Education:

1. Bachelor’s Degree: Physics, Cotton College
2. Master’s Degree: Physics, IIT, Delhi 
3. M.Tech: Optical Electronics and Communication, IIT Delhi
4. Ph.D : Physics, Dibrugarh University
5. Other: Six Sigma green belt
   

Professional Experience:

1. Teaching and Research in the department of Physics Dibrugarh University since 2007
2. Member of sub-committee on ionosphere impact Aditya-L1 Space Weather monitoring and Predictions Plan (ASWMP) of ISRO.
3. Member of Panel on Solar Terrestrial Physics, IPSTRA programme, Institute for Advanced Research in Science (IARSc), Bangalore since 2021
4.  Co-ordinator of the NE region GNSS receiver chain (Aizwal, Kohima/Dimapur, Dibrugarh) since 2014
5. Adjunct Faculty, Centre for Atmospheric Studies, Dibrugarh University since 2014.
6. Software Consultancy and project management in Tata Consultancy Service (2002-2005) and Headstrong, India (2005-2007).
7. Teaching in Department of Electronics, Guwahati University as contractual lecturer in 1999-2000

Areas of Interest/Specialization:

• Space Physics, Instrumentation and Computation

Courses Takes:

 

1. Digital and Optical Electronics (M.Sc 3^rd Semester)
2. Space Physics (M.Sc 4^rth Semester)
3. Research Methodology-1 (Pre-PhD course work)

Research Gate Link:

Bitap Raj Kalita on ResearchGate

Research Projects (Completed):

 

1. Observational and modelling study of the Equatorial Ionization Anomaly (EIA) along 95ºE meridian (~30 Lakhs). Funding Agency: ISRO RESPOND (2019-2023)
2. Design and Development, of Digital Ionosonde RADAR with ionospheric data analysis software and collection and analysis of ionospheric data in North East region for ionospheric studies in collaboration with Society for Applied Microwave Electronics Engineering and Research(SAMEER), 128.73 lakhs (Dibrugarh University Share-19 Lakhs).MeitY,GOV (as Co-PI, 2012-2017)
3. Investigation of the structure and dynamics of the Equatorial Ionization Anomaly along 95°E through a network of GNSS receivers. Rs. 98 lakhs. DST SERB (as Co-PI, 2014-2017)

Ph. D. Scholars:

Sl.No	Name	Topic	Status
1	Miss. Prantika Nath	A Study of the Structure and the Dynamics of the Low Latitude Ionosphere with special reference to the India-East Asia sector	Ongoing
2	Mr.Anirban Singha	A study on GNSS based integrated water vapour measurement in North East India	Ongoing
3	Mr.Mayur Chaoudhury	A study of ionospheric spatial gradients in low latitudes	Ongoing
4	Tapon Buragohain	Study of low latitude ionospheric variations around 90-95E longitude (Co-Supervisor )	Ongoing/Mizoram University

 

Administrative Assignments:

1. Co-ordinator, Departmental Placement Cell

Consultancy:

1. Solar Terrestrial Physics, IPSTRA programme, Institute for Advanced Research in Science (IARSc), Bangalore since 2021
2. Enterprise Application server/software for TCS, India, US and Denmark (2002-2005)
3. Public Wealth Management (PWM) division of Morgan Stanley for Headstrong , India (2005-2007)

Research Publications:

1. ­­The differential conjugate hemisphere ionospheric response during solstice storms and the winter side maxima, Bitap Raj Kalita,P.K.Bhuyan, M.C.Choudhury, D.Chakrabarty, R.C. Tiwari ,M.Le Huy, K.Wang, K.Hazumi, P.SupnithiT.Komolmis, S.J.Nath, Advances in Space Research, Nov, 2023. https://doi.org/10.1016/j.asr.2023.11.025
2. Conjugate hemispheric response of Earth’s ionosphere due to 2019 Antarctic minor Sudden Stratospheric Warming (SSW): Comparison with 2013 Arctic major SSW, Jinee Gogoi, Kalyan Bhuyan, Bitap Raj Kalita, Rajesh Vaishnav, Advances in Space Research, Dec, 2023. https://doi.org/10.1016/j.asr.2023.12.031

