Workshop on air-sea interactions under tropical cyclones (hurricanes)

我们目前对热带气旋（飓风）下的海气相互作用过程的了解远不能令人满意，这是限制我们改进热带气旋预报（特别是强度预报）能力的因素之一。然而，进一步改进海气通量参数化和近地面湍流模拟是一项艰巨的科学挑战，因为：(1)需要提高对所有相关过程的理解，包括近地面大气和海洋湍流、表面波、表面破碎波、海喷雾和气泡的产生、喷雾与大气湍流之间的相互作用、气泡与海洋湍流之间的相互作用；(2)从风暴尺度到气泡和喷雾的微观物理尺度，这些过程发生在广泛的时空尺度上；(3)由于许多这些过程强烈依赖于表面波条件，因此为了正确预测海气相互作用过程及其对热带气旋动力学的影响，可能有必要将大气、波浪和海洋模式完全耦合起来。显然，我们需要一个协调的跨学科努力，以显著改善热带气旋下海气相互作用过程的预测。因此，PI小组正在组织一个讲习班，目的是：确定需要重点关注的近期和长期科学问题；加强不同学科的科学家/工程师之间的沟通；并建立一个框架，以促进和培育新的跨学科研究活动。研讨会将由三位共同组织者组织，Tetsu Hara（海气相互作用），Stephan Grilli（海洋工程，波浪破碎）和Isaac Ginis（海洋和大气建模），并将于2010年在罗德岛大学的Alton Jones校区举行。ppi将针对一个国际和多学科，但足够小的群体，以便在一般性讨论中方便沟通。我们将保持资历和多样性的平衡，并向国际社会伸出援手，特别关注早期职业研究人员。讲习班将邀请一半左右的参与者来自其他国家，从而促进国际合作。该奖项由ENG和GEO董事会共同资助。

Hara0940398Our current understanding of air-sea interaction processes under tropical cyclones (hurricanes) is far from satisfactory and is one of the factors that are limiting our ability to improve tropical cyclone prediction (intensity prediction, in particular). Further improvement of air-sea flux parameterizations and near surface turbulence modeling, however, is a formidable scientific challenge because: (1) the need to improve understanding of all relevant processes, including near surface atmospheric and oceanic turbulence, surface waves, surface breaking waves, sea spray and bubble generations, interactions between sprays and atmospheric turbulence, interactions between bubbles and oceanic turbulence; (2) these processes occur over a wide range of temporal and spatial scales, from the storm scale to microphysical scales of bubbles and sprays; and (3) since many of these processes are strongly dependent on the surface wave conditions, it may be necessary to fully couple the atmospheric, wave, and ocean models in order to properly predict the air-sea interaction processes and their impact on tropical cyclone dynamics. It is evident that we need a coordinated interdisciplinary effort to significantly improve predictions of air-sea interaction processes under tropical cyclones. The PI team are thus organizing a workshop aimed on: identifying immediate and long term scientific issues to be focused upon; enhancing communication among scientists/engineers in different disciplines; and building a framework in which novel interdisciplinary research initiatives are promoted and nurtured. The workshop will be organized by 3 co-organizers, Tetsu Hara (air-sea interaction), Stephan Grilli (ocean engineering, wave breaking), and Isaac Ginis (ocean and atmospheric modeling), and will be held at the Alton Jones campus of the University of Rhode Island in 2010. The PIs will target an international and multi-disciplinary, but small enough group to allow for easy communication during general discussions. We will maintain a balance of seniority and diversity and reach out to the international community, paying special attention to early career investigators. The workshop promotes international cooperation since about half of the participants will be invited from other countries.This award is being co-funded by the ENG and GEO directorates.