Council for Scientific and Industrial Research (CSIR) Fellowship (2002). Qualified National Educational Test (NET)-Eligibility for Lectureship, conducted by University Grant Commission (UGC/CSIR). (2002).
Prof. R. Ananthakrishnan Endowment Prize for Topper in MSc Meteorology.
Best participant award in SERC School on Aviation Meteorology at Air Force Administrative College (AFAC), Coimbatore.
SARCC Scientistmedal for the research work on the Assimilation of IMD Doppler Radar Wind observations in a Mesoscale model for the short range prediction of Convective storms.
Academic Positions held
Junior Research Fellow(CSIR) in the Department of Atmospheric Sciences at Cochin University of Science and Technology, India. (September 2002-september 2004)
Senior Research Fellow (CSIR) in the Department of Atmospheric Sciences at Cochin University of Science and Technology, India.-(September 2004 - September 2007)
Research Associate in a CSIR funded Research Project entitled Development of Slab Ocean Model in VARSHA GCM (T80) for Monsoon Related Predictions. Jointly sponsored by National Aerospace Laboratories (CSIR) and Cochin University of Science and Technology (CUSAT) (October 2007 – April 2008-Short assignment for running the model)
Operational Experience- (Real-Time Forecasting )
Worked as a Senior Research Scientist (Meteorology-forecaster) for Flagstone Reinsurance Bermuda Pvt Ltd.
Additional courses and training programs
Successfully completed the Scientific and Engineering Research Council (SERC) School on Numerical Weather Prediction-Parameterization of Physical processesat Indian Institute of Technology (IIT), Delhi. (April 2002)
Successfully completed the Scientific and Engineering Research Council (SERC) School on “Aviation Meteorology” at Air force Administrative College (AFAC), Coimbatore. (Jan 2003). Achieve best participant award for overall performance.
Training Course on “Wind Profiler / RASS” at Indian Institute of Tropical Meteorology (IITM), Pune. (Feb 2005).
Participated in the workshop and Training course on “Data Assimilation” at Indian Institute of Sciences (IISC), Bangalore (Jan 2006).
Short technical training on Linux clusters (1024 processors) involving MPI/OpenMP, API and Unix Shell Scripting at Flagstone High Performance Computing (HPC) facility in Halifax, Canada. Parallelization and optimization of WRF modeling system components such as WRF preprocessor (WPSV3.0), main model core (WRF ARW/NMM V3.0) and WRF post processor (WPPV3.0). Automization of the modeling system for real-time prediction.
Comprehensive training Program on “Atmospheric Science” at Indian Institute of Tropical Meterlogy.
Phase 1: August 2009- December 2009 (Successfully completed)
Phase 2: January 2010-June 2010 (Successfully completed)
Participated in the training program on AIX configuration and application on IBM P6 systems during 20-30 September 2010 at IBM, Bangalore.
Participation in International Conferences
Participated and presented research papers in SPARC 3rd General Assembly, held during 1-7 August 2004 at Victoria (BC), Canada.
Paper presented in International Conference on Mesoscale Processes in Atmosphere and Ocean (IMPA) at Indian Institute of Technology (IIT), Delhi, during 10-14 February, 2006.
Paper presented at International CPEA Symposium, Kyoto University, Japan held during 20-23 March 2007.
Participated in the 4th Kyoto University International summer school on Active Geosphere at Institute of Bandung, Indonesia during 22nd July to 4th August 2007.
Participation in field campaigns
Participated in convection campaign at National MST Radar Facility (NMRF), Gadanki, India and Cyclone Detection Radar station (India Meteorological Department) at Chennai (2002-2004). During the campaign, we organized simultaneous observations of clouds and storms using MST (VHF) radar, Lower atmospheric wind profilers (UHF) and Doppler Weather Radar (S-Band), GPS Sondes.
Developmental activities for meteorological applications
Developed observational preprocessors for Radar data assimilation in 3DVAR system of MM5 and WRF.
Development of UNIX SHELL and visualization scripts for real-time applications. Automization scripting of cyclone tracking directly from the WRF (both ARW and NMM core) output and also from multi-model track forecasting.
