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Dr Alladi Hemanth Kumar
Dr Alladi Hemanth Kumar Joined SRM Institute of Science and Technology (SRMIST) in September 2023. He completed his Ph.D from Sri Venkateswara University (SVU) in 2018 by working as a Research Fellow at the National Atmospheric Research Laboratory (NARL), Department of Space, Govt. of India, Gadanki. He worked as National Post Doctoral Fellow (NPDF) funded by Science and Engineering Research Board (SERB) at Space Physics Laboratory (SPL), Vikram Sarabhai Space Center (VSSC), Govt. of India, Trivandrum. Later he was successful in receiving INSPIRE Faculty fellowship, India’s most prestigious Early Career Research (ECR) award funded by the Department of Science and Technology (DST) and worked from May 2019 to August 2023 at NARL. Dr Hemanth also worked as a visiting scientist at Institute of Energy Climate (IEK-7), Forschungszentrum Jülich, Germany between May 2023 and August 2023
He is the principal investigator of two main projects namely “Investigations on the variability of the Tropical Tropopause Layer (TTL) and its characteristics associated with convectively generated waves over Indian region during wet and dry spells of the Indian Summer Monsoon (completed)” and “Investigations on the variability of UTLS characteristics associated with Indian summer monsoon dynamics (ongoing)” funded by SERB and DST respectively.
His research findings mainly include the role of Indian Summer Monsoon (ISM) deep convective clouds on the Tropical Tropopause Layer (TTL) characteristics and associated cross tropopause flux (aerosols and trace gases) using the upper air (GPS Radiosondes, ECC Ozonesondes, Cryogenic Frost Point Hygrometer-CFH), ground based (Indian MST Radar), satellite observations (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation – CALIPSO, Microwave Limb Sounder (MLS), Atmospheric Infrared Sounder (AIRS)) and re-analysis (NCEP/NCAR, ERA-5, MERRA-2). Dr Hemanth comprehensively validated India’s most advanced meteorological satellite (INSAT-3D/3DR) sounder observations using in-situ, re-analysis and other similar satellite observations. He investigated the variability of the Upper Troposphere and Lower Stratosphere (UTLS) aerosol concentration and chemical composition associated with the dynamics of the Asian Summer Monsoon and their impact on climate.
EXPERIENCE : 11 years of experience
RESEARCH INTEREST :
Atmospheric Aerosols and Trace gases (balloon borne and remote sensing-space borne and ground based), Deep convection and Monsoon Dynamics, Radar remote sensing, Tropical Tropopause Layer (TTL) processes, Stratosphere-Troposphere Exchange processes, Volcanic aerosols, Climate change
COURSES :
Middle Atmosphere (PAS21204T)
Land Atmosphere Interactions (PAS21D04T)
Education
publications
awards & Achievements
Workshops / Seminars / Conferences
Work Experience
memberships
Responsibilities Held
Education
| Degree | Institute/Organisation | Specialisation | Year Of Passing |
|---|---|---|---|
| Ph.D | National Atmospheric Research Laboratory (NARL)/Sri Venkateswara University (SVU) | Physics | 2018 |
| Integrated M.Sc | Sri Venkateswara University | Physics | 2011 |
publications
- Ghouse Basha, Venkat Ratnam, M., Hemanth Kumar A., Jonathon H Jiang, Ravindra Babu, S and Kishore,., 2023. Impact of Hunga Tonga-Hunga Ha’apai Volcanic Eruption on Stratospheric Water Vapour, Temperature, and Ozone. Remote Sensing, 15(14), 3602.
- Hemanth Kumar, A*., Venkat Ratnam, M., Venkata Subrahmanyam, K., Prasad, P., 2023. Role of deep convection on the spatial asymmetry in the UTLS aerosol distribution over Asian Summer Monsoon Anticyclone. Atmospheric Pollution Research, 14, 101764.
- Hemanth Kumar, A* and Venkat Ratnam, M., 2022. Trace gases distribution in the Upper Troposphere and Lower Stratosphere (UTLS) over different Asian Summer Monsoon Anticyclone (ASMA) regions obtained using satellite measurements . URSI Regional Conference on Radio Science (USRI-RCRS), Indore, India, 2022, pp. 1-6, doi: 10.23919/URSI-RCRS56822.2022.10118468.
- Satheesh Chandran, P. R., Sunilkumar, S. V., Muhsin, M. Hemanth Kumar. A., 2022. Effect of synoptic-scale dynamics on the vertical distribution of tropospheric ozone over the Arabian Sea and the Indian Ocean during the boreal winter of 2018. Journal of Geophysical Research: Atmospheres, 127, e2021JD036412.
- Jain, C.D, Venkat Ratnam, M., Madhavan, B.L., Sindhu, S., Hemanth Kumar, A., 2022. Impact of regional transport on total OX (NO2+ O3) concentrations observed at a tropical rural location. Atmospheric Pollution Research, 13,101408.
