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  • 11:07 PM, Monday, 20 Sep 2021

Department of Earth and Space Sciences
     
Chandrasekar A., Ph.D.
Outstanding Professor
 
Office
Tel:+91-471-2568502
Fax:+91-471-2568462
Email:chandra@iist.ac.in













Education
  • Ph.D. from IISc, Bangalore.
  • M.Sc. from Department of Marine Sciences, Cochin University.
  • B.Sc. from University of Madras.

Course Offered
  • Introduction to Earth, Atmosphere and Ocean Sciences (ES322) [shared with Dr VJ Rajesh]
  • Numerical Weather Prediction (ESE661 and ESE461)
  • Physical and Dynamical Meteorology (ESE611 and ESE411)
  • Physical and Dynamical Oceanography (ESE612 and ESE412)

Area of Interest
  • Numerical modeling of the atmosphere, data assimilation, mesoscale modeling, regional climate modeling.
Past Affliation
  • Head, Center for Oceans, Rivers, Atmosphere and Land Sciences, IIT Kharagpur (July 2008 – June 2009).
  • Professor in Department of Physics & Meteorology. IIT-Kharagpur (Aug 2004 – 2009).
  • Associate Professor in Department of Physics & Meteorology, IIT-Kharagpur (May 1999 – Aug 2004).
  • Assistant Professor in Department of Physics & Meteorology, IIT-Kharagpur (Jan 1996 – May 1999).
  • Lecturer in Department. of Physics & Meteorology, IIT-Kharagpur (July 1988 – Dec 1995).
  • SRF and JRF, IISc, Bangalore (1984 – 1987).
Member of Professional Bodies
  • Member: The National Academy of Sciences, India.
  • Life Member: India Meteorological Society.
  • Life Member: Indian Society for Theoretical and Applied Mechanics.
Member, Editorial Board
  • Disaster Advances Journal.
  • Open Journal of Marine Science
Member, Editorial Advisory Committee : The Open Atmospheric Science Journal
Ph.D. Guidance
  • Dr A Sarkar (1997) Effects of an urban heat island and its growth on the local  weather and air quality over Indian region .
  • Dr S. Mazumdar (1999) A Study of the various Initialization Schemes as applied to a Limited-Area Shallow Water Model over a Tropical Region.
  • Dr V.F. Xavier (2008) The effect of assimilation of satellite and conventional meteorological data on the prediction of tropical meteorological system over India using a mesoscale model·          .
  • Dr S. Sandeep (2009) Mesoscale Modeling of recent Tropical Cyclones that formed over India: Effects of Synthetic Vortex Initialization.
  • Dr Vinodkumar (2009) Effects of Surface Data Assimilation in modeling various Monsoonal Mesoscale Disturbances over India.
  • Dr M. Govindan Kutty (2010) The Impact of Three-Dimensional Variational Satellite Data Assimilation in simulating various Monsoonal Disturbances over India using the WRF Model.
  • Dr P.K. Sinha (2013) Studies on Three-dimensional Variational Data Assimilation of wind observations in simulating meteorological systems over the Indian region
  • Dr Dhanya (2016) Improved simulation of meteorological systems over India: Impact of assimilating satellite observations using 3DVar and EnKF.
  • Dr Deepak Gopalakrishnan (2019) Regional 4DVar Assimilation Studies on Weather Systems Over India Using the WRF Model.
  • Mr Debojit Sarkar (ongoing since January 2018 jointly with Dr Amit Kesarkar of NARL, DoS) Microphysics schemes with non-equilibrium thermodynamics.
  • Mr Vibin Jose (ongoing since July 2018) Land surface processes.
  • Ms Kavita Patnaik ( ongoing since January 2019 jointly with Dr Amit Kesarkar of NARL, DoS) Impact of Aerosols in Extreme Precipitation Events using Cloud Resolving Models.
  • Ms Sonali Maurya (ongoing since September 2020, jointly with Dr K.V. Sambhu Namboodiri of VSSC, ISRO) Atmospheric Boundary layer Studies.
  • Mr Shrikar Kalyanam (ongoing since February 2021) Atmospheric Modeling Studies.
Recent Publications:
  1. Vibin Jose and A Chandrasekar, 2021, "Assessment of EnKF data assimilation of satellite derived soil moisture over the Indian domain with the Noah Land Surface Model" has been accepted for publication in Theoretical and Applied Climatology journal.
  2. Goriparthi Pavani and A. Chandrasekar, 2021, "Impact of enhanced forest conditions on the regional weather over Central India using NU-WRF" has been accepted for publication in Theoretical and Applied Climatology journal.
  3. Vibin Jose and A Chandrasekar, 2021, "Impacts of different rainfall forcings on soil moisture distribution over India: Assessment using the Land Information System" accepted for publication in Pure and Applied Geophysics (PAAG).
  4. Deepak Gopalakrishnan and A Chandrasekar, 2018, "Improved 4DVar Simulation of Indian Ocean Tropical Cyclones using a Regional Model", IEEE Transactions of Geosciences and Remote Sensing (TGRS) 56, 9, 5107 – 5114.
  5. Deepak Gopalakrishnan and A Chandrasekar, 2018, "On the Improved Predictive Skill of WRF Model with Regional 4DVar Initialization: A Study with North Indian Ocean Tropical Cyclones", IEEE Transactions on Geoscience and Remote Sensing (TGRS),56, 6, 3350 – 3357.
