Role of the Overturning Circulation in Carbon Accumulation (ROCCA)

翻转循环在碳积累中的作用(ROCCA)

基本信息

  • 批准号:
    NE/Y005287/1
  • 负责人:
  • 金额:
    $ 78.15万
  • 依托单位:
  • 依托单位国家:
    英国
  • 项目类别:
    Research Grant
  • 财政年份:
    2023
  • 资助国家:
    英国
  • 起止时间:
    2023 至 无数据
  • 项目状态:
    未结题

项目摘要

Human activities have caused atmospheric CO2 levels to increase dramatically, but their growth has been slowed by the oceans absorbing approximately one quarter of this anthropogenic carbon (Canth). Globally, the North Atlantic Ocean stores the highest quantities of Canth, due to local CO2 uptake from the atmosphere, and large-scale ocean currents, particularly the Atlantic Meridional Overturning Circulation (AMOC) delivering waters high in Canth to northern locations where they cool, get denser and sink to great depths away from contact with the atmosphere. Models project that the size of this carbon sink will reduce in the coming decades despite continued atmospheric CO2 increases, as surface warming increases stratification, decreases CO2 solubility, and AMOC weakening slows the transport of dense waters to depth. However there is substantial model spread regarding flux peak, and decline timing. The same models show a large range in ocean carbon transports, often related to AMOC representation. The balance between air-sea fluxes and ocean transports to North Atlantic Canth accumulation is thus not well constrained both now and into the future, and subject to large uncertainties.Previous observational studies have attempted to quantify the contributions of these processes to Canth accumulation in order to assist with model verification and validation. However, it is not currently possible to directly measure anthropogenic air-sea CO2 fluxes - they are chemically identical to those with 'normal', non-human-derived CO2. And while they can be calculated indirectly from trans-ocean basin decadal repeat cruises, this approach is subject to large uncertainties. It is thus impossible to constrain why fluxes (or carbon transports) vary on shorter timescales, or how they interact with the AMOC. For this we require frequent estimates of ocean transports combined with frequent estimates of how quickly carbon concentrations are increasing in the ocean.This project will look to do precisely that. Firstly, we will generate new high-resolution estimates of Canth transports across the subtropical and subpolar boundaries of the North Atlantic, relying on the outputs from the RAPID (10day) and OSNAP (monthly) mooring arrays. At RAPID, we will extend to 2024 the 2004-2013 time-series we published in 2021 and that identified a stable, northward Canth transport that was highly variable over all time scales (weekly, monthly, seasonally, annually, interannually), and highly correlated to the AMOC.We will collect new sub-seasonal water samples in Florida Straits, at the western boundary. The waters that flow through the Straits represent the vast majority of the upper, northward-flowing part of the overturning circulation but we don't currently account for any variability in water mass characteristics (chemical or otherwise) in the transport calculation there, so are not fully characterising the AMOC:carbon coupling.We'll generate a novel Canth transports time-series for 2014-2022 at the OSNAP, identifying how it co-varies with AMOC, and RAPID carbon transports. We'll track the changing interior (anthropogenic) carbon signal using novel, publicly-available datasets based on ship and autonomous platform data. Combined, we'll form a North Atlantic budget with transports at the southern and northern boundaries, and evolving concentrations in the interior. The residual will represent Canth entering (or leaving) through the surface - the air-sea flux.The contributions of air-sea fluxes and ocean circulation to regional carbon accumulation will be determined, better understanding how, with AMOC, they work together to store carbon. The calculation scheme, its components and transport/air-sea flux/AMOC relationships will be tested in earth system models, before observations are compared to simulation outputs. Our findings will help improve the accuracy of climate models, which is crucial for predicting the effects of climate change.
人类活动导致大气二氧化碳水平急剧增加,但海洋吸收了大约四分之一的人为碳(CATH),减缓了大气CO2水平的增长。在全球范围内,由于当地从大气中吸收二氧化碳,以及大规模洋流,特别是大西洋子午线翻转环流(AMOC),北大西洋储存了数量最多的坎特加,将高坎特加的水输送到北部地区,在那里它们冷却,密度变得更高,并下沉到远离与大气接触的很深的地方。模型预测,这种碳汇的大小将在未来几十年内减小,尽管大气中的二氧化碳持续增加,因为地表变暖增加了层结,降低了二氧化碳的溶解度,而大气有机碳的减弱减缓了稠密水向深处的输送。然而,关于流量峰值和下降时机,存在大量的模型价差。同样的模型显示了海洋碳传输的很大范围,通常与AMOC表示有关。因此,海气通量和海洋输送对北大西洋CATH累积的平衡在现在和未来都没有得到很好的约束,而且存在很大的不确定性。以前的观测研究试图量化这些过程对CATH累积的贡献,以帮助模型验证和验证。然而,目前还不可能直接测量人为的大气-海洋二氧化碳通量--它们在化学上与那些“正常”的、非人类来源的二氧化碳的通量相同。虽然可以通过跨大洋盆地十年一遇的重复航次间接计算,但这种方法存在很大的不确定性。因此,不可能限制通量(或碳传输)为什么在较短的时间尺度上变化,或者它们如何与AMOC相互作用。为此,我们需要频繁地估计海洋运输量,并经常估计海洋中碳浓度增加的速度。这个项目将寻求做到这一点。首先,我们将根据快速(10天)和OSNAP(每月)系泊阵列的输出,生成跨越北大西洋副热带和亚极地边界的CATH传输的新的高分辨率估计。在RAPID上,我们将把我们在2021年发布的2004-2013年时间序列延长到2024年,该序列确定了稳定的向北Canth输送,在所有时间尺度上(每周、每月、季节性、每年、每年)都是高度可变的,并与AMOC高度相关。我们将在西部边界的佛罗里达海峡收集新的亚季节性水样。流经海峡的水代表了倾覆环流中向北流动的上层部分的绝大多数,但我们目前在那里的输送计算中没有考虑到水团特征(化学或其他)的任何变化,因此没有完全描述AMOC:碳耦合。我们将在OSNAP生成一个新的2014-2022年Canth输送时间序列,确定它如何与AMOC和快速碳输送共同变化。我们将使用基于船舶和自主平台数据的新颖的、公开可用的数据集来跟踪不断变化的内部(人为)碳信号。联合起来,我们将形成一个北大西洋预算,在南部和北部边界进行运输,并在内陆不断发展集中。残留物将代表石灰岩通过表面--海-气通量进入(或离开)。将确定海-气通量和海洋环流对区域碳积累的贡献,从而更好地理解在AMOC的作用下,它们如何共同储存碳。在将观测结果与模拟结果进行比较之前,将在地球系统模型中测试计算方案、其组成部分以及传输/海-气通量/AMOC关系。我们的发现将有助于提高气候模型的准确性,这对预测气候变化的影响至关重要。

