PRESENTED PAPERS/ ATTENDED National Conferences: 1. 2. 3. 4. 5. 6. 7. 8. 9. Study of whistlers in horizontally and vertically polarized components, National Space Science Symposium., Feb. 19-22 ,1986, Guhati . Effect of layered earth on the frequency spectrum of atmospherics, National Space Science Symposium (Ahemdabad )Abstract Book , 344-345, 1987 The Frequency spectrum of atmospherics , National Space Science symposium (Ahemdabad ) , Abstract Book, 346, 347 , 1987 On the 30-60 days period waves in zonal wind at lower an middle atmospheric heights over Thumba , International Symp . On Optical and Radio Remote Sensing of the Atmos . Environ . Oct .22-26, 1990 , New Delhi Observation of tweeks in vertical and horigental polarization, Naional Workshop on Recent Developments in Atmospheric and Space Science, Univ. Of Roorkee, Roorkee, March 1921.2001. A study of 30-70 day period waves in zonal wind over mid and high latitude stations, National Conference On Advance in Atomic Molecular and Nuclear Physics, Ghaziabad Abstract Book , P94, 2009. National Workshop on Recent developments in Atmospheric an Space Sciences, Univ. of Roorkee, Roorkee, March 19-21, 2001. National Conference on Green Chemistry: “An Approach to Meet The Challenges of Sustainability ” 22-23 Jan. 2011, M.M.H. College Ghaziabad. National Symposium on Animal Biodiversity Physiological Aspects of Environmental Strategies, 19-20, Feb 2010 M.M.H. College Ghaziabad. International Conferences: 1. Fifth MST Workshop on Technical and Scientific Aspects of MST Radar, Aberystwyth, U.K. August 6-9, 1991. 2. Sixth MST Workshop on Technical and Scientific Aspects of MST Radar, Chung-Li, Taiwan, R.O.C., August 17-20, 1993. 3. 24th General Assembly of URSI, Kyoto, Japan, August 25 - September 2, 1993. 4. 62th Gaseous Electronic Conference- Nov. 21-25 (2009), Saratoga Springs New York. 5. International Seminar on Global Environment & Disaster Management: Law & Society, July 2224, 2011, Vigyan Bhawan, New Delhi. School Attended: 1. Workshop on Fundamentals in Atmospheric Science , I.I.Sc, Bangalore , March 1 -17, 1990 2. First Winter School on Indian MST Radar, S.V. Univ. Tirupati, Jan , 28-Feb. 4, 1991.