International Eurasian Academy of Sciences, IEAS

Academician

Sergej Zilitinkevich†

Profile:

Elected Academician of the International Eurasian Academy of Sciences on 24 June 2013, the late Professor Sergej Zilitinkevich (1936–2021) was a distinguished atmospheric physicist whose work made fundamental contributions to planetary boundary-layer (PBL) meteorology, atmospheric turbulence, air–sea interactions, and environmental fluid dynamics. Born in Leningrad on 15 April 1936, he graduated from the Leningrad Hydrometeorological Institute in 1958 and received his Candidate of Sciences degree in 1963 and Doctor of Sciences degree in 1970 from the same institution. He began his scientific career at the Main Geophysical Observatory in Leningrad, where he worked from 1958 to 1986 and subsequently headed the Laboratory of Air–Sea Interaction. In 1992, he moved to Finland as a Senior Scientist at the Finnish Meteorological Institute and later held professorships at Uppsala University, the University of Helsinki, and the Finnish Meteorological Institute. From 2012 until his death, he served as Chief Scientist of the Pan-Eurasian Experiment (PEEX), contributing to its development as an international framework for research on climate change, atmospheric pollution, and land–atmosphere interactions. A Foreign Member of the Finnish Academy of Science and Letters, he received the Vilhelm Bjerknes Medal of the European Geophysical Society in 2000 and the Alfred Wegener Medal in 2015. He was also a recipient of the World Meteorological Organization’s IMO Prize, awarded posthumously in 2022.

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Professor Zilitinkevich’s research spanned more than six decades and established influential theoretical frameworks for understanding atmospheric turbulence, planetary boundary layers, air–sea coupling, and environmental fluid dynamics. His 1970 monograph, Dynamics of the Atmospheric Boundary Layer, became a classic reference in the field. Among his lasting theoretical contributions were the Zilitinkevich constant in the resistance law for neutrally stratified boundary layers, theoretical descriptions of the upper oceanic boundary layer, and parameterisations of turbulence under stable stratification. These developments have informed the representation of boundary-layer processes in numerical weather-prediction and climate models. He authored more than 200 peer-reviewed publications and nine books and supervised more than 20 Ph.D. students from numerous countries, many of whom subsequently became independent researchers and long-term scientific collaborators. His scientific legacy is also reflected in the Zilitinkevich Award, established by the International Eurasian Academy of Sciences, the World Meteorological Organization, and partner institutions to recognise outstanding contributions to atmospheric science, and in the continued development of PEEX, an international research programme whose scientific foundations he helped establish. Collectively, these contributions reflect a distinguished scientific career that advanced the theoretical foundations of atmospheric boundary-layer physics while fostering international cooperation in the study of climate and environmental change across Eurasia.