1. Name : Prof. Sanjay Sharma
2. Date of Birth : 11-10-1964
3. Designation : Principal
4. Address : Dimapur Government College
Dimapur, Nagaland, 797112
Mob No. 9436010366/ 6009397237
E mail : sanjay_saharma11@hotmail.com
5. Educational qualification : M.Sc. (Physics), Ph.D. (Radio & Atmospheric Physics) Gauhati University, Guwahati, Assam.
6. Title of the Ph. D. Thesis : Study of fading and scintillation of microwave signals with respect to tropospheric irregularities.
7. Area of research : Atmospheric Physics & Remote Sensing of the Atmosphere
1. Research Projects:
| S.No. | Funding Organisation | Nature of project | Duration of project | Amount of grant (Rupees) |
| 1. | Ministry of Education (ME) Govt. Of India | An investigation of high resolution spatio –temporal variation of morphological, microphysical and rainfall properties of precipitating systems and its social impact: An integrated multi sensor and multi institutional approach | 2016-2023 | 227.34 Lakh |
| 2 | Indian Space Research Organization (ISRO) Dept of Space Govt. of India | Study of Clouds and Rain Characteristics with SARAL/ALTIKA sensors in synergy with Megha –Tropiques sensors and Doppler Weather Radar | 2011-15 | 12.0 Lakh |
| 3. | ISRO, Dept of Space Govt. of India | Study of the microphysics of rain and Quantitative Precipitation Estimation over N.E. region of India | 2011-14 | 9.0 Lakh |
| 4. | ISRO, Dept of Space Govt. of India | Study of mesoscale convective systems by the passive microwave sensors of Megha-Tropiques mission in association with the Doppler radars and fast response rain gauges | 2007-12 | 23.80 Lakh |
| 5. | ISRO, Dept of Space Govt. of India | Study of evolution of tropical precipitating systems with the help of Doppler Weather Radar (DWR) and fast response rain gauges and its implication in rain forecasting | 2005-08 | 11.34 Lakh |
| 6. | ISRO, Dept of Space Govt. of India | Study of tropical precipitating systems with the help of onboard and ground based radar systems over Indian subcontinent | 2004-07 | 6.74 Lakh |
| 7. | ISRO, Dept of Space Govt. of India | Estimation of Rain Parameters from Doppler Radars. | 2001-04 | 5.94 Lakh |
2. Publication:
| S. No | Year | Title | Name of Journal | Refereed journal or not |
| 1. | 2023 | A study of rain drop size distributions and associated rain microphysical processes over a subtropical station in the Northeast India | Journal of Atmospheric and Solar Terrestrial Physics, Vol 247 https://doi.org/10.1016/j.jastp.2023.106073 | Refereed (Clarivate IF-5.369) |
| 2. | 2023 | Space–time variation of large hail-producing mesoscale convective systems over a complex terrain of the Indian subcontinent as revealed by the integrated Tropical Rainfall Measuring Mission and Global Precipitation Measurement observations | International Journal of Climatology Vol 43, 3023-3039 https://doi.org/10.1002/joc.8015 | Refereed (Clarivate IF-3.9) |
| 3. | 2021 | Regional variation of electrical and lightning properties of thunderclouds during the pre-monsoon season over the north-eastern and eastern part of India | Atmospheric Research Volume 260 doi.org/10.1016/j. atmosres.2021.105683 | Refereed (Clarivate IF-5.369) |
| 4. | 2020 | Spatial and seasonal variation of the rainfall contribution of the height spectrum of precipitation systems and associated cloud bulk properties over the South Asia | International Journal of Climatology Vol 40,8 3771-3791 DOI:10.1002/joc.6427 | Refereed (Clarivate IF-3.9) |
| 5. | 2018 | Simulation of daily rainfall from concurrent meteorological parameters over core monsoon region of India. | Advance in Meteorology Volume 2018 |Article ID 3053640 | doi.org/10.1155/2018/3053640 | Refereed (Clarivate IF-1.491) |