3. Performance evaluation of IRI, IRI Plas and SAMI2 during the consecutive prolonged solar minimum of cycles 23 and 24 around 100°E, Angkita Hazarika, Kalyan Bhuyan, Bitap R. Kalita, Pradip K. Bhuyan, Arup Borgohain, Ramesh C. Tiwari, Adv.Spa. Res.,2023,ISSN 0273-1177,https://doi.org/10.1016/j.asr.2023.04.048.
4. A comprehensive investigation of Sudden Stratospheric Warming (SSW) events and upper atmospheric signatures associated with them, Jinee Gogoi, Kalyan Bhuyan, Som Kumar Sharma, Bitap Raj Kalita, Rajesh Vaishnav, Advances in Space Research, Volume 71, Issue 8,2023,Pages 3357-3372,ISSN 0273-1177, https://doi.org/10.1016/j.asr.2022.12.003.
5. The investigation on daytime conjugate hemispheric asymmetry along 100°E longitude using observations and model simulations: New insights, B.R.Kalita,P.K.Bhuyan,S.J.Nath, M.C.Choudhury, D.Chakrabarty, K.Wang, K.Hazumi, P.SupnithiT.KomolmisC.Y.Yatini, M.Le Huy, Advances in Space Research, 69(10), May 2022, https://doi.org/10.1016/j.asr.2022.02.058 
6. Longitudinal and Inter-hemispheric Ionospheric Response to 2009 and 2013 SSW Events in the African‐European and Indian‐East Asian Sectors, G.Kakoti, B.R.Kalita, P.K.Bhuyan, S. Baruah and K. Wang, Journal of Geophysical Research: Space Physics, 125(11), Nov, 2020 e2020JA028570,Doi: 10.1029/2020JA028570 
7. SAMEERDU‐digital ionosonde: Brief system description and initial results from a low latitude location Dibrugarh, Kalita, B. R., Nath, S. J., Bhuyan, P. K., Khandare, A., & Kulkarni, A., Radio Science, 54. (2019), https://doi.org/ 10.1029/2019RS006813

8. The longitudinal and hemispherical variation of the IRI’s foF2 estimates at ±40º dip angle around 95ºE and 130ºE sector under fluctuating solar flux conditions. R Kalita, P.K.Bhuyan, P.Nath, A. Hazarika, and K. Wang, Adv.Spa. Res., 63(6),March, 2019, p-1914-1925.https://doi.org/10.1016/j.asr.2018.12.011 
9. Spatial features of L‒ band equinoctial scintillations from equator to low mid latitude at around 95ᴼ E during 2015‒16, Barsha Dutta, Bitap Raj Kalita, P. K. Bhuyan, S.Sarmah, R.C. Tiwari, K. Wang, K. Hozumi, T. Tsugawa, T. Yokoyama, M. Le. Huy and T. T. H. Pham^, Journal of Geophysical Research, 123 (9),https://doi.org/10.1029/2018JA025533 
10. Temporal evolution of the EIA along 95°E as obtained from GNSS TEC measurements and SAMI3 model, Geetashree Kakoti; Bitap Raj Kalita*, Rumajyoti Hazarika; Pradip K Bhuyan; Sanjay Sharma; Ramesh Tiwari, Advances in Space Research, 61(11), June-2018,p-2837-2853,https://doi.org/10.1016/j.asr.2018.03.008,

11. L-band nighttime scintillations at the northern edge of the EIA along 95°E during the ascending half of the solar cycle 24,BarshaDutta,Bitap Raj Kalita. Pradip Kumar Bhuyan, Advances in Space Research, 61(7), April, 2018,p-1744-1760,https://doi.org/10.1016/j.asr.2017.07.027 
12. Conjugate hemisphere ionospheric response to the St. Patrick's Day storms of 2013 and 2015 in the 100ºE longitude sector, Bitap Raj Kalita, Rumajyoti Hazarika, Geetashree Kakoti, P. K. Bhuyan, D. Chakrabarty, G. K. Seemala, K., S. Sharma_, T. Yokoyama, P. Supnithi, T. Komolmis, C. Y. Yatini^­ , M. L. Huyand P. Roy, Journal of Geophysical Research, 121(11),p-11364-11390, DOI: 10.1002/2016JA023119. 
13. Variations of the ionospheric parameters and vertical electron density distribution at the northern edge of the EIA from 2010 to 2015 along 95°E and comparison with the IRI-2012, Bitap Raj Kalita, Pradip Kumar Bhuyan, Advances in Space Research, 60(2),July 2016, ISSN 0273-1177, http://dx.doi.org/10.1016/j.asr.2016.06.041.

14. NmF2 and hmF2 measurements at 95° E and 127° E around the EIA northern crest during 2010–2014, Bitap Raj Kalita, Pradip Kumar Bhuyan and Akimasa Yoshikawa, Earth, Planets and Space, 2015, 67:186 doi:10.1186/s40623-015- 0355-3 
15. Ionospheric response to X-class solar flares in the ascending half of the subdued solar cycle 24,Rumajyoti Hazarika, Bitap Raj Kalita, Pradip Kumar Bhuyan, J. Earth SystSci (2016) 125: 1235. doi:10.1007/s12040-016-0726-6.

