, Vikram Sarabhai Space Centre, ISRO-VSSC-TR-0570-0-17 & SPL-TR-03-2017, December, 2017.
• Ajeeshkumar P.S., Vaishya A., Kompalli S. K., ‘Development of an Experimental Setup for the Study of Aerosol Hygroscopic Properties (Electrical Integration and Software Development)’, Space Physics Laboratory, Vikram Sarabhai Space Centre, ISRO-VSSC-TR-0585-0-16 & SPL-TR-02-2016, November, 2016. 
• Vaishya A., Kompalli S. K., Ajeeshkumar P. S., ‘Development of an Experimental Setup for the Study of Aerosol Hygroscopic Properties (Design Overview and Technical Details)’, Space Physics Laboratory, Vikram Sarabhai Space Centre, ISRO-VSSC-TR-0434-0-16 & SPL-TR-01-2016, August, 2016. 

Conference Proceedings:

• Abdullah H. B., Singh P., Vaishya A., Prasad P., Rastogi S., ‘Decadal trend of black carbon aerosols at a semi-urban location in the central IGP.’ Indian Aerosol Science and Technology Association (IASTA), IASTA - 2023 Conference Proceedings, Volume 23, pp. 158-159, doi: 10.5281/zenodo.10648638, 12th - 14th December, 2023.
• Singh P., Vaishya A., Rastogi S., ‘Effect of covid-19 restrictive measures on aerosols in the Indo-Gangetic Plain region.’ Indian Aerosol Science and Technology Association (IASTA), IASTA - 2023 Conference Proceedings, Volume 23, pp. 122-123, doi: 10.5281/zenodo.10648638, 12th - 14th December, 2023.
• Singh P., Abdullah B. H., Vaishya A., Prasad P., Rastogi S., ‘Identification of aerosol types over the central Indo-Gangetic Plain', IEEE Xplore URSI Regional Conference on Radio Science (URSI RCRS-2022) Proceedings, pp. 1-4, doi: 10.23919/URSI-RCRS56822.2022.10118438, 1st -4th December, 2022.
• Vaishya A., Kompalli S. K., AJEESHKUMAR P. S., Babu S. Suresh, ‘Characterization of the 'Aerosol Humidograph Instrument' for Aerosol Optical Growth Studies.’ Indian Aerosol Science and Technology Association (IASTA), IASTA - 2018 Conference Proceedings, Volume 23, pp. 841-844, 26th - 28th November, 2018.
• Vaishya A., Babu S. Suresh, Jayachandran V., Gogoi M.M., Lakshmi N.B., Moorthy K.K., Satheesh S.K., ‘Vertical Structure of Optical and Radiative Effects of Aerosols Across the Indo-Gangetic Plain.’ Indian Aerosol Science and Technology Association (IASTA), IASTA - 2018 Conference Proceedings, Volume 23, pp. 853-856, 26th - 28th November, 2018.
• Singh P., Vaishya A., Rastogi S., ‘Aerosol Characterization in the Subtropical Humid Region of Northern India.’ Indian Aerosol Science and Technology Association (IASTA), IASTA - 2018 Conference Proceedings, Volume 23, pp. 220-223, 26th - 28th November, 2018.
• Vaishya A., Kompalli S.K.K., Babu S. Suresh, ‘Aerosol Humidograph Instrument for the Study of Aerosol Hygroscopic Properties.’ Indian Aerosol Science and Technology Association (IASTA), IASTA - 2016 Conference Proceedings, Volume 22, pp. 11-13, 6th -8th December, 2016.
• Singh P., Vaishya A., Rastogi S., ‘Characteristics of Black Carbon Aerosol and its Association with Different Atmospheric Parameters in the Central IGP’, Indian Aerosol Science and Technology Association (IASTA), IASTA - 2016 Conference Proceedings, Volume 22, pp. 640-643, 6th -8th December, 2016.
• Vaishya A., Singh P., Rastogi S., Babu S. Suresh, ‘Source Apportionment of Absorbing Aerosols in the Central Indo-Gangetic Plain’, SPIE Asia-Pacific Remote Sensing Conference, Proc. SPIE 9876, Remote Sensing of the Atmosphere, Clouds, and Precipitation VI, 98762F, doi:10.1117/12.2223580, 4th – 7th April, 2016.
• Singh P., Vaishya A., Rastogi S., ‘Radiative Characterization of Aerosols in the Central Indo-Gangetic Plain’, SPIE Asia-Pacific Remote Sensing Conference, Proc. SPIE 9876, Remote Sensing of the Atmosphere, Clouds, and Precipitation VI, 98762P, doi:10.1117/12.2223661, 4th – 7th April, 2016.
• Vaishya A., Babu, S. Suresh, ‘A Humidity Controlled Instrument to Measure Aerosol Radiative Properties.’ Indian Aerosol Science and Technology Association (IASTA), IASTA - 2014 Conference Proceedings, Volume 21, ID 14IA210, 11th - 13th November, 2014.
• Vaishya A., Ovadnevaite J., Bialek J., Jennings S.G., Ceburnis D., O’Dowd C.D., ‘Marine Organics Effect on Sea-Spray Light Scattering.’ Nucleation and Atmospheric Aerosols, 19th International Conference, AIP conference proceedings, 1527, pp. 718-721, doi: 10.1063/1.4803371, 2013.
• O’Dowd C., Ceburnis D., Vaishya A., Jennings S.G., Moran E., ‘Cleaner Air - Brightening the Pollution Perspective?’ Nucleation and Atmospheric Aerosols, 19th International Conference, AIP conference proceedings, 1527, pp. 579-582, doi: 10.1063/1.4803337, 2013. (Citations: 2)
• Vaishya A., Jennings S.G., O’Dowd C.D., ‘Aerosol Light Scattering Dependency on Wind Speed in Marine Air.’ Nucleation and Atmospheric Aerosols, 19th International Conference, AIP conference proceedings, 1527, pp. 563-566, doi: 10.1063/1.4803333, 2013.