| 6. | 2018 | Multi-hazard weather risk perception and preparation in eight countries | Weather, Climate and Society Volume 10, 501–520 Doi: 10.1175/WCAS-D-16-0064.1 | Refereed (Clarivate IF-2.90) |
| 7. | 2018 | Temporal Evolution of the EIA along 95o E as obtained from GNSS TEC measurements and SAMI3 model | Advances in Space Research, Vol 6, 2837-2853 Doi.org/10.1016/j.asr.2018.03.008 | Refereed (Clarivate IF-2.152) |
| 8. | 2018 | Spatial features of L-band equinoctial scintillations from equator to low midlatitude at around 95°E during 2015–2016 | Journal of Geophysical Research: Space Physics Vol 123, 7767–7788. https://doi.org/10.1029/ 2018JA025533. | Refereed (Clarivate IF-2.80) |
| 9. | 2017 | A study of the spatio-temporal variability of the properties of intense precipitation features over the South Asian region: An integrated multi sensor approach | International Journal of Climatology Vol 37, 624-639 https://doi.org/10.1002/joc.5027 | Refereed (Clarivate IF-3.9) |
| 10. | 2016 | A study of raindrop size distribution during stratiform rain and development of its parametrization scheme in the framework of multiparameter observations. | Meteorological Application Volume 23, 254-268 DOI:10.1002/met1551 | Refereed (Clarivate IF-2.119) |
| 11. | 2016 | Conjugate hemispheric ionospheric response to the St. Patrick’s Day storms of 2013 and 2015 in the 1000 E longitude sector. | Journal of Geophysical. Research. (Space Physics), Vol 121, 11,364-11,390 DOI: 10.1002/2016/ 6JA023119 | Refereed (Clarivate IF-2.80) |
| 12. | 2016 | Spatio-temporal variability of the properties of mesoscale convective systems over a complex terrain as observed by the TRMM sensors. | International Journal of Climatology Vol 36, 2615-2632 DOI10.1002/. 4516 | Refereed (Clarivate IF-3.9) |
| 13. | 2015 | Detection of rain/cloud pixels by Ka-band Altika Altimeter over the tropical region: development of a rain/ cloud flag algorithm and its validation. | Marine Geodesy, ( Vol 38, 86-106, DOI:10.1080/01490419.2015.1008158 2015 | Refereed (Clarivate IF-1.66) |
| 14. | 2014 | A multi sensor analysis of the life cycle of bow echoes over Indian region. | International Journal of Atmospheric Sciences, Vol 2014, Article ID 207064 DOI:10.1155/2014/207064. | Refereed |
| 15. | 2012 | Development of a regional rain retrieval algorithm for exclusive mesoscale convective systems over peninsular India | Advance in Space Research Vol 49, 1750-1762, https://doi.org/10.1016/j.asr.2012.02.028 | Refereed (Clarivate IF-2.152) |
| 16. | 2012 | Sensitivity of Z-R relations and spatial variability of error a Doppler weather radar measured rain intensity | Indian Journal of Radio and Space Physics, Vol. 41, 448-460 | Refereed Indexed in Scopus |
| 17. | 2011 | An artificial neural network based approach for estimation of rain intensity from spectral moments of a Doppler Weather Radar | Advance in Space Research, Vol. 47, 1949-1957, https://doi.org/10.1016/j.asr.2011.02.002 | Refereed (Clarivate IF-2.152) |
| 18. | 2010 | Nowcasting of Yes/No rain situation at a station using soft computing technique to the radar imagery. | Ind. Journal of Radio and Space Physics, Vol.39, 92-102. | Refereed Indexed in Scopus |
| 19. | 2009 | Characteristics of rain integral rain parameters during tropical convective, transition and stratiform rain at Gadanki and its application in rain retrieval | Journal of Applied Meteorology and Climatology, Vol 48, 1245-1266. https://doi.org/10.1175/2008JAMC1948.1 | Refereed (Clarivate IF-2.923) |
| 20. | 2008 | Estimation of rain parameters from spectral moments of L-band wind profiler using multilayer Perceptron network model. | Indian Journal of Radio and Space Physics, Vol. 37, 341-352 | Refereed Indexed in Scopus |
