Ph.D : 2024, "Theoretical development of forward and inverse gravity modeling and its application to the crustal structure estimation of south India", Cochin University of Science and Technology, Kochi, Kerala

M.Sc : 2012, Physics, Indian Institute of Technology Bombay

B.Sc : 2010, Physics, University of Calcutta, Kolkata, West Bengal

• 2024 - Present Scientist D, National Centre for Earth Science Studies.
• 2020 - 2023 Scientist C, National Centre for Earth Science Studies.
• 2016 - 2019 Scientist B, National Centre for Earth Science Studies.
• 2015 - 2016 Project Scientist B, High Impact Severe Weather Forecasting System, National Centre for Medium Range Weather Forecasting (NCMRWF), Noida, UP.
• 2013 - 2015 Trainee Scientist, Centre for Advanced Training in Earth System Sciences and Climate, Indian Institute of Tropical Meteorology (IITM), Pune, Maharashtra.

• Geophysics, Tectonics, Deep Learning .
• Primary expertise in numerical modeling and interpretations of crustal structures and their inherent heterogeneities for local and regional scales using geophysical datasets such as Gravity, Magnetics.

1. Scholarship, Recipient of West Bengal Government Scholarship for Higher Education, awarded by the Ministry of Higher Education, Government of West Bengal, India.
2. Scholarship, Recipient of Innovation for Scientific Pursuit of Inspire Research (INSPIRE), a National Scholarship awarded by the Department of Science & Technology (DST), Government of India for Academic Excellence in Natural Sciences.
3. CSIR- NET, Qualified in the subject PHYSICAL SCIENCES under CSIR fellowship scheme in Joint CSIR-UGC Test for Junior Research Fellowship and Eligibility for Lectureship (NET) held on 17-06-2012.
4. Junior Research Fellow (JRF), Qualified for JRF in IISER Kolkata, Department of Physical Sciences, Ministry of Education, Government of India.
5. Joint Entrance Screening Test (JEST), Secured All India Rank 78 (with percentile 98.09) conducted by Saha Institute of Nuclear Physics (SINP), India.
6. Graduate Aptitude Test in Engineering (GATE), Secured All India Rank 340 (with percentile 95.46) conducted by Indian Institute of Technology, Bombay (IIT BOMBAY), India.
7. Trainee Scientist position, Qualified for Trainee Scientist in IITM Pune, Centre for Advanced Training, Ministry of Earth Sciences, Government. of India
8. MoES (Ministry of Earth Science) travel grant for 27^th IUGG General Assembly, 2019, Montréal, Québec, Canada.

• Roy, A., Sharma, R. K., Jash, D., & Tomson, J. K. (2024). Innovative insights into Earth’s depths: Mohotopography estimation using Conditional Generative Adversarial Networks from observed gravityanomalies. In European Geophysical Union Gener2al Assembly (EGU-2024), Vienna, Austria.
• Roy, A., & Padma Rao, B. (2023). Gravity inversion with seismic constraints to map the crustalthickness beneath antarctica. In National Conference on Polar Sciences (NCPS-2023), Goa, India.
• Roy, A., & Tomson, J. K. (2023). High-resolution 3d moho structure estimation in southern India andsurrounding regions: Insights from gravity disturbances and seismic constraints. In Indian GeophysicalUnion Annual Convention (IGU-2023), Cochin, India.
• Chandrasekhar, N. P., & Roy, A. (2019). Study of geomagnetic data from Ettaiyapuram and Hyderabadmagnetic observatories, India over two solar cycles provide insights into atmospheric couplingprocesses. In 27th IUGG General Assembly, Montreal, Canada.
• Roy, A., Chandrasekhar, N. P., Arora, K., & Rao, N. P. (2019). Spatial & temporal characteristics of solarquiet & equatorial electrojet along American& south-east Asian sectors. In 27th IUGG General Assembly,Montreal, Canada.

