[04.08]“走向深海”系列讲座(Roy Barkan专场)
[复制链接] 分享:【报告题目】Oceanic Turbulence Regimes and Their Impact on the Climate System and the Environment
【报告人】Prof. Roy Barkan
【时间】2025年4月8日,星期二,15:00
【地点】北京大学物理楼北539
【主办】北京大学海洋研究院、北京大学工学院
【报告人简介】
Prof. Barkan has been a faculty member in the Faculty of Exact
Sciences at Tel Aviv University and a researcher in the Department of
Atmospheric and Oceanic Sciences at UCLA since 2018. His research focuses on
geophysical and environmental fluid dynamics with an emphasis on understanding
oceanic turbulence patterns and processes. In his research he combines
analytical theories, high-resolution idealized and realistic numerical
circulation models, and observational data analysis to investigate ocean heat,
tracer, and energy transport across spatial and temporal scales, and from the
ocean surface to the interior. Prof. Barkan holds a Ph.D in oceanography from
the Scripps Institution of Oceanography at UCSD.
【报告摘要】
The ocean absorbs most of the heat and about a quarter of the carbon
emissions caused by human activities. These anthropogenic perturbations
significantly influence the ocean circulation, with direct and critical
implications for the climate system. The ocean circulation is characterized by
diverse turbulence regimes that span a vast range of spatial and temporal
scales. Understanding how these distinct turbulence regimes and their
interactions lead to the observed spatiotemporal distributions of energy, heat,
and tracers in the ocean is essential for predicting circulation adjustments
and their effects on the climate system.
In this talk, I will discuss how the interplay between different
oceanic turbulent regimes shapes the ocean circulation, with a particular focus
on cross-scale energy transfers and dissipation patterns. I will also
distinguish between the dominant processes occurring in the ocean’s mixed layer
and in the deeper thermocline region and show some representative examples
relevant to pollutant transport and to biology. Finally, I will introduce a new
collaborative project funded by the Israeli and Chinese science foundations,
aiming to investigate similar processes in the South China Sea.