Books and Book Chapters:

1. Analysis Of The QoS Of Offset Time Based Burst Switching Protocol LAP Lambert Academic Publishing, ISBN-13:978-613-9-464647 ISBN-10:6139464641 https://www.lap-publishing.com/
2. Chapter on Space Weather and Climate Change drivers/NE India perspective: Monitoring vertical distribution of electron density over Dibrugarh, ISBN: 978-81-939507-5-3

International/National Invited talk

1. The hemispheric and longitudinal variation of the EIA dynamics: 16th International Symposium on Equatorial Aeronomy, (ISEA-16) Sep 12 – Sep 19, 2022, Kyoto, Japan.
2. The variation of the EIA effects along 100°E during quiet and disturbed times, Lead talk on 20^th National Space Science Symposium. 2019,Pune, Savitribai Phule University, Pune

International Conference publications

1. The daytime conjugate hemispheric asymmetry along 100°E : new insights, Bitap Raj Kalita, P.K Bhuyan, Mayur Choudhary , D.Chakrabarty, K. Wang, K. Hozumi, T. Komolmis, C. Y. Yatini, M. L. Huy, 15^th Solar terrestrial Physics Symposium, 2022
2. Asymmetric response of the low latitude ionosphere over East South Asia  to 2015 solstice storms, Bitap Raj Kalita, P.K Bhuyan, Mayur Choudhary , D.Chakrabarty, K. Wang, K. Hozumi, T. Komolmis, C. Y. Yatini, M. L. HuyF irst Indian Space Weather Conference 2022
3. Preliminary results of SAMEER-Dibrugarh University Digital Ionosonde at Dibrugarh, R.Kalita, Sankar Nath, P.K.Bhuyan, Ajay Khandare, Anil Kulkarni 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC),Electronic ISBN:978-908-25987-5-9
4. Data analysis software for SAMEER-DU Ionospheric Radar, R.Kalita, Sankar Nath, P.K.Bhuyan, Ajay Khandare, Anil Kulkarni 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC),Electronic ISBN:978-908-25987-5-9
5. Occurrence characteristics and causative mechanisms of daytime L-band scintillations over Dibrugarh, a station at the northern edge of EIA during 2010 – 2014,Barsha Dutta ; Bitap Raj Kalita; Pradip Kumar Bhuyan, 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC),Electronic ISBN: 978-908-25987-5-9,DOI: 23919/URSIAP-RASC.2019.8738571
6. A Modelling study of equatorial and low latitude ionosphere around 95^oE during the deep solar minimum 2009-2010 using SAMI2 model, Angkita Hazarika, Pradip Kumar Bhuyan, Bitap Raj Kalita,2019 URSI Asia-Pacific Radio Science Conference (AP-RASC),Electronic ISBN: 978-908-25987-5-9,Doi: 10.23919/URSIAP-RASC.2019.8738655
7. The seasonal and hemispheric asymmetry of the EIA in the 100ºE meridian, Bitap Raj Kalita, A. Hazarika, P.Nath, G.Kakoti, P. K. Bhuyan² Hozumi T. Tsugawa, T. Yokoyama , M. Le. Huy, 15^th International Symposium on Equatorial Aeronomy (ISEA-15), Oct 2018 at PRL, Ahmedabad, India
8. Seasonally invariant midlatitude type Es: supporting evidence of the wind shear theory? R.Kalita, P.K.Bhuyan and _,K.Wang, 15^th International Symposium on Equatorial Aeronomy(ISEA-15) Oct 2018  at PRL, Ahmedabad, India
9. Statistical Investigation of sporadic and Spread F over Dibrugarh, R Kalita and P.K.Bhuyan, 3^rd RC of International Union of Radio Science, 2017, NARL, Tirupari, 2017
10. Ionospheric perturbations during two recent solar eclipses observed from TEC measurements using GPS. P.K.Bhuyan, K.Bhuyan, R Kalita, Asia Oceania Geosciences Society (AOGS) conference, Hyderabad, 2010

1. Digital and Optical Electronics (M.Sc 3^rd Semester)
2. Space Physics (M.Sc 4^rth Semester)
3. Research Methodology-1 (Pre-PhD course work)

Research Projects (Completed):

1. Observational and modelling study of the Equatorial Ionization Anomaly (EIA) along 95ºE meridian (~30 Lakhs). Funding Agency: ISRO RESPOND (2019-2023)
2. Design and Development, of Digital Ionosonde RADAR with ionospheric data analysis software and collection and analysis of ionospheric data in North East region for ionospheric studies in collaboration with Society for Applied Microwave Electronics Engineering and Research(SAMEER), 128.73 lakhs (Dibrugarh University Share-19 Lakhs).MeitY,GOV (as Co-PI, 2012-2017)
3. Investigation of the structure and dynamics of the Equatorial Ionization Anomaly along 95°E through a network of GNSS receivers. Rs. 98 lakhs. DST SERB (as Co-PI, 2014-2017)