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

这个项目将在海气相互作用领域和更广泛的海气通量领域的知识和理解方面取得重要进展。现代仪器技术，如红外成像、数字粒子图像测速、激光诱导荧光、大量气体通量、空气侧热量和动量通量测量方法将结合起来，在华盛顿大学特别建造的可控湍流风水槽中对空气-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-水热和气体通量的流体动力学进行详细的、有控制的研究，并评估主动和被动红外技术推断热和气体传递速度的有效性。确定热是否可以作为空气-水-气传递的代理示踪剂。确定表面渗透理论是否比表面更新理论提供了一个更准确的空气-水热和气体传递的概念模型。更广泛的影响拟议的活动将有助于我们了解自然环境，从而造福社会。这种认识的提高将有助于更好地参数化与全球气候变化和数值天气预报模式有关的海气通量。海气通量对地球气候的重要性有充分的记录。热量，以凝结水汽释放的潜热的形式，提供了驱动全球大气环流的大部分能量。气体转移在生物地球化学循环中起着不可或缺的作用，由于温室气体和人为引起的全球气候变化的影响引起了社会的关注。该项目还将通过以下方式促进教学、培训和学习：一名研究生（被招募的少数族裔，见下文）的参与，将该研究生送到科学会议上展示成果，并在一名在职初级工作人员的本科学习期间指导她。该活动将通过招募一名少数族裔研究生（利用ASLO水生科学少数族裔项目等资源），雇用一名兼职女技术员（同时也是华盛顿大学海洋学项目的全日制学生），以及PI每年在西雅图女子学校的一个中学项目中教授少数族裔学生比例很高的课程，来扩大代表性不足的群体的参与。这项活动将建立一个独特的研究海气相互作用的设施，供他人使用，从而加强研究和教育的基础设施。这项活动将广泛传播成果，以加强科学和技术的理解，包括参加工程学院的年度开放日，建立一个专门传播该项目的数据和结果的网站，并在同行评议的期刊上发表文章。

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..