Actively involved in developing UNIX/Perl scripts for Automization of Model pre-processing, Running and Post processing steps. Developed various 2D/3D visualization scripts for Hurricane related applications.
Development of bogus vortex in WRF modeling system for cyclone intensity and track prediction.
Development of NWP based early warning tool over Europe for predicting European windstorm event (Extra Tropical Cyclone).
Generated wind footprints from high-resolution NWP models for real time Re-Insurance Industry. Validation and comparison of the NWP products with H*WIND analysis for Hurricane CAT bonds and LiveCAT applications.
Development of a Dynamical System for the Extended Range Prediction of Active/Break spells. An Ensemble prediction system (EPS) has been developed in the Climate Forecast System (CFS) and experimental extended range forecasts has been generated for operational activities of India Meteorological Department (IMD).
Papers published in peer-reviewed Journals:
28. D. K. Pandey, Shailendra Rai, A. K. Sahai, Abhilash. S, and N. K. Shahi (2016), Prediction and error growth in the daily forecast of precipitation from the NCEP CFSv2 over the subdivisions of Indian subcontinent,Journal of Earth System Science, Published Online, PP1-17. DOI:10.1007/s12040-015-0647-9.
27. Susmitha Joseph, A. K. Sahai, R. Chattopadhyay, S. Sharmila, S. Abhilash, M. Rajeevan, R. Mandal, A. Dey, N. Borah and R. Phani (2016), Extremes in June rainfall during Indian summer monsoons of 2013 and 2014: Observational Analysis and Extended range prediction, Quarterly Journal of the Royal Meteorological Society, Published Online, DOI: 10.1002/qj.2730.
26. Abhilash S.,Sahai A.K., Borah N., Joseph S., Chattopadhyay R., Sharmila S., Rajeevan M., Mapes B.E., Kumar A. (2015), Better spread-error relationship in a multimodel ensemble prediction system, Bulletin of the American Meteorological Society, 96, August 2015, 1228-1229.
25. A. K. Sahai, R. Chattopadhyay, S. Joseph, R. Mandal, A. Dey, S. Abhilash,R. P. M. Krishna and N. Borah (2015), Real-time performance of a multi-model ensemble-based extended range forecast system in predicting the 2014 monsoon season based on NCEP-CFSv2, Current Science, Vol. 109, No. 10, p1802-1813.
24. Abhilash S, A. K. Sahai, N. Borah, S. Joseph, R. Chattopadhyay, S. Sharmila, M. Rajeevan, B.E Mapes, and A. Kumar (2015), Improved Spread-Error Relationship and Probabilistic Prediction from CFS based Grand Ensemble Prediction System, Journal of Applied Meteorology and Climatology (In Press), (doi: 10.1175/JAMC-D-14-0200.1)
23. Susmitha Joseph, A. K. Sahai, S. Abhilash, R. Chattopadhyay, N. Borah, B. Mapes, M. Rajeevan and A. Kumar (2015), Development and evaluation of an objective criterion for predicting Indian summer monsoon onset in a coupled model framework, Journal of Climate (In Press)
22. Abhilash S., Sahai A.K., Borah N., Chattopadhyay R., Joseph S., Sharmila S., De S., Goswami B.N., Arun Kumar (2014), Prediction and monitoring of monsoon intraseasonal oscillations over Indian monsoon region in an ensemble prediction system using CFSv2, Climate Dynamics, 42, 2801-2815, DOI:10.1007/s00382-013-2045-9
21. Sahai A.K., Abhilash S., Chattopadhyay R., Borah N., Joseph S., Sharmila S, Rajeevan M (2014), High-resolution operational monsoon forecasts: an objective assessment, Climate Dynamics, DOI:10.1007/s00382-014-2210-9, 1-12
20. Sharmila S., Joseph S., Sahai A.K., Abhilash S., Chattopadhyay R. (2014), Future projection of Indian summer monsoon variability under climate change scenario: An assessment from CMIP5 climate models, Global and Planetary Change, DOI:10.1016/j.gloplacha.2014.11.004, 1-17
