Transient tracer-based Investigation of Circulation and Thermal Ocean Change (TICTOC)

基于瞬态示踪剂的环流和热海洋变化调查 (TICTOC)

基本信息

批准号：
NE/P019099/1
负责人：
Jonathan Gregory
金额：
$ 42.86万
依托单位：
University of Reading
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%2FP019099%2F1
关键词：
Transient tracer based Investigation Circulation

项目摘要

Carbon dioxide produced by burning fossil fuels such as oil and gas is building up in the atmosphere and causing the planet to warm. The oceans have absorbed more than 90% of the heat trapped on the planet to date. However, this heating also causes the ocean to expand, leading to rising sea level and consequently to an increased risk to and vulnerability of people and industries located near the coast. Understanding how much sea level will change into the future allows us to plan accordingly the defences we need to install in order to safeguard the infrastructure and livelihoods of our coastal communities. Warming of the ocean is not geographically uniform however, as ocean currents move heat around the globe. This leads to contrasting changes in ocean temperature and sea level (affecting coastal communities and assets). By the end of the century, some regions may experience very large sea level rises of up to a metre while others will see far less (or even a lowering). This science program will use observations made from research ships and computer models of the ocean to understand where the ocean takes up heat from the atmosphere and how ocean currents transport and redistribute that heat. To study ocean currents we need a 'tracer' - something that is placed in and moves with the flow, like a chemical dye. Although not intentionally for this purpose, three varieties of tracers have been added to the atmosphere since the 1950s and have since gradually been absorbed into the ocean, and redistributed by ocean currents. These are radioactive carbon (produced by mid 20th century nuclear bomb tests), chlorofluorocarbons (historically used in refrigerators and aerosol cans, and which caused an expansion of the Ozone Hole) and more recently sulphur-hexafluoride (formerly found in tennis balls but now predominantly used in electrical industries as an insulator). These tracers have entered the ocean as distinct pulses at different times, forming a fortuitous experiment we can now observe. We will use high-precision equipment to measure these tracers in the Atlantic and Southern Oceans and collaborate with international partners to track their global fate. We will use these observations to estimate the rate at which heat is being absorbed and re-distributed throughout the ocean and to assess and improve climate model predictions of regional sea level rise.

燃烧化石燃料（例如石油和天然气）生产的二氧化碳正在大气中积聚，并使行星变暖。迄今为止，海洋吸收了超过90％的热量。但是，这种供暖也导致海洋扩展，从而导致海平面上升，从而增加了沿海地区人和行业的风险和脆弱性的增加。了解未来将变化多少海平面，使我们能够相应地计划我们需要安装的防御措施，以维护沿海社区的基础设施和生计。但是，随着洋流在全球周围的热量移动，海洋的变暖在地理上并不统一。这导致了海洋温度和海平面的对比变化（影响沿海社区和资产）。到本世纪末，某些地区可能会经历非常大的海平面上升到一米高，而另一些地区的海平面可能会少得多（甚至降低）。该科学计划将使用研究船和海洋计算机模型进行观察，以了解海洋从大气中吸收热量以及洋流如何运输和重新分配该热量。为了研究洋流，我们需要一个“示踪剂” - 放置在流动中，像化学染料一样移动。尽管不是出于此目的而故意的，但自1950年代以来，已经在大气中添加了三种示踪剂，此后逐渐被吸收到海洋中，并被洋流重新分配。这些是放射性碳（由20世纪中叶生产的核弹测试），氯氟化合物（历史上用于冰箱和气溶胶罐，它们引起了臭氧孔的扩张）和最近的Sulphur-Hexafluoride（以前是网球，但现在是网球中的，在电气产业中用作绝缘体）。这些示踪剂在不同的时间以不同的脉冲进入海洋，形成了我们现在可以观察到的偶然实验。我们将使用高精度设备来测量大西洋和南大洋的这些示踪剂，并与国际合作伙伴合作以跟踪其全球命运。我们将使用这些观察结果来估计在整个海洋中吸收和重新分布热的速度，并评估和改善区域海平面上升的气候模型预测。

项目成果

期刊论文数量（8）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Evolving patterns of sterodynamic sea-level rise under mitigation scenarios and insights from linear system theory

DOI：
10.1007/s00382-021-05727-7
发表时间：
2021-04
期刊：
Climate Dynamics
影响因子：
4.6
作者：
Quran Wu;Xuebin Zhang;J. Church;Jianyu Hu;J. Gregory
通讯作者：
Quran Wu;Xuebin Zhang;J. Church;Jianyu Hu;J. Gregory

Estimating Ocean Heat Uptake Using Boundary Green's Functions: A Perfect-Model Test of the Method.

DOI：
10.1029/2022ms002999
发表时间：
2022-12
期刊：
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
影响因子：
6.8
作者：
Wu, Quran;Gregory, Jonathan M.
通讯作者：
Gregory, Jonathan M.

Ocean-only FAFMIP: Understanding Regional Patterns of Ocean Heat Content and Dynamic Sea Level Change.

仅海洋 FAFMIP：了解海洋热含量和动态海平面变化的区域模式。

DOI：
10.1002/essoar.10501557.1
发表时间：
2020
期刊：
影响因子：
0
作者：
Todd A
通讯作者：
Todd A

The Influence of Warming Patterns on Passive Ocean Heat Uptake

变暖模式对被动海洋吸热的影响

DOI：
10.1029/2020gl088429
发表时间：
2020
期刊：
Geophysical Research Letters
影响因子：
5.2
作者：
Newsom E
通讯作者：
Newsom E

Mechanisms of Ocean Heat Uptake Along and Across Isopycnals

DOI：
10.1175/jcli-d-21-0793.1
发表时间：
2022-04
期刊：
Journal of Climate
影响因子：
4.9
作者：
L. Clement;E. McDonagh;J. Gregory;WU Q.;A. Marzocchi;J. Zika;A. J. G. NURSERa
通讯作者：
L. Clement;E. McDonagh;J. Gregory;WU Q.;A. Marzocchi;J. Zika;A. J. G. NURSERa