• Training course on 'AI for Digital Transformation and Data-Driven Decision Making’ for MOES scientists at INCOIS, ITCOO, Hyderabad, India on November 6th to 9th, 2023.
• Pre-Antarctic Snow-Ice acclimatization training at ITBP Auli, India in connection to the 39th Indian Scientific Expedition to Antarctica on September 10th to October 3rd, 2019.
• India International Science Festival, Lucknow, India on October 5th to 8th, 2018.
• MATLAB training program, NCESS, Thiruvananthapuram, India, September 26th to 30th, 2016.
• 'Geodynamic processes, evolution of Geophysical fields, Tectonics and Climate’ at IISC Bangalore, September 2016 (1 week).

• Roy, A., Prasad, M., Rao B, P., & Tomson, J. (2023). Estimation of moho depth beneath southern Indian shield by inverting gravity anomalies constrained by seismic data. Journal of Geophysical Research: SolidEarth, e2022JB025651.
• Roy, A., Dubey, C. P., & Prasad, M. (2021a). Gravity inversion for heterogeneous sedimentary basin withb-spline polynomial approximation using differential evolution algorithm. Geophysics, 86(3), F35–F47.

• Member, American Geophysical Union (AGU)
• Member, European Geosciences Union (EGU)

• 0000-0002-4603-7760

1. Ai, H., Ekinci, Y. L., Balkaya, C., Alvandi, A., Ekinci, R., Roy, A., ... Pham, L. T. (2024). Modified barnacles mating optimizing algorithm for the inversion of self-potential anomalies due to oredeposits. Natural Resources Research, 1–30.
2. Roy, A., Sharma, R. K., Jash, D., Rao B, P., Dev, J. A., & Tomson, J. (2024). Imaging of moho topography with conditional generative adversarial network from observed gravity anomalies. Journal of AsianEarth Sciences, 106093.
3. Roy, A., Prasad, M., Rao B, P., & Tomson, J. (2023). Estimation of moho depth beneath southern Indian shield by inverting gravity anomalies constrained by seismic data. Journal of Geophysical Research: SolidEarth, e2022JB025651.
4. >Roy, A.,& Wu, L. (2023). Generalized Gauss-FFT 3D forward gravity modeling for irregular topographic mass having any 3d variable density contrast. Computers & Geosciences, 172, 105297.
5. Sharma, R. K., Kumar, S., Padmalal, D., &Roy, A. (2023). Streamflow prediction using machine learning models in selected rivers of Southern India. International Journal of River Basin Management, 21(0), 1–27.
6. Roy, A., Kumar, T. S., & Sharma, R. K. (2022). Structure estimation of 2D listric faults using quadratic Bezier curve for depth varying density distributions. Earth and Space Science, 9(2), e2021EA002061.
7. Roy, A., Dubey, C. P., & Prasad, M. (2021a). Gravity inversion for heterogeneous sedimentary basin with b-spline polynomial approximation using differential evolution algorithm. Geophysics, 86(3), F35–F47.
8. Roy, A., Dubey, C. P., & Prasad, M. (2021b). Gravity inversion of basement relief using particle swarm optimization by automated parameter selection of Fourier coefficients. Computers & Geosciences, 156,104875.
9. >Roy, A.,& Kumar, T. S. (2021). Gravity inversion of 2D fault having variable density contrast using particle swarm optimization. Geophysical Prospecting, 69(6), 1358–1374.
10. >Chandrasekhar, N. P., &Roy, A. (2020). Imprints of sunspot cycles on normal and abnormal geomagnetic fields: Case study from equatorial and low-latitude sites of India. Journal of GeophysicalResearch: Space Physics, 125(12), e2020JA028464.

1. Dubey, C. P., &Roy, A. (2023). Joint inversion of gravity and gravity gradient and its application to mineral exploration. The Journal of Indian Geophysical Union, 27(1), 1–18.