19. Taraphdar S., Mukhopadhyay P., Leung L. R., Zhang F., Abhilash S., Goswami B. N. (2014) Role of moist processes in the intrinsic predictability of Indian Ocean cyclones, Journal of Geophysical Research, DOI:10.1002/2013JD021265, 1-17
18. Joseph S., Sahai A.K., Sharmila S., Abhilash S., Borah N., Chattopadhyay R., Pillai P.A., Rajeevan M., Arun Kumar (2014), North Indian heavy rainfall event during June 2013: diagnostics and extended range prediction, Climate Dynamics, DOI:10.1007/s00382-014-2291-5, 1-17
17. Borah N., Sahai A. K., Abhilash S., Chattopadhyay R. , Joseph S., Sharmila S., Kumar A. (2014), Assessment of real-time extended range forecast of 2013 Indian summer monsoon,International Journal of Climatology, DOI:10.1002/joc.4178, 1-17
16. Abhilash S., A. K. Sahai, N. Borah, R. Chattopadhyay, S. Joseph, S. Sharmila, S. De and B. N. Goswami (2013), Does bias correction in the forecasted SST improve the extended range prediction skill of active-break spells of Indian summer monsoon rainfall?, Atmospheric Science Letters, DOI: 10.1002/asl2.477
15. Sahai A. K., Chattopadhyay R., Joseph S., Abhilash S., Borah N., Goswami B.N. (2013), A new method to compute the principal component time series of self-organizing maps: an application to monsoon intraseasonal oscillations, International Journal of Climatology, DOI: 10.1002/joc.3885
14. Borah N., Sahai A.K., Chattopadhyay R., Joseph S., Abhilash S., Goswami B.N. (2013), Self-organizing map-based ensemble forecast system for extended range prediction of active break cycles of Indian summer monsoon,Journal of GeophysicalResearch, 118, DOI:10.1002/jgrd.50688
13. Sharmila S., P. Pillai, S. Joseph, M. Roxy, R.P.M. Krishna, R. Chattopadhyay, Abhilash S., A.K. Sahai and B.N. Goswami (2013), Simulation of Indian summer monsoon intraseasonal oscillation(MISO) and its northward propagation in the coupled and uncoupled NCEP-Climate Forecast System(CFSv2) model,Climate Dynamics, 41, DOI: 10.1007/s00382-013-1854-1,1651–1669
12. A.K. Sahai, S. Sharmila, Abhilash S, R. Chattopadhyay, N. Borah, R.P.M. Krishna, S. Joseph, M. Roxy, S. De, S. Pattnaik and P. Pillai (2013), Simulation and extended range prediction of monsoon intraseasonal l oscillations in NCEPCFS/GFS version 2 framework,Current Sciences, Vol. 104,No.10.
11. Abhilash. S., A.K. Sahai., S. Pattnaik., and S. De. (2013), Predictability during Active Break Phases of Indian Summer Monsoon in an Ensemble Prediction System using Climate Forecast System,Journal of Atmospheric and Solar Terrestrial Physics, DOI: 10.1016/j.jastp.2013.03.017.
10. Abhilash. S., A.K. Sahai., S. Pattnaik, B.N. Goswami, and Arun Kumar (2013), Extended Range Prediction of Active-Break Spells of Indian Summer Monsoon Rainfall using an Ensemble Prediction System in NCEP Climate Forecast System, International Journal of Climatology,DOI:10.1002/joc.3668.
9. Pattnaik. S, Abhilash S., S. De, A.K. Sahai, R. Phani, and B.N. Goswami, (2013), Influence of convective parameterization on the system at ic errors of Climate Forecast System(CFS) model over Indian monsoon region from an extended range forecast perspective, Climate Dynamics, DOI:10.1007/s00382-013-1662-7,1-25
8. Abhilash S., A.K. Sahai, K. Mohan kumar, John. P. George, and Someshwar Das (2012), Assimilation of Doppler Weather Radar Radial Velocity and Reflectivity Observations in WRF-3DVAR System for Short-Range Forecasting of Convective Storms, Pure and Applied Geophysics, DOI: 10.1007/s00024-012-0462-z
7. Abhilash S., K. Mohankumar, K. Kishore Kumar, and S.S. Das (2010), Vertical Structure of Tropical Mesoscale Convective Systems: Observations using VHF radar and Cloud Resolving Model Simulation, Meteorl. Atmos. Phys., Vol. 109,73-90.
