FInite eLement Adaptive grid Modelling of Ecosystems and Nutrient Transport

生态系统和养分输送的有限元自适应网格建模

• 批准号: NE/F004184/1
• 负责人: Matthew Piggott
• 金额: $ 39.2万
• 依托单位: Imperial College London
• 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%2FF004184%2F1
• 关键词: FInite; eLement; Adaptive; grid; Modelling

Phytoplankton (microscopic plants) grow in the surface waters of the ocean and, like plants on land, use up carbon dioxide, which is absorbed into the ocean from the atmosphere. The growth of the phytoplankton depends on sunlight and on their supply of nutrients (food). This supply in turn is influenced by the ocean eddies and currents, and vertical motions that bring the nutrients into the surface waters from deeper in the ocean. Just how these mechanisms operate is not well understood in some parts of the ocean (the subtropics). Therefore, computer models of the biology (ecosystem) and the physics (eddies, currents, vertical motions) are used to try to help our understanding. Unfortunately, despite many advances in computing, limitations on computer power mean that it is not easy to model large areas of the ocean, such as the North Atlantic, while at the same time being able to capture all that is happening at much smaller scales (down to one kilometre or less). In this research project we will develop a new model that can represent what is happening accurately at both the large and small scales. The model will work by continuously adapting how it carries out calculations, in order to resolve the spatial scales required to accurately simulate the biology and physics at any location in the ocean. This will make best use of the available computer power. It will allow us to develop a better understanding of how the ocean physics affects the biology. This will contribute to a better understanding of the part the oceans play in the global carbon cycle and so in climate change.

浮游植物（微型植物）生长在海洋表面的沃茨，像陆地上的植物一样，消耗二氧化碳，二氧化碳从大气中被吸收到海洋中。浮游植物的生长依赖于阳光和它们的营养（食物）供应。这种供应反过来又受到海洋漩涡和洋流的影响，以及将营养物质从海洋深处带入表面沃茨的垂直运动。在海洋的某些地区（亚热带），这些机制是如何运作的还不清楚。因此，生物学（生态系统）和物理学（涡流，电流，垂直运动）的计算机模型被用来帮助我们理解。不幸的是，尽管计算技术取得了许多进步，但计算机能力的限制意味着，要在模拟北大西洋等大面积海洋的同时，能够捕捉到小得多的尺度（小到一公里或更小）发生的一切并不容易。在这个研究项目中，我们将开发一个新的模型，可以准确地表示在大尺度和小尺度上发生的事情。该模型将通过不断调整其计算方式来工作，以解决准确模拟海洋中任何位置的生物和物理所需的空间尺度。这将充分利用现有的计算机能力。它将使我们能够更好地了解海洋物理学如何影响生物学。这将有助于更好地了解海洋在全球碳循环以及气候变化中所起的作用。

项目成果

Adapting to life: ocean biogeochemical modelling and adaptive remeshing

适应生活：海洋生物地球化学建模和自适应网格重整

• DOI: 10.5194/os-10-323-2014
• 发表时间: 2014
• 期刊: Ocean Science
• 影响因子: 3.2
• 作者: Hill J

On the performance of a generic length scale turbulence model within an adaptive finite element ocean model

自适应有限元海洋模型中通用长度尺度湍流模型的性能

• DOI: 10.1016/j.ocemod.2012.07.003
• 发表时间: 2012
• 期刊: Ocean Modelling
• 影响因子: 3.2
• 作者: Hill J