amit

Dr. Amitava Guharay
Associate Professor
Space and Atmospheric Sciences Division
Physical Research Laboratory

Email: [email protected]
Telephone: +9179 2631 4775

Highlights

Wave dynamical coupling processes of various atmospheric regions
Nonlinear wave-wave interactions among gravity waves, tides and planetary waves
Wave-driven large scale disturbances and associated latitudinal and longitudinal coupling
Long-period oscillation and impact on atmospheric waves

Research activities

Meteor radar investigation of the mesopause region dynamics
Airglow observations of the mesosphere and thermosphere
Satellite-based observations to probe various atmospheric regions

Experiences

Associate Professor July-2020 to present Physical Research Laboratory, Ahmedabad, India

Assistant Professor May-2015 to June-2020 Physical Research Laboratory, Ahmedabad, India

Postdoctoral Fellow September-2011 to April-2015 National Institute for Space Research, Sao Paulo, Brazil

Postdoctoral Fellow April-2010 to August-2011 Physical Research Laboratory, Ahmedabad, India

Academic qualifications

PhD Atmospheric Physics 2004-2010 Aryabhatta Research Institute of Observational Sciences, Nainital, India

MSc Physics 2002-2004 Jawaharlal Nehru University, New Delhi, India

BSc Physics (Hons), Chemistry & Mathematics 1999-2002 University of Calcutta, Kolkata, India

Fellowship / postdoc

Ramanujan Fellowship by Department of Science and Technology, Govt. of India (2015), not availed

Postdoctoral Fellowship by Sao Paulo Research Foundation, Sao Paulo, Brazil (2011-2014)

Postdoctoral Fellowship by Physical Research Laboratory, Ahmedabad, India (2010-2011)

Group members

Present
Ms. Ankita Chaurasia, Senior Research Fellow

Past

Dr. Gourav Mitra, currently Postdoctoral Fellow at Leibniz Institute of Atmospheric Physics, Kuhlungsborn, Gemany

Dr. Subarna Mondal, currently Postdoctoral Fellow at Indian Institute of Geomagnetism, Mumbai, India

Member

Scientific Discipline Representative, Scientific Committee on Solar-Terrestrial Physics (SCOSTEP), USA
Life Member, Indian Meteorological Society, New Delhi, India
Executive Member, Indian Meteorological Society Ahmedabad Chapter, India
Life Member, Ocean Society of India, Kochi, India
Life Member, Indian Radio Science Society, New Delhi, India

Editor
Senior editorial board member, Scientific Reports (Nature portfolio journal) on Climate Change

Select publications

1)    Mitra, G., A. Guharay, P. P. Batista, R. A. Buriti, T. Renkwitz, J. F. Conte (2025), Imprint of a quasi-16-day period in boreal summer through modulation of quasi-2-day wave implying interhemispheric coupling, Scientific Reports,
              https://doi.org/10.1038/s41598-025-09350-y

      2)    Mitra, G., Guharay, A., Conte, J. F., Chau, J. L. (2023), Signature of two-step non-linear interactions associated to zonally symmetric waves during major sudden stratospheric warmings. Geophysical Research Letters, 50, e2023GL104756,
             https://doi.org/10.1029/2023GL104756

      3)    Mitra, G., A. Guharay, P. P. Batista, R. A. Buriti, (2022), Impact of Sepetember 2019 minor sudden stratospheric warming on the low-latitude middle atmospheric planetary wave dynamics, Journal of Geophysical Research Atmospheres,
              https://doi/10.1029/2021JD035538

4) Guharay, A., P. P. Batista, R. A. Buriti, N. J. Schuch, (2018), On the variability of the quarter-diurnal tide in the MLT over Brazilian low-latitude stations. Earth, Planets and Space, 70, doi: https://doi.org/10.1186/s40623-018-0910-9.

5) Guharay, A., P. P. Batista, B. R. Clemesha (2015), Variability of the quasi-2-day wave and interaction with longer period planetary waves in the MLT at Cachoeira Paulista (22.7S, 45W). Journal of Atmospheric and Solar Terrestrial Physics, 130-131, 57-67,
https://doi.org/10.1016/j.jastp.2015.05.010

       6)        Guharay, A., P. P. Batista, and B. R. Clemesha (2014), On the variability of the seasonal scale oscillations over Cachoeira Paulista (22.7^oS, 45^oW), Brazil. Earth Planets and Space, https://doi.org/10.1186/1880-5981-66-45

      7)     Guharay, A., P. P. Batista, B. R. Clemesha and S. Sarkhel (2014), Response of the extratropical middle atmosphere to the September 2002 major stratospheric sudden warming, Advances in Space Research, 53 (2), 257-264,
               https://doi.org/10.1016/j.asr.2013.11.002

8) Guharay, A., and R. Sekar (2011), Seasonal characteristics of gravity waves in the middle atmosphere over Gadanki using Rayleigh lidar observations. Journal of Atmospheric and Solar-Terrestrial Physics, 73, 1762-1770,
https://doi.org/10.1016/j.jastp.2011.04.013

9) Guharay, A., D. Nath, P. Pant, B. Pande, J. M. Russell III, and K. Pandey (2009), Middle atmospheric thermal structure obtained from Rayleigh lidar and TIMED/SABER observations: A comparative study. Journal of Geophysical Research, Atmospheres,
114, D18105, https://doi.org/10.1029/2009JD011963

10) Guharay, A., A. Taori, M. Taylor (2008), Summer-time nocturnal wave characteristics in mesospheric OH and O2 airglow emissions, Earth Planets and Space, 60, 973–979, https://doi.org/10.1186/BF03352853

Profile
Google Scholar: https://scholar.google.co.in/citations?user=lzGPa4QAAAAJ&hl=en
Researchgate: http://www.researchgate.net/profile/Amitava_Guharay

ORCID : https://orcid.org/0000-0003-1395-7322
Loop : https://loop.frontiersin.org/people/2185477/overview