Controls over Ocean Mesopelagic Interior Carbon Storage (COMICS)

对海洋中层内部碳储存的控制（COMICS）

基本信息

批准号：
NE/M020908/1
负责人：
Mark Trimmer
金额：
$ 26.62万
依托单位：
Queen Mary University of London
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FM020908%2F1
关键词：
Controls over Ocean Mesopelagic Interior

项目摘要

The surface ocean is home to billions of microscopic plants called phytoplankton which produce organic matter in the surface ocean using sunlight and carbon dioxide. When they die they sink, taking this carbon into the deep ocean, where it is stored on timescales of hundreds to thousands of years, which helps keep our climate the way it is today. The size of the effect they have on our climate is linked to how deep they sink before they dissolve - the deeper they sink, the more carbon is stored. This sinking carbon also provides food to the animals living in the ocean's deep, dark 'twilight zone'. Computer models can help us predict how future changes in greenhouse gas emissions might change this ocean carbon store. Current models however struggle with making these predictions. This is partly because until recently we haven't even beenable to answer the basic question 'Is there enough food for all the animals living in the twilight zone?'. But in a breakthrough this year we used new technology and new theory to show that there is indeed enough food. So now we can move on to asking what controls how deep the carbon sinks. There are lots of factors which might affect how deep the material sinks but at the moment we can't be sure which ones are important. In this project we will make oceanographic expeditions to two different places to test how these different factors affect carbon storage in the deep ocean. We will measure the carbon sinking into the twilight zone and the biological processes going on within it. Then we will determine if the systems are balanced - in other words, what goes in, should come out again. We will then write equations linking all the parts of the system together and analyse them to make them more simple. At the same time we will test whether the simple equations are still useful by seeing if they produce good global maps of ocean properties for which we have lots of data. Finally, when we are happy that our new equations are doing a good job we will use them in a computer model to predict the future store of carbon in the ocean.

表层海洋是数十亿种称为浮游植物的微型植物的家园，这些植物利用阳光和二氧化碳在表层海洋中产生有机物。当它们死亡时，它们会下沉，将这些碳带入深海，在那里以数百至数千年的时间尺度储存，这有助于保持我们今天的气候。它们对气候影响的大小与它们溶解前下沉的深度有关——下沉越深，储存的碳就越多。这种下沉的碳还为生活在海洋深处、黑暗的“暮光区”的动物提供食物。计算机模型可以帮助我们预测未来温室气体排放的变化可能如何改变海洋碳储存。然而，当前的模型很难做出这些预测。部分原因是直到最近我们还无法回答“是否有足够的食物供生活在暮光区的所有动物使用”这个基本问题。但今年我们取得了突破，用新技术、新理论来证明，确实有足够的食物。现在我们可以继续询问是什么控制着碳汇的深度。有很多因素可能会影响材料下沉的深度，但目前我们无法确定哪些因素是重要的。在这个项目中，我们将前往两个不同的地方进行海洋考察，以测试这些不同因素如何影响深海的碳储存。我们将测量沉入暮色区的碳以及其中发生的生物过程。然后我们将确定系统是否平衡——换句话说，进来的东西应该再出来。然后，我们将编写将系统所有部分连接在一起的方程式并对其进行分析以使它们变得更加简单。与此同时，我们将通过观察简单方程是否可以生成我们拥有大量数据的良好的海洋特性全球图来测试这些简单方程是否仍然有用。最后，当我们对新方程表现良好感到高兴时，我们将在计算机模型中使用它们来预测未来海洋中的碳储存量。

项目成果

期刊论文数量（4）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Advection Not Dispersion and Transient Storage Controls Streambed Nutrient and Greenhouse Gas Concentrations

平流而非扩散和瞬时储存控制河床养分和温室气体浓度

DOI：
10.3389/frwa.2021.668183
发表时间：
2021
期刊：
Frontiers in Water
影响因子：
2.9
作者：
Comer-Warner S
通讯作者：
Comer-Warner S

Suspended particles are hotspots of microbial remineralization in the ocean's twilight zone

DOI：
10.1016/j.dsr2.2023.105339
发表时间：
2023-10
期刊：
Deep Sea Research Part II: Topical Studies in Oceanography
影响因子：
0
作者：
V. Hemsley;J. Füssel;M. Duret;R. Rayne;M. Iversen;S.A. Henson;R. Sanders;P. Lam;M. Trimmer
通讯作者：
V. Hemsley;J. Füssel;M. Duret;R. Rayne;M. Iversen;S.A. Henson;R. Sanders;P. Lam;M. Trimmer

Seasonal variability of sediment controls of nitrogen cycling in an agricultural stream