Sandip Bhattacharyya

• Investigation on quiet time day-to-day ionospheric variability using ground and space based observations.
• Role of the wave forcing from below in modulating ionospheric dynamics.
• Effects of electrodynamics and neutral dynamics processes on ionospheric parameters.

My Ph.D. research focuses on investigating the day-to-day ionospheric variability over low- and mid-latitude regions during geomagnetic quiet conditions using both ground and satellite based observations. The study aims to understand the role of various drivers, such as equatorial electric fields, neutral winds, and wave forcing from below, in shaping ionospheric behavior. The goal is to improve our current understanding of ionosphere-thermosphere coupling processes and physical mechanisms responsible for complex ionospheric variability over low and mid latitudes.

• Qualified Joint Entrance Screening Test, JEST-2022 (National level).
• Qualified Graduate Aptitude Test in Engineering, GATE-2022 (National level)).
• INSPIRE Scholarship (2018–2022), awarded by the Department of Science and Technology, Government of India, for standing in the top 1% in the Board Examination.
• Awarded two silver medals and three awards for achieving 2nd position at the district level in Class 12 (2017).
• Awarded a silver medal and five awards for securing 1st position in the Class 10 (2015).

Bhattacharyya, S; K Venkatesh; D. Pallamraju; and D. Chakrabarty., Quiet time enhancements and decrements in the day-to-day TEC variations over the Indian equatorial and low latitudes., Journal of Geophysical Research, 2025 (Under review).

Domestic

• 22nd National Space Science Symposium 2024 (NSSS-2024), Goa University, India. Sandip Bhattacharyya, Duggirala Pallamraju, Pradip Suryawanshi, and K. Venkatesh. Estimation of Earth’s Magnetic Field Through Digisonde Measurements Over Ahmedabad.
• 3rd Indian Space Weather Conference (ISWC-3) 2024, IIT Roorkee, India. Sandip Bhattacharyya, K. Venkatesh, D. Pallamraju, and D. Chakrabarty. Enhancements and depletions in day-to-day TEC variations over the Indian low latitudes.
• 4th Indian Space Weather Conference (ISWC-4) 2026, PRL, India. Sandip Bhattacharyya, K. Venkatesh, D. Pallamraju, and D. Chakrabarty. Role of planetary wave forcing on the day-to-day variability of TEC over the equatorial and low latitudes

International

• Workshop on the Use of GNSS Data for Ionospheric Monitoring and Modelling, Rome, Italy
• International Beacon Satellite Symposium 2025, Rome, Italy. Sandip Bhattacharyya, K. Venkatesh, D. Pallamraju, and D. Chakrabarty. Quiet time enhancements and decrements in the day-to-day TEC variations over the Indian equatorial and low latitudes