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Prof. Peili Wu在我室报告
来源:LASG    访问次数:    更新时间:2018-11-1

Free Modes and Low-frequency Variability in the Atmosphere

Prof. Peili Wu
Met Office Hadley Centre, UK

2018年11月1日(星期四)10:00
新楼1118会议室

报告会主持人:毛江玉 研究员

   
报告人简介:
Peili Wu is an expert scientist at the Met Office Hadley Centre in the UK and a fellow of the Royal Meteorological Society. He obtained a PhD in atmospheric dynamics and a Diploma in Physics from Imperial College London. He spent seven years at Edinburgh University developing ocean models and researching in physical oceanography before he joined the Hadley Centre in January 1999. His research covers a broad range of climate dynamics focusing on air–sea interactions through the global water cycle. He is currently the science coordinator of UK–China Climate Science for Services Partnership (CSSP) supported by the Newton Fund and Work Package3 lead on East Asia climate variability and extremes. His current research also includes drought and extreme precipitation.

报告人摘要:
Atmospheric circulation fluctuates around a number of quasi-steady states generating a rich spectrum of low-frequency variability. There are very few known exact solutions to the governing equations of the atmosphere. I will introduce a set of finite amplitude large-scale exact solutions to the barotropic vorticity equation. The resonant excitation and instability of these steady states solutions are suggested as a fundamental process for low-frequency atmospheric variability. As global warming continues to strengthen land-sea thermal contrasts, this process may become even more relevant to interactions between the high and the low latitudes.

 
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