CONFERENCE/WORKSHOP/MEETINGS ORGANIZED

·                     International workshop “Water resources impact on Agriculture , health and Environment” in Jawaharlal Nehru University –A joint workshop by Jawaharlal Nehru University-Washington university, USA one of the organizer from11 and 12^th  Jan 2011

·                     Organized 6th DST sponsored PAC committee on integrated programme on Dynamics of Glaciers in the Himalayas from 19^th to 20^th September, 2010 at SES, JNU.

·                     Organizing Secretary of International Conference on Climate Change and Environment at Cochin University of Science & Technology, Kochi, Kerala, India on 24^th to 26^th October, 2010.

·                     Organizing Secretary of International Workshop on Climate Change and Island Vulnerability at Kadmat, Union Territory of Lakhadweep, India on 28^th to 31^st October, 2010

·                     DST sponsored Expert Committee on Integrated programme on Dynamics of Glaciers in the Himalayas from 17^th to 18^th March, 2009 at SES, JNU

·                     National Conference on Scientific Strategies for protection and Preservation of Wetlands in India sponsored by DST, Govt. of India, and organized by School of Environmental Sciences, J.N.U New Delhi. 11^th to 12^th January, 2010

·                     Organized 3^rd DST sponsored Expert Committee on Integrated programme on Dynamics of Glaciers in the Himalayas from 17^th to 18^th March, 2009 at SES, JNU

·                     Organized 1^st DST sponsored brain storming session on Dynamics of Glaciers in the Himalaya on 8^th March, 2008 at SES, JNU

·                     Organized International conference on Coastal Environment-Vulnerability and assessment, Indo-Australian Meet on Coastal and related aspects in SES, JNU from 12^th to 15^th Feb, 2007 sponsored by UGC, JNU, UNESCO, DST, MoEF, Govt of India

·                     Organized International conference on ground water (IGC, 2006) from 1^st to 4^th Feb, 2006 in JNU sponsored by JNU, KTH, Sweden, SIDA Sweden UNICEF, India, UNESCO, India, DST and MoEF, Govt. of India

·                     “Water & Management” organized by School of Environmental Sciences, JNU., New Delhi (19^th September to 5^th October, 2005)

·                     International conference on Biogeochemistry of Estuaries –Mangroves and the Coastal Zone Management”, sponsored by DOD,ENVIS-JNU and INCOH, in SES, JNU New Delhi (23^rd to 24^th March, 2004)

·                     Short term DST training course on “Mathematical Modeling of Ground Water Flow and Mass transport through theory and hands on training,” organized by School of Environmental Sciences, J.N.U., New Delhi (12^th November to 9^th December, 2004)

·                     International Seminar on Biogeochemistry of Estuaries and Mangroves, sponsored by DOD, Govt. of India conducted on 3^rd to 6^th February, 2004 in SES, JNU, New Delhi

·                     National seminar on water quality sponsored by MoEF and RGNNDWM, Govt. of India, Oct 3-4^th, 2002 at SES, JNU

·                     International seminar on eco-hydrology, 2^nd to 5^th November, 2001 SES, JNU.

• International seminar on Applied Hydro-geochemistry, 3^rd to 5^th November, 1998, Annamalai University, Annamalai Nagar

Participation in conferences/training/seminar:

·                      Gave an Invited talk on  “Climate, Glaciers and Water resources in International workshop “Water resources impact on Agriculture , health and Environment” in Jawaharlal Nehru University –A joint workshop by Jawaharlal Nehru University-Washington university, USA one of the organizer from11 and 12^th  Jan 2011

·                     Gave a invited talk on Fluoride contamination and the various Defluridation technique: At DST National workshop on Fluoride in natural waters at Jodhpur organized by J.N.V Univ., on 6-8^th Dec 2011

·                     Gave a talk on “land fill impact on ground water “ in DST training program Organized by Earth science department at Annamalai University, Chidambaram Tamilnadu from Nov 10-12th 2010

·                     Gave a talk on Sediment characteristics on mangrove ecosystem in  14^th Indian association of sedimentologist and national seminar and climate change held at  Jammu University, Jammu  from 21-24^th Dec 2010

·                     Study of arsenic enrichment in ground water of Ganga-Ghagri plain in Ballia-Ghazipur regions: a future concern” GSA Denver annual meeting USA ,31^st October to 3^rd November, 2010.

