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Venkatramani Balaji

ORG Princeton University Title Head, Modeling Systems Group, GFDL BIO Dr. V. Balaji has an M.Sc in Physics from the Indian Institute of Technology, Kanpur, and a Ph.D in Physics from the Ohio State University. His background is in the modeling of cloudscale dynamics (non-hydrostatic moist convection and gravity waves) and its effect on climate. This field has always involved the application of the most advanced computational technologies to science, and the development of interdisciplinary models requiring specialists in many fields (meteorology at various scales, hydrology, radiative transfer, boundary layer dynamics). His publications cover the breadth of the field: they include papers on atmospheric climate, ocean dynamics, cloudscale dynamics, non-hydrostatic models of gravity waves, computational methods, and software engineering. With his background in physics and climate science, he has become an expert in the area of parallel computing and scientific infrastructure, providing high-level programming interfaces for expressing parallelism in scientific algorithms. Over the years, this breadth has evolved into an interest in the development of modeling infrastructures, beginning with the creation of the GFDL Flexible Modeling System, of which he is the chief architect, moving to technical leadership roles in international consortia to build similar frameworks across multiple institutions (the Earth System Modeling Framework in the US, and the Program for Integrated Earth System Modeling in Europe). This pioneering use of frameworks allowing the construction of climate models out of independently developed components sharing a technical architecture, is now accepted practice. Going further, he has led the development of curators (FMS Runtime Environment FRE) for the execution of complex workflows to manage the complete climate modeling process. The Earth System Curator (US) and Metafor (EU) projects, in which he plays a key role, have developed the use of a common information model which allows the execution of complex scientific queries on model data archives. Dr. Balaji plays a key role in designing systems for the interpretation of climate projection data, including the delivery of data from the globally coordinated CMIP3 and CMIP5 experiments. Globally coordinated modeling studies demand a global data sharing infrastructure, and Dr. Balaji is a founding member of the Earth System Grid Federation, and on the steering committee for the Global Organization of Earth System Science Portals (GO-ESSP). He was recently appointed co-chair of the WGCM Infrastructure Panel(WIP), tasked with developing the scientific requirements for the global data infrastructure underlying CMIP. He has grants now covering the development of climate analytics on exascale data archives (ExArch: international grant under the NSF-G8 initiative) and of governance of global software infrastructure (Commodity Governance: COG, an interdisciplinary collaboration of physical and social scientists, software engineers and historians). Dr. Balaji's writings and research include efforts to raise awareness of the serious challenges of climate change, and making available widespread access to the scientific tools for the study of climate change. He is particularly active in the area of attracting students with an interest in advanced informational technology and computational science to this scientific problem of high societal and policy significance. This includes articles aimed at students at ACM (Association for Computing Machinery) and AAAS (American Association for the Advancement of Science), talks and courses at institutions like the Computer Society of India and the Abdus-Salam International Centre of Theoretical Physics. He is also on a Faculty team helping develop coursework for a Graduate Certification in Computational Science through the Princeton Institute for Computational Science and Engineering (PICSciE). Dr. V. Balaji has headed the Modeling Systems Group since 2003, serving developers of Earth System models at GFDL and Princeton University. He serves on the Scientific Advisory Boards of the ORNL Climate Change Science Institute and the Max-Planck Institute for Meteorology in Hamburg. He also plays advisory roles on many other NSF, NOAA and DOE review panels, including the 2010 series of DOE exascale workshops, and was a co-author of the 2012 National Academies report on "A National Strategy for Advancing CLimate Modeling". He is a sought-after speaker and lecturer and is committed to provide training in the use of climate models in developing nations, leading workshops to advanced students and researchers in South Africa and India. His last workshop (July 2013) was sponsored by the Abdus-Salam International Centre for Theoretical Physics (ICTP) from Trieste, Italy, and hosted by the Indian National Centre for Ocean Information Science (INCOIS) in Hyderabad, India. The course will help train advanced students in India in ocean modeling, aimed at the study of the Indian monsoon, which is an ocean-atmosphere coupled problem. With this and future courses he aims to help develop an indigenous capability in India for coupled modeling of the Earth System.