Cyprus Ionospheric Research Group

Dr. Krishnendu Sekhar Paul has completed his doctoral degree from the Institute of Radio Physics and Electronics, University of Calcutta, Kolkata, India in 2020. He has a theoretical and practical understanding of the ionospheric effects over GNSS applicability during different solar-terrestrial conditions. In his doctoral work, he has investigated the Ionospheric irregularity dynamics over low to mid-latitude ionosphere through multi-instrumental analysis of GNSS derived total electron content (TEC), carrier to noise ratio (CNO), positioning and ranging profiles, ionosonde profiles and magnetometer data over multiple stations. In his thesis, different activities of irregularity movements over low and mid-latitude nighttime ionosphere have been studied in detail. A specific nighttime ionospheric irregularity movement has been highlighted in his study i.e., post-midnight north to south irregularity movements from mid-latitude towards off equatorial locations. He evaluated that the nighttime north-south irregularity movement over the transition region between low to mid-latitude ionosphere is mainly controlled by travelling ionospheric disturbances (TIDs) and other equatorial ionospheric mechanisms. He has also postdoctoral experience of eighteen months (Jan 2020 to July 2021) at the National Atmospheric Research Laboratory, Department of Space, Gadanki, India where he worked on the investigation of the different wave activities that affect ionospheric electron content and its thickness after the sunset period over a low latitude region ionospheric region of India using ionosonde and atmospheric RADAR profiles. His work demonstrates how the vertical wave (Gravity wave) activity affects the F region of the nighttime ionosphere and causes different instability mechanisms at the bottom side ionosphere to produce irregularity patterns. Moreover, he has published 11 articles in reputed journals like the Journal of Geophysical Research-Space Physics, Journal of Atmospheric and Solar-terrestrial Physics, Advances in Space Research, Radio Science etc. along with a couple of articles that are under review and preparation. He has also developed his interpersonal and demonstration skills by attending reputed internal conferences/symposiums. He has developed technical skills and by actively participating in various public technical demonstrations and academic teaching practices, GPS/DGPS based research and development projects, reference station and network deployment, processing and analysis of the GPS data. He has also exposure to Regional Navigation Satellite System (IRNSS) based studies and applications.