2015 Laureates of Emet Prize
In Category: Exact Sciences
In Field: Earth science
Prof. Daniel Rosenfeldwas born in Israel at 1952. After his military service he earned a B.Sc in Geology at the Hebrew University, and continued there for M.Sc and Ph.D in Cloud Physics in 1986. He did his post doctorate at NASA Goddard Space Flight Center in Maryland, and returned to Israel in 1988 and joined the faculty of the Hebrew University, where he serves now as a full professor.
In his many research activities he focused on the ways by which anthropogenic emissions of particulate air pollution affect cloud composition and precipitation forming processes. His main research means were measurements from instrumented airplanes in clouds over many parts of the world, accompanied by remote sensing by radars and satellites. He participated in development of weather satellites and their applications in the USA and Europe. His research yielded a range of discoveries, including the ways by which air pollution can inhibit the formation of rain in clouds and thus decrease rainfall from shallow clouds, but invigorate storm intensity, lightning and hail from deep clouds. He showed that wind risen sea spray has the opposite effect when it seeds the clouds - it enhances the rain and cleanses the clouds from air pollution. Based on these findings he developed new methods for rain enhancement by cloud seeding, and provided scientific guidance to such projects in Israel and many other countries. His findings provide a basis for improving weather forecasts, from the immediate range to the prediction of climate change and the extent of possible future global warming.
His research was published in nearly 170 papers so far, earned him many prizes, including the highest award given to foreign experts in China - the Friendship Award - in recognition of sharing his experience to build knowledge in the countries that suffer most from air pollution and shortage of rainfall.