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Research Areas
  • Incoherent Scatter Radar techniques
  • coherent scatter radar techniques
  • Middle atmosphere
  • Ionosphere
  • Plasma Physics and Space Weather

Selvaraj Dharmalingam

Obtained PhD in 2017 from the National Atmospheric Research Laboratory, Gadanki and SRM University, Chennai in India under the guidance of Dr. A.K. Patra and Prof. D. Narayana Rao. I worked on Mesospheric turbulence using Indian Mesosphere–Stratosphere–Troposphere (MST) radar observations and rocket borne electron–density measurements, and used TIMED–SABER, MF radar, meteor radar and Rayleigh Lidar observations.

I have worked on ISR technique to retrieve D & E region electron densities from power profiles. I have done a one–year Post–doc research on the tropical Upper Troposphere and Lower Stratosphere (UTLS) dynamics especially analyzing the accuracy of balloon forecast trajectories and turbulence mixing at Laboratory for Meteorological Dynamics (LMD), Ecole Polytechnique, Palaiseau, France under the supervision of Prof. Riwal Plougonven, Prof. Albert Hortzog and Prof. Richard Wilson, LATMOS, Sorbonne University, France.

Those UTLS studies use tropical observations of long–duration balloons (Strateole–2 project), Indonasian Equatorial Atmospheric Radar (EAR), GPS Radio Sonde and Re–analysis data fields from ECMWRF–Interim. Within the Strateole–2 balloon project, I initiated International research collaboration ties between LMD, Ecole Polytechnique, France and tropical observatories: National Atmospheric Research Laboratory, Cochin University and SRM Institute of Science and Technology in India, and Jicamarca Radar Observatory in Peru. I have done a one–year post–doc research on simulating meteorological parameters using Weather Research and Forecasting (WRF) model in the Dept. of Civil, construction and Environmental Engineering at University of Central Florida, Orlando, Florida.

In UCF – Orlando, I have served as a Professional Development Coordinator in Professional Development Committee of Post–doctoral Association (UCF–PDA). I have acted as a reviewer for following funding program and journals.
1. UCF Seed Funding program–2019
2. Geophysical Research Letters – AGU
3. Remote Sensing – MDPI
4. Aerospace – MDPI
5. Atmosphere – MDPI
6. Journal of Atmospheric and Oceanic Technology – AMS
7. Atmospheric Chemistry and Physics

My research focuses on understanding the ionospheric structure and dynamics under the effect of geomagnetic storms and normal conditions. I study this mainly using the Incoherent scatter radar (ISR) technique.

2020: Research on ionospheric plasma physics as well as space weather using the Incoherent scatter radar (ISR) technique.

2019: Modeling of weather parameters using WRF model for the Air Quality modeling over US.

2018: Accuracy of super–pressure balloon trajectory forecasts in the lower Stratosphere over tropics for the Strateole – 2 project 2012

2017:
1. Bispectral analysis on low–latitude mesospheric electron density irregularities for the identification of non–linear interactions
2. On the governing dynamics of the VHF radar echoes from the mesosphere and collision dominated lower E region over Gadanki
3. On the seasonal variations of reflectivity and turbulence characteristics of low latitude mesospheric echoes over Gadanki
4. Scattering cross section of mesospheric echoes and turbulence parameters from Gadanki radar observations

2010 – 2012:
1. Low–latitude mesospheric turbulence investigated using coordinated MST radar and rocket–borne observations from India
2. On the beam broadening correction of the radar measured spectral width for turbulence studies

This staff does not have a mentorship history

2019

A. Articles in Peer Reviewed Journals 2019 Selvaraj Dhamalingham, Riwal Plougonven, Albert Hertzog, Aurélien Podglajen, Michael Rennie, Lars Isaksen and Sélim Kébi (2019), “Accuracy of balloon trajectory forecasts in the lower Stratosphere”, Accepted in Atmosphere, 10 (2), 102.
https://doi.org/10.3390/atmos10020102

2016

Selvaraj, D., Patra, A. K., Sathishkumar, S., Kishore Kumar, K., and Narayana Rao, D., 2016, “On the governing dynamics of the VHF radar echoes from the mesosphere and collision dominated lower E region over Gadanki (13.5oN, 79.2oE)”, Journal of Geophysical Research Space Physics, 121, pp. 1163–1177.
https://doi.org/10.1002/2016JA023297

Selvaraj, D., Patra, A. K., and Narayana Rao, D., 2016, “On the seasonal variations of reflectivity and turbulence characteristics of low latitude mesospheric echoes over Gadanki”, Journal of Geophysical Research Atmosphere, 121, pp. 6164–6177.
https://doi.org/10.1002/2015JD024283

2014

Selvaraj, D., Patra, A. K., Chandra, H., Sinha, H. S. S. and Das, U., 2014, “Scattering cross section of mesospheric echoes and turbulence parameters from Gadanki radar observations”, Journal of Atmospheric and Solar–Terrestrial Physics, 119, pp. 162–172.
https://doi.org/10.1016/j.jastp.2014.08.004

2012

Chandra, H., Sinha, H. S. S., Patra, A. K., Das, U., Selvaraj, D., Misra, R. N., and Datta, J., 2012, “Low–latitude mesospheric turbulence investigated using coordinated MST radar and rocket–borne observations from India”, Journal of Geophysical Research, 117, D22109.
https://doi.org/10.1029/2011JD016946