Collaborative Research: Spray-Mediated Gas Fluxes across the Air-Sea Interface

合作研究：喷雾介导的气海界面气体通量

• 批准号: 1356377
• 负责人: Edgar Andreas
• 金额: $ 19.93万
• 依托单位: NorthWest Research Associates, Incorporated
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-06-01 至 2016-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1356377&HistoricalAwards=false
• 关键词: Collaborative; Research; Spray; Mediated; Gas

Ocean-atmosphere scientists have for many years been studying how bubbles in ocean whitecaps influence the exchange of gases across the air-sea interface. Bubbles provide greater contact surface area between air and water, and the over-pressure of gases in submerged bubbles forces their dissolution. Sea spray droplets likewise increase the effective surface area of the atmosphere-ocean interface, yet little is known of their role in air-sea gas exchange, or their effectiveness compared to bubbles. Understanding the exchange of atmospheric green-house gases such as CO2 into the global ocean is important to global warming and ocean acidification. This study will use a microphysical model and knowledge of the rate at which spray droplets are produced to evaluate the role of sea spray in enhancing air-sea gas exchange, and compare this to other sea-air gas exchange rates, and mechanisms.

海洋大气科学家多年来一直在研究海洋白浪中的气泡如何影响海气界面上的气体交换。气泡在空气和水之间提供更大的接触表面积，并且浸没气泡中的气体的过压迫使它们溶解。海洋喷雾液滴同样增加了大气-海洋界面的有效表面积，但很少有人知道它们在空气-海洋气体交换中的作用，或者它们与气泡相比的有效性。了解大气温室气体（如二氧化碳）进入全球海洋的交换对全球变暖和海洋酸化至关重要。这项研究将使用微物理模型和知识的速度，喷雾液滴产生的海喷雾在提高空气-海洋气体交换的作用进行评估，并比较这与其他海-气气体交换率，和机制。