  6. M. Dhanya, A.Chandrasekar. 2018, Mutivariate background error covariances in the assimilation of SAPHIR radiances in the simulation of three tropical cyclones over the Bay of Bengal using the WRF model, International Journal of Remote Sensing, 39, 1, 191-209.
  7. M. Dhanya and A Chandrasekar, 2016, Impact of variational assimilation using multivariate background error covariances on the simulation of monsoon depressions over India, Annales Geophysicae, 34, 187–201.
  8. M. Dhanya, Deepak Gopalakrishnan, A.Chandrasekar, Sanjeev Kumar Singh, V.S.Prasad, 2016, Impact of assimilating MeghaTropiques SAPHIR radiances in the simulation of tropical cyclones over Bay of Bengal using WRF model, International Journal of Remote Sensing, 37, 13, 3086-3103.
  9. M. Dhanya and A Chandrasekar, 2014, Improved Rainfall Simulation by Assimilating Oceansat-2 Surface Winds Using Ensemble Kalman Filter for a Heavy Rainfall Event over South India”, IEEE Transactions on Geoscience and Remote Sensing (TGRS), 52,12, 7721-7726.
  10. Impact of Assimilation of ATOVS Temperature and Humidity and SSM/I Total Precipitable Water on the Simulation of a Monsoon Depression, M. Govindan Kutty andA. Chandrasekar, Natural Hazards, DOI: 10.1007/s11069-011-9857-x (2011)
  11. Effect of 3DVAR Assimilation of MODIS Temperature and Humidity Profiles on the Dynamic and Thermodynamic Features of Three Monsoon Depressions over the Bay of Bengal, M. Govindankutty, andA.Chandrasekar, Meteorological and Atmospheric Physics, 107, 65-79 (2010)
  12. Improvement of Mesoscale Forecasts of Monsoon Depressions through Assimilation of QuikSCAT Wind data: Two Case studies over India, P.K. Sinha andA.Chandrasekar, The Open Atmospheric Science Journal, 4, 160-177 (2010).
  13. Impact of 3DVAR assimilation of Doppler Weather Radar wind data observation for the prediction of a tropical cyclone, M. Govindankutty,A. Chandrasekar, and Devendra PradhanInternational Journal of Remote Sensing (accepted for publication), (2010).
  14. Assessment of data assimilation approaches for the simulation of a monsoon depression over the Indian monsoon region, Vinodkumar,A.Chandrasekar, Dev Niyogi and K. Alapaty(in Boundary Layer Meteorology), 133, 343-366 (2009).
  15. Impact of Land Surface Representation and Surface Data Assimilation on the Simulation of an Off-Shore Trough over the Arabian Sea, Vinodkumar,A. Chandrasekar,Dev Niyogi and K. AlapatyGlobal and Planetary Change,67, 104-116, (2009)
  16. The impact of assimilation of satellite derived wind observations for the prediction of a monsoon depression over India using a mesoscale model, V.F.Xavier,A. Chandrasekarand Devendra SinghInternational Journal of Remote Sensing,29, no. 24, 7225 – 7250 (2008)
  17. The effect of satellite and conventional meteorological data assimilation on the mesoscale modeling of monsoon depressions over India, V.F. Xavier,A.Chandrasekar, Hasibur Rahman, Dev Niyogi and K. AlapatyMeteorological and Atmospheric Physics(DOI: 10.1007/s00703-008-0314-7),(2008)
  18. Development of the Flux-Adjusting Surface Data Assimilation System for mesoscale models, K. Alapaty, Dev Niyogi, F. Chen. P. Pyle,A. Chandrasekarand N. SeamanJournal of Applied Meteorology and Climatology,47, 9, 2331-2350. (2008)
  19. Combined IR- Microwave satellite retrieval of temperature and moisture profiles using the ICI inversion system and its application in the MM5 model, Devendra Singh, S. Sandeep andA. Chandrasekar,Atmosfera, 21, 191-212. (2008)
  20. The impacts of indirect soil moisture assimilation and direct surface temperature and humidity assimilation on a mesoscale model simulation of a Indian monsoon depression, Vinodkumar,A.Chandrasekar, K. Alapaty and Dev Niyogi,Journal of Applied Meteorology and Climatology, 47, 1393-1412. (2008)
  21. The impact of assimilation of MODIS observations using WRF-VAR for the prediction of a monsoon depression during September 2006, M. Govindankutty,A. Chandrasekar,AK Bohra, JP George and M. Dasgupta,The Open Atmospheric Science Journal,2, 68-78. (2008)
Publication of Books:
  • Chandrasekar, A.and M. Govindankutty, 2013. “Studies on the impacts of 3DVAR assimilation of satellite observations on the simulation of monsoon depressions over India“, Springer;ISBN 978-3-642-35087-0 ( pp 643-705) in “Data Assimilation for Atmospheric, Oceanic and Hydrologic Applications (Vol. II)” eds. by Seon Ki Park and Liang Xu
  • A book titled“Basics of Atmospheric Science” (2010)byA. Chandrasekar(446 pages and costing Rs 375) has been published byPHI Learning Private Limited, New Delhi.
  • Click here to view the Cover Page , Foreword and Contents of the book.
Projects:
  1. ‘Impact of assimilating high temporal resolution data from INSAT-3D in high-resolution mesoscale model for prediction of severe weather systems over Bay of Bengal and neighbouring land region,’- Funded bySAC, ISRO
  2. ‘Assimilation of Oceansat-2 scatterometer in mesoscale model’- Funded bySAC, ISRO
  3. Impact of assimilating SAPHIR and GPS-ROS data from MEGHA TROPIQUES in high resolution mesoscale model for prediction of severe weather systems over IndiaFunded byIIST