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个人简介
I am an Associate Professor in Physical Climate Science in AOPP, with a focus on large scale atmospheric dynamics. My interests revolve around the weather and climate of the mid-latitudes, in particular the jets, storm tracks and the large scale regimes such as blocking. I work on basic understanding of these features, how they vary and also how they respond to forcing such as anthropogenic climate change. A recent focus has been investigating mechanisms of seasonal prediction for Europe, in summer as well as winter.
I have recently been appointed the Oxford Joint Chair of the Met Office Academic Partnership(link is external), and look forward to working more closely with the Met Office on today's pressing weather and climate issues. Please do get in touch with me if you have any questions about Oxford - Met Office collaboration, I am here to help initiate and develop new projects and links.
My research focuses on the dynamics of weather and climate in the extratropics, particularly in the North Atlantic region. Our weather patterns are strongly influenced by the jet stream which blows across the Atlantic towards northern Europe. The Atlantic storm track is closely associated with the jet: individual storms are strongly steered by the jet stream winds yet they themselves feed kinetic energy and momentum into the jet. The result is a strong two-way coupling between the jet and the storm track. The fluid dynamics of this system has been studied for decades but continues to offer surprises. Some of my work aims to deepen our understanding of this system, for example how the jet varies from year to year and from decade to decade.
The pictures below show two different examples of blocking events. Here the jet has been diverted or blocked by a large and dramatic breaking of atmospheric Rossby waves. The result for Europe is an easterly wind regime and a relative lack of storms. This can lead to extreme weather at all times of the year: heatwaves in summer and cold spells in winter.
The work of our group has direct relevance to many societal issues. At the forefront of these is climate change. There is now overwheliming evidence that climate change on the global scale is in progress as a result of greenhouse gas emissions. The scientific challenge now revolves around the regional details. How the jet streams and storm tracks respond to this forcing will be critical for the changes which will be experienced on the ground. As examples, I have highlighted the role of ocean dynamics in storm track change and the uncertainty surrounding changes in high-impact blocking.
Climate models are a essential tools for making projections of future change. These models have improved greatly over recently decades but still require further improvement and also a solid understanding of the physics and dynamics they represent so that we can have confidence in their projections. I work closely with the Met Office and other scientists around the UK to evaluate and improve our climate models, for example looking at whether we should trust projected changes in extratropical cyclones.
I have recently been appointed the Oxford Joint Chair of the Met Office Academic Partnership(link is external), and look forward to working more closely with the Met Office on today's pressing weather and climate issues. Please do get in touch with me if you have any questions about Oxford - Met Office collaboration, I am here to help initiate and develop new projects and links.
My research focuses on the dynamics of weather and climate in the extratropics, particularly in the North Atlantic region. Our weather patterns are strongly influenced by the jet stream which blows across the Atlantic towards northern Europe. The Atlantic storm track is closely associated with the jet: individual storms are strongly steered by the jet stream winds yet they themselves feed kinetic energy and momentum into the jet. The result is a strong two-way coupling between the jet and the storm track. The fluid dynamics of this system has been studied for decades but continues to offer surprises. Some of my work aims to deepen our understanding of this system, for example how the jet varies from year to year and from decade to decade.
The pictures below show two different examples of blocking events. Here the jet has been diverted or blocked by a large and dramatic breaking of atmospheric Rossby waves. The result for Europe is an easterly wind regime and a relative lack of storms. This can lead to extreme weather at all times of the year: heatwaves in summer and cold spells in winter.
The work of our group has direct relevance to many societal issues. At the forefront of these is climate change. There is now overwheliming evidence that climate change on the global scale is in progress as a result of greenhouse gas emissions. The scientific challenge now revolves around the regional details. How the jet streams and storm tracks respond to this forcing will be critical for the changes which will be experienced on the ground. As examples, I have highlighted the role of ocean dynamics in storm track change and the uncertainty surrounding changes in high-impact blocking.
Climate models are a essential tools for making projections of future change. These models have improved greatly over recently decades but still require further improvement and also a solid understanding of the physics and dynamics they represent so that we can have confidence in their projections. I work closely with the Met Office and other scientists around the UK to evaluate and improve our climate models, for example looking at whether we should trust projected changes in extratropical cyclones.
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npj Climate and Atmospheric Scienceno. 1 (2024): 1-16
NATURE CLIMATE CHANGE (2024)
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Geophysical Research Lettersno. 13 (2024): n/a-n/a
NATURE CLIMATE CHANGEpp.1-8, (2024)
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GEOPHYSICAL RESEARCH LETTERSno. 12 (2024): n/a-n/a
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