Collaborative Research: Diel Biogeochemical Cycling of CO, OCS, and HOOH in the Sargasso Sea - Measuring and Modeling Distribution, Fluxes and Processes

OCE-9811208/9815190/9815179/9815187世界海洋光照充足的表层水域是与大气层进行物质交换的区域，也是以无数化学反应为特征的区域，其中许多化学反应是由阳光驱动的。在这个项目中，研究人员将对上层海洋中的一氧化碳、一氧化碳和过氧化氢的循环进行量化和建模。所有这三种物种都是由有色溶解有机物的太阳光解产生的。将在海上对三个物种进行高分辨率测定，并进行适当的光学、生物学和气象学测量。将使用实验室实验和数学模型来限制相互转化的可能机制，并估计未测量的通量。研究人员希望对海洋中这些具有全球重要性的化学物种的化学成分以及它们在海洋和低层大气之间的交换达到前所未有的了解。

OCE-9811208/9815190/9815179/9815187The well-lit surface waters of the world ocean is a region of material exchange with the atmsophere as well as a region characterized by a myriad of chemical reactions, many of which are driven by sunlight. In this project, the investigators will quantify and model the diel cycling of carbonyl sulfide, carbon monoxide, and hydrogen peroxide in the upper ocean. All three species are generated by solar photolysis of colored disdolved organic matter. High resolution determinations of threse three species will be made at sea together with appropriate optical, biological, and meterological measurements. Laboratory experiments and mathematical models would be used to constrain the possible mechanisms of interconversion and to estimate unmeasured fluxes. The investigators expect to achieve an unprecedented understanding of the chemistry of these globally-important chemical species in the sea as well as their exchange between the ocean and lower atmsophere.