Joint SOLAS Bergen Mesocosm Experiment

联合 SOLAS 卑尔根中宇宙实验

• 批准号: NE/E011438/1
• 负责人: John Murrell
• 金额: $ 1.47万
• 依托单位: Newcastle University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FE011438%2F1
• 关键词: Joint; SOLAS; Bergen; Mesocosm; Experiment

This project will unify a number of individual projects within the current NERC SOLAS directed programme that are investigating the microbial processes controlling the production and consumption of atmospheric trace gases in the sea surface microlayer (SML). This is the interface through which climatically important trace gases such as CH4, N2O, CO, DMS, methyl halides and VICs must pass in order to be released to the atmosphere and/or taken up by the oceans. Microbes that both consume and produce these gases in the SML thus exert major controls on their biogeochemical cycles. The processes which regulate the activities of these microbes are poorly understood but can be directly addressed within UKSOLAS through generating a robust dataset including chemical and biological parameters under carefully defined experimental conditions. Although both SML sampling for biological and chemical components and measurements of SML gas exchange are now routinely possible through the work of the participating research groups, what is now needed is a coherent unifying approach that enhances the scientific deliverables of these ongoing UKSOLAS projects. The Bergen mesocosm facilities afford a unique opportunity for this; they will enable UKSOLAS scientists to generate a robust dataset for experimental analysis and modelling since it will be possible to follow SML microbiology, chemistry and trace gas transfer under carefully defined conditions throughout the course of a phytoplankton bloom, when several important trace gases will be produced and/or consumed microbially. This cannot easily be achieved on ocean-going cruises since the unpredictability of weather and sampling regimes often precludes the unified approach to measuring and sampling that we propose (see work plan). The outcomes of this work will provide valuable statistically-valid datasets for a number of UKSOLAS projects which are generated on large scale (rather than just in laboratory-based experiments) under defined experimental conditions. This will allow us to define the importance of microbes in the transfer of climatically important gases from the oceans to the atmosphere, a central aim of UKSOLAS.

该项目将统一当前 NERC SOLAS 指导计划中的多个单独项目，这些项目正在研究控制海面微层 (SML) 中大气微量气体的产生和消耗的微生物过程。这是对气候重要的痕量气体（例如 CH4、N2O、CO、DMS、卤代甲烷和 VIC）必须通过的界面，才能释放到大气中和/或被海洋吸收。因此，在 SML 中消耗和产生这些气体的微生物对其生物地球化学循环发挥着主要控制作用。人们对调节这些微生物活动的过程知之甚少，但可以通过在仔细定义的实验条件下生成包括化学和生物参数的强大数据集，在 UKSOLAS 内直接解决。尽管通过参与研究小组的工作，生物和化学成分的 SML 采样以及 SML 气体交换的测量现在通常可以实现，但现在需要的是一种连贯的统一方法，以增强这些正在进行的 UKSOLAS 项目的科学成果。卑尔根中生态系统设施为此提供了独特的机会；它们将使 UKSOLAS 科学家能够生成用于实验分析和建模的可靠数据集，因为可以在整个浮游植物水华过程中在仔细定义的条件下跟踪 SML 微生物学、化学和微量气体转移，此时微生物将产生和/或消耗几种重要的微量气体。这在远洋航行中很难实现，因为天气和采样制度的不可预测性常常妨碍我们提出的统一测量和采样方法（参见工作计划）。这项工作的成果将为许多 UKSOLAS 项目提供有价值的统计上有效的数据集，这些项目是在规定的实验条件下大规模生成的（而不仅仅是在基于实验室的实验中）。这将使我们能够确定微生物在将气候重要的气体从海洋转移到大气中的重要性，这是 UKSOLAS 的核心目标。