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Department of Physics and Technology lvi024@post.uit.no Tromsø

Lakshmi Narayanan Viswanathan


Postdoctoral Research Fellow / Space Physics

Job description

I study the mesosphere - thermosphere - ionosphere (MTI) system. Present research focus is on the metal layers, ice clouds in the polar mesosphere and role of wave dynamics in altering the layered phenomena in upper mesosphere lower thermosphere region. Additionally, I work with traveling ionospheric and atmospheric disturbances propagating in the ionosphere and thermosphere. In the past, I have worked with mesospheric dynamics and ionospheric plasma instabilities in low and middle latitudes. 


  • Viswanathan, Lakshmi Narayanan; Häggström, Ingemar; Mann, Ingrid. Effects of particle precipitation on the polar mesospheric summer echoes observed by EISCAT VHF 224 MHz radar. Advances in Space Research 2022. ISSN 0273-1177.s doi: 10.1016/j.asr.2022.02.015.
  • Tveito, Torbjørn; Vierinen, Juha; Gustavsson, Björn Johan; Narayanan, Viswanathan Lakshmi. Planetary radar science case for EISCAT 3D. Annales Geophysicae 2021; Volum 39 (3). ISSN 0992-7689.s 427 - 438.s doi: 10.5194/angeo-39-427-2021.
  • Narayanan, Viswanathan Lakshmi; Nozawa, Satonori; Oyama, Shin-Ichiro; Mann, Ingrid; Shiokawa, Kazuo; Otsuka, Yuichi; Saito, Norihito; Wada, Satoshi; Kawahara, Takuya D.; Takahashi, Toru. Formation of an additional density peak in the bottom side of the sodium layer associated with the passage of multiple mesospheric frontal systems. Atmospheric Chemistry and Physics (ACP) 2021; Volum 21 (4). ISSN 1680-7316.s 2343 - 2361.s doi: 10.5194/acp-21-2343-2021.
  • Viswanathan, Lakshmi Narayanan; Nozawa, Satonori; Oyama, S; Mann, Ingrid; Shiokawa, Kazuo; Otsuka, Yuichi; Saito, Norihito; Wada, Satoshi; Kawahara, Takuya D.; Takahashi, Toru. Formation of a bottomside secondary sodium layer associated with the passage of multiple mesospheric frontal systems. Atmospheric Chemistry and Physics Discussions (ACPD) 2020. ISSN 1680-7367.s doi: 10.5194/acp-2020-803.
  • Hickey, Dustin A.; Sau, Sukanta; Viswanathan, Lakshmi Narayanan; Gurubaran, S.. A possible explanation of interhemispheric asymmetry of equatorial plasma Bubbles in airglow images. Journal of Geophysical Research (JGR): Space Physics 2020; Volum 125 (3). ISSN 2169-9380.s 1 - 11.s doi: 10.1029/2019JA027592.
  • Mann, Ingrid; Olsen, Sveinung viggo; Eilertsen, Yngve; Trollvik, Henriette; Pinneau, Adrien; Strmic Palinkas, Sabina; Gunnarsdóttir, Tinna Líf; Greaker, Herman Larsen; Fredriksen, Åshild; Spicher, Andres; Narayanan, Viswanathan Lakshmi. Plans for Mesospheric Dust Studies with MXD2. The 25th ESA Symposium on European Rocket and Balloon Programmes and Related Research 2022-05-01 - 2022-05-05 2022.
  • Viswanathan, Lakshmi Narayanan; Nozawa, Satonori; Mann, Ingrid; Oyama, Shin-Ichiro; Shiokawa, Kazuo; Otsuka, Yuichi; Saito, Norihito; Kawahara, Takuya D.; Tsuda, Takuo; Kawabata, Tetsuya. Investigation of sharp reductions in the bottomside sodium densities associated with the passage of dark mesospheric fronts observed in OH airglow. 15th Quadrennian Solar-Terrestrial Physics Symposium (STP-15) 2022-02-21 - 2022-02-25 2022.
  • Narayanan, Viswanathan Lakshmi; Mann, Ingrid. Current understanding of Mesospheric bores – characteristics, effects and observational challenges. Fysikermøtet 2021 2021-06-21 - 2021-06-24 2021.
  • Narayanan, Viswanathan Lakshmi; Mann, Ingrid; Häggström, Ingemar. Observations of spectra of polar mesospheric summer echoes at 224 MHz using EISCAT radar during particle precipitation events – Some case studies from July 2019. EGU General Assembly 2021 2021-04-19 - 2021-04-30 2021.
  • Viswanathan, Lakshmi Narayanan; Nozawa, Satonori; Mann, Ingrid; Oyama, Shin-Ichiro; Shiokawa, Kazuo; Otsuka, Yuichi; Saito, Norihito. Mesospheric fronts in airglow images and the variation of the bottomside sodium layer densities measured by a sodium lidar at Tromsø, Norway. EGU General Assembly 2020 2020-05-04 - 2020-05-08 2020.
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    Research interests

    Mesosphere - Thermosphere - Ionosphere processes


    Member of research group