| 21. | 2008 | An artificial Neural Network –Based Integrated regional model for rain retrieval over land and ocean. | IEEE Transaction on Geoscience and Remote Sensing, Vol. 46, 1689-1696. DOI: 10.1109/TGRS.2008.916469 | Refereed (Clarivate IF-5.60) |
| 22. | 2008 | Retrieval of rain drop size distribution from the combined use of VHF and L-band wind profiler during convective and stratiform type of rain, | Indian Journal of Radio and Space Physics Vol. 37, 185-196. | Refereed Indexed in Scopus |
| 23. | 2006 | Shape of the rain drop size distribution and classification of rain type at Gadanki | Indian Journal of Radio and Space Physics, Vol 35, 360 -367. | Refereed Indexed in Scopus |
| 24. | 2006 | Characteristic of brightness temperature with respect to rain rate over ocean and land and its implication on rain rate retrieval | Indian Journal of Radio and Space Physics, Vol 35, 259-269. | Refereed Indexed in Scopus |
| 25. | 2005 | A soft computing approach for rainfall retrieval from TRMM microwave imager | IEEE Transaction on Geoscience and Remote Sensing, Vol. 12, 2879-2885. DOI: 10.1109/TGRS.2005.857910 | Refereed (Clarivate IF-5.60) |
| 26. | 1998 | An empirical model to estimate radio refractive Index gradient from ground based data sources. | Indian Journal of Radio and Space Physics, Vol 27, 11-14, | Refereed Indexed in Scopus |
| 27. | 1997 | High resolution fast response rain gauge | Indian Journal of Radio and Space Physics, Vol 26, 301-305. | Refereed Indexed in Scopus |
| 28. | 1996 | Dynamics of lower atmosphere through microwave fades | Indian Journal of Radio and Space Physics, Vol. 25, 187-196. | Refereed Indexed in Scopus |
| 29. | 1995 | Characterization of LOS signal fading at 6/7 GHz over Assam Valley and its association with tropospheric parameters: An observational study. | Indian Journal of Radio and Space Physics, Vol 24, 166-177. | Refereed Indexed in Scopus |
| 30. | 1995 | Model for estimating rain attenuation at frequencies ranges 6-30 GHz. | Electronics Letters, Vol. 17, 1505- 1506. DOI: 10.1049/el:19951035 | Refereed (Clarivate IF-1.316) |
| 31. | 1994 | Worst months statistics of rain attenuation over an LOS microwave link | Electronics Letters, Vol 25, DOI:10.1049/EL:19941428 | Refereed (Clarivate IF-1.316) |
| 32 | 1994 | Rain attenuation characteristics : An observational study over a clear LOS micro -wave link at 11GHz, | Indian Journal of Radio and Space Physics, Vol. 23, 130-134. | Refereed Indexed in Scopus |
3. Participation and scholarly presentations in conferences:
(i). National :
| S. No. | Date | Title of Conference or Institution | Title/Subject of presentation (if made) |
| 1. | 9-11 January 2022 | India Conference on Radar Meteorology (iRAD-2022) IIT, Bhubaneswar | Chaired the session on “Moving platforms: Air-borne and Space – borne radars” |
| 2. | 8 -11, January 2017 | India Conference on Radar Meteorology (iRAD-2017) IIT, Kharagpur | Study of Hail Features Over the North East India by using 37 GHz TRMM Microwave Imager Channels and TRMM Precipitation Radar |
| 3. | 29Jan – 1 Feb, 2014. | 18th National Space Science Symposium, Dibrugarh University, Dibrugarh | Preliminary results of SARAL onboard Ka- band Altika radar and 24/37 GHz radiometer observations over Indian ocean. [Lead Talk] |
(ii). International :
| S. No. | Date | Title of Conference or Institution | Title/Subject of presentation (if made) |
| 1. | 2-6 August, 2021 | International Conference on Clouds and Precipitation (ICCP-2021)-, Pune, India | A comprehensive study of regional variability of electrical, lightning and microphysical properties of thunder clouds during the pre-monsoon season over the eastern and north eastern part of India |
