amit

Dr. Amitava Guharay
Associate Professor
Space and Atmospheric Sciences Division

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

Research 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
Solar cycle effect on the middle atmosphere dynamical processes
Characteristics of long-period oscillation and influence on atmospheric waves

Observational 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

Reader 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 and 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

Mr. Gourav Mitra, Senior Research Fellow
Dr. Subarna Mondal, Postdoctoral Fellow

Select publications

1) 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

2) 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.

3) 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, doi: 10.1016/j.jastp.2015.05.010.

4) 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, 66:45.

 5)     Guharay, A.,  P. P. Batista, B. R. Clemesha, and N. J. Schuch (2013), Study of the quasi-two-day wave during summer over Santa Maria, Brazil using 
   meteor radar  observations. Journal of Atmospheric and Solar-Terrestrial Physics, 92, 83-93, doi:10.1016/j.jastp.2012.10.005.

6) Guharay, A., R. Sekar, M. Venkat Ratnam and P. P. Batista (2012), Characteristics of the intra-seasonal oscillations in the lower and middle
atmosphere over Gadanki, Journal of Atmospheric and Solar-Terrestrial Physics, 77, 167-173, doi:10.1016/j.jastp.2011.12.016.

7) 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, doi:10.1016/j.jastp.2011.04.013.

8) Guharay, A., M. Venkat Ratnam, D. Nath, and U. C. Dumka (2010), Investigation of saturated gravity waves in the tropical lower atmosphere
using radiosonde observations. Radio Science, 45, RS6008, doi:10.1029/2010RS004372.

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, doi: 10.1029/2009JD011963.

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

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