Dr. Sazzala Jeevananda Reddy is an Agrometeorologist got post-graduation in Geophysics & Applied Statistics with the advanced training in Meteorology & Oceanography and numerical weather prediction. Dr. Reddy got his Ph.D. in Agricultural Meteorology from the "The Australian National University", Canberra. Dr. Reddy has a wide experience in the field of Agrometeorology and Agroclimatology while working in several national and international institutions/organizations within and outside India. Dr. Reddy served Food and Agriculture Organization [FAO] as Expert & World Meteorological Organization [WMO] as Chief Technical Advisor. The author is one of the few scientists who started his carrier in the science of Climate Change as back as early 1970s. Dr. Reddy carried out analysis using observed meteorological data series over different parts of the globe. Using findings from such studies, Dr. Reddy presented concept of adopting agriculture in long-term agriculture planning in the semi-arid tropics. In this direction Dr. Reddy brought out several reports & books to educate the World Community; and published scientific articles in national and international journals and as well presented at several national and international conferences in the fields of the Earth & the Atmospheric sciences that includes geophysics, geomagnetism, agroclimatology, Agrometeorology and related issues