• Invited Mentor: INSPIRE Science Camp – 2019, sponsored by the Department of Science and Technology, Organised by Christ College, Rajkot.
• Certificate of reviewer excellence 2018 in recognition of outstanding contributions as a reviewer for the Journal of Earth System Science, Bengaluru, April, 2019.
• Professional travel grant from the American Association for Aerosol Research (AAAR) for presenting my scientific work at the 10th International Aerosol Conference – 2018 at St. Louis, USA.
• Outstanding contribution in reviewing from The Editors of Atmospheric Research, Elsevier, The Netherlands, March, 2018.
• Best paper award: Vaishya A. et al., 'Radiative Implications of Altitudinal Heterogeneity in Aerosol Properties in the Indo-Gangetic Plain', at the International Conference on Understanding, Predicting and Projecting Climate change over the Asian Region (UPCAR - 2017), 26th - 28th June, 2017, Tirupati, India.
• INSPIRE Faculty award by the Department of Science and Technology (DST), Government of India, 2014.
• Post-Doctoral fellowship from the Environmental Protection Agency (EPA), Ireland awarded by the School of Physics, National University of Ireland Galway, Galway, Ireland, May, 2012 – April, 2014.
• Keynote presentation at the Goldschmidt Conference, Florence, Italy, 2013.
• Doctoral fellowship from Global Earth Observation and Monitoring (GEOmon) project awarded by the School of Physics, National University of Ireland Galway, Galway, Ireland, May, 2008 – April, 2012. 
• Bursary for attending the European Aerosol Conference (EAC 2011), 4th – 9th September, 2011, Manchester, UK, 2011.
• Junior Research Fellowship by the Council of Scientific and Industrial Research (CSIR), Human Resource Development Group (HRDG), Government of India, 2006.
• Junior Research Fellowship by the Space Applications Centre (SAC), Indian Space Research Organization (ISRO), Ahmedabad, India, 2006.
• Junior Research Fellowship by the Jawaharlal Nehru University (JNU), Central University, New Delhi, India, 2006.

• Reviewer: Journal of Geophysical Research; Scientific Reports; Atmospheric Research; Environmental Pollution; Journal of Earth System Sciences; Environmental Science and Pollution Research; Atmospheric Pollution Research; Physics Education; Journal of the Indian Society of Remote Sensing.
• Scientific steering committee member: URSI RCRS 2024.
• WeATher and Climate Hackathon (WATCH) steering committee member
• Convener: Commission F - Wave Propagation and Remote Sensing (planetary atmospheres, surfaces and sub-surfaces), URSI RCRS 2022.
• Local Coordinator for the Physics Training and Talent Search (PTTS) 2022 summer school, July 1st – July 21st 2022, which was hosted by Ahmedabad University and funded by the Infosys Science Foundation.
• Local Coordinator for the Physics Training and Talent Search (PTTS) 2021 summer school, July 3rd – July 25th 2021, which was hosted by Ahmedabad University and funded by the Infosys Science Foundation.
• Panel member: Grant Writing Webinar Series - DST INSPIRE Faculty Fellowship, Organized by SCI-ROI on 3rd April, 2021.
• Session Co-Convener of the Special Session under Commission F, namely Remote Sensing of Composition, Chemistry and Climatic aspects of Atmosphere (Sub-Commission F12)  in URSI Regional Conference on Radio Science during 12-14 February, 2020.
• Panel member: 7th Panel Discussion of Discussion Forum for Online Teaching - Virtual Laboratories and Online Field work: Practicals during the Pandemic November 22nd, 2020.
• Teacher: Advanced B.Sc. (Physics) Summer Programme – 2019, sponsored by Gujarat Science Academy and Vikram A. Sarabhai Community Science Centre and organised by St. Xavier’s College, Ahmedabad.
• Technical Organizing Committee member, representing Ahmedabad University, for the INAC – 4 conference, 26-27 September, 2019, held at the Space Applications Centre (SAC), Ahmedabad and organized by the Indian Society of Systems for Science & Engineering (ISSE) - Ahmedabad Chapter and SAC.
• Organizing Committee Member of the Students’ Special Symposium (S3) on 27th September, 2019 at the Space Applications Centre, Ahmedabad.
• Society Member: Indian Aerosol Science and Technology Association (IASTA); Kerala Academy of Sciences (KAS); Indian Radio Science Society (InRaSS)

• FDP102 Environment and Climate Change
• PHY112 Electromagnetic Theory
• PHY121 Laboratory Physics – Mechanics
• PHY122 Laboratory Physics – Electromagnetism
• PHY221 Laboratory Physics – Optics
• PHY230 Introductory Astronomy
• PHY314 Electrical Circuits and Electronics
• PHY321 Laboratory Physics – Electronics
• ENV602 Air Quality
• PHY602 Computational Methods for Physics
• PHY731 Atmospheric Physics
• PHY732 Atmospheric Aerosols