Vitaly Khvorostyanov is Professor of Physics of the Atmosphere and Hydrosphere, Central Aerological Observatory (CAO), Russian Federation. His research interests are in cloud physics, cloud numerical modeling, atmospheric radiation, cloud-aerosol and cloud-radiation interactions with applications for climate studies and weather modification. He has served as Head of the Laboratory of Numerical Modeling of Cloud Seeding at CAO, Coordinator of the Cloud Modeling Programs on Weather Modification by Cloud Seeding in the USSR and Russia, Member of the International GEWEX Radiation Panel of the World Climate Research Program and Member of the International Working Group on Cloud-Aerosol Interactions. Dr Khvorostyanov has worked as a visiting scientist and Research Professor in the United States, United Kingdom, France, Germany and Israel. He has co-authored nearly 200 journal articles and four books: Numerical Simulation of Clouds (1984), Clouds and Climate (1986), Energy-Active Zones: Conceptual Foundations (1989) and Cirrus (2002). Dr Khvorostyanov is a member of the American Geophysical Union and the American Meteorological Society.
Judith Curry is Professor and Chair of the School of Earth and Atmospheric Sciences at the Georgia Institute of Technology. She previously held faculty positions at the University of Colorado, Penn State University and Purdue University. Dr Curry's research interests span a variety of topics in the atmospheric sciences and climate. Current interests include cloud microphysics, air and sea interactions and climate feedback processes associated with clouds and sea ice. Dr Curry is co-author of Thermodynamics of Atmospheres and Oceans (1999) and editor of the Encyclopedia of Atmospheric Sciences (2003). She has published more than 190 refereed journal articles. Dr Curry is a Fellow of the American Meteorological Society, the American Association for the Advancement of Science and the American Geophysical Union. In 1992, she received the Henry Houghton Award from the American Meteorological Society.