6. Abhilash S. and K. Mohankumar (2009), Vertical Structure and Evolution of a Super cell Storm: Observations Using VHF Radar,International Journal of Remote Sensing, 30(6),1441-1454
5. Abhilash S, K. Mohankumar, G. Mrudula, Someshwar Das, V.K. Anandan and D. Narayana Rao (2009), Prediction of Intensity and Track of Tropical Cyclone over Bay of Bengal by assimilating the Wind observations from Conventional and Remote sensing data, Vatavaran, Vol. 3,78-89.
4. Abhilash S., K. Mohankumar and Someshwar Das, (2008), Microphysical Structure associated with Tropical Cloud Clusters simulated using a mesoscale model and comparison with TRMM observations, International Journal of Remote Sensing, Vol. 29,2411-2432
3. Abhilash S., Someshwar Das, S.R. Kalsi, Munmun Dasgupta, K. Mohankumar, John P. George, S.K. Banarjee, S.B. Thampi and D. Pradhan (2007), Assimilation of Doppler Radar Wind Observations for the Prediction of Rainfall Associated with Mesoscale Convective Systems, Journal of Earth System Science,Vol.116(3),275-304.
2. Abhilash S., Someshwar Das, S.R.Kalsi, Munmun Dasgupta, K. Mohankumar, John P. George, S.K. Banarjee, S.B. Thampi and D. Pradhan (2007), Impact of Doppler radar Wind Observationsin simulating the Intensity and Propagation of Rainbands Associated with Mesoscale Convective Complexes using MM5-3DVAR System, Pure and Applied Geophysics, Vol.164,1491-1509.
1. Someshwar Das, S. Abhilash and Munmun Das Gupta (2006), Simulation of Nor'westers using Doppler weather radar wind observations in a mesoscale model, Proc. SPIE 6404, Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions, 64040L doi:10.1117/12.694006; http://dx.doi.org/10.1117/12.694006
3. S. Abhilash and K. Mohankumar, Tropical Mesoscale Convective Systems: observational and Modeling Studies. Published and distributed by VDM Verlag, 2009, [ISBN: 3639201671, EAN: 9783639201673]
2. S. Abhilash, Someshwar Das., S. R. Kalsi.,Munmun Dasgupta., K. Mohankumar., John P. George., S. K. Banarjee., S. B. Thampi and D. Pradhan, Chapter B. Mesoscale Variability and Modelling : Impact of Doppler Radar Wind Observations in simulating the Intensity and Propagation of Rainbands Associated with Mesoscale Convective Complexes using MM5-3DVAR System.
Atmospheric and Oceanic Mesoscale Processes, Edited by Maithili Sharan and Sethu Raman, Published by Birkhäuser, 2007, ISBN 3764384921, 9783764384920, 430 pages
1. Das Someshwar., Kalsi, S.R., Abhilash, S., Das Gupta, M., George, J.P., Banerjee, S.K., Thampi, S.B., Pradhan, D., and Mohankumar, K, Assimilation of Doppler Weather Radar Wind in a Mesoscale Model and their Impact on Simulation of Thunderstorms and Severe Weather Systems.
Report no. NMRF/RR/01/2006, 120 pages, Published by NCMRWF, A-50, Institutional Area, Sector-62, NOIDA, India 201 307 (Selected for the SAARC AWARD)
5. S. Abhilash , K. Mohankumar, S.S. Das, V.K. Anandan and D.N. Rao, Gravity Waves Associated with a Supercell Storm Part I: Observations, Proceedings of MST 11, National Atmospheric Research Laboratories, 2008, p. 464-468.