项目成果

期刊论文数量(0)
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Peter Brown其他文献

Second primary malignancies in patients with lymphoma in Denmark after high-dose chemotherapy and autologous haematopoietic stem-cell transplantation: a population-based, retrospective cohort study.
丹麦淋巴瘤患者接受高剂量化疗和自体造血干细胞移植后的第二原发恶性肿瘤:一项基于人群的回顾性队列研究。
  • DOI:
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    0
  • 作者:
    T. Trab;J. Baech;L. Jakobsen;S. Husby;M. Severinsen;S. Eloranta;J. Gørløv;J. Jørgensen;Sif Gudbrandsdottir;T. Larsen;Peter Brown;Kirsten Grønbæk;K. Smedby;T. El
  • 通讯作者:
    T. El
Predictive multibody dynamic simulation of human neuromusculoskeletal systems: a review
人类神经肌肉骨骼系统的预测多体动态模拟:综述
  • DOI:
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    3.4
  • 作者:
    M. Febrer;A. Nasr;Mahdokht Ezati;Peter Brown;J. M. Font;J. McPhee
  • 通讯作者:
    J. McPhee
Corticospinal transmission to leg motoneurones in human subjects with deficient glycinergic inhibition
甘氨酸抑制不足的人类受试者中皮质脊髓向腿部运动神经元的传递
  • DOI:
    10.1113/jphysiol.22.024091
  • 发表时间:
    2002
  • 期刊:
  • 影响因子:
    0
  • 作者:
    J. Nielsen;M. Tijssen;N. L. Hansen;C. Crone;N. Petersen;Peter Brown;J. G. V. Dijk;Jc Rothwell
  • 通讯作者:
    Jc Rothwell
Force platform recordings in the diagnosis of primary orthostatic tremor.
力平台记录在原发性直立性震颤诊断中的应用。
  • DOI:
    10.1016/s0966-6362(01)00127-8
  • 发表时间:
    2001
  • 期刊:
  • 影响因子:
    2.4
  • 作者:
    K. Yarrow;Peter Brown;M. Gresty;Adolfo M. Bronstein
  • 通讯作者:
    Adolfo M. Bronstein
Cardiovascular diseases after high‐dose chemotherapy and autologous stem cell transplant for lymphoma: A Danish population‐based study
高剂量化疗和自体干细胞移植治疗淋巴瘤后的心血管疾病:丹麦的一项基于人群的研究
  • DOI:
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    6.5
  • 作者:
    J. Baech;S. Husby;T. Trab;Kristian Kragholm;Peter Brown;J. Gørløv;J. Jørgensen;Sif Gudbrandsdottir;M. Severinsen;Kirsten Grønbaek;T. Larsen;T. Wästerlid;S. Eloranta;K. Smeland;L. Jakobsen;T. El
  • 通讯作者:
    T. El

Peter Brown的其他文献

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{{ truncateString('Peter Brown', 18)}}的其他基金

