Direct Measurements of Carbon Dioxide (CO2), Dimethylsulfide (DMS), and Acetone Fluxes Over the Ocean by Eddy Covariance

通过涡度协方差直接测量海洋上空的二氧化碳 (CO2)、二甲硫醚 (DMS) 和丙酮通量

• 批准号: 0426314
• 负责人: Eric Saltzman
• 金额: --
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0426314&HistoricalAwards=false
• 关键词: Direct; Measurements; Carbon; Dioxide; CO2

Air-sea fluxes of three atmospherically important gases (carbon dioxide, dimethylsulfide, and acetone) will be measured aboard a ship platform using the technique of eddy covariance. In addition, the water concentrations of these species will be quantified. From the gradient in air and sea concentrations, and the observed exchange flux, it will be possible to derive gas exchange coefficients. The gases have very different seawater solubilities, so comparison of these coefficients under a variety of biogeochemical, oceanographic, and atmospheric conditions will provide significant insight into the mechanism of air-sea gas exchange.Broader impacts of this work include contributions to the understanding of processes affecting atmospheric reactivity and climate change by helping to quantify important sources and sinks of these species. The data acquired in this study will be valuable for testing models of the budgets of these species. This project will also provide support for a graduate student to carry out dissertation research.

三种重要的大气气体（二氧化碳、二甲基硫醚和丙酮）的海气通量将在一个船舶平台上使用涡度相关技术进行测量。 此外，将对这些物种的水浓度进行量化。 根据空气和海洋浓度梯度以及观测到的交换通量，将有可能推导出气体交换系数。 这些气体有非常不同的海水溶解度，因此这些系数在各种海洋地球化学，海洋学和大气条件下的比较将提供显着的洞察海气exchanges.broader影响的机制，这项工作包括通过帮助量化这些物种的重要来源和汇的过程影响大气反应性和气候变化的理解的贡献。 本研究中获得的数据对于测试这些物种的预算模型非常有价值。 该项目还将为研究生开展论文研究提供支持。