| 2. | 09 -15 March 2019 | International Union of Radio Science (URSI) , Asia Pacific Radio Science Conference (AP-RASC 2019), New Delhi, India | A comprehensive multi sensor study of spatio-temporal variation of hail occurrence and their size over the north eastern part of India |
| 3. | 12-14 March, 2019 | International Symposium on integrated land use management in the Eastern Himalaya: Focus on Nagaland, Kohima, India | A Study of Spatio-Temporal Variation of Rainfall over the North-Eastern Part of India: Observation and Simulation |
| 4. | 17-19 January, 2019 | International Conference on Thunderstorms and Lightning in Tropics (ICTLT-2019) Shiksha O Anusandhan University, Bhubaneswar, India | A study of electrical and lightning characteristics of thunderstorms during pre-monsoon season over two different climatic regimes |
| 5. | 18-22 September, 2017 | 9th European Conference on Severe Storms (ECSS-2017) Pula, Croatia | Spatio‐temporal variation of hail features and associated mix phase microphysical properties as detected by satellite onboard sensors in two different climatic convective regimes |
| 6. | 22 -24, April 2014. | 2nd ISRO-CNES International Meet on SARAL: Science and Applications. Space Application Centre Ahmadabad, India | The effect of rain on SARAL/ALTIKA derived sea wave height |
| 7. | 24-29 June, 2012, | 7th European Conference on Radar in Meteorology and Hydrology, Toulouse, France | Study of Hail Storm features in Mesoscale Convective Systems by TRMM –Precipitation Radar and Microwave Imager over South East Asia. |
| 8. | 03-07 October 2011 | 6th European Conference on Severe Storms, (ECSS-2011) Palma de Mallorca, Spain | Severe storms over eastern region of India, Bangladesh plain and northern Bay of Bengal as observed from the TRMM sensors. |
| 9. | 15-17, March, 2011 | International meet on SARAL/ALtika: Science and Application, Space Application Centre, Ahmadabad, India | Radiance characteristics of 37 GHz channels of TMI with respect to TRMM-PR rain intensity and its application in rain retrieval from SARAL Sensors |
| 10. | October 12-16, 2009 | 5th European Conference on Severe Storms, (ECSS-2009) Landshut, Germany | The characteristics of Mesoscale Convective Systems over Tropics as observed from TRMM Microwave Imager |
| 11. | March 23-25, 2009, | International conference on MEGHA- TROPIQUES; Science and Application, ISRO Head Quarter, Bengaluru, India | Study of microwave radiance characteristics of TMI channels with respect to surface rain during Mesoscale convective system |
4. Ph.D. Supervisor/Co-Supervisor:
| Sl. No. | Name of the Students | Title of the Thesis/synopsis | Year of the Award & University | Present Status |
| 1. | Dr. Diganta Kumar Sarma (Regular) | Study of the atmospheric variability with the help of onboard active and passive sensors of TRMM and ground based Doppler radars. | 2008 Jadavpur University, Kolkata. | Asso. Professor B. Baruah College, Guwahati. (Assam). |
| 2. | Dr. Mahen. Konwar (Regular) | Study of tropical precipitating systems by using the Disdrometer, Wind Profilers and Doppler Weather Radar | 2010 Jadavpur University, Kolkata. | Scientist -E Indian Institute of Tropical Meteorology (IITM), Pune. Ministry of Earth Sciences. |
| 3. | Dr. Devajyoti. Dutta (Regular) | Study of the properties of Mesoscale Convective Systems over tropics (200 N- 200 S) and its application in rain retrieval | 2012 Jadavpur UniversityKolkata. | Scientist -C National Centre for Medium Range Weather Forecasting (NCMRWF), Ministry of Earth Sciences. |
| 4. | Dr. Partha Roy (Regular) | A study on structural and microphysical properties of rain bearing convective clouds over Indian summer monsoon region | 2018 Assam University,Silchar. | Scientist-C Regional Meteorological Centre, Agartala, Ministry of Earth Sciences |