- Hemanth Kumar, A*., Venkat Ratnam, M., Jain, C.D., 2020. Influence of background dynamics on the vertical distribution of trace gases (CO/WV/O3) in the UTLS region during COVID-19 lockdown over India. Atmos. Res. 265, 105876.
- Kiran, V.R., Ratnam, M.V., Fujiwara, M., Russchenberg, H., Frank, G., Madhavan, B.L., Raman, M.R., Nandan, R., Thankamani, S., Hemanth Kumar, A., Ravindrababu, S., 2021. Balloon borne aerosol-cloud interaction studies (BACIS): New observational techniques to understand and quantify aerosol effects on clouds 1–53.
- Hemanth Kumar, A*., Venkat Ratnam., 2021. Variability in the UTLS chemical composition during different modes of the Asian Summer Monsoon Anti-cyclone. Atmos. Res. 260, 105700. https://doi.org/10.1016/j.atmosres.2021.105700.
- Hemanth Kumar, A., Sunilkumar, S. V., 2020. Assessment of INSAT-3D Retrieved Temperature and Water Vapour with Collocated Radiosonde Measurements over Indian Region. IEEE Trans. Geosci. Remote Sens. 58, 4000– 4005. https://doi.org/10.1109/TGRS.2019.2960277.
- Hemanth Kumar, A., Venkat Ratnam, M., 2019. Tropical Tropopause Layer Characteristics Observed at Different Scales Over the Complete Indian Region using INSAT-3D Sounder Measurements. Curr. Sci. 117, 1813.
- Vernier, J.P., Fairlie, T.D., Deshler, T., Venkat Ratnam, M., Gadhavi, H., Kumar, B.S., Natarajan, M., Pandit, A.K., Akhil Raj, S.T., Hemanth Kumar, A., Jayaraman, A., Singh, A.K., Rastogi, N., Sinha, P.R., Kumar, S., Tiwari, S., Wegner, T., Baker, N., Vignelles, D., Stenchikov, G., Shevchenko, I., Smith, J., Bedka, K., Kesarkar, A., Singh, V., Bhate, J., Ravikiran, V., Durga Rao, M., Ravindrababu, S., Patel, A., Vernier, H., Wienhold, F.G., Liu, H., Knepp, T.N., Thomason, L., Crawford, J., Ziemba, L., Moore, J., Crumeyrolle, S., Williamson, M., Berthet, G., Jégou, F., Renard, J.B., 2018. BATAL: The balloon measurement campaigns of the Asian tropopause aerosol layer. Bull. Am. Meteorol. Soc. 99, 955–973.
- Hemanth Kumar, A., Venkat Ratnam, M., Sunilkumar, S. V., Parameswaran, K., Krishna Murthy, B. V., 2018. Cross tropopause flux observed at sub-daily scales over the south Indian monsoon regions. Atmos. Res. 201, 72–85.
- Venkat Ratnam, M., Hemanth Kumar, A., Jayaraman, A., 2016. Validation of INSAT-3D sounder data with in situ measurements and other similar satellite observations over India. Atmos. Meas. Tech. 9, 5735–5745. https://doi.org/10.5194/amt-9-5735-2016.
- Hemanth Kumar, A., Venkat Ratnam, M., Sunilkumar, S. V., Parameswaran, K., Krishna Murthy, B. V., 2015. Role of deep convection on the tropical tropopause characteristics at sub-daily scales over the South India monsoon region. Atmos. Res. 161–162, 14–24.
- Venkat Ratnam, M., Sunilkumar, S. V, Parameswaran, K., Krishna Murthy, B. V, Ramkumar, G., Rajeev, K., Basha, G., RavindraBabu, S., Muhsin, M., Kumar Mishra, M., Hemanth Kumar, A., Akhil Raj, S.T., Pramitha, M., 2014. Tropical tropopause dynamics (TTD) campaigns over Indian region: An overview. J. Atmos. Solar-Terrestrial Phys. 121, 229–239.
awards & Achievements
- Received excellent grade in the DST performance review meeting, Mumbai, January 2023.
- Received Young Scientist Award (YSA), URSI-RCRS 2022 at Indian Institute of Technology (IIT), Indore in December 2022.
- Received travel grant from SPARC (Stratosphere Troposphere Process and their Role in Climate) to attend the 7th SPARC General Assembly October 2022 at NACR, Boulder, Colorado, USA.
- Best paper award at International conference on the Asian Summer Monsoon Anticyclone, organized by the Scheme for Promotion of Academic and Research Collaboration (SPARC), Govt of India and the SRM Institute of Science and Technology (SRM IST), 2020.
- Received Young Scientist Award from the Governor of Andhra Pradesh during AP Akademy of Sciences, Srikakulam, 2019
- Nominated for the Associateship in Indian Academy of Sciences, 2018.
- Received full grant from SPARC (Stratosphere Troposphere Process and their Role in Climate) and WCRP (World Climate Research Programme) for attending the 25th SPARC SSG Meeting 16-18, October 2017
- Received International Travel Grant from Science and Engineering Research Board for presenting the paper at the International School on “Detection, monitoring and modeling of Convective and Volcanic clouds” in Tarquinia, Italy during 24-29, October 2016.