·                     Presented a paper on “Assessment of Groundwater for Human use in Thoubal , District of Manipur, India from 24^th to 26^th October, 2010 at Puket, Thailand

·                     Gave an invited talk in national seminar on recent trends in water research at Annamalai University on “ The role of water quality in the overall water resource management on 3^rd February, 2010

·                     Presented a paper on Sediment-nutrient dynamics in selected Indian mangrove ecosystems – land use and climate change implications” at ICCE-IAHS 2010 Conference in Warsaw, Poland , 14^th to 18^th June, 2010

·                     Visiting fellow at LGGE lab Grenoble, France  in 12^th to 25^th April, 2010 through IFCIPAR –DST program in LGGE laboratory , Grenoble, France and also gave lecture on Himalayan glaciology research advances and perspectives in LGGE

·                     Gave a talk on” Sea level rise impact on Small islands :Indian perspective” in the Climate and Environmental Physics department, University of Bern, Switzerland on 18^th April, 2010

·                     Gave an invited talk on Coastal environmental challenges and resulting disaster risks in National Institute of Disaster management, New Delhi on 15^th July, 2010

·                     Gave an invited talk on “Climate change impact and Himalayan Glaciers hazards” in the national seminar on Natural Hazards and Climate Change at Madras university, Chennai from 11^th to 13^th March, 2010

·                     Gave an invited talk on “Natural Hazards due to GLOFs in Himalayas” in the national workshop on Geomatic based natural resource disaster mitigation and management at Tamil University, Tanjore from 22^nd to 26^th February, 2010

·                     Gave a invited talk in Tamil on “ Bumi Veepmamum Paniparikalin Nilaklaum-Indiya Kannottam” in 10^th Tamilnadu Science Congress in a special session on Global Warming going held on 21^st May, 2010 at Manomanium Sunderanar University, Tirunelveli

·                     Gave an invited talk on “Solute transport and contamination status of ground water in Landfill regions of NCR, Delhi” at DST training program on “Aqua chemical modeling in water research pollution: held at earth science department Annamalai university, Chidambaram from 15^th November to 2^nd December, 2010

·                     Gave an invited talk on “De-F using natural materials for a village water supply-A new initiative” a DST workshop on Water purification: Possibilities and perspectives” held at JNV university, chemistry department, Jodhpur, from 4^th to 5^th December, 2010.

·                     Invited talk on “Understanding the Surface – Ground Water Interaction Using the Combination; Hydro-geochemical and Statistical Modeling Approaches” Training Programme on “Applications of Hydro-geochemical Modeling in Water Research” 1^st to 5^th March, 2010, organised by Department of Earth Sciences, Annamalai University Annamalainagar, Chidambaram, Tamil Nadu

·                     Invited talk on Need for identification of vulnerable groundwater patches in mid Gangetic plains with special reference to Arsenic contamination to avoid mass poisoning at National seminar on water auditing, Jaipur, India.

·                     Sediment characteristics of Sundarban mangroves, West Bengal, India National Seminar on Deltas and other Sedimentary Basins: Their Resource Potential, 16^th to 18^th December, 2009, organized by Delta Studies Institute, Andhra University, Visakhapatnam

·                     Invited talk on "Hydrogeochemical tools for indentifying the Geogenic sources of ground water in Delhi “Regional Workshop on ground water organized by CGWB, Govt of India at IARI, New Delhi on 4^th to 5^th March, 2009

·                     Invited talk on "Coastal environmental settings and hazards (including Deltaic, Estuarine, Small Island, etc.)" in the national training course on "Environment & Disasters" at National Institute of Disaster Management, New Delhi on 12^th to 16^th January, 2009

·                     Invited talk on Preliminary Studies on the Mass Balance of Chhota Shigri glacier, Himachal Pradesh, India. Proceedings Paper, Workshop on mass balance measurements and modeling held on 25^th to 28^th  March, 2008 at Skeikampen, Norway and online by International Glaciological Society (at annals@igsoc.org)

·                     Presented a paper in the International Conference on Environment, (ICENV) organized by University Sains Malaysia, Penang, Malaysia on 15^th to 17^th December, 2008

·                     Presented a paper in the International Conference and EXPO on Environmental Management and Technologies. 10^th to 12^th December, 2008, KualaLumpur, Malaysia

·                     Invited talk on the water quality workshop cum training program organized by NIH, Roorkee on 7^th to 14^th July, 2008

·                     Tracer techniques for subsurface hydrological studies in Gangotri glacier, international workshop on Glacier Inventory held in Lanzhou, China from 21^st to 24^th September, 2008.

