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Dr. S. Tulasiram


Upper Atmospheric Studies Division




Room No: 206
Indian Institute of Geomagnetism
Plot No. 5, Sector 18, New Panvel
Navi Mumbai, Maharashtra – 410 218
Email: tulasi@iigs.iigm.res.in
Phone: +91-22-2748 4187
Fax : +91-22-2748 0762


Academic Record:

  • Ph. D. (Space Physics), Andhra University, Visakhapatnam (2008).
  • M.Sc (Electronics), Andhra University, Visakhapatnam (2003).


  • Best Thesis Award – Prof. P. Tiruvengana Rao Shastiabdipoorthi prize in physics, Andhra University, 78 and 79th Convocation, June 2011.
  • JSPS Fellow – Japan Society for Promotion of Science, Nov 2010 – Nov 2011.
  • Post-doctoral Fellow, Institute of Astronomy and Astrophysics, Acadamia Sinica, Taipei, Taiwan (May 2008 – Nov 2010).
  • Geo-Host Award – Indian Geophysical Union (IGU) – AOGS Annual Meeting 2010, Hyderbad, India, 5-9th July 2010.
  • URSI-Young Scientist Award – International Union of Radio Science (URSI) – General Assembly 2008, Chicago, USA, 9-16th August 2008.
  • Best Research Paper Award – NSSS-2008 (National Space Science Symposium-2008), Radio Astronomy Center (RAC), Ooty, India 26-29th February 2008.
  • Best Research Paper Award – INCURSI (Indian Committee on International Union of Radio Science) – 2007 symposium, National Physical Laboratory (NPL), New Delhi, India, 21-24th February 2007.

Research Interests:

  • Study of Space Weather and Ionospheric phenomena by remote sensing the ionosphere.
  • Solar Wind – Magnetosphere - Ionosphere-Thermosphere coupling processes.
  • Role of atmospheric gravity waves on equatorial electrodynamics leading to ESF
  • Large Scale Wave Structure (LSWS), neutral-ion coupling processes, Ionospheric irregularities and scintillations.
  • Modeling of the topside ionospheric distribution.

Selected Publications in Refereed Journals:

  • S. Tulasi Ram, M. Yamamoto, R. T. Tsunoda and S. V. Thampi, On the application of differential phase measurements to study the zonal large scale wave structure (LSWS) in the ionospheric electron content, Radio Science, Radio Science, 2011RS004870, 2011 (in press).
  • S. Tulasi Ram, S.-Y. Su, C.H. Liu, J. Lei and C.H. Lin, Dayside ionospheric response to recurrent geomagnetic activity during the extreme solar minimum of 2008, Geophysical Research Letters, 37, L02101, doi:10.1029/2009GL041038, 2010. [This paper is selected and featured in the Editor’s Choice column of AGU’s Space Weather (quarterly) journal].
  • S. Tulasi Ram, C. H. Liu, and S.-Y. Su, Periodic solar wind forcing due to recurrent Coronal holes during 1996-2009 and its impact on Earth’s geomagnetic and ionospheric properties during extreme solar minimum, Journal of Geophysical Research, 115, A12340, doi:10.1029/2010JA015800, 2010.
  • S. Tulasi Ram, S.-Y. Su, C.H. Liu, B.W. Reinisch and Lee-Anne McKinnell, Topside ionospheric effective scale heights (HT) derived from ROCSAT-1 and ground-based Ionosonde observations at equatorial and mid-latitude stations, Journal of Geophysical Research, 114, A10309, doi:10.1029/2009JA014485, 2009.
  • S. Tulasi Ram, P.V.S. Rama Rao, D.S.V.V. D. Prasad, K. Niranjan, S. Gopi Krishna, R. Sridharan and Sudha Ravindran, Local time dependant response of post-sunset ESF during geomagnetic storms, Journal of Geophysical Research, 113, A07310, doi:10.1029/2007JA012922, 2008.

Complete List of Publications:

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