Workshops / Seminars / Conferences
- Trace gases distribution in the Upper Troposphere and Lower Stratosphere (UTLS) over different Asian Summer Monsoon Anticyclone (ASMA) regions obtained using satellite measurements, URSI-RCRS at IIT Indore, December
- Spatial Asymmetry in the distribution of UTLS aerosols over Asian Summer Monsoon ” ISRS-ISG 2022 Symposium, Hyderabad, November 2022.
- An overview on the Vertical distribution of UTLS chemical composition over Asian Summer Monsoon Anticyclone. National Space Science Symposium (NSSS-2022) in Kolkata, during 31st January-4 February
- Variability in the UTLS chemical composition during different modes of the Asian Summer Monsoon Anti-cyclone. International Symposium of Tropical Meteorology (INTROMET-2021) November 2021.
- Influence of Asian Summer monsoon anticyclone bimodality on the chemical composition of the Upper Troposphere and Lower Stratosphere”. International ASMA conference, February 2020.
- Cross tropopause flux observed at sub-daily scales over the south Indian monsoon regions”. National Space Science Symposium (NSSS-2019), Pune, January
- Cross tropopause flux observed at sub-daily scales over the south Indian monsoon regions”. International conference ‘’ECR Symposium and SPARC Workshop” in Incheon, South Korea, October
- Role of deep convection on the tropical tropopause characteristics at sub-daily scales over the South India monsoon region”. International School on “Detection, monitoring and modeling of Convective and Volcanic clouds, Italy, October 2016.
- Validation of INSAT-3D Sounder data with in-situ measurements and other similar satellite observations over India. 19th National Space Symposium (NSSS-2016), Trivandrum, February
- Validation of INSAT-3D sounder data with TTD campaign radiosonde observations over Gadanki. Andhra Pradesh Akademi of Science Congress, January, 2016.
- Role of deep convection on the tropical tropopause characteristics at sub-daily scales over South India Monsoon region. Andhra Pradesh Akademi of Sciences (APAS) Golden Jubilee Science Congress, Hyderabad, November
- Role of deep convection on the tropical tropopause characteristics at sub-daily scales over South India Monsoon region. 18th National Space Science Symposium (NSSS- 2014) at Dibrugarh University, Dibrugarh January-February 2014.
Projects:
- Investigations on the variability of the Tropical Tropopause Layer (TTL) and its characteristics associated with convectively generated waves over Indian region during wet and dry spells of the Indian Summer Monsoon (2017-2019)-SERB
- Investigations on the variability of UTLS characteristics associated with Indian summer monsoon dynamics (2019-ongoing)-DST
Work Experience
Academic Experience:
- Assistant Professor (Research), SRM Institute of Science and Technology (formerly known as SRM University), Chennai (September 2023-Present).
- DST-INSPIRE Faculty, National Atmospheric Research Laboratory (NARL), Department of Space, Govt. of India, Gadanki (May 2019-August 2023).
- Visiting Scientist, Institute of Energy and Climate (IEK-7), Forschunszentrum Jülich, Julich, Germany.(May 2023-August 2023)
- SERB-National Post Doctoral Fellow (NPDF), Space Physics Laboratory (SPL), Vikram Sarabhai Space Center (VSSC), Govt. of India, Trivandrum. (September 2017-April 2019)
- Research Fellow, National Atmospheric Research Laboratory (NARL), Department of Space, Govt. of India, Gadanki. (November 2011-November 2016).
Other Professional Experience:
- Responsible for Conducting (pre-flight preparations and execution) and coordinating the Upper air observations using GPS radio radiosonde and ozonesondes at Gadanki during SPL-NARL joint Tropical Tropopause Dynamics (TTD) Campaigns between 2011 and 2014.
- Actively involved in the joint INSRO-NASA project for making accurate water vapor, chemical and aerosol measurements over Gadanki, Hyderabad and Varanasi during Balloon measurement campaigns of Asian Tropopause Aerosol Layer (BATAL)
- Actively Involved in the Space Physics Laboratory’s (SPL’s) Ship cruise campaign Integrated Campaign for Aerosols, Trace gases and Radiation Budget (ICARB) during Jan-Feb, 2018
- Participated in NARL’s Balloon borne aerosol-cloud interaction studies (BACIS) campaigns for making accurate chemical, aerosol and cloud particle measurements over Gadanki from May 2019 to August 2023.
memberships
- Life Member – Indian Meteorological Society
- Life Member – Indian Science Congress Association
- Life Member- Innovation, Science and Technology Foundation (ISTF)
Responsibilities Held
M.Sc Atmospheric Science (Course Files): In-charge
Reports In-charge (Publication)
Courses Handled
Middle Atmosphere (PAS21204T)
Land Atmosphere Interactions (PAS21D04T)