·                     Invited to talk given on the International workshop on coastal nutrient Budgeting: LOICZ Approach, 10^th to 12^th September, 2008 at Anna University, Chennai, organized by Anna University and LOICZ

·                     Presented a paper on coastal ground water quality ( Indo-US) IUSSTF meeting in Goa,17^th to 21^st March, 2008 at TERI Goa

·                     Invited talk on ground water quality in the INDO-FRENCH seminar on 29^th to 31^st January, 2008 at Bhavnagar organized by CIFIPRA (Indo-French forum) at Ahmadabad.

·                     Invited talk in the National Workshop on Trace elements research at NEHU, Shillong (4^th to 6^th March, 2008) at NEHU, Shillong organized by UGC-DAE Consortium, Kolkata.

·                     Invited talk on status of ground water quality in the Indo-Swedish workshop for Coastal Urban Sustainable Development on 4^th April, 2008 at India Habitat Centre, Lodi road, New Delhi, organized by SIDA, Swedish embassy and TERI.

·                     Invited talk on Phosphorous fractionation in Pichavaram mangroves: International seminar on wetland and sustainability, 4^th to 6^th September, 2007 Johar Bahru, Malaysia, organized by Malaysian Govt. environment department (Sponeresd by IFS , Sweden) \

·                     Invited talk on Tsunami impact on the Aquatic environments and ground waters in coastal Tamilnadu- In Geological Hazards through Ocean drilling, August 26^th to 30^th,2007, Portland Oregon, USA sponsored by USGS.

·                     National workshop on Tsunami risk Management, 29^th November, 2007 organized by National Disaster management authority, Govt of India.
Isotope application in Ground water hydrology –an invited lecture given on DST sponsored workshop on Isotope application in Hydrology in Annamalai University Earth science department, April 3^rd to 4^th, 2007.

·                      Invited talk on “Biogeochemical status of selected mangrove ecosystems of East Coast of India" under the technical session of "Mangrove, wetland dunes" in "International Symposium on Management of Coastal Ecosystem: Technological Advancement and Livelihood Security", organized by Indian Society of Costal Agricultural Research (ISCAR) 27^th to 30^th October, 2007 at Science City, Kolkata, India.

·                     Invited talk on Nutrient Dynamics in Mangrove Ecosystem: Case Studies from East Coast of India. International Conference Coastal Zone Environment and Sustainable Development Vulnerability, Adaptation and Beyond, School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 12^th to 14^th February, 2007.

·                     Presented an invited talk on Arsenic in ground waters of Central Gangetic Plain in Geological Society of America Annual meeting in Philadelphia USA from 23^rd to 25^th October, 2006

·                     Invited talk on Groundwater for Sustainable Development Problems, Perspectives and Challenges (IGC-2006), Jawaharlal Nehru University, New Delhi 1^st to 4tth February, 2006.

·                     Invited talk on Water quality and arsenic contamination in the ground waters of the Gangetic plains in India, a future concern” Asia Oceania geosciences society 2^nd annual meeting, Singapore AOGS, 20^th to 24^th June, 2005.

·                     Presented a paper on Hydro geochemistry of ground water of Ghazipur district UP with especial reference in South American conference on Arsenic in Mexico from 21^st to 24^th June, 2006 in Mexico City.

·                     Presented a paper on Nutrient distribution in Pichavaram mangroves India in the Asia Pacific conference on Mangroves at Maritime institute of Malaysia from 20^th to 22^nd August, 2006 in Kula Lumpur, Malaysia

·                     LOICZ meeting on river-coastal environment interaction, 15^th to 19^th October,Colombo,Srilanka. 

