Collaborative Research: Laboratory Investigations of Heat and Gas Transfer at an Air-Water Interface

0425305/0425395智力价值该项目将在海-气相互作用领域内以及更广泛的空气-水通量领域内，在知识和理解方面产生重大进展。将结合红外成像、数字粒子图像测速、激光诱导荧光、散体气体通量以及空气侧热量和动量通量测量方法等现代仪器技术，在华盛顿大学专门建造的可控湍流风槽中对空气-水热通量的流体动力学进行详细研究。拟议研究的目标是：1.对控制空气-水热量和气体通量的流体动力学进行详细、可控的研究，并评估主动和被动红外技术推断热量和气体传递速度的有效性。确定热是否可以用作空气-水气体转移的替代示踪剂。确定表面穿透理论是否提供了比表面更新理论更准确的空气-水热量和气体传输的概念模型。博德影响拟议的活动将有助于我们对自然环境的理解，从而使社会受益。这种更好的理解将导致更好地对与全球气候变化有关的海气通量进行参数化和数值天气预报建模。海气通量对地球气候的重要性是有据可查的。热量以凝结水蒸气释放的潜热的形式提供了推动全球大气循环的大部分能量。气体转移在生物地球化学循环中扮演着不可或缺的角色，由于社会对温室气体和人为导致的全球气候变化的影响的关注，该项目也将通过研究生(招募的少数民族，见下文)的参与来促进教学、培训和学习，将研究生送到科学会议上展示结果，并在本科学习期间指导目前的初级工作人员。这项活动将通过招募一名少数族裔研究生(利用水产科学中的少数族裔计划等资源)、雇用一名兼职女性技术员(她也是华盛顿大学海洋学专业的全日制学生)以及国际学生协会每年在西雅图女子学校一个少数族裔学生比例较高的中学项目中任教的方式，扩大未被充分代表的群体的参与。该活动将通过建立一个独特的研究海-气相互作用的设施来加强研究和教育的基础设施，供其他国家使用。这项活动将广泛传播成果，通过参加每年一度的工程学院开放参观活动，建立一个专门传播项目数据和成果的网站，并在同行评议的期刊上发表文章，从而增进对科学技术的了解。

0425305/0425395Intellectual MeritThis project will produce an important advancement in knowledge and understanding within the air-sea interaction community and more broadly in the area of air-water fluxes. Modern instrumental techniques such as infrared imaging, digital particle image velocimetry, laser-induced fluorescence, bulk gas flux, and air-side heat and momentum flux measurement methods will be combined to perform a detailed study of the hydrodynamics of air-water heat fluxes in a specially constructed controlled-turbulence wind flume tank at the University of Washington. The objectives of the proposed research are to:1. Conduct a detailed, controlled study of the hydrodynamics governing air-water heat and gas fluxes and to evaluate the effectiveness of active and passive infrared techniques to infer heat and gas transfer velocities.2. Determine if heat can be used as a proxy tracer for air-water gas transfer.3. Determine if surface penetration theory provides a more accurate conceptual model of air-water heat and gas transfer than surface renewal theory.Broader ImpactsThe proposed activity will benefit society by contributing to our understanding of the natural environment. This improved understanding will lead to better parameterizations of air-sea fluxes relevant to global climate change and numerical weather forecast modeling. The importance of air-sea fluxes to the Earth's climate is well documented. Heat, in the form of latent heat released by condensing water vapor, provides much of the energy driving global atmospheric circulation. Gas transfer plays an integral role in biogeochemical cycling and is of interest because of societal concerns about the effect of greenhouse gases and anthropogenically induced global climate change.The project will also promote teaching, training, and learning through participation of a graduate student (recruited minority, see below), sending the graduate student to scientific meetings to present results, and mentoring a current junior staff member during her undergraduate studies. The activity will broaden the participation of underrepresented groups by recruiting a minority graduate student (using resources such as the ASLO Minorities in Aquatic Sciences Program), employing a part-time female technician who is also a full-time student in the oceanography program at the University of Washington, and by the PI annually teaching in a middle school program at Seattle Girls School with a high percentage of minority students. The activity will enhance infrastructure for research and education by building a unique facility for studying air-sea interaction that will be made available for use by others. The activity will have broad dissemination of results to enhance scientific and technological understanding thorough participation in the annual College of Engineering Open House, establishment of a web site devoted to dissemination of data and results from the project, and publications in peer reviewed journals..