The Gulf Stream control of the North Atlantic carbon sink
湾流对北大西洋碳汇的控制
  • 批准号:
    NE/W009560/1
  • 财政年份:
    2023
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Research Grant
Temporally patterned closed-loop stimulation for therapy of brain disorders
用于治疗脑部疾病的时间模式闭环刺激
  • 批准号:
    MC_UU_12024/1
  • 财政年份:
    2015
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Intramural
Biomarkers for Deep Brain Stimulation
深部脑刺激的生物标志物
  • 批准号:
    G0901503-E01/1
  • 财政年份:
    2011
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Research Grant
DDIG: Culture and the Experience of Chronic Disease: The Case of Diabetes in Urban India
DDIG:慢性病的文化和经验:印度城市糖尿病案例
  • 批准号:
    0962435
  • 财政年份:
    2010
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
Doctoral Dissertation Improvement Grant: Identity Pluralism and Social Status in Thailand
博士论文改进补助金:泰国的身份多元化和社会地位
  • 批准号:
    0823639
  • 财政年份:
    2009
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
Doctoral Dissertation Improvement Grant: Altruism in the Face of Stigmatization: Volunteering to Provide Home-Based Care for People Living with AIDS in Addis Ababa, Ethiopia
博士论文改进补助金:面对耻辱的利他主义:志愿为埃塞俄比亚亚的斯亚贝巴的艾滋病患者提供家庭护理
  • 批准号:
    0752966
  • 财政年份:
    2008
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
Doctoral Dissertation Improvement Grant: Post-Traumatic Stress Disorder among Anglo- and Mexican-American Male Veterans of Iraq and Afghanistan
博士论文改进补助金:伊拉克和阿富汗的英裔和墨西哥裔美国男性退伍军人的创伤后应激障碍
  • 批准号:
    0650437
  • 财政年份:
    2007
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
Doctoral Dissertation Improvement Grant: Surviving the Russian Transition
博士论文改进补助金:在俄罗斯转型中生存
  • 批准号:
    0550376
  • 财政年份:
    2006
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
Doctoral Dissertation Improvement Grant: Global Development in Policy and Practice: The Polio Eradication Initiative from Atlanta to Rural Pakistan
博士论文改进补助金:政策和实践的全球发展:从亚特兰大到巴基斯坦农村的根除脊髓灰质炎行动
  • 批准号:
    0613159
  • 财政年份:
    2006
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
Dissertation Research: The Corporation Next Door: Pharmaceutical Companies in Puerto Rico's Public Health and Public Trust
论文研究:隔壁的公司:波多黎各公共卫生和公众信任的制药公司
  • 批准号:
    0314446
  • 财政年份:
    2003
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant

相似海外基金

NSFGEO-NERC: Collaborative Research: Role of the Overturning Circulation in Carbon Accumulation (ROCCA)
NSFGEO-NERC:合作研究:翻转环流在碳积累中的作用(ROCCA)
  • 批准号:
    2400434
  • 财政年份:
    2024
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
Collaborative Research: Prospects and limitations of predicting a potential collapse of the Atlantic meridional overturning circulation
合作研究:预测大西洋经向翻转环流潜在崩溃的前景和局限性
  • 批准号:
    2343204
  • 财政年份:
    2024
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
Collaborative Research: Prospects and limitations of predicting a potential collapse of the Atlantic meridional overturning circulation
合作研究:预测大西洋经向翻转环流潜在崩溃的前景和局限性
  • 批准号:
    2343203
  • 财政年份:
    2024
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
NSFGEO-NERC: Collaborative Research: Role of the Overturning Circulation in Carbon Accumulation (ROCCA)
NSFGEO-NERC:合作研究:翻转环流在碳积累中的作用(ROCCA)
  • 批准号:
    2400435
  • 财政年份:
    2024
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
NSFGEO-NERC: Collaborative Research: Role of the Overturning Circulation in Carbon Accumulation (ROCCA)
NSFGEO-NERC:合作研究:翻转环流在碳积累中的作用(ROCCA)
  • 批准号:
    2400433
  • 财政年份:
    2024
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Standard Grant
Role of the Overturning Circulation in Carbon Accumulation (ROCCA)
翻转循环在碳积累中的作用(ROCCA)
  • 批准号:
    NE/Y005252/1
  • 财政年份:
    2023
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Research Grant
Role of the Overturning Circulation in Carbon Accumulation (ROCCA)
翻转循环在碳积累中的作用(ROCCA)
  • 批准号:
    NE/Y005244/1
  • 财政年份:
    2023
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Research Grant
AGS-PRF: Hydroclimate Response of the Southwestern United States (US) to Past and Future Atlantic Meridional Overturning Circulation (AMOC) Weakening
AGS-PRF:美国西南部 (US) 对过去和未来大西洋经向翻转环流 (AMOC) 减弱的水文气候响应
  • 批准号:
    2131749
  • 财政年份:
    2022
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Fellowship Award
Timing and impact of variable Arctic outflow on the Atlantic Meridional Overturning Circulation
北极流出量变化对大西洋经向翻转环流的时间和影响
  • 批准号:
    NE/X011690/1
  • 财政年份:
    2022
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Research Grant
The dynamics of the ocean meridional overturning circulation.
海洋经向翻转环流的动力学。
  • 批准号:
    RGPIN-2015-06712
  • 财政年份:
    2021
  • 资助金额:
    $ 78.15万
  • 项目类别:
    Discovery Grants Program - Individual
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