| 5 | Dr. Anal Chandra Sarma (Part Time Scholar) | Study of Mesoscale Convective Systems with respect to prevailing environmental conditions and microphysical characteristics of rainfall | 2019 Assam University, Silchar. | Assistant Prof., Patkai Christian College, Dimapur Nagaland. |
| 6. | Dr. Utpal Misra (Part Time Scholar) | Study of regional variability of south west monsoon system over Indian subcontinent | 2020 Assam University Silchar. | Controller of Examination (COE), Bhatta Dev University, Pathsala, Assam |
| 7. | Dr. Rupraj Biswasharma | A Comprehensive Study of Electrical and Lightning Characteristics of the Premonsoon Thunderclouds and Associated Cloud Radiance Properties Over the Northeastern and Eastern Part of India: An Observational and Simulation Approach. | 2022 Nagaland University | Scientist -B Indian Institute of Tropical Meteorology (IITM), Pune, Ministry of Earth Sciences |
| 8. | Mr. Imolemba Longkumer | A Multi Sensor Study of the Premonsoon and Monsoon Rain Drop Size Distributions in Synergy with the Cloud Microphysical Properties Over the Northeastern and Eastern Part of India | Thesis Submitted Nagaland University | Project Scientist -B in Indian Institute of Tropical Meteorology (IITM), Pune. Ministry of Earth Sciences |
| 9. | Imlisunup Pongner | A Study of Electrified and Non-Electrified Precipitating Systems with Respect to the Associated Rainfall and Morphological Features over the Northeastern and Eastern Part of India | Ongoing Nagaland University | Asso. Prof., Kohima Science College, Autonomous, Jotsoma |
| 10. | Gour Prasad Pramanik | A Study of Seasonal Variation of Electrical and Lightning Properties of Thunderclouds in Association With the Atmospheric Thermodynamics and Cloud Properties Over the Eastern and Northeastern Part of India | Ongoing Nagaland University | Assistant Prof. Rampurhat College, Rampurhat, West Bengal. |
5. Honours /Awards & Fellowships:
| S. No. | Name of Award/Fellowship etc. | Awarded by | Year of Award |
| 1. | Governor’s Commendation Award for Meritorious Service | Government of Nagaland | 2019 |
| 2. | Meritorious Award for the growth of Higher Education in Nagaland | Department of Higher Education, Nagaland | 2019 |
| 3. | Heino Tooming Award under the category of International collaborative research work (Awarded to a group of scientists for paper presentation) | European Severe Storms Laboratory (ESLL) Weslling, Munchen, Germany | 2015 |
| 4. | ADCOS Research Fellowship to work at ISRO research Facility | Indian Space Research Organization (ISRO), Department of Space, Govt. of India | 2002 |
| 5. | Junior Associateship of Abdus Salam – International Centre of Theoretical Physics (AS-ICTP) Trieste, Italy. | AS-ICTP under the aegis of UNESCO | 1997 |
6. Other Academic Recognition
| Member for various academic bodies: (i). Member, Institute of Electrical and Electronics Engineers (IEEE) & Geoscience and Remote Sensing Society, USA. (ii). Life Member of Indian Association of Physics Teachers (IAPT), India. (iii). Life Member of India Meteorological Society (IMS) (iv) Life Member of Indian Radio Science Society (InRaSS) |
| Referee for various national/international research journals (i). Atmospheric Research (Elsevier Publication) (ii). Meteorological Applications ( Wiley Publication) (iii). Journal of Applied Meteorology and Climatology ( American meteorological Society publication). (iv). IEEE transaction of Geosciences and Remote Sensing (IEEE Publication)., (v). Advance in Space Research, A journal of COSPAR ((An Elsevier Publication) (vi). Indian Journal of Radio and Space Physics, (NISCAIR Publication) |