·                     Tsunami impact on Coastal ground waters of India. AOGS conference 20^th to 24^th June, 2005 in Singapore (UGC sponsored for paper presentation) 2005.

·                     Nutrient cycling in the Pichavaram mangrove, Malaysian science congress, Kula Lumpur, 12-14^th Aug 2005 nominated by the IFS, Sweden.

·                     Status of coastal zone management in India and Africa, in the int. conf on Indo-Africa coastal zone management organized by the Society for Indian Ocean, July, 2005, New Delhi

·                     National seminar on environmental issues: Itinerary of Time” organized by School of Environmental Sciences, JNU, New- Delhi, dated 5^th June, 2005

·                     Invited talk on “Hydrogeochemistry of Ground Water in and around Phalgu Plain in Bodhagaya, Bihar, India” in the National Workshop Cum Conference Emerging Technology for Ground Water Pollution: Drinking Water Perspective organized by department of civil engineering, IIT Delhi, dated 19^th to 20^th May, 2005.

·                     Paper presented on “Groundwater Arsenic contamination in the middle Gangetic Plain, in District Ballia (U.P), India. A future concern:” in the National Workshop/Conference Emerging Technology for Ground Water Pollution: Drinking Water Perspective, organized by Department of Civil Engineering, IIT Delhi, on 19^th to 20^th May, 2005

·                     Presented paper in the International Workshop on “Mathematical Modeling of Coastal Ground Water Flow and Mass transport through theory and hands on training,” organized by School of Environmental Sciences, J.N.U., New Delhi (12^th November to 9^th December, 2004)

·                     Presented a paper in International Seminar on “Coastal and Mangrove Ecosystem” held at SES, JNU, New Delhi, India on 23^rd to 24^th March, 2004.

·                     Presented paper in the International Conference on “Coastal and Freshwater issue” held at Anna University, Chennai, India (8^th to 10^th December, 2003).

·                     APN/START/LOCIZ regional workshop on assessment of fluxes to coastal zone in S. Asia and their impacts, 9^th to 11^th, December, 2002 in Negombo, Srilanka.

·                     International Seminar on Head water resources management, United States University, Naorobi, Kenya, 7^th to 9^th September, 2002, Nairobi, Kenya.

·                     Presented a paper in International workshop on Mangrove resilience, Indo-Belgium workshop, French Institute of Pondicherry, 14^th to 19^th November,2002

·                     Presented a paper on Study of the impact of lignite mining to the environment in and around Neyveli, Tamilnadu, India. Proceedings of Geoinformatics 17^th to 18^th  November, 2002 at PSG college of Technology, Coimbatore

·                     Participated in the National Workshop on Water quality held at School of Environmental Sciences, Jawaharlal Nehru University, New Delhi India,  1^st to 2^nd February, 2002.

·                     Presented a paper in UNESCO-JNU international training workshop on recent trends in Eco hydrology, 28^th Nov. 2001. New Delhi. 

·                     Presented a paper in International Workshop on EIA with special regard to Water Resource management, Bangkok and FIH, Germany, 12^th to 16^th November,2001.

·                     Presented a paper on “Chemical nature of groundwater at different depth in hard rock terrain, Erode district”. Proceedings of the national seminar on Environmental management and pollution abatement, Department of Civil Engineering IIT Delhi

·                     International Workshop on Geo-environmental hazards and Brain storming session on Arsenic problem, UNESCO-JNU, New Delhi on  November, 2000.

·                     Presented  paper title  “Major ions Chemistry of Nandanvan nala of Gangotri glacier, Garhwal Himalaya, India” in proceeding of the NATIONAL CONFERENCE ON GREEN CHEMISTRY organized by SRM University, NCR campus Modinagar, Ghaziabad, Indai from 16th to 17th  September, 2010

·                     Presented  paper in abstract volume entitled “Meltwater Characteristics of Raktvarn nala of Gangotri glacier, Garhwal Himalaya, India” in the NATIONAL SEMINAR ON SUSTAINABLE CONSUMPTION, CLIMATE CHANGE AND CONSUMER- TOWARDS A BETTER FUTURE at IIPA, New Delhi, India.