4. S. Abhilash , K. Mohankumar, K. Kishore Kumar, V.K. Anandan and D.N. Rao, Gravity Waves Associated with a Supercell Storm. Part II: Assimilation of VHF Radar Data and Cloud Resolving Scale Simulations, Proceedings of MST 11, National Atmospheric Research Laboratories,Vol.1, 2008, p.643-646.
3. S. Abhilash., K. Mohankumar., Someshwar Das., and John P. George., Assimilation of Doppler radar and Satellite Observations for the Predication of Intense Rainfall Associated with Mesoscale Convective Cloud Clusters. Proceedings of METOC 2007, Indian Navy, Vol.1, 2007, p. 239-247
2. Someshwar Das, Abhilash. S and Munmun Das Gupta, Simulation of Nor'westers using Doppler Weather Radar wind observations in a mesoscale model. Proceedings of SPIE, The International Society for Optical Engineering, 2006, Vol. 6404, pp. 64040L.1-64040L.11
1. S. Abhilash and K. Mohankumar , Prominent features of the Gravity Waves generated by Tropical Convection detected by VHF Doppler Radar: A case study. Proceedings of 14th International Conference on Clouds and Precipitation. Bologna, Italy, 18-23 July 2004
Paper presented in conferences/seminars/symposia:
9. S. Abhilash., and A. K. Sahai. A Mesoscale Data Assimilation System for Short Range Forecasting of Convective Storms (Presented at the METOC symposium during 1-2 December 2010 at Naval Base Cochin.)
8. Phani Murali Krishna, S. Pattnaik, Abhilash S and Sahai A.K. Sensitivity of Convective Parameterization on Indian Summer Monsoon precipitation in CFS coupled Model.
(Presented at the International conference on Mosoon variability at Indian Institute of Sciences, Bangalore during 17-19 August 2011)
7. S. Abhilash , K. Mohankumar, S.S. Das, V.K. Anandan and D.N. Rao, Gravity Waves Associated with a Supercell Storm Part I: Observations. (Paper presented in MST 11, National Atmospheric Research Laboratories, Feb. 2008).
6. S. Abhilash., and K. Mohankumar. Assimilation of the VHF radar data in Simulating the Structure of the observed Gravity Wave Event Associated with Tropical Convection (Presented at International CPEA Symposium, Kyoto University, Japan held during 20-23 March 2007)
5. S. Abhilash and K. Mohankumar. Observational and modeling studies on Tropical Mesoscale convective systems. (Presented at 4th Kyoto University International summer school on Active Geosphere at Institute of Bandung, Indonesia during 22nd July to 4th August 2007)
4. S. Abhilash., Someshwar Das., Munmun Dasgupta., John P. George., S. R. Kalsi., S. K. Banarjee and K. Mohankumar. Impact of Doppler Weather Radar wind observations for the Prediction of the Organization and Structure of Mesoscale Convective Systems. (Presented in International Conference on Mesoscale Processes in Atmosphere and Ocean at Indian Institute of Technology (IIT), Delhi, during 10-14 February, 2006.)
3. S. Abhilash., K. Mohankumar., G. Mrudula., Someshwar Das., V. K. Anandan and D. Narayana Rao. Assimilation of MST Radar wind observations for the Prediction of the Track and Intensity of Tropical Cyclone over Bay of Bengal.(Presented at National Atmospheric Research Laboratories during Sixth User’s Scientist workshop on MST Radar applications, Tirupati, India June 2006.
2. S. Abhilash and K. Mohankumar. Assimilation of Satellite Derived parameters for the Short Range Prediction of Mesoscale Convective Systems and Validation of Microphysical Schemes in Mesoscale Models. (Presented in the First National Workshop on Megha-Tropiques, IISc, Bangalore, July 2006)
1. S. Abhilash., K. Mohankumar., and G. Mrudula. VHF Radar observations on prominent features of Gravity waves and Weakening of Tropopause associated with Tropical Convection, (Paper presented in SPARC 3rd general assembly, held during 1-7 August 2004 